Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1 | //===------- CGObjCMac.cpp - Interface to Apple Objective-C Runtime -------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
Chris Lattner | fc8f0e1 | 2011-04-15 05:22:18 +0000 | [diff] [blame] | 10 | // This provides Objective-C code generation targeting the Apple runtime. |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "CGObjCRuntime.h" |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 15 | #include "CGBlocks.h" |
John McCall | 36f893c | 2011-01-28 11:13:47 +0000 | [diff] [blame] | 16 | #include "CGCleanup.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 17 | #include "CGRecordLayout.h" |
| 18 | #include "CodeGenFunction.h" |
| 19 | #include "CodeGenModule.h" |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 20 | #include "clang/AST/ASTContext.h" |
Daniel Dunbar | e91593e | 2008-08-11 04:54:23 +0000 | [diff] [blame] | 21 | #include "clang/AST/Decl.h" |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 22 | #include "clang/AST/DeclObjC.h" |
Anders Carlsson | 19cc4ab | 2009-07-18 19:43:29 +0000 | [diff] [blame] | 23 | #include "clang/AST/RecordLayout.h" |
Chris Lattner | 16f0049 | 2009-04-26 01:32:48 +0000 | [diff] [blame] | 24 | #include "clang/AST/StmtObjC.h" |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 25 | #include "clang/Basic/LangOptions.h" |
Mark Lacey | 8b54999 | 2013-10-30 21:53:58 +0000 | [diff] [blame] | 26 | #include "clang/CodeGen/CGFunctionInfo.h" |
Chandler Carruth | 06057ce | 2010-06-15 23:19:56 +0000 | [diff] [blame] | 27 | #include "clang/Frontend/CodeGenOptions.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 28 | #include "llvm/ADT/DenseSet.h" |
| 29 | #include "llvm/ADT/SetVector.h" |
| 30 | #include "llvm/ADT/SmallPtrSet.h" |
| 31 | #include "llvm/ADT/SmallString.h" |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 32 | #include "llvm/IR/CallSite.h" |
Chandler Carruth | 3b844ba | 2013-01-02 11:45:17 +0000 | [diff] [blame] | 33 | #include "llvm/IR/DataLayout.h" |
| 34 | #include "llvm/IR/InlineAsm.h" |
| 35 | #include "llvm/IR/IntrinsicInst.h" |
| 36 | #include "llvm/IR/LLVMContext.h" |
| 37 | #include "llvm/IR/Module.h" |
Daniel Dunbar | 3306349 | 2009-09-07 00:20:42 +0000 | [diff] [blame] | 38 | #include "llvm/Support/raw_ostream.h" |
Torok Edwin | f42e4a6 | 2009-08-24 13:25:12 +0000 | [diff] [blame] | 39 | #include <cstdio> |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 40 | |
| 41 | using namespace clang; |
Daniel Dunbar | 46f45b9 | 2008-09-09 01:06:48 +0000 | [diff] [blame] | 42 | using namespace CodeGen; |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 43 | |
| 44 | namespace { |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 45 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 46 | // FIXME: We should find a nicer way to make the labels for metadata, string |
| 47 | // concatenation is lame. |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 48 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 49 | class ObjCCommonTypesHelper { |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 50 | protected: |
| 51 | llvm::LLVMContext &VMContext; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 52 | |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 53 | private: |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 54 | // The types of these functions don't really matter because we |
| 55 | // should always bitcast before calling them. |
| 56 | |
| 57 | /// id objc_msgSend (id, SEL, ...) |
| 58 | /// |
| 59 | /// The default messenger, used for sends whose ABI is unchanged from |
| 60 | /// the all-integer/pointer case. |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 61 | llvm::Constant *getMessageSendFn() const { |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 62 | // Add the non-lazy-bind attribute, since objc_msgSend is likely to |
| 63 | // be called a lot. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 64 | llvm::Type *params[] = { ObjectPtrTy, SelectorPtrTy }; |
Bill Wendling | c4c62fd | 2013-01-31 00:30:05 +0000 | [diff] [blame] | 65 | return |
| 66 | CGM.CreateRuntimeFunction(llvm::FunctionType::get(ObjectPtrTy, |
| 67 | params, true), |
| 68 | "objc_msgSend", |
| 69 | llvm::AttributeSet::get(CGM.getLLVMContext(), |
| 70 | llvm::AttributeSet::FunctionIndex, |
| 71 | llvm::Attribute::NonLazyBind)); |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 72 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 73 | |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 74 | /// void objc_msgSend_stret (id, SEL, ...) |
| 75 | /// |
| 76 | /// The messenger used when the return value is an aggregate returned |
| 77 | /// by indirect reference in the first argument, and therefore the |
| 78 | /// self and selector parameters are shifted over by one. |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 79 | llvm::Constant *getMessageSendStretFn() const { |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 80 | llvm::Type *params[] = { ObjectPtrTy, SelectorPtrTy }; |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 81 | return CGM.CreateRuntimeFunction(llvm::FunctionType::get(CGM.VoidTy, |
| 82 | params, true), |
| 83 | "objc_msgSend_stret"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 84 | |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 85 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 86 | |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 87 | /// [double | long double] objc_msgSend_fpret(id self, SEL op, ...) |
| 88 | /// |
| 89 | /// The messenger used when the return value is returned on the x87 |
| 90 | /// floating-point stack; without a special entrypoint, the nil case |
| 91 | /// would be unbalanced. |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 92 | llvm::Constant *getMessageSendFpretFn() const { |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 93 | llvm::Type *params[] = { ObjectPtrTy, SelectorPtrTy }; |
Chris Lattner | 8b41868 | 2012-02-07 00:39:47 +0000 | [diff] [blame] | 94 | return CGM.CreateRuntimeFunction(llvm::FunctionType::get(CGM.DoubleTy, |
| 95 | params, true), |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 96 | "objc_msgSend_fpret"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 97 | |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 98 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 99 | |
Anders Carlsson | eea6480 | 2011-10-31 16:27:11 +0000 | [diff] [blame] | 100 | /// _Complex long double objc_msgSend_fp2ret(id self, SEL op, ...) |
| 101 | /// |
| 102 | /// The messenger used when the return value is returned in two values on the |
| 103 | /// x87 floating point stack; without a special entrypoint, the nil case |
| 104 | /// would be unbalanced. Only used on 64-bit X86. |
| 105 | llvm::Constant *getMessageSendFp2retFn() const { |
| 106 | llvm::Type *params[] = { ObjectPtrTy, SelectorPtrTy }; |
| 107 | llvm::Type *longDoubleType = llvm::Type::getX86_FP80Ty(VMContext); |
| 108 | llvm::Type *resultType = |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 109 | llvm::StructType::get(longDoubleType, longDoubleType, nullptr); |
Anders Carlsson | eea6480 | 2011-10-31 16:27:11 +0000 | [diff] [blame] | 110 | |
| 111 | return CGM.CreateRuntimeFunction(llvm::FunctionType::get(resultType, |
| 112 | params, true), |
| 113 | "objc_msgSend_fp2ret"); |
| 114 | } |
| 115 | |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 116 | /// id objc_msgSendSuper(struct objc_super *super, SEL op, ...) |
| 117 | /// |
| 118 | /// The messenger used for super calls, which have different dispatch |
| 119 | /// semantics. The class passed is the superclass of the current |
| 120 | /// class. |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 121 | llvm::Constant *getMessageSendSuperFn() const { |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 122 | llvm::Type *params[] = { SuperPtrTy, SelectorPtrTy }; |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 123 | return CGM.CreateRuntimeFunction(llvm::FunctionType::get(ObjectPtrTy, |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 124 | params, true), |
| 125 | "objc_msgSendSuper"); |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 126 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 127 | |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 128 | /// id objc_msgSendSuper2(struct objc_super *super, SEL op, ...) |
| 129 | /// |
| 130 | /// A slightly different messenger used for super calls. The class |
| 131 | /// passed is the current class. |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 132 | llvm::Constant *getMessageSendSuperFn2() const { |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 133 | llvm::Type *params[] = { SuperPtrTy, SelectorPtrTy }; |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 134 | return CGM.CreateRuntimeFunction(llvm::FunctionType::get(ObjectPtrTy, |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 135 | params, true), |
| 136 | "objc_msgSendSuper2"); |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 137 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 138 | |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 139 | /// void objc_msgSendSuper_stret(void *stretAddr, struct objc_super *super, |
| 140 | /// SEL op, ...) |
| 141 | /// |
| 142 | /// The messenger used for super calls which return an aggregate indirectly. |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 143 | llvm::Constant *getMessageSendSuperStretFn() const { |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 144 | llvm::Type *params[] = { Int8PtrTy, SuperPtrTy, SelectorPtrTy }; |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 145 | return CGM.CreateRuntimeFunction( |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 146 | llvm::FunctionType::get(CGM.VoidTy, params, true), |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 147 | "objc_msgSendSuper_stret"); |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 148 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 149 | |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 150 | /// void objc_msgSendSuper2_stret(void * stretAddr, struct objc_super *super, |
| 151 | /// SEL op, ...) |
| 152 | /// |
| 153 | /// objc_msgSendSuper_stret with the super2 semantics. |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 154 | llvm::Constant *getMessageSendSuperStretFn2() const { |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 155 | llvm::Type *params[] = { Int8PtrTy, SuperPtrTy, SelectorPtrTy }; |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 156 | return CGM.CreateRuntimeFunction( |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 157 | llvm::FunctionType::get(CGM.VoidTy, params, true), |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 158 | "objc_msgSendSuper2_stret"); |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 159 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 160 | |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 161 | llvm::Constant *getMessageSendSuperFpretFn() const { |
| 162 | // There is no objc_msgSendSuper_fpret? How can that work? |
| 163 | return getMessageSendSuperFn(); |
| 164 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 165 | |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 166 | llvm::Constant *getMessageSendSuperFpretFn2() const { |
| 167 | // There is no objc_msgSendSuper_fpret? How can that work? |
| 168 | return getMessageSendSuperFn2(); |
| 169 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 170 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 171 | protected: |
| 172 | CodeGen::CodeGenModule &CGM; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 173 | |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 174 | public: |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 175 | llvm::Type *ShortTy, *IntTy, *LongTy, *LongLongTy; |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 176 | llvm::Type *Int8PtrTy, *Int8PtrPtrTy; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 177 | llvm::Type *IvarOffsetVarTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 178 | |
Daniel Dunbar | 2bedbf8 | 2008-08-12 05:28:47 +0000 | [diff] [blame] | 179 | /// ObjectPtrTy - LLVM type for object handles (typeof(id)) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 180 | llvm::Type *ObjectPtrTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 181 | |
Fariborz Jahanian | 6d657c4 | 2008-11-18 20:18:11 +0000 | [diff] [blame] | 182 | /// PtrObjectPtrTy - LLVM type for id * |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 183 | llvm::Type *PtrObjectPtrTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 184 | |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 185 | /// SelectorPtrTy - LLVM type for selector handles (typeof(SEL)) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 186 | llvm::Type *SelectorPtrTy; |
Douglas Gregor | 4c86fdb | 2012-01-17 18:36:30 +0000 | [diff] [blame] | 187 | |
| 188 | private: |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 189 | /// ProtocolPtrTy - LLVM type for external protocol handles |
| 190 | /// (typeof(Protocol)) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 191 | llvm::Type *ExternalProtocolPtrTy; |
Douglas Gregor | 4c86fdb | 2012-01-17 18:36:30 +0000 | [diff] [blame] | 192 | |
| 193 | public: |
| 194 | llvm::Type *getExternalProtocolPtrTy() { |
| 195 | if (!ExternalProtocolPtrTy) { |
| 196 | // FIXME: It would be nice to unify this with the opaque type, so that the |
| 197 | // IR comes out a bit cleaner. |
| 198 | CodeGen::CodeGenTypes &Types = CGM.getTypes(); |
| 199 | ASTContext &Ctx = CGM.getContext(); |
| 200 | llvm::Type *T = Types.ConvertType(Ctx.getObjCProtoType()); |
| 201 | ExternalProtocolPtrTy = llvm::PointerType::getUnqual(T); |
| 202 | } |
| 203 | |
| 204 | return ExternalProtocolPtrTy; |
| 205 | } |
| 206 | |
Daniel Dunbar | 19cd87e | 2008-08-30 03:02:31 +0000 | [diff] [blame] | 207 | // SuperCTy - clang type for struct objc_super. |
| 208 | QualType SuperCTy; |
| 209 | // SuperPtrCTy - clang type for struct objc_super *. |
| 210 | QualType SuperPtrCTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 211 | |
Daniel Dunbar | e8b470d | 2008-08-23 04:28:29 +0000 | [diff] [blame] | 212 | /// SuperTy - LLVM type for struct objc_super. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 213 | llvm::StructType *SuperTy; |
Daniel Dunbar | 14c80b7 | 2008-08-23 09:25:55 +0000 | [diff] [blame] | 214 | /// SuperPtrTy - LLVM type for struct objc_super *. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 215 | llvm::Type *SuperPtrTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 216 | |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 217 | /// PropertyTy - LLVM type for struct objc_property (struct _prop_t |
| 218 | /// in GCC parlance). |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 219 | llvm::StructType *PropertyTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 220 | |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 221 | /// PropertyListTy - LLVM type for struct objc_property_list |
| 222 | /// (_prop_list_t in GCC parlance). |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 223 | llvm::StructType *PropertyListTy; |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 224 | /// PropertyListPtrTy - LLVM type for struct objc_property_list*. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 225 | llvm::Type *PropertyListPtrTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 226 | |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 227 | // MethodTy - LLVM type for struct objc_method. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 228 | llvm::StructType *MethodTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 229 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 230 | /// CacheTy - LLVM type for struct objc_cache. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 231 | llvm::Type *CacheTy; |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 232 | /// CachePtrTy - LLVM type for struct objc_cache *. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 233 | llvm::Type *CachePtrTy; |
Fariborz Jahanian | 9d96bce | 2011-06-22 20:21:51 +0000 | [diff] [blame] | 234 | |
Chris Lattner | 72db6c3 | 2009-04-22 02:44:54 +0000 | [diff] [blame] | 235 | llvm::Constant *getGetPropertyFn() { |
| 236 | CodeGen::CodeGenTypes &Types = CGM.getTypes(); |
| 237 | ASTContext &Ctx = CGM.getContext(); |
| 238 | // id objc_getProperty (id, SEL, ptrdiff_t, bool) |
John McCall | ead608a | 2010-02-26 00:48:12 +0000 | [diff] [blame] | 239 | CanQualType IdType = Ctx.getCanonicalParamType(Ctx.getObjCIdType()); |
| 240 | CanQualType SelType = Ctx.getCanonicalParamType(Ctx.getObjCSelType()); |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 241 | CanQualType Params[] = { |
| 242 | IdType, SelType, |
| 243 | Ctx.getPointerDiffType()->getCanonicalTypeUnqualified(), Ctx.BoolTy}; |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 244 | llvm::FunctionType *FTy = |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 245 | Types.GetFunctionType( |
| 246 | Types.arrangeBuiltinFunctionDeclaration(IdType, Params)); |
Chris Lattner | 72db6c3 | 2009-04-22 02:44:54 +0000 | [diff] [blame] | 247 | return CGM.CreateRuntimeFunction(FTy, "objc_getProperty"); |
| 248 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 249 | |
Chris Lattner | 72db6c3 | 2009-04-22 02:44:54 +0000 | [diff] [blame] | 250 | llvm::Constant *getSetPropertyFn() { |
| 251 | CodeGen::CodeGenTypes &Types = CGM.getTypes(); |
| 252 | ASTContext &Ctx = CGM.getContext(); |
| 253 | // void objc_setProperty (id, SEL, ptrdiff_t, id, bool, bool) |
John McCall | ead608a | 2010-02-26 00:48:12 +0000 | [diff] [blame] | 254 | CanQualType IdType = Ctx.getCanonicalParamType(Ctx.getObjCIdType()); |
| 255 | CanQualType SelType = Ctx.getCanonicalParamType(Ctx.getObjCSelType()); |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 256 | CanQualType Params[] = { |
| 257 | IdType, |
| 258 | SelType, |
| 259 | Ctx.getPointerDiffType()->getCanonicalTypeUnqualified(), |
| 260 | IdType, |
| 261 | Ctx.BoolTy, |
| 262 | Ctx.BoolTy}; |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 263 | llvm::FunctionType *FTy = |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 264 | Types.GetFunctionType( |
| 265 | Types.arrangeBuiltinFunctionDeclaration(Ctx.VoidTy, Params)); |
Chris Lattner | 72db6c3 | 2009-04-22 02:44:54 +0000 | [diff] [blame] | 266 | return CGM.CreateRuntimeFunction(FTy, "objc_setProperty"); |
| 267 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 268 | |
Ted Kremenek | ebcb57a | 2012-03-06 20:05:56 +0000 | [diff] [blame] | 269 | llvm::Constant *getOptimizedSetPropertyFn(bool atomic, bool copy) { |
| 270 | CodeGen::CodeGenTypes &Types = CGM.getTypes(); |
| 271 | ASTContext &Ctx = CGM.getContext(); |
| 272 | // void objc_setProperty_atomic(id self, SEL _cmd, |
| 273 | // id newValue, ptrdiff_t offset); |
| 274 | // void objc_setProperty_nonatomic(id self, SEL _cmd, |
| 275 | // id newValue, ptrdiff_t offset); |
| 276 | // void objc_setProperty_atomic_copy(id self, SEL _cmd, |
| 277 | // id newValue, ptrdiff_t offset); |
| 278 | // void objc_setProperty_nonatomic_copy(id self, SEL _cmd, |
| 279 | // id newValue, ptrdiff_t offset); |
| 280 | |
| 281 | SmallVector<CanQualType,4> Params; |
| 282 | CanQualType IdType = Ctx.getCanonicalParamType(Ctx.getObjCIdType()); |
| 283 | CanQualType SelType = Ctx.getCanonicalParamType(Ctx.getObjCSelType()); |
| 284 | Params.push_back(IdType); |
| 285 | Params.push_back(SelType); |
| 286 | Params.push_back(IdType); |
| 287 | Params.push_back(Ctx.getPointerDiffType()->getCanonicalTypeUnqualified()); |
| 288 | llvm::FunctionType *FTy = |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 289 | Types.GetFunctionType( |
| 290 | Types.arrangeBuiltinFunctionDeclaration(Ctx.VoidTy, Params)); |
Ted Kremenek | ebcb57a | 2012-03-06 20:05:56 +0000 | [diff] [blame] | 291 | const char *name; |
| 292 | if (atomic && copy) |
| 293 | name = "objc_setProperty_atomic_copy"; |
| 294 | else if (atomic && !copy) |
| 295 | name = "objc_setProperty_atomic"; |
| 296 | else if (!atomic && copy) |
| 297 | name = "objc_setProperty_nonatomic_copy"; |
| 298 | else |
| 299 | name = "objc_setProperty_nonatomic"; |
| 300 | |
| 301 | return CGM.CreateRuntimeFunction(FTy, name); |
| 302 | } |
Fariborz Jahanian | 6cc5906 | 2010-04-12 18:18:10 +0000 | [diff] [blame] | 303 | |
| 304 | llvm::Constant *getCopyStructFn() { |
| 305 | CodeGen::CodeGenTypes &Types = CGM.getTypes(); |
| 306 | ASTContext &Ctx = CGM.getContext(); |
| 307 | // void objc_copyStruct (void *, const void *, size_t, bool, bool) |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 308 | SmallVector<CanQualType,5> Params; |
Fariborz Jahanian | 6cc5906 | 2010-04-12 18:18:10 +0000 | [diff] [blame] | 309 | Params.push_back(Ctx.VoidPtrTy); |
| 310 | Params.push_back(Ctx.VoidPtrTy); |
| 311 | Params.push_back(Ctx.LongTy); |
| 312 | Params.push_back(Ctx.BoolTy); |
| 313 | Params.push_back(Ctx.BoolTy); |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 314 | llvm::FunctionType *FTy = |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 315 | Types.GetFunctionType( |
| 316 | Types.arrangeBuiltinFunctionDeclaration(Ctx.VoidTy, Params)); |
Fariborz Jahanian | 6cc5906 | 2010-04-12 18:18:10 +0000 | [diff] [blame] | 317 | return CGM.CreateRuntimeFunction(FTy, "objc_copyStruct"); |
| 318 | } |
| 319 | |
Fariborz Jahanian | e317302 | 2012-01-06 18:07:23 +0000 | [diff] [blame] | 320 | /// This routine declares and returns address of: |
| 321 | /// void objc_copyCppObjectAtomic( |
| 322 | /// void *dest, const void *src, |
| 323 | /// void (*copyHelper) (void *dest, const void *source)); |
| 324 | llvm::Constant *getCppAtomicObjectFunction() { |
| 325 | CodeGen::CodeGenTypes &Types = CGM.getTypes(); |
| 326 | ASTContext &Ctx = CGM.getContext(); |
| 327 | /// void objc_copyCppObjectAtomic(void *dest, const void *src, void *helper); |
| 328 | SmallVector<CanQualType,3> Params; |
| 329 | Params.push_back(Ctx.VoidPtrTy); |
| 330 | Params.push_back(Ctx.VoidPtrTy); |
| 331 | Params.push_back(Ctx.VoidPtrTy); |
| 332 | llvm::FunctionType *FTy = |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 333 | Types.GetFunctionType( |
| 334 | Types.arrangeBuiltinFunctionDeclaration(Ctx.VoidTy, Params)); |
Fariborz Jahanian | e317302 | 2012-01-06 18:07:23 +0000 | [diff] [blame] | 335 | return CGM.CreateRuntimeFunction(FTy, "objc_copyCppObjectAtomic"); |
| 336 | } |
| 337 | |
Chris Lattner | 72db6c3 | 2009-04-22 02:44:54 +0000 | [diff] [blame] | 338 | llvm::Constant *getEnumerationMutationFn() { |
Daniel Dunbar | c1ab900 | 2009-07-11 20:32:50 +0000 | [diff] [blame] | 339 | CodeGen::CodeGenTypes &Types = CGM.getTypes(); |
| 340 | ASTContext &Ctx = CGM.getContext(); |
Chris Lattner | 72db6c3 | 2009-04-22 02:44:54 +0000 | [diff] [blame] | 341 | // void objc_enumerationMutation (id) |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 342 | SmallVector<CanQualType,1> Params; |
John McCall | ead608a | 2010-02-26 00:48:12 +0000 | [diff] [blame] | 343 | Params.push_back(Ctx.getCanonicalParamType(Ctx.getObjCIdType())); |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 344 | llvm::FunctionType *FTy = |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 345 | Types.GetFunctionType( |
| 346 | Types.arrangeBuiltinFunctionDeclaration(Ctx.VoidTy, Params)); |
Chris Lattner | 72db6c3 | 2009-04-22 02:44:54 +0000 | [diff] [blame] | 347 | return CGM.CreateRuntimeFunction(FTy, "objc_enumerationMutation"); |
| 348 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 349 | |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 350 | llvm::Constant *getLookUpClassFn() { |
| 351 | CodeGen::CodeGenTypes &Types = CGM.getTypes(); |
| 352 | ASTContext &Ctx = CGM.getContext(); |
| 353 | // Class objc_lookUpClass (const char *) |
| 354 | SmallVector<CanQualType,1> Params; |
| 355 | Params.push_back( |
| 356 | Ctx.getCanonicalType(Ctx.getPointerType(Ctx.CharTy.withConst()))); |
| 357 | llvm::FunctionType *FTy = |
| 358 | Types.GetFunctionType(Types.arrangeBuiltinFunctionDeclaration( |
| 359 | Ctx.getCanonicalType(Ctx.getObjCClassType()), |
| 360 | Params)); |
| 361 | return CGM.CreateRuntimeFunction(FTy, "objc_lookUpClass"); |
| 362 | } |
| 363 | |
Fariborz Jahanian | db28686 | 2009-01-22 00:37:21 +0000 | [diff] [blame] | 364 | /// GcReadWeakFn -- LLVM objc_read_weak (id *src) function. |
Chris Lattner | 72db6c3 | 2009-04-22 02:44:54 +0000 | [diff] [blame] | 365 | llvm::Constant *getGcReadWeakFn() { |
| 366 | // id objc_read_weak (id *) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 367 | llvm::Type *args[] = { ObjectPtrTy->getPointerTo() }; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 368 | llvm::FunctionType *FTy = |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 369 | llvm::FunctionType::get(ObjectPtrTy, args, false); |
Chris Lattner | 72db6c3 | 2009-04-22 02:44:54 +0000 | [diff] [blame] | 370 | return CGM.CreateRuntimeFunction(FTy, "objc_read_weak"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 371 | } |
| 372 | |
Fariborz Jahanian | db28686 | 2009-01-22 00:37:21 +0000 | [diff] [blame] | 373 | /// GcAssignWeakFn -- LLVM objc_assign_weak function. |
Chris Lattner | 96508e1 | 2009-04-17 22:12:36 +0000 | [diff] [blame] | 374 | llvm::Constant *getGcAssignWeakFn() { |
| 375 | // id objc_assign_weak (id, id *) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 376 | llvm::Type *args[] = { ObjectPtrTy, ObjectPtrTy->getPointerTo() }; |
Chris Lattner | 96508e1 | 2009-04-17 22:12:36 +0000 | [diff] [blame] | 377 | llvm::FunctionType *FTy = |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 378 | llvm::FunctionType::get(ObjectPtrTy, args, false); |
Chris Lattner | 96508e1 | 2009-04-17 22:12:36 +0000 | [diff] [blame] | 379 | return CGM.CreateRuntimeFunction(FTy, "objc_assign_weak"); |
| 380 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 381 | |
Fariborz Jahanian | db28686 | 2009-01-22 00:37:21 +0000 | [diff] [blame] | 382 | /// GcAssignGlobalFn -- LLVM objc_assign_global function. |
Chris Lattner | bbccd61 | 2009-04-22 02:38:11 +0000 | [diff] [blame] | 383 | llvm::Constant *getGcAssignGlobalFn() { |
| 384 | // id objc_assign_global(id, id *) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 385 | llvm::Type *args[] = { ObjectPtrTy, ObjectPtrTy->getPointerTo() }; |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 386 | llvm::FunctionType *FTy = |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 387 | llvm::FunctionType::get(ObjectPtrTy, args, false); |
Chris Lattner | bbccd61 | 2009-04-22 02:38:11 +0000 | [diff] [blame] | 388 | return CGM.CreateRuntimeFunction(FTy, "objc_assign_global"); |
| 389 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 390 | |
Fariborz Jahanian | 021a7a6 | 2010-07-20 20:30:03 +0000 | [diff] [blame] | 391 | /// GcAssignThreadLocalFn -- LLVM objc_assign_threadlocal function. |
| 392 | llvm::Constant *getGcAssignThreadLocalFn() { |
| 393 | // id objc_assign_threadlocal(id src, id * dest) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 394 | llvm::Type *args[] = { ObjectPtrTy, ObjectPtrTy->getPointerTo() }; |
Fariborz Jahanian | 021a7a6 | 2010-07-20 20:30:03 +0000 | [diff] [blame] | 395 | llvm::FunctionType *FTy = |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 396 | llvm::FunctionType::get(ObjectPtrTy, args, false); |
Fariborz Jahanian | 021a7a6 | 2010-07-20 20:30:03 +0000 | [diff] [blame] | 397 | return CGM.CreateRuntimeFunction(FTy, "objc_assign_threadlocal"); |
| 398 | } |
| 399 | |
Fariborz Jahanian | db28686 | 2009-01-22 00:37:21 +0000 | [diff] [blame] | 400 | /// GcAssignIvarFn -- LLVM objc_assign_ivar function. |
Chris Lattner | bbccd61 | 2009-04-22 02:38:11 +0000 | [diff] [blame] | 401 | llvm::Constant *getGcAssignIvarFn() { |
Fariborz Jahanian | 6c7a1f3 | 2009-09-24 22:25:38 +0000 | [diff] [blame] | 402 | // id objc_assign_ivar(id, id *, ptrdiff_t) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 403 | llvm::Type *args[] = { ObjectPtrTy, ObjectPtrTy->getPointerTo(), |
| 404 | CGM.PtrDiffTy }; |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 405 | llvm::FunctionType *FTy = |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 406 | llvm::FunctionType::get(ObjectPtrTy, args, false); |
Chris Lattner | bbccd61 | 2009-04-22 02:38:11 +0000 | [diff] [blame] | 407 | return CGM.CreateRuntimeFunction(FTy, "objc_assign_ivar"); |
| 408 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 409 | |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 410 | /// GcMemmoveCollectableFn -- LLVM objc_memmove_collectable function. |
| 411 | llvm::Constant *GcMemmoveCollectableFn() { |
| 412 | // void *objc_memmove_collectable(void *dst, const void *src, size_t size) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 413 | llvm::Type *args[] = { Int8PtrTy, Int8PtrTy, LongTy }; |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 414 | llvm::FunctionType *FTy = llvm::FunctionType::get(Int8PtrTy, args, false); |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 415 | return CGM.CreateRuntimeFunction(FTy, "objc_memmove_collectable"); |
| 416 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 417 | |
Fariborz Jahanian | db28686 | 2009-01-22 00:37:21 +0000 | [diff] [blame] | 418 | /// GcAssignStrongCastFn -- LLVM objc_assign_strongCast function. |
Chris Lattner | bbccd61 | 2009-04-22 02:38:11 +0000 | [diff] [blame] | 419 | llvm::Constant *getGcAssignStrongCastFn() { |
Fariborz Jahanian | 021a7a6 | 2010-07-20 20:30:03 +0000 | [diff] [blame] | 420 | // id objc_assign_strongCast(id, id *) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 421 | llvm::Type *args[] = { ObjectPtrTy, ObjectPtrTy->getPointerTo() }; |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 422 | llvm::FunctionType *FTy = |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 423 | llvm::FunctionType::get(ObjectPtrTy, args, false); |
Chris Lattner | bbccd61 | 2009-04-22 02:38:11 +0000 | [diff] [blame] | 424 | return CGM.CreateRuntimeFunction(FTy, "objc_assign_strongCast"); |
| 425 | } |
Anders Carlsson | f57c5b2 | 2009-02-16 22:59:18 +0000 | [diff] [blame] | 426 | |
| 427 | /// ExceptionThrowFn - LLVM objc_exception_throw function. |
Chris Lattner | bbccd61 | 2009-04-22 02:38:11 +0000 | [diff] [blame] | 428 | llvm::Constant *getExceptionThrowFn() { |
| 429 | // void objc_exception_throw(id) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 430 | llvm::Type *args[] = { ObjectPtrTy }; |
Chris Lattner | bbccd61 | 2009-04-22 02:38:11 +0000 | [diff] [blame] | 431 | llvm::FunctionType *FTy = |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 432 | llvm::FunctionType::get(CGM.VoidTy, args, false); |
Chris Lattner | bbccd61 | 2009-04-22 02:38:11 +0000 | [diff] [blame] | 433 | return CGM.CreateRuntimeFunction(FTy, "objc_exception_throw"); |
| 434 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 435 | |
Fariborz Jahanian | 69677ea | 2010-05-28 17:34:43 +0000 | [diff] [blame] | 436 | /// ExceptionRethrowFn - LLVM objc_exception_rethrow function. |
| 437 | llvm::Constant *getExceptionRethrowFn() { |
| 438 | // void objc_exception_rethrow(void) |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 439 | llvm::FunctionType *FTy = llvm::FunctionType::get(CGM.VoidTy, false); |
Fariborz Jahanian | 69677ea | 2010-05-28 17:34:43 +0000 | [diff] [blame] | 440 | return CGM.CreateRuntimeFunction(FTy, "objc_exception_rethrow"); |
| 441 | } |
| 442 | |
Daniel Dunbar | 1c56667 | 2009-02-24 01:43:46 +0000 | [diff] [blame] | 443 | /// SyncEnterFn - LLVM object_sync_enter function. |
Chris Lattner | b02e53b | 2009-04-06 16:53:45 +0000 | [diff] [blame] | 444 | llvm::Constant *getSyncEnterFn() { |
Aaron Ballman | 2d234d73 | 2012-09-06 16:44:16 +0000 | [diff] [blame] | 445 | // int objc_sync_enter (id) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 446 | llvm::Type *args[] = { ObjectPtrTy }; |
Chris Lattner | b02e53b | 2009-04-06 16:53:45 +0000 | [diff] [blame] | 447 | llvm::FunctionType *FTy = |
Aaron Ballman | 2d234d73 | 2012-09-06 16:44:16 +0000 | [diff] [blame] | 448 | llvm::FunctionType::get(CGM.IntTy, args, false); |
Chris Lattner | b02e53b | 2009-04-06 16:53:45 +0000 | [diff] [blame] | 449 | return CGM.CreateRuntimeFunction(FTy, "objc_sync_enter"); |
| 450 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 451 | |
Daniel Dunbar | 1c56667 | 2009-02-24 01:43:46 +0000 | [diff] [blame] | 452 | /// SyncExitFn - LLVM object_sync_exit function. |
Chris Lattner | bbccd61 | 2009-04-22 02:38:11 +0000 | [diff] [blame] | 453 | llvm::Constant *getSyncExitFn() { |
Aaron Ballman | 2d234d73 | 2012-09-06 16:44:16 +0000 | [diff] [blame] | 454 | // int objc_sync_exit (id) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 455 | llvm::Type *args[] = { ObjectPtrTy }; |
Chris Lattner | bbccd61 | 2009-04-22 02:38:11 +0000 | [diff] [blame] | 456 | llvm::FunctionType *FTy = |
Aaron Ballman | 2d234d73 | 2012-09-06 16:44:16 +0000 | [diff] [blame] | 457 | llvm::FunctionType::get(CGM.IntTy, args, false); |
Chris Lattner | bbccd61 | 2009-04-22 02:38:11 +0000 | [diff] [blame] | 458 | return CGM.CreateRuntimeFunction(FTy, "objc_sync_exit"); |
| 459 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 460 | |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 461 | llvm::Constant *getSendFn(bool IsSuper) const { |
| 462 | return IsSuper ? getMessageSendSuperFn() : getMessageSendFn(); |
| 463 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 464 | |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 465 | llvm::Constant *getSendFn2(bool IsSuper) const { |
| 466 | return IsSuper ? getMessageSendSuperFn2() : getMessageSendFn(); |
| 467 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 468 | |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 469 | llvm::Constant *getSendStretFn(bool IsSuper) const { |
| 470 | return IsSuper ? getMessageSendSuperStretFn() : getMessageSendStretFn(); |
| 471 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 472 | |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 473 | llvm::Constant *getSendStretFn2(bool IsSuper) const { |
| 474 | return IsSuper ? getMessageSendSuperStretFn2() : getMessageSendStretFn(); |
| 475 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 476 | |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 477 | llvm::Constant *getSendFpretFn(bool IsSuper) const { |
| 478 | return IsSuper ? getMessageSendSuperFpretFn() : getMessageSendFpretFn(); |
| 479 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 480 | |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 481 | llvm::Constant *getSendFpretFn2(bool IsSuper) const { |
| 482 | return IsSuper ? getMessageSendSuperFpretFn2() : getMessageSendFpretFn(); |
| 483 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 484 | |
Anders Carlsson | eea6480 | 2011-10-31 16:27:11 +0000 | [diff] [blame] | 485 | llvm::Constant *getSendFp2retFn(bool IsSuper) const { |
| 486 | return IsSuper ? getMessageSendSuperFn() : getMessageSendFp2retFn(); |
| 487 | } |
| 488 | |
| 489 | llvm::Constant *getSendFp2RetFn2(bool IsSuper) const { |
| 490 | return IsSuper ? getMessageSendSuperFn2() : getMessageSendFp2retFn(); |
| 491 | } |
| 492 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 493 | ObjCCommonTypesHelper(CodeGen::CodeGenModule &cgm); |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 494 | }; |
Daniel Dunbar | e8b470d | 2008-08-23 04:28:29 +0000 | [diff] [blame] | 495 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 496 | /// ObjCTypesHelper - Helper class that encapsulates lazy |
| 497 | /// construction of varies types used during ObjC generation. |
| 498 | class ObjCTypesHelper : public ObjCCommonTypesHelper { |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 499 | public: |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 500 | /// SymtabTy - LLVM type for struct objc_symtab. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 501 | llvm::StructType *SymtabTy; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 502 | /// SymtabPtrTy - LLVM type for struct objc_symtab *. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 503 | llvm::Type *SymtabPtrTy; |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 504 | /// ModuleTy - LLVM type for struct objc_module. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 505 | llvm::StructType *ModuleTy; |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 506 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 507 | /// ProtocolTy - LLVM type for struct objc_protocol. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 508 | llvm::StructType *ProtocolTy; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 509 | /// ProtocolPtrTy - LLVM type for struct objc_protocol *. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 510 | llvm::Type *ProtocolPtrTy; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 511 | /// ProtocolExtensionTy - LLVM type for struct |
| 512 | /// objc_protocol_extension. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 513 | llvm::StructType *ProtocolExtensionTy; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 514 | /// ProtocolExtensionTy - LLVM type for struct |
| 515 | /// objc_protocol_extension *. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 516 | llvm::Type *ProtocolExtensionPtrTy; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 517 | /// MethodDescriptionTy - LLVM type for struct |
| 518 | /// objc_method_description. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 519 | llvm::StructType *MethodDescriptionTy; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 520 | /// MethodDescriptionListTy - LLVM type for struct |
| 521 | /// objc_method_description_list. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 522 | llvm::StructType *MethodDescriptionListTy; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 523 | /// MethodDescriptionListPtrTy - LLVM type for struct |
| 524 | /// objc_method_description_list *. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 525 | llvm::Type *MethodDescriptionListPtrTy; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 526 | /// ProtocolListTy - LLVM type for struct objc_property_list. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 527 | llvm::StructType *ProtocolListTy; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 528 | /// ProtocolListPtrTy - LLVM type for struct objc_property_list*. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 529 | llvm::Type *ProtocolListPtrTy; |
Daniel Dunbar | 86e253a | 2008-08-22 20:34:54 +0000 | [diff] [blame] | 530 | /// CategoryTy - LLVM type for struct objc_category. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 531 | llvm::StructType *CategoryTy; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 532 | /// ClassTy - LLVM type for struct objc_class. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 533 | llvm::StructType *ClassTy; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 534 | /// ClassPtrTy - LLVM type for struct objc_class *. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 535 | llvm::Type *ClassPtrTy; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 536 | /// ClassExtensionTy - LLVM type for struct objc_class_ext. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 537 | llvm::StructType *ClassExtensionTy; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 538 | /// ClassExtensionPtrTy - LLVM type for struct objc_class_ext *. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 539 | llvm::Type *ClassExtensionPtrTy; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 540 | // IvarTy - LLVM type for struct objc_ivar. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 541 | llvm::StructType *IvarTy; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 542 | /// IvarListTy - LLVM type for struct objc_ivar_list. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 543 | llvm::Type *IvarListTy; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 544 | /// IvarListPtrTy - LLVM type for struct objc_ivar_list *. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 545 | llvm::Type *IvarListPtrTy; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 546 | /// MethodListTy - LLVM type for struct objc_method_list. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 547 | llvm::Type *MethodListTy; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 548 | /// MethodListPtrTy - LLVM type for struct objc_method_list *. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 549 | llvm::Type *MethodListPtrTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 550 | |
Anders Carlsson | 124526b | 2008-09-09 10:10:21 +0000 | [diff] [blame] | 551 | /// ExceptionDataTy - LLVM type for struct _objc_exception_data. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 552 | llvm::Type *ExceptionDataTy; |
Fariborz Jahanian | 9d96bce | 2011-06-22 20:21:51 +0000 | [diff] [blame] | 553 | |
Anders Carlsson | 124526b | 2008-09-09 10:10:21 +0000 | [diff] [blame] | 554 | /// ExceptionTryEnterFn - LLVM objc_exception_try_enter function. |
Chris Lattner | 34b02a1 | 2009-04-22 02:26:14 +0000 | [diff] [blame] | 555 | llvm::Constant *getExceptionTryEnterFn() { |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 556 | llvm::Type *params[] = { ExceptionDataTy->getPointerTo() }; |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 557 | return CGM.CreateRuntimeFunction( |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 558 | llvm::FunctionType::get(CGM.VoidTy, params, false), |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 559 | "objc_exception_try_enter"); |
Chris Lattner | 34b02a1 | 2009-04-22 02:26:14 +0000 | [diff] [blame] | 560 | } |
Anders Carlsson | 124526b | 2008-09-09 10:10:21 +0000 | [diff] [blame] | 561 | |
| 562 | /// ExceptionTryExitFn - LLVM objc_exception_try_exit function. |
Chris Lattner | 34b02a1 | 2009-04-22 02:26:14 +0000 | [diff] [blame] | 563 | llvm::Constant *getExceptionTryExitFn() { |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 564 | llvm::Type *params[] = { ExceptionDataTy->getPointerTo() }; |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 565 | return CGM.CreateRuntimeFunction( |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 566 | llvm::FunctionType::get(CGM.VoidTy, params, false), |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 567 | "objc_exception_try_exit"); |
Chris Lattner | 34b02a1 | 2009-04-22 02:26:14 +0000 | [diff] [blame] | 568 | } |
Anders Carlsson | 124526b | 2008-09-09 10:10:21 +0000 | [diff] [blame] | 569 | |
| 570 | /// ExceptionExtractFn - LLVM objc_exception_extract function. |
Chris Lattner | 34b02a1 | 2009-04-22 02:26:14 +0000 | [diff] [blame] | 571 | llvm::Constant *getExceptionExtractFn() { |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 572 | llvm::Type *params[] = { ExceptionDataTy->getPointerTo() }; |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 573 | return CGM.CreateRuntimeFunction(llvm::FunctionType::get(ObjectPtrTy, |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 574 | params, false), |
Chris Lattner | 34b02a1 | 2009-04-22 02:26:14 +0000 | [diff] [blame] | 575 | "objc_exception_extract"); |
Chris Lattner | 34b02a1 | 2009-04-22 02:26:14 +0000 | [diff] [blame] | 576 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 577 | |
Anders Carlsson | 124526b | 2008-09-09 10:10:21 +0000 | [diff] [blame] | 578 | /// ExceptionMatchFn - LLVM objc_exception_match function. |
Chris Lattner | 34b02a1 | 2009-04-22 02:26:14 +0000 | [diff] [blame] | 579 | llvm::Constant *getExceptionMatchFn() { |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 580 | llvm::Type *params[] = { ClassPtrTy, ObjectPtrTy }; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 581 | return CGM.CreateRuntimeFunction( |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 582 | llvm::FunctionType::get(CGM.Int32Ty, params, false), |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 583 | "objc_exception_match"); |
Chris Lattner | 34b02a1 | 2009-04-22 02:26:14 +0000 | [diff] [blame] | 584 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 585 | |
Anders Carlsson | 124526b | 2008-09-09 10:10:21 +0000 | [diff] [blame] | 586 | /// SetJmpFn - LLVM _setjmp function. |
Chris Lattner | 34b02a1 | 2009-04-22 02:26:14 +0000 | [diff] [blame] | 587 | llvm::Constant *getSetJmpFn() { |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 588 | // This is specifically the prototype for x86. |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 589 | llvm::Type *params[] = { CGM.Int32Ty->getPointerTo() }; |
Bill Wendling | c4c62fd | 2013-01-31 00:30:05 +0000 | [diff] [blame] | 590 | return |
| 591 | CGM.CreateRuntimeFunction(llvm::FunctionType::get(CGM.Int32Ty, |
| 592 | params, false), |
| 593 | "_setjmp", |
| 594 | llvm::AttributeSet::get(CGM.getLLVMContext(), |
| 595 | llvm::AttributeSet::FunctionIndex, |
| 596 | llvm::Attribute::NonLazyBind)); |
Chris Lattner | 34b02a1 | 2009-04-22 02:26:14 +0000 | [diff] [blame] | 597 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 598 | |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 599 | public: |
| 600 | ObjCTypesHelper(CodeGen::CodeGenModule &cgm); |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 601 | }; |
| 602 | |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 603 | /// ObjCNonFragileABITypesHelper - will have all types needed by objective-c's |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 604 | /// modern abi |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 605 | class ObjCNonFragileABITypesHelper : public ObjCCommonTypesHelper { |
Fariborz Jahanian | 83a8a75 | 2009-02-04 20:42:28 +0000 | [diff] [blame] | 606 | public: |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 607 | // MethodListnfABITy - LLVM for struct _method_list_t |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 608 | llvm::StructType *MethodListnfABITy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 609 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 610 | // MethodListnfABIPtrTy - LLVM for struct _method_list_t* |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 611 | llvm::Type *MethodListnfABIPtrTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 612 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 613 | // ProtocolnfABITy = LLVM for struct _protocol_t |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 614 | llvm::StructType *ProtocolnfABITy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 615 | |
Daniel Dunbar | 948e258 | 2009-02-15 07:36:20 +0000 | [diff] [blame] | 616 | // ProtocolnfABIPtrTy = LLVM for struct _protocol_t* |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 617 | llvm::Type *ProtocolnfABIPtrTy; |
Daniel Dunbar | 948e258 | 2009-02-15 07:36:20 +0000 | [diff] [blame] | 618 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 619 | // ProtocolListnfABITy - LLVM for struct _objc_protocol_list |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 620 | llvm::StructType *ProtocolListnfABITy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 621 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 622 | // ProtocolListnfABIPtrTy - LLVM for struct _objc_protocol_list* |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 623 | llvm::Type *ProtocolListnfABIPtrTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 624 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 625 | // ClassnfABITy - LLVM for struct _class_t |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 626 | llvm::StructType *ClassnfABITy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 627 | |
Fariborz Jahanian | aa23b57 | 2009-01-23 23:53:38 +0000 | [diff] [blame] | 628 | // ClassnfABIPtrTy - LLVM for struct _class_t* |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 629 | llvm::Type *ClassnfABIPtrTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 630 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 631 | // IvarnfABITy - LLVM for struct _ivar_t |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 632 | llvm::StructType *IvarnfABITy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 633 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 634 | // IvarListnfABITy - LLVM for struct _ivar_list_t |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 635 | llvm::StructType *IvarListnfABITy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 636 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 637 | // IvarListnfABIPtrTy = LLVM for struct _ivar_list_t* |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 638 | llvm::Type *IvarListnfABIPtrTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 639 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 640 | // ClassRonfABITy - LLVM for struct _class_ro_t |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 641 | llvm::StructType *ClassRonfABITy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 642 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 643 | // ImpnfABITy - LLVM for id (*)(id, SEL, ...) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 644 | llvm::Type *ImpnfABITy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 645 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 646 | // CategorynfABITy - LLVM for struct _category_t |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 647 | llvm::StructType *CategorynfABITy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 648 | |
Fariborz Jahanian | 2e4672b | 2009-02-03 23:49:23 +0000 | [diff] [blame] | 649 | // New types for nonfragile abi messaging. |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 650 | |
Fariborz Jahanian | 2e4672b | 2009-02-03 23:49:23 +0000 | [diff] [blame] | 651 | // MessageRefTy - LLVM for: |
| 652 | // struct _message_ref_t { |
| 653 | // IMP messenger; |
| 654 | // SEL name; |
| 655 | // }; |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 656 | llvm::StructType *MessageRefTy; |
Fariborz Jahanian | 83a8a75 | 2009-02-04 20:42:28 +0000 | [diff] [blame] | 657 | // MessageRefCTy - clang type for struct _message_ref_t |
| 658 | QualType MessageRefCTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 659 | |
Fariborz Jahanian | 2e4672b | 2009-02-03 23:49:23 +0000 | [diff] [blame] | 660 | // MessageRefPtrTy - LLVM for struct _message_ref_t* |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 661 | llvm::Type *MessageRefPtrTy; |
Fariborz Jahanian | 83a8a75 | 2009-02-04 20:42:28 +0000 | [diff] [blame] | 662 | // MessageRefCPtrTy - clang type for struct _message_ref_t* |
| 663 | QualType MessageRefCPtrTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 664 | |
Fariborz Jahanian | 2e4672b | 2009-02-03 23:49:23 +0000 | [diff] [blame] | 665 | // SuperMessageRefTy - LLVM for: |
| 666 | // struct _super_message_ref_t { |
| 667 | // SUPER_IMP messenger; |
| 668 | // SEL name; |
| 669 | // }; |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 670 | llvm::StructType *SuperMessageRefTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 671 | |
Fariborz Jahanian | 2e4672b | 2009-02-03 23:49:23 +0000 | [diff] [blame] | 672 | // SuperMessageRefPtrTy - LLVM for struct _super_message_ref_t* |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 673 | llvm::Type *SuperMessageRefPtrTy; |
Daniel Dunbar | 8ecbaf2 | 2009-02-24 07:47:38 +0000 | [diff] [blame] | 674 | |
Chris Lattner | 1c02f86 | 2009-04-22 02:53:24 +0000 | [diff] [blame] | 675 | llvm::Constant *getMessageSendFixupFn() { |
| 676 | // id objc_msgSend_fixup(id, struct message_ref_t*, ...) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 677 | llvm::Type *params[] = { ObjectPtrTy, MessageRefPtrTy }; |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 678 | return CGM.CreateRuntimeFunction(llvm::FunctionType::get(ObjectPtrTy, |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 679 | params, true), |
Chris Lattner | 1c02f86 | 2009-04-22 02:53:24 +0000 | [diff] [blame] | 680 | "objc_msgSend_fixup"); |
| 681 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 682 | |
Chris Lattner | 1c02f86 | 2009-04-22 02:53:24 +0000 | [diff] [blame] | 683 | llvm::Constant *getMessageSendFpretFixupFn() { |
| 684 | // id objc_msgSend_fpret_fixup(id, struct message_ref_t*, ...) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 685 | llvm::Type *params[] = { ObjectPtrTy, MessageRefPtrTy }; |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 686 | return CGM.CreateRuntimeFunction(llvm::FunctionType::get(ObjectPtrTy, |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 687 | params, true), |
Chris Lattner | 1c02f86 | 2009-04-22 02:53:24 +0000 | [diff] [blame] | 688 | "objc_msgSend_fpret_fixup"); |
| 689 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 690 | |
Chris Lattner | 1c02f86 | 2009-04-22 02:53:24 +0000 | [diff] [blame] | 691 | llvm::Constant *getMessageSendStretFixupFn() { |
| 692 | // id objc_msgSend_stret_fixup(id, struct message_ref_t*, ...) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 693 | llvm::Type *params[] = { ObjectPtrTy, MessageRefPtrTy }; |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 694 | return CGM.CreateRuntimeFunction(llvm::FunctionType::get(ObjectPtrTy, |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 695 | params, true), |
Chris Lattner | 1c02f86 | 2009-04-22 02:53:24 +0000 | [diff] [blame] | 696 | "objc_msgSend_stret_fixup"); |
| 697 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 698 | |
Chris Lattner | 1c02f86 | 2009-04-22 02:53:24 +0000 | [diff] [blame] | 699 | llvm::Constant *getMessageSendSuper2FixupFn() { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 700 | // id objc_msgSendSuper2_fixup (struct objc_super *, |
Chris Lattner | 1c02f86 | 2009-04-22 02:53:24 +0000 | [diff] [blame] | 701 | // struct _super_message_ref_t*, ...) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 702 | llvm::Type *params[] = { SuperPtrTy, SuperMessageRefPtrTy }; |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 703 | return CGM.CreateRuntimeFunction(llvm::FunctionType::get(ObjectPtrTy, |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 704 | params, true), |
Chris Lattner | 1c02f86 | 2009-04-22 02:53:24 +0000 | [diff] [blame] | 705 | "objc_msgSendSuper2_fixup"); |
| 706 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 707 | |
Chris Lattner | 1c02f86 | 2009-04-22 02:53:24 +0000 | [diff] [blame] | 708 | llvm::Constant *getMessageSendSuper2StretFixupFn() { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 709 | // id objc_msgSendSuper2_stret_fixup(struct objc_super *, |
Chris Lattner | 1c02f86 | 2009-04-22 02:53:24 +0000 | [diff] [blame] | 710 | // struct _super_message_ref_t*, ...) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 711 | llvm::Type *params[] = { SuperPtrTy, SuperMessageRefPtrTy }; |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 712 | return CGM.CreateRuntimeFunction(llvm::FunctionType::get(ObjectPtrTy, |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 713 | params, true), |
Chris Lattner | 1c02f86 | 2009-04-22 02:53:24 +0000 | [diff] [blame] | 714 | "objc_msgSendSuper2_stret_fixup"); |
| 715 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 716 | |
Chris Lattner | 8a56911 | 2009-04-22 02:15:23 +0000 | [diff] [blame] | 717 | llvm::Constant *getObjCEndCatchFn() { |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 718 | return CGM.CreateRuntimeFunction(llvm::FunctionType::get(CGM.VoidTy, false), |
Chris Lattner | 8a56911 | 2009-04-22 02:15:23 +0000 | [diff] [blame] | 719 | "objc_end_catch"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 720 | |
Chris Lattner | 8a56911 | 2009-04-22 02:15:23 +0000 | [diff] [blame] | 721 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 722 | |
Chris Lattner | 8a56911 | 2009-04-22 02:15:23 +0000 | [diff] [blame] | 723 | llvm::Constant *getObjCBeginCatchFn() { |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 724 | llvm::Type *params[] = { Int8PtrTy }; |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 725 | return CGM.CreateRuntimeFunction(llvm::FunctionType::get(Int8PtrTy, |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 726 | params, false), |
Chris Lattner | 8a56911 | 2009-04-22 02:15:23 +0000 | [diff] [blame] | 727 | "objc_begin_catch"); |
| 728 | } |
Daniel Dunbar | e588b99 | 2009-03-01 04:46:24 +0000 | [diff] [blame] | 729 | |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 730 | llvm::StructType *EHTypeTy; |
| 731 | llvm::Type *EHTypePtrTy; |
Fariborz Jahanian | 9d96bce | 2011-06-22 20:21:51 +0000 | [diff] [blame] | 732 | |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 733 | ObjCNonFragileABITypesHelper(CodeGen::CodeGenModule &cgm); |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 734 | }; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 735 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 736 | class CGObjCCommonMac : public CodeGen::CGObjCRuntime { |
Fariborz Jahanian | 9397e1d | 2009-03-11 20:59:05 +0000 | [diff] [blame] | 737 | public: |
Fariborz Jahanian | 9397e1d | 2009-03-11 20:59:05 +0000 | [diff] [blame] | 738 | class SKIP_SCAN { |
Daniel Dunbar | 8b2926c | 2009-05-03 13:44:42 +0000 | [diff] [blame] | 739 | public: |
| 740 | unsigned skip; |
| 741 | unsigned scan; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 742 | SKIP_SCAN(unsigned _skip = 0, unsigned _scan = 0) |
Daniel Dunbar | 8b2926c | 2009-05-03 13:44:42 +0000 | [diff] [blame] | 743 | : skip(_skip), scan(_scan) {} |
Fariborz Jahanian | 9397e1d | 2009-03-11 20:59:05 +0000 | [diff] [blame] | 744 | }; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 745 | |
Fariborz Jahanian | e11dba8 | 2012-10-25 21:15:04 +0000 | [diff] [blame] | 746 | /// opcode for captured block variables layout 'instructions'. |
| 747 | /// In the following descriptions, 'I' is the value of the immediate field. |
| 748 | /// (field following the opcode). |
| 749 | /// |
| 750 | enum BLOCK_LAYOUT_OPCODE { |
| 751 | /// An operator which affects how the following layout should be |
| 752 | /// interpreted. |
| 753 | /// I == 0: Halt interpretation and treat everything else as |
| 754 | /// a non-pointer. Note that this instruction is equal |
| 755 | /// to '\0'. |
| 756 | /// I != 0: Currently unused. |
| 757 | BLOCK_LAYOUT_OPERATOR = 0, |
| 758 | |
| 759 | /// The next I+1 bytes do not contain a value of object pointer type. |
| 760 | /// Note that this can leave the stream unaligned, meaning that |
| 761 | /// subsequent word-size instructions do not begin at a multiple of |
| 762 | /// the pointer size. |
| 763 | BLOCK_LAYOUT_NON_OBJECT_BYTES = 1, |
| 764 | |
| 765 | /// The next I+1 words do not contain a value of object pointer type. |
| 766 | /// This is simply an optimized version of BLOCK_LAYOUT_BYTES for |
| 767 | /// when the required skip quantity is a multiple of the pointer size. |
| 768 | BLOCK_LAYOUT_NON_OBJECT_WORDS = 2, |
| 769 | |
| 770 | /// The next I+1 words are __strong pointers to Objective-C |
| 771 | /// objects or blocks. |
| 772 | BLOCK_LAYOUT_STRONG = 3, |
| 773 | |
| 774 | /// The next I+1 words are pointers to __block variables. |
| 775 | BLOCK_LAYOUT_BYREF = 4, |
| 776 | |
| 777 | /// The next I+1 words are __weak pointers to Objective-C |
| 778 | /// objects or blocks. |
| 779 | BLOCK_LAYOUT_WEAK = 5, |
| 780 | |
| 781 | /// The next I+1 words are __unsafe_unretained pointers to |
| 782 | /// Objective-C objects or blocks. |
| 783 | BLOCK_LAYOUT_UNRETAINED = 6 |
| 784 | |
| 785 | /// The next I+1 words are block or object pointers with some |
| 786 | /// as-yet-unspecified ownership semantics. If we add more |
| 787 | /// flavors of ownership semantics, values will be taken from |
| 788 | /// this range. |
| 789 | /// |
| 790 | /// This is included so that older tools can at least continue |
| 791 | /// processing the layout past such things. |
| 792 | //BLOCK_LAYOUT_OWNERSHIP_UNKNOWN = 7..10, |
| 793 | |
| 794 | /// All other opcodes are reserved. Halt interpretation and |
| 795 | /// treat everything else as opaque. |
| 796 | }; |
| 797 | |
| 798 | class RUN_SKIP { |
| 799 | public: |
| 800 | enum BLOCK_LAYOUT_OPCODE opcode; |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 801 | CharUnits block_var_bytepos; |
| 802 | CharUnits block_var_size; |
Fariborz Jahanian | e11dba8 | 2012-10-25 21:15:04 +0000 | [diff] [blame] | 803 | RUN_SKIP(enum BLOCK_LAYOUT_OPCODE Opcode = BLOCK_LAYOUT_OPERATOR, |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 804 | CharUnits BytePos = CharUnits::Zero(), |
| 805 | CharUnits Size = CharUnits::Zero()) |
Fariborz Jahanian | c46b435 | 2012-10-27 21:10:38 +0000 | [diff] [blame] | 806 | : opcode(Opcode), block_var_bytepos(BytePos), block_var_size(Size) {} |
Fariborz Jahanian | e11dba8 | 2012-10-25 21:15:04 +0000 | [diff] [blame] | 807 | |
| 808 | // Allow sorting based on byte pos. |
| 809 | bool operator<(const RUN_SKIP &b) const { |
| 810 | return block_var_bytepos < b.block_var_bytepos; |
| 811 | } |
| 812 | }; |
| 813 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 814 | protected: |
Owen Anderson | 6924382 | 2009-07-13 04:10:07 +0000 | [diff] [blame] | 815 | llvm::LLVMContext &VMContext; |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 816 | // FIXME! May not be needing this after all. |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 817 | unsigned ObjCABI; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 818 | |
Fariborz Jahanian | e11dba8 | 2012-10-25 21:15:04 +0000 | [diff] [blame] | 819 | // arc/mrr layout of captured block literal variables. |
| 820 | SmallVector<RUN_SKIP, 16> RunSkipBlockVars; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 821 | |
Daniel Dunbar | 242d4dc | 2008-08-25 06:02:07 +0000 | [diff] [blame] | 822 | /// LazySymbols - Symbols to generate a lazy reference for. See |
| 823 | /// DefinedSymbols and FinishModule(). |
Daniel Dunbar | 3306349 | 2009-09-07 00:20:42 +0000 | [diff] [blame] | 824 | llvm::SetVector<IdentifierInfo*> LazySymbols; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 825 | |
Daniel Dunbar | 242d4dc | 2008-08-25 06:02:07 +0000 | [diff] [blame] | 826 | /// DefinedSymbols - External symbols which are defined by this |
| 827 | /// module. The symbols in this list and LazySymbols are used to add |
| 828 | /// special linker symbols which ensure that Objective-C modules are |
| 829 | /// linked properly. |
Daniel Dunbar | 3306349 | 2009-09-07 00:20:42 +0000 | [diff] [blame] | 830 | llvm::SetVector<IdentifierInfo*> DefinedSymbols; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 831 | |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 832 | /// ClassNames - uniqued class names. |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 833 | llvm::StringMap<llvm::GlobalVariable*> ClassNames; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 834 | |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 835 | /// MethodVarNames - uniqued method variable names. |
| 836 | llvm::DenseMap<Selector, llvm::GlobalVariable*> MethodVarNames; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 837 | |
Fariborz Jahanian | b9c5b3d | 2010-06-21 22:05:18 +0000 | [diff] [blame] | 838 | /// DefinedCategoryNames - list of category names in form Class_Category. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 839 | llvm::SmallSetVector<std::string, 16> DefinedCategoryNames; |
Fariborz Jahanian | b9c5b3d | 2010-06-21 22:05:18 +0000 | [diff] [blame] | 840 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 841 | /// MethodVarTypes - uniqued method type signatures. We have to use |
| 842 | /// a StringMap here because have no other unique reference. |
| 843 | llvm::StringMap<llvm::GlobalVariable*> MethodVarTypes; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 844 | |
Daniel Dunbar | c45ef60 | 2008-08-26 21:51:14 +0000 | [diff] [blame] | 845 | /// MethodDefinitions - map of methods which have been defined in |
| 846 | /// this translation unit. |
| 847 | llvm::DenseMap<const ObjCMethodDecl*, llvm::Function*> MethodDefinitions; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 848 | |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 849 | /// PropertyNames - uniqued method variable names. |
| 850 | llvm::DenseMap<IdentifierInfo*, llvm::GlobalVariable*> PropertyNames; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 851 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 852 | /// ClassReferences - uniqued class references. |
| 853 | llvm::DenseMap<IdentifierInfo*, llvm::GlobalVariable*> ClassReferences; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 854 | |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 855 | /// SelectorReferences - uniqued selector references. |
| 856 | llvm::DenseMap<Selector, llvm::GlobalVariable*> SelectorReferences; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 857 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 858 | /// Protocols - Protocols for which an objc_protocol structure has |
| 859 | /// been emitted. Forward declarations are handled by creating an |
| 860 | /// empty structure whose initializer is filled in when/if defined. |
| 861 | llvm::DenseMap<IdentifierInfo*, llvm::GlobalVariable*> Protocols; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 862 | |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 863 | /// DefinedProtocols - Protocols which have actually been |
| 864 | /// defined. We should not need this, see FIXME in GenerateProtocol. |
| 865 | llvm::DenseSet<IdentifierInfo*> DefinedProtocols; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 866 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 867 | /// DefinedClasses - List of defined classes. |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 868 | SmallVector<llvm::GlobalValue*, 16> DefinedClasses; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 869 | |
| 870 | /// ImplementedClasses - List of @implemented classes. |
| 871 | SmallVector<const ObjCInterfaceDecl*, 16> ImplementedClasses; |
Daniel Dunbar | 74d4b12 | 2009-05-15 22:33:15 +0000 | [diff] [blame] | 872 | |
| 873 | /// DefinedNonLazyClasses - List of defined "non-lazy" classes. |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 874 | SmallVector<llvm::GlobalValue*, 16> DefinedNonLazyClasses; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 875 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 876 | /// DefinedCategories - List of defined categories. |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 877 | SmallVector<llvm::GlobalValue*, 16> DefinedCategories; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 878 | |
Daniel Dunbar | 74d4b12 | 2009-05-15 22:33:15 +0000 | [diff] [blame] | 879 | /// DefinedNonLazyCategories - List of defined "non-lazy" categories. |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 880 | SmallVector<llvm::GlobalValue*, 16> DefinedNonLazyCategories; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 881 | |
Fariborz Jahanian | 56210f7 | 2009-01-21 23:34:32 +0000 | [diff] [blame] | 882 | /// GetNameForMethod - Return a name for the given method. |
| 883 | /// \param[out] NameOut - The return value. |
| 884 | void GetNameForMethod(const ObjCMethodDecl *OMD, |
| 885 | const ObjCContainerDecl *CD, |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 886 | SmallVectorImpl<char> &NameOut); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 887 | |
Fariborz Jahanian | 56210f7 | 2009-01-21 23:34:32 +0000 | [diff] [blame] | 888 | /// GetMethodVarName - Return a unique constant for the given |
| 889 | /// selector's name. The return value has type char *. |
| 890 | llvm::Constant *GetMethodVarName(Selector Sel); |
| 891 | llvm::Constant *GetMethodVarName(IdentifierInfo *Ident); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 892 | |
Fariborz Jahanian | 56210f7 | 2009-01-21 23:34:32 +0000 | [diff] [blame] | 893 | /// GetMethodVarType - Return a unique constant for the given |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 894 | /// method's type encoding string. The return value has type char *. |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 895 | |
Fariborz Jahanian | 56210f7 | 2009-01-21 23:34:32 +0000 | [diff] [blame] | 896 | // FIXME: This is a horrible name. |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 897 | llvm::Constant *GetMethodVarType(const ObjCMethodDecl *D, |
| 898 | bool Extended = false); |
Daniel Dunbar | 3e5f0d8 | 2009-04-20 06:54:31 +0000 | [diff] [blame] | 899 | llvm::Constant *GetMethodVarType(const FieldDecl *D); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 900 | |
Fariborz Jahanian | 56210f7 | 2009-01-21 23:34:32 +0000 | [diff] [blame] | 901 | /// GetPropertyName - Return a unique constant for the given |
| 902 | /// name. The return value has type char *. |
| 903 | llvm::Constant *GetPropertyName(IdentifierInfo *Ident); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 904 | |
Fariborz Jahanian | 56210f7 | 2009-01-21 23:34:32 +0000 | [diff] [blame] | 905 | // FIXME: This can be dropped once string functions are unified. |
| 906 | llvm::Constant *GetPropertyTypeString(const ObjCPropertyDecl *PD, |
| 907 | const Decl *Container); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 908 | |
Fariborz Jahanian | 058a1b7 | 2009-01-24 20:21:50 +0000 | [diff] [blame] | 909 | /// GetClassName - Return a unique constant for the given selector's |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 910 | /// runtime name (which may change via use of objc_runtime_name attribute on |
| 911 | /// class or protocol definition. The return value has type char *. |
| 912 | llvm::Constant *GetClassName(StringRef RuntimeName); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 913 | |
Argyrios Kyrtzidis | 9d50c06 | 2010-08-09 10:54:20 +0000 | [diff] [blame] | 914 | llvm::Function *GetMethodDefinition(const ObjCMethodDecl *MD); |
| 915 | |
Fariborz Jahanian | d61a50a | 2009-03-05 22:39:55 +0000 | [diff] [blame] | 916 | /// BuildIvarLayout - Builds ivar layout bitmap for the class |
| 917 | /// implementation for the __strong or __weak case. |
| 918 | /// |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 919 | /// \param hasMRCWeakIvars - Whether we are compiling in MRC and there |
| 920 | /// are any weak ivars defined directly in the class. Meaningless unless |
| 921 | /// building a weak layout. Does not guarantee that the layout will |
| 922 | /// actually have any entries, because the ivar might be under-aligned. |
Fariborz Jahanian | c8ce9c8 | 2009-03-12 22:50:49 +0000 | [diff] [blame] | 923 | llvm::Constant *BuildIvarLayout(const ObjCImplementationDecl *OI, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 924 | CharUnits beginOffset, |
| 925 | CharUnits endOffset, |
| 926 | bool forStrongLayout, |
| 927 | bool hasMRCWeakIvars); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 928 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 929 | llvm::Constant *BuildStrongIvarLayout(const ObjCImplementationDecl *OI, |
| 930 | CharUnits beginOffset, |
| 931 | CharUnits endOffset) { |
| 932 | return BuildIvarLayout(OI, beginOffset, endOffset, true, false); |
| 933 | } |
| 934 | |
| 935 | llvm::Constant *BuildWeakIvarLayout(const ObjCImplementationDecl *OI, |
| 936 | CharUnits beginOffset, |
| 937 | CharUnits endOffset, |
| 938 | bool hasMRCWeakIvars) { |
| 939 | return BuildIvarLayout(OI, beginOffset, endOffset, false, hasMRCWeakIvars); |
| 940 | } |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 941 | |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 942 | Qualifiers::ObjCLifetime getBlockCaptureLifetime(QualType QT, bool ByrefLayout); |
Fariborz Jahanian | 44fcff9 | 2012-11-02 22:51:18 +0000 | [diff] [blame] | 943 | |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 944 | void UpdateRunSkipBlockVars(bool IsByref, |
| 945 | Qualifiers::ObjCLifetime LifeTime, |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 946 | CharUnits FieldOffset, |
| 947 | CharUnits FieldSize); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 948 | |
| 949 | void BuildRCBlockVarRecordLayout(const RecordType *RT, |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 950 | CharUnits BytePos, bool &HasUnion, |
| 951 | bool ByrefLayout=false); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 952 | |
| 953 | void BuildRCRecordLayout(const llvm::StructLayout *RecLayout, |
| 954 | const RecordDecl *RD, |
| 955 | ArrayRef<const FieldDecl*> RecFields, |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 956 | CharUnits BytePos, bool &HasUnion, |
| 957 | bool ByrefLayout); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 958 | |
Fariborz Jahanian | f22ae65 | 2012-11-01 18:32:55 +0000 | [diff] [blame] | 959 | uint64_t InlineLayoutInstruction(SmallVectorImpl<unsigned char> &Layout); |
| 960 | |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 961 | llvm::Constant *getBitmapBlockLayout(bool ComputeByrefLayout); |
| 962 | |
Fariborz Jahanian | d80d81b | 2009-03-05 19:17:31 +0000 | [diff] [blame] | 963 | /// GetIvarLayoutName - Returns a unique constant for the given |
| 964 | /// ivar layout bitmap. |
| 965 | llvm::Constant *GetIvarLayoutName(IdentifierInfo *Ident, |
| 966 | const ObjCCommonTypesHelper &ObjCTypes); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 967 | |
Fariborz Jahanian | 5de14dc | 2009-01-28 22:18:42 +0000 | [diff] [blame] | 968 | /// EmitPropertyList - Emit the given property list. The return |
| 969 | /// value has type PropertyListPtrTy. |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 970 | llvm::Constant *EmitPropertyList(Twine Name, |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 971 | const Decl *Container, |
Fariborz Jahanian | 5de14dc | 2009-01-28 22:18:42 +0000 | [diff] [blame] | 972 | const ObjCContainerDecl *OCD, |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 973 | const ObjCCommonTypesHelper &ObjCTypes, |
| 974 | bool IsClassProperty); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 975 | |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 976 | /// EmitProtocolMethodTypes - Generate the array of extended method type |
| 977 | /// strings. The return value has type Int8PtrPtrTy. |
| 978 | llvm::Constant *EmitProtocolMethodTypes(Twine Name, |
Bill Wendling | bb02855 | 2012-02-07 09:25:09 +0000 | [diff] [blame] | 979 | ArrayRef<llvm::Constant*> MethodTypes, |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 980 | const ObjCCommonTypesHelper &ObjCTypes); |
| 981 | |
Fariborz Jahanian | 191dcd7 | 2009-12-12 21:26:21 +0000 | [diff] [blame] | 982 | /// PushProtocolProperties - Push protocol's property on the input stack. |
Bill Wendling | 3964e62 | 2012-02-09 22:16:49 +0000 | [diff] [blame] | 983 | void PushProtocolProperties( |
| 984 | llvm::SmallPtrSet<const IdentifierInfo*, 16> &PropertySet, |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 985 | SmallVectorImpl<llvm::Constant*> &Properties, |
Bill Wendling | 3964e62 | 2012-02-09 22:16:49 +0000 | [diff] [blame] | 986 | const Decl *Container, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 987 | const ObjCProtocolDecl *Proto, |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 988 | const ObjCCommonTypesHelper &ObjCTypes, |
| 989 | bool IsClassProperty); |
Fariborz Jahanian | 191dcd7 | 2009-12-12 21:26:21 +0000 | [diff] [blame] | 990 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 991 | /// GetProtocolRef - Return a reference to the internal protocol |
| 992 | /// description, creating an empty one if it has not been |
| 993 | /// defined. The return value has type ProtocolPtrTy. |
| 994 | llvm::Constant *GetProtocolRef(const ObjCProtocolDecl *PD); |
Fariborz Jahanian | b21f07e | 2009-03-08 20:18:37 +0000 | [diff] [blame] | 995 | |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 996 | /// Return a reference to the given Class using runtime calls rather than |
| 997 | /// by a symbol reference. |
| 998 | llvm::Value *EmitClassRefViaRuntime(CodeGenFunction &CGF, |
| 999 | const ObjCInterfaceDecl *ID, |
| 1000 | ObjCCommonTypesHelper &ObjCTypes); |
| 1001 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1002 | public: |
Daniel Dunbar | fd65d37 | 2009-03-09 20:09:19 +0000 | [diff] [blame] | 1003 | /// CreateMetadataVar - Create a global variable with internal |
| 1004 | /// linkage for use by the Objective-C runtime. |
| 1005 | /// |
| 1006 | /// This is a convenience wrapper which not only creates the |
| 1007 | /// variable, but also sets the section and alignment and adds the |
Chris Lattner | ad64e02 | 2009-07-17 23:57:13 +0000 | [diff] [blame] | 1008 | /// global to the "llvm.used" list. |
Daniel Dunbar | 35bd763 | 2009-03-09 20:50:13 +0000 | [diff] [blame] | 1009 | /// |
| 1010 | /// \param Name - The variable name. |
| 1011 | /// \param Init - The variable initializer; this is also used to |
| 1012 | /// define the type of the variable. |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 1013 | /// \param Section - The section the variable should go into, or empty. |
Daniel Dunbar | 35bd763 | 2009-03-09 20:50:13 +0000 | [diff] [blame] | 1014 | /// \param Align - The alignment for the variable, or 0. |
| 1015 | /// \param AddToUsed - Whether the variable should be added to |
Daniel Dunbar | c158306 | 2009-04-14 17:42:51 +0000 | [diff] [blame] | 1016 | /// "llvm.used". |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 1017 | llvm::GlobalVariable *CreateMetadataVar(Twine Name, llvm::Constant *Init, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1018 | StringRef Section, CharUnits Align, |
Daniel Dunbar | 35bd763 | 2009-03-09 20:50:13 +0000 | [diff] [blame] | 1019 | bool AddToUsed); |
Daniel Dunbar | fd65d37 | 2009-03-09 20:09:19 +0000 | [diff] [blame] | 1020 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1021 | protected: |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 1022 | CodeGen::RValue EmitMessageSend(CodeGen::CodeGenFunction &CGF, |
| 1023 | ReturnValueSlot Return, |
| 1024 | QualType ResultType, |
| 1025 | llvm::Value *Sel, |
| 1026 | llvm::Value *Arg0, |
| 1027 | QualType Arg0Ty, |
| 1028 | bool IsSuper, |
| 1029 | const CallArgList &CallArgs, |
| 1030 | const ObjCMethodDecl *OMD, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1031 | const ObjCInterfaceDecl *ClassReceiver, |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 1032 | const ObjCCommonTypesHelper &ObjCTypes); |
Daniel Dunbar | 3e5f0d8 | 2009-04-20 06:54:31 +0000 | [diff] [blame] | 1033 | |
Daniel Dunbar | fce176b | 2010-04-25 20:39:01 +0000 | [diff] [blame] | 1034 | /// EmitImageInfo - Emit the image info marker used to encode some module |
| 1035 | /// level information. |
| 1036 | void EmitImageInfo(); |
| 1037 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 1038 | public: |
Owen Anderson | 6924382 | 2009-07-13 04:10:07 +0000 | [diff] [blame] | 1039 | CGObjCCommonMac(CodeGen::CodeGenModule &cgm) : |
John McCall | de5d3c7 | 2012-02-17 03:33:10 +0000 | [diff] [blame] | 1040 | CGObjCRuntime(cgm), VMContext(cgm.getLLVMContext()) { } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1041 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1042 | bool isNonFragileABI() const { |
| 1043 | return ObjCABI == 2; |
| 1044 | } |
| 1045 | |
| 1046 | ConstantAddress GenerateConstantString(const StringLiteral *SL) override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1047 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1048 | llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 1049 | const ObjCContainerDecl *CD=nullptr) override; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1050 | |
| 1051 | void GenerateProtocol(const ObjCProtocolDecl *PD) override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1052 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 1053 | /// GetOrEmitProtocol - Get the protocol object for the given |
| 1054 | /// declaration, emitting it if necessary. The return value has type |
| 1055 | /// ProtocolPtrTy. |
| 1056 | virtual llvm::Constant *GetOrEmitProtocol(const ObjCProtocolDecl *PD)=0; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1057 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 1058 | /// GetOrEmitProtocolRef - Get a forward reference to the protocol |
| 1059 | /// object for the given declaration, emitting it if needed. These |
| 1060 | /// forward references will be filled in with empty bodies if no |
| 1061 | /// definition is seen. The return value has type ProtocolPtrTy. |
| 1062 | virtual llvm::Constant *GetOrEmitProtocolRef(const ObjCProtocolDecl *PD)=0; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1063 | llvm::Constant *BuildGCBlockLayout(CodeGen::CodeGenModule &CGM, |
| 1064 | const CGBlockInfo &blockInfo) override; |
| 1065 | llvm::Constant *BuildRCBlockLayout(CodeGen::CodeGenModule &CGM, |
| 1066 | const CGBlockInfo &blockInfo) override; |
| 1067 | |
| 1068 | llvm::Constant *BuildByrefLayout(CodeGen::CodeGenModule &CGM, |
| 1069 | QualType T) override; |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 1070 | }; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1071 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 1072 | class CGObjCMac : public CGObjCCommonMac { |
| 1073 | private: |
| 1074 | ObjCTypesHelper ObjCTypes; |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 1075 | |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1076 | /// EmitModuleInfo - Another marker encoding module level |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1077 | /// information. |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1078 | void EmitModuleInfo(); |
| 1079 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 1080 | /// EmitModuleSymols - Emit module symbols, the list of defined |
| 1081 | /// classes and categories. The result has type SymtabPtrTy. |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1082 | llvm::Constant *EmitModuleSymbols(); |
| 1083 | |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 1084 | /// FinishModule - Write out global data structures at the end of |
| 1085 | /// processing a translation unit. |
| 1086 | void FinishModule(); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1087 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 1088 | /// EmitClassExtension - Generate the class extension structure used |
| 1089 | /// to store the weak ivar layout and properties. The return value |
| 1090 | /// has type ClassExtensionPtrTy. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1091 | llvm::Constant *EmitClassExtension(const ObjCImplementationDecl *ID, |
| 1092 | CharUnits instanceSize, |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 1093 | bool hasMRCWeakIvars, |
| 1094 | bool isClassProperty); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 1095 | |
| 1096 | /// EmitClassRef - Return a Value*, of type ObjCTypes.ClassPtrTy, |
| 1097 | /// for the given class. |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 1098 | llvm::Value *EmitClassRef(CodeGenFunction &CGF, |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 1099 | const ObjCInterfaceDecl *ID); |
Fariborz Jahanian | b0069ee | 2009-11-12 20:14:24 +0000 | [diff] [blame] | 1100 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 1101 | llvm::Value *EmitClassRefFromId(CodeGenFunction &CGF, |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 1102 | IdentifierInfo *II); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1103 | |
| 1104 | llvm::Value *EmitNSAutoreleasePoolClassRef(CodeGenFunction &CGF) override; |
| 1105 | |
Fariborz Jahanian | b0069ee | 2009-11-12 20:14:24 +0000 | [diff] [blame] | 1106 | /// EmitSuperClassRef - Emits reference to class's main metadata class. |
| 1107 | llvm::Value *EmitSuperClassRef(const ObjCInterfaceDecl *ID); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 1108 | |
| 1109 | /// EmitIvarList - Emit the ivar list for the given |
| 1110 | /// implementation. If ForClass is true the list of class ivars |
| 1111 | /// (i.e. metaclass ivars) is emitted, otherwise the list of |
| 1112 | /// interface ivars will be emitted. The return value has type |
| 1113 | /// IvarListPtrTy. |
| 1114 | llvm::Constant *EmitIvarList(const ObjCImplementationDecl *ID, |
Fariborz Jahanian | 46b86c6 | 2009-01-28 19:12:34 +0000 | [diff] [blame] | 1115 | bool ForClass); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1116 | |
Daniel Dunbar | f56f191 | 2008-08-25 08:19:24 +0000 | [diff] [blame] | 1117 | /// EmitMetaClass - Emit a forward reference to the class structure |
| 1118 | /// for the metaclass of the given interface. The return value has |
| 1119 | /// type ClassPtrTy. |
| 1120 | llvm::Constant *EmitMetaClassRef(const ObjCInterfaceDecl *ID); |
| 1121 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 1122 | /// EmitMetaClass - Emit a class structure for the metaclass of the |
Daniel Dunbar | f56f191 | 2008-08-25 08:19:24 +0000 | [diff] [blame] | 1123 | /// given implementation. The return value has type ClassPtrTy. |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 1124 | llvm::Constant *EmitMetaClass(const ObjCImplementationDecl *ID, |
| 1125 | llvm::Constant *Protocols, |
Bill Wendling | bb02855 | 2012-02-07 09:25:09 +0000 | [diff] [blame] | 1126 | ArrayRef<llvm::Constant*> Methods); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1127 | |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 1128 | llvm::Constant *GetMethodConstant(const ObjCMethodDecl *MD); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1129 | |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 1130 | llvm::Constant *GetMethodDescriptionConstant(const ObjCMethodDecl *MD); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 1131 | |
| 1132 | /// EmitMethodList - Emit the method list for the given |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 1133 | /// implementation. The return value has type MethodListPtrTy. |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 1134 | llvm::Constant *EmitMethodList(Twine Name, StringRef Section, |
| 1135 | ArrayRef<llvm::Constant *> Methods); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 1136 | |
| 1137 | /// EmitMethodDescList - Emit a method description list for a list of |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1138 | /// method declarations. |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1139 | /// - TypeName: The name for the type containing the methods. |
Sylvestre Ledru | f3477c1 | 2012-09-27 10:16:10 +0000 | [diff] [blame] | 1140 | /// - IsProtocol: True iff these methods are for a protocol. |
| 1141 | /// - ClassMethds: True iff these are class methods. |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1142 | /// - Required: When true, only "required" methods are |
| 1143 | /// listed. Similarly, when false only "optional" methods are |
| 1144 | /// listed. For classes this should always be true. |
| 1145 | /// - begin, end: The method list to output. |
| 1146 | /// |
| 1147 | /// The return value has type MethodDescriptionListPtrTy. |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 1148 | llvm::Constant *EmitMethodDescList(Twine Name, StringRef Section, |
| 1149 | ArrayRef<llvm::Constant *> Methods); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1150 | |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 1151 | /// GetOrEmitProtocol - Get the protocol object for the given |
| 1152 | /// declaration, emitting it if necessary. The return value has type |
| 1153 | /// ProtocolPtrTy. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1154 | llvm::Constant *GetOrEmitProtocol(const ObjCProtocolDecl *PD) override; |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 1155 | |
| 1156 | /// GetOrEmitProtocolRef - Get a forward reference to the protocol |
| 1157 | /// object for the given declaration, emitting it if needed. These |
| 1158 | /// forward references will be filled in with empty bodies if no |
| 1159 | /// definition is seen. The return value has type ProtocolPtrTy. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1160 | llvm::Constant *GetOrEmitProtocolRef(const ObjCProtocolDecl *PD) override; |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 1161 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1162 | /// EmitProtocolExtension - Generate the protocol extension |
| 1163 | /// structure used to store optional instance and class methods, and |
| 1164 | /// protocol properties. The return value has type |
| 1165 | /// ProtocolExtensionPtrTy. |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 1166 | llvm::Constant * |
| 1167 | EmitProtocolExtension(const ObjCProtocolDecl *PD, |
Bill Wendling | bb02855 | 2012-02-07 09:25:09 +0000 | [diff] [blame] | 1168 | ArrayRef<llvm::Constant*> OptInstanceMethods, |
| 1169 | ArrayRef<llvm::Constant*> OptClassMethods, |
| 1170 | ArrayRef<llvm::Constant*> MethodTypesExt); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1171 | |
| 1172 | /// EmitProtocolList - Generate the list of referenced |
| 1173 | /// protocols. The return value has type ProtocolListPtrTy. |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 1174 | llvm::Constant *EmitProtocolList(Twine Name, |
Daniel Dunbar | dbc93370 | 2008-08-21 21:57:41 +0000 | [diff] [blame] | 1175 | ObjCProtocolDecl::protocol_iterator begin, |
| 1176 | ObjCProtocolDecl::protocol_iterator end); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1177 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 1178 | /// EmitSelector - Return a Value*, of type ObjCTypes.SelectorPtrTy, |
| 1179 | /// for the given selector. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1180 | llvm::Value *EmitSelector(CodeGenFunction &CGF, Selector Sel); |
| 1181 | Address EmitSelectorAddr(CodeGenFunction &CGF, Selector Sel); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1182 | |
| 1183 | public: |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1184 | CGObjCMac(CodeGen::CodeGenModule &cgm); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1185 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1186 | llvm::Function *ModuleInitFunction() override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1187 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1188 | CodeGen::RValue GenerateMessageSend(CodeGen::CodeGenFunction &CGF, |
| 1189 | ReturnValueSlot Return, |
| 1190 | QualType ResultType, |
| 1191 | Selector Sel, llvm::Value *Receiver, |
| 1192 | const CallArgList &CallArgs, |
| 1193 | const ObjCInterfaceDecl *Class, |
| 1194 | const ObjCMethodDecl *Method) override; |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1195 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1196 | CodeGen::RValue |
Daniel Dunbar | 8f2926b | 2008-08-23 03:46:30 +0000 | [diff] [blame] | 1197 | GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1198 | ReturnValueSlot Return, QualType ResultType, |
| 1199 | Selector Sel, const ObjCInterfaceDecl *Class, |
| 1200 | bool isCategoryImpl, llvm::Value *Receiver, |
| 1201 | bool IsClassMessage, const CallArgList &CallArgs, |
| 1202 | const ObjCMethodDecl *Method) override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1203 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1204 | llvm::Value *GetClass(CodeGenFunction &CGF, |
| 1205 | const ObjCInterfaceDecl *ID) override; |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1206 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1207 | llvm::Value *GetSelector(CodeGenFunction &CGF, Selector Sel) override; |
| 1208 | Address GetAddrOfSelector(CodeGenFunction &CGF, Selector Sel) override; |
Fariborz Jahanian | df9ccc6 | 2009-05-05 21:36:57 +0000 | [diff] [blame] | 1209 | |
| 1210 | /// The NeXT/Apple runtimes do not support typed selectors; just emit an |
| 1211 | /// untyped one. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1212 | llvm::Value *GetSelector(CodeGenFunction &CGF, |
| 1213 | const ObjCMethodDecl *Method) override; |
Fariborz Jahanian | df9ccc6 | 2009-05-05 21:36:57 +0000 | [diff] [blame] | 1214 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1215 | llvm::Constant *GetEHType(QualType T) override; |
John McCall | 5a18039 | 2010-07-24 00:37:23 +0000 | [diff] [blame] | 1216 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1217 | void GenerateCategory(const ObjCCategoryImplDecl *CMD) override; |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1218 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1219 | void GenerateClass(const ObjCImplementationDecl *ClassDecl) override; |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1220 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1221 | void RegisterAlias(const ObjCCompatibleAliasDecl *OAD) override {} |
David Chisnall | 29254f4 | 2012-01-31 18:59:20 +0000 | [diff] [blame] | 1222 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1223 | llvm::Value *GenerateProtocolRef(CodeGenFunction &CGF, |
| 1224 | const ObjCProtocolDecl *PD) override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1225 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1226 | llvm::Constant *GetPropertyGetFunction() override; |
| 1227 | llvm::Constant *GetPropertySetFunction() override; |
| 1228 | llvm::Constant *GetOptimizedPropertySetFunction(bool atomic, |
| 1229 | bool copy) override; |
| 1230 | llvm::Constant *GetGetStructFunction() override; |
| 1231 | llvm::Constant *GetSetStructFunction() override; |
| 1232 | llvm::Constant *GetCppAtomicObjectGetFunction() override; |
| 1233 | llvm::Constant *GetCppAtomicObjectSetFunction() override; |
| 1234 | llvm::Constant *EnumerationMutationFunction() override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1235 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1236 | void EmitTryStmt(CodeGen::CodeGenFunction &CGF, |
| 1237 | const ObjCAtTryStmt &S) override; |
| 1238 | void EmitSynchronizedStmt(CodeGen::CodeGenFunction &CGF, |
| 1239 | const ObjCAtSynchronizedStmt &S) override; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1240 | void EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, const Stmt &S); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1241 | void EmitThrowStmt(CodeGen::CodeGenFunction &CGF, const ObjCAtThrowStmt &S, |
| 1242 | bool ClearInsertionPoint=true) override; |
| 1243 | llvm::Value * EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1244 | Address AddrWeakObj) override; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1245 | void EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1246 | llvm::Value *src, Address dst) override; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1247 | void EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1248 | llvm::Value *src, Address dest, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1249 | bool threadlocal = false) override; |
| 1250 | void EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1251 | llvm::Value *src, Address dest, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1252 | llvm::Value *ivarOffset) override; |
| 1253 | void EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1254 | llvm::Value *src, Address dest) override; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1255 | void EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1256 | Address dest, Address src, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1257 | llvm::Value *size) override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1258 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1259 | LValue EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, QualType ObjectTy, |
| 1260 | llvm::Value *BaseValue, const ObjCIvarDecl *Ivar, |
| 1261 | unsigned CVRQualifiers) override; |
| 1262 | llvm::Value *EmitIvarOffset(CodeGen::CodeGenFunction &CGF, |
| 1263 | const ObjCInterfaceDecl *Interface, |
| 1264 | const ObjCIvarDecl *Ivar) override; |
| 1265 | |
Fariborz Jahanian | 6f40e22 | 2011-05-17 22:21:16 +0000 | [diff] [blame] | 1266 | /// GetClassGlobal - Return the global variable for the Objective-C |
| 1267 | /// class of the given name. |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 1268 | llvm::GlobalVariable *GetClassGlobal(StringRef Name, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1269 | bool Weak = false) override { |
David Blaikie | b219cfc | 2011-09-23 05:06:16 +0000 | [diff] [blame] | 1270 | llvm_unreachable("CGObjCMac::GetClassGlobal"); |
Fariborz Jahanian | 6f40e22 | 2011-05-17 22:21:16 +0000 | [diff] [blame] | 1271 | } |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1272 | }; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1273 | |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 1274 | class CGObjCNonFragileABIMac : public CGObjCCommonMac { |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 1275 | private: |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 1276 | ObjCNonFragileABITypesHelper ObjCTypes; |
Fariborz Jahanian | aa23b57 | 2009-01-23 23:53:38 +0000 | [diff] [blame] | 1277 | llvm::GlobalVariable* ObjCEmptyCacheVar; |
| 1278 | llvm::GlobalVariable* ObjCEmptyVtableVar; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1279 | |
Daniel Dunbar | 1139452 | 2009-04-18 08:51:00 +0000 | [diff] [blame] | 1280 | /// SuperClassReferences - uniqued super class references. |
| 1281 | llvm::DenseMap<IdentifierInfo*, llvm::GlobalVariable*> SuperClassReferences; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1282 | |
Fariborz Jahanian | 7a06aae | 2009-02-06 20:09:23 +0000 | [diff] [blame] | 1283 | /// MetaClassReferences - uniqued meta class references. |
| 1284 | llvm::DenseMap<IdentifierInfo*, llvm::GlobalVariable*> MetaClassReferences; |
Daniel Dunbar | e588b99 | 2009-03-01 04:46:24 +0000 | [diff] [blame] | 1285 | |
| 1286 | /// EHTypeReferences - uniqued class ehtype references. |
| 1287 | llvm::DenseMap<IdentifierInfo*, llvm::GlobalVariable*> EHTypeReferences; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1288 | |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 1289 | /// VTableDispatchMethods - List of methods for which we generate |
| 1290 | /// vtable-based message dispatch. |
| 1291 | llvm::DenseSet<Selector> VTableDispatchMethods; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1292 | |
Fariborz Jahanian | a03d0dd | 2009-11-17 21:37:35 +0000 | [diff] [blame] | 1293 | /// DefinedMetaClasses - List of defined meta-classes. |
| 1294 | std::vector<llvm::GlobalValue*> DefinedMetaClasses; |
| 1295 | |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 1296 | /// isVTableDispatchedSelector - Returns true if SEL is a |
| 1297 | /// vtable-based selector. |
| 1298 | bool isVTableDispatchedSelector(Selector Sel); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1299 | |
Fariborz Jahanian | aa23b57 | 2009-01-23 23:53:38 +0000 | [diff] [blame] | 1300 | /// FinishNonFragileABIModule - Write out global data structures at the end of |
| 1301 | /// processing a translation unit. |
| 1302 | void FinishNonFragileABIModule(); |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 1303 | |
Daniel Dunbar | 463b876 | 2009-05-15 21:48:48 +0000 | [diff] [blame] | 1304 | /// AddModuleClassList - Add the given list of class pointers to the |
| 1305 | /// module with the provided symbol and section names. |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 1306 | void AddModuleClassList(ArrayRef<llvm::GlobalValue *> Container, |
| 1307 | StringRef SymbolName, StringRef SectionName); |
Daniel Dunbar | 463b876 | 2009-05-15 21:48:48 +0000 | [diff] [blame] | 1308 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1309 | llvm::GlobalVariable * BuildClassRoTInitializer(unsigned flags, |
| 1310 | unsigned InstanceStart, |
| 1311 | unsigned InstanceSize, |
| 1312 | const ObjCImplementationDecl *ID); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 1313 | llvm::GlobalVariable * BuildClassMetaData(const std::string &ClassName, |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1314 | llvm::Constant *IsAGV, |
Fariborz Jahanian | 84394a5 | 2009-01-24 21:21:53 +0000 | [diff] [blame] | 1315 | llvm::Constant *SuperClassGV, |
Fariborz Jahanian | cf55516 | 2009-01-31 00:59:10 +0000 | [diff] [blame] | 1316 | llvm::Constant *ClassRoGV, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1317 | bool HiddenVisibility, |
| 1318 | bool Weak); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1319 | |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 1320 | llvm::Constant *GetMethodConstant(const ObjCMethodDecl *MD); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1321 | |
Fariborz Jahanian | 3819a0b | 2009-01-30 00:46:37 +0000 | [diff] [blame] | 1322 | llvm::Constant *GetMethodDescriptionConstant(const ObjCMethodDecl *MD); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1323 | |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 1324 | /// EmitMethodList - Emit the method list for the given |
| 1325 | /// implementation. The return value has type MethodListnfABITy. |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 1326 | llvm::Constant *EmitMethodList(Twine Name, StringRef Section, |
| 1327 | ArrayRef<llvm::Constant *> Methods); |
Fariborz Jahanian | 98abf4b | 2009-01-27 19:38:51 +0000 | [diff] [blame] | 1328 | /// EmitIvarList - Emit the ivar list for the given |
| 1329 | /// implementation. If ForClass is true the list of class ivars |
| 1330 | /// (i.e. metaclass ivars) is emitted, otherwise the list of |
| 1331 | /// interface ivars will be emitted. The return value has type |
| 1332 | /// IvarListnfABIPtrTy. |
| 1333 | llvm::Constant *EmitIvarList(const ObjCImplementationDecl *ID); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1334 | |
Fariborz Jahanian | ed157d3 | 2009-02-10 20:21:06 +0000 | [diff] [blame] | 1335 | llvm::Constant *EmitIvarOffsetVar(const ObjCInterfaceDecl *ID, |
Fariborz Jahanian | 2fa5a27 | 2009-01-28 01:36:42 +0000 | [diff] [blame] | 1336 | const ObjCIvarDecl *Ivar, |
Eli Friedman | e5b4666 | 2012-11-06 22:15:52 +0000 | [diff] [blame] | 1337 | unsigned long int offset); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1338 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 1339 | /// GetOrEmitProtocol - Get the protocol object for the given |
| 1340 | /// declaration, emitting it if necessary. The return value has type |
| 1341 | /// ProtocolPtrTy. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1342 | llvm::Constant *GetOrEmitProtocol(const ObjCProtocolDecl *PD) override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1343 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 1344 | /// GetOrEmitProtocolRef - Get a forward reference to the protocol |
| 1345 | /// object for the given declaration, emitting it if needed. These |
| 1346 | /// forward references will be filled in with empty bodies if no |
| 1347 | /// definition is seen. The return value has type ProtocolPtrTy. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1348 | llvm::Constant *GetOrEmitProtocolRef(const ObjCProtocolDecl *PD) override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1349 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 1350 | /// EmitProtocolList - Generate the list of referenced |
| 1351 | /// protocols. The return value has type ProtocolListPtrTy. |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 1352 | llvm::Constant *EmitProtocolList(Twine Name, |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 1353 | ObjCProtocolDecl::protocol_iterator begin, |
Fariborz Jahanian | 4655112 | 2009-02-04 00:22:57 +0000 | [diff] [blame] | 1354 | ObjCProtocolDecl::protocol_iterator end); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1355 | |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 1356 | CodeGen::RValue EmitVTableMessageSend(CodeGen::CodeGenFunction &CGF, |
| 1357 | ReturnValueSlot Return, |
| 1358 | QualType ResultType, |
| 1359 | Selector Sel, |
| 1360 | llvm::Value *Receiver, |
| 1361 | QualType Arg0Ty, |
| 1362 | bool IsSuper, |
| 1363 | const CallArgList &CallArgs, |
| 1364 | const ObjCMethodDecl *Method); |
Fariborz Jahanian | 6f40e22 | 2011-05-17 22:21:16 +0000 | [diff] [blame] | 1365 | |
Daniel Dunbar | 5a7379a | 2009-03-01 04:40:10 +0000 | [diff] [blame] | 1366 | /// GetClassGlobal - Return the global variable for the Objective-C |
| 1367 | /// class of the given name. |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 1368 | llvm::GlobalVariable *GetClassGlobal(StringRef Name, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1369 | bool Weak = false) override; |
| 1370 | |
Fariborz Jahanian | 0e81f4b | 2009-02-05 20:41:40 +0000 | [diff] [blame] | 1371 | /// EmitClassRef - Return a Value*, of type ObjCTypes.ClassPtrTy, |
Daniel Dunbar | 1139452 | 2009-04-18 08:51:00 +0000 | [diff] [blame] | 1372 | /// for the given class reference. |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 1373 | llvm::Value *EmitClassRef(CodeGenFunction &CGF, |
Daniel Dunbar | 1139452 | 2009-04-18 08:51:00 +0000 | [diff] [blame] | 1374 | const ObjCInterfaceDecl *ID); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 1375 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 1376 | llvm::Value *EmitClassRefFromId(CodeGenFunction &CGF, |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 1377 | IdentifierInfo *II, bool Weak, |
| 1378 | const ObjCInterfaceDecl *ID); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1379 | |
| 1380 | llvm::Value *EmitNSAutoreleasePoolClassRef(CodeGenFunction &CGF) override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1381 | |
Daniel Dunbar | 1139452 | 2009-04-18 08:51:00 +0000 | [diff] [blame] | 1382 | /// EmitSuperClassRef - Return a Value*, of type ObjCTypes.ClassPtrTy, |
| 1383 | /// for the given super class reference. |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 1384 | llvm::Value *EmitSuperClassRef(CodeGenFunction &CGF, |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1385 | const ObjCInterfaceDecl *ID); |
| 1386 | |
Fariborz Jahanian | 7a06aae | 2009-02-06 20:09:23 +0000 | [diff] [blame] | 1387 | /// EmitMetaClassRef - Return a Value * of the address of _class_t |
| 1388 | /// meta-data |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 1389 | llvm::Value *EmitMetaClassRef(CodeGenFunction &CGF, |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 1390 | const ObjCInterfaceDecl *ID, bool Weak); |
Fariborz Jahanian | 7a06aae | 2009-02-06 20:09:23 +0000 | [diff] [blame] | 1391 | |
Fariborz Jahanian | ed157d3 | 2009-02-10 20:21:06 +0000 | [diff] [blame] | 1392 | /// ObjCIvarOffsetVariable - Returns the ivar offset variable for |
| 1393 | /// the given ivar. |
| 1394 | /// |
Daniel Dunbar | 5e88bea | 2009-04-19 00:31:15 +0000 | [diff] [blame] | 1395 | llvm::GlobalVariable * ObjCIvarOffsetVariable( |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1396 | const ObjCInterfaceDecl *ID, |
| 1397 | const ObjCIvarDecl *Ivar); |
| 1398 | |
Fariborz Jahanian | 26cc89f | 2009-02-11 20:51:17 +0000 | [diff] [blame] | 1399 | /// EmitSelector - Return a Value*, of type ObjCTypes.SelectorPtrTy, |
| 1400 | /// for the given selector. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1401 | llvm::Value *EmitSelector(CodeGenFunction &CGF, Selector Sel); |
| 1402 | Address EmitSelectorAddr(CodeGenFunction &CGF, Selector Sel); |
Daniel Dunbar | e588b99 | 2009-03-01 04:46:24 +0000 | [diff] [blame] | 1403 | |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 1404 | /// GetInterfaceEHType - Get the cached ehtype for the given Objective-C |
Daniel Dunbar | e588b99 | 2009-03-01 04:46:24 +0000 | [diff] [blame] | 1405 | /// interface. The return value has type EHTypePtrTy. |
John McCall | 5a18039 | 2010-07-24 00:37:23 +0000 | [diff] [blame] | 1406 | llvm::Constant *GetInterfaceEHType(const ObjCInterfaceDecl *ID, |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 1407 | bool ForDefinition); |
Daniel Dunbar | 6ab187a | 2009-04-07 05:48:37 +0000 | [diff] [blame] | 1408 | |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 1409 | StringRef getMetaclassSymbolPrefix() const { return "OBJC_METACLASS_$_"; } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1410 | |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 1411 | StringRef getClassSymbolPrefix() const { return "OBJC_CLASS_$_"; } |
Daniel Dunbar | 6ab187a | 2009-04-07 05:48:37 +0000 | [diff] [blame] | 1412 | |
Daniel Dunbar | 9f89f2b | 2009-05-03 12:57:56 +0000 | [diff] [blame] | 1413 | void GetClassSizeInfo(const ObjCImplementationDecl *OID, |
Daniel Dunbar | b02532a | 2009-04-19 23:41:48 +0000 | [diff] [blame] | 1414 | uint32_t &InstanceStart, |
| 1415 | uint32_t &InstanceSize); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1416 | |
Fariborz Jahanian | 4523eb0 | 2009-05-12 20:06:41 +0000 | [diff] [blame] | 1417 | // Shamelessly stolen from Analysis/CFRefCount.cpp |
Daniel Dunbar | 74d4b12 | 2009-05-15 22:33:15 +0000 | [diff] [blame] | 1418 | Selector GetNullarySelector(const char* name) const { |
Fariborz Jahanian | 4523eb0 | 2009-05-12 20:06:41 +0000 | [diff] [blame] | 1419 | IdentifierInfo* II = &CGM.getContext().Idents.get(name); |
| 1420 | return CGM.getContext().Selectors.getSelector(0, &II); |
| 1421 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1422 | |
Daniel Dunbar | 74d4b12 | 2009-05-15 22:33:15 +0000 | [diff] [blame] | 1423 | Selector GetUnarySelector(const char* name) const { |
Fariborz Jahanian | 4523eb0 | 2009-05-12 20:06:41 +0000 | [diff] [blame] | 1424 | IdentifierInfo* II = &CGM.getContext().Idents.get(name); |
| 1425 | return CGM.getContext().Selectors.getSelector(1, &II); |
| 1426 | } |
Daniel Dunbar | b02532a | 2009-04-19 23:41:48 +0000 | [diff] [blame] | 1427 | |
Daniel Dunbar | 74d4b12 | 2009-05-15 22:33:15 +0000 | [diff] [blame] | 1428 | /// ImplementationIsNonLazy - Check whether the given category or |
| 1429 | /// class implementation is "non-lazy". |
Fariborz Jahanian | ecfbdcb | 2009-05-21 01:03:45 +0000 | [diff] [blame] | 1430 | bool ImplementationIsNonLazy(const ObjCImplDecl *OD) const; |
Daniel Dunbar | 74d4b12 | 2009-05-15 22:33:15 +0000 | [diff] [blame] | 1431 | |
Saleem Abdulrasool | 961f570 | 2013-02-17 04:03:34 +0000 | [diff] [blame] | 1432 | bool IsIvarOffsetKnownIdempotent(const CodeGen::CodeGenFunction &CGF, |
Saleem Abdulrasool | 961f570 | 2013-02-17 04:03:34 +0000 | [diff] [blame] | 1433 | const ObjCIvarDecl *IV) { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1434 | // Annotate the load as an invariant load iff inside an instance method |
| 1435 | // and ivar belongs to instance method's class and one of its super class. |
| 1436 | // This check is needed because the ivar offset is a lazily |
Saleem Abdulrasool | 961f570 | 2013-02-17 04:03:34 +0000 | [diff] [blame] | 1437 | // initialised value that may depend on objc_msgSend to perform a fixup on |
| 1438 | // the first message dispatch. |
| 1439 | // |
| 1440 | // An additional opportunity to mark the load as invariant arises when the |
| 1441 | // base of the ivar access is a parameter to an Objective C method. |
| 1442 | // However, because the parameters are not available in the current |
| 1443 | // interface, we cannot perform this check. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1444 | if (const ObjCMethodDecl *MD = |
| 1445 | dyn_cast_or_null<ObjCMethodDecl>(CGF.CurFuncDecl)) |
| 1446 | if (MD->isInstanceMethod()) |
| 1447 | if (const ObjCInterfaceDecl *ID = MD->getClassInterface()) |
| 1448 | return IV->getContainingInterface()->isSuperClassOf(ID); |
Saleem Abdulrasool | 961f570 | 2013-02-17 04:03:34 +0000 | [diff] [blame] | 1449 | return false; |
| 1450 | } |
| 1451 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 1452 | public: |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 1453 | CGObjCNonFragileABIMac(CodeGen::CodeGenModule &cgm); |
Fariborz Jahanian | aa23b57 | 2009-01-23 23:53:38 +0000 | [diff] [blame] | 1454 | // FIXME. All stubs for now! |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1455 | llvm::Function *ModuleInitFunction() override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1456 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1457 | CodeGen::RValue GenerateMessageSend(CodeGen::CodeGenFunction &CGF, |
| 1458 | ReturnValueSlot Return, |
| 1459 | QualType ResultType, Selector Sel, |
| 1460 | llvm::Value *Receiver, |
| 1461 | const CallArgList &CallArgs, |
| 1462 | const ObjCInterfaceDecl *Class, |
| 1463 | const ObjCMethodDecl *Method) override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1464 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1465 | CodeGen::RValue |
Fariborz Jahanian | aa23b57 | 2009-01-23 23:53:38 +0000 | [diff] [blame] | 1466 | GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1467 | ReturnValueSlot Return, QualType ResultType, |
| 1468 | Selector Sel, const ObjCInterfaceDecl *Class, |
| 1469 | bool isCategoryImpl, llvm::Value *Receiver, |
| 1470 | bool IsClassMessage, const CallArgList &CallArgs, |
| 1471 | const ObjCMethodDecl *Method) override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1472 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1473 | llvm::Value *GetClass(CodeGenFunction &CGF, |
| 1474 | const ObjCInterfaceDecl *ID) override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1475 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1476 | llvm::Value *GetSelector(CodeGenFunction &CGF, Selector Sel) override |
| 1477 | { return EmitSelector(CGF, Sel); } |
| 1478 | Address GetAddrOfSelector(CodeGenFunction &CGF, Selector Sel) override |
| 1479 | { return EmitSelectorAddr(CGF, Sel); } |
Fariborz Jahanian | df9ccc6 | 2009-05-05 21:36:57 +0000 | [diff] [blame] | 1480 | |
| 1481 | /// The NeXT/Apple runtimes do not support typed selectors; just emit an |
| 1482 | /// untyped one. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1483 | llvm::Value *GetSelector(CodeGenFunction &CGF, |
| 1484 | const ObjCMethodDecl *Method) override |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 1485 | { return EmitSelector(CGF, Method->getSelector()); } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1486 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1487 | void GenerateCategory(const ObjCCategoryImplDecl *CMD) override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1488 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1489 | void GenerateClass(const ObjCImplementationDecl *ClassDecl) override; |
David Chisnall | 29254f4 | 2012-01-31 18:59:20 +0000 | [diff] [blame] | 1490 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1491 | void RegisterAlias(const ObjCCompatibleAliasDecl *OAD) override {} |
David Chisnall | 29254f4 | 2012-01-31 18:59:20 +0000 | [diff] [blame] | 1492 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1493 | llvm::Value *GenerateProtocolRef(CodeGenFunction &CGF, |
| 1494 | const ObjCProtocolDecl *PD) override; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1495 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1496 | llvm::Constant *GetEHType(QualType T) override; |
John McCall | 5a18039 | 2010-07-24 00:37:23 +0000 | [diff] [blame] | 1497 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1498 | llvm::Constant *GetPropertyGetFunction() override { |
Chris Lattner | 72db6c3 | 2009-04-22 02:44:54 +0000 | [diff] [blame] | 1499 | return ObjCTypes.getGetPropertyFn(); |
Fariborz Jahanian | f63aa3f | 2009-02-10 19:02:04 +0000 | [diff] [blame] | 1500 | } |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1501 | llvm::Constant *GetPropertySetFunction() override { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1502 | return ObjCTypes.getSetPropertyFn(); |
Fariborz Jahanian | f63aa3f | 2009-02-10 19:02:04 +0000 | [diff] [blame] | 1503 | } |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1504 | |
| 1505 | llvm::Constant *GetOptimizedPropertySetFunction(bool atomic, |
| 1506 | bool copy) override { |
Ted Kremenek | ebcb57a | 2012-03-06 20:05:56 +0000 | [diff] [blame] | 1507 | return ObjCTypes.getOptimizedSetPropertyFn(atomic, copy); |
| 1508 | } |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1509 | |
| 1510 | llvm::Constant *GetSetStructFunction() override { |
David Chisnall | 8fac25d | 2010-12-26 22:13:16 +0000 | [diff] [blame] | 1511 | return ObjCTypes.getCopyStructFn(); |
| 1512 | } |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 1513 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1514 | llvm::Constant *GetGetStructFunction() override { |
Fariborz Jahanian | 6cc5906 | 2010-04-12 18:18:10 +0000 | [diff] [blame] | 1515 | return ObjCTypes.getCopyStructFn(); |
| 1516 | } |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 1517 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1518 | llvm::Constant *GetCppAtomicObjectSetFunction() override { |
David Chisnall | d397cfe | 2012-12-17 18:54:24 +0000 | [diff] [blame] | 1519 | return ObjCTypes.getCppAtomicObjectFunction(); |
| 1520 | } |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 1521 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1522 | llvm::Constant *GetCppAtomicObjectGetFunction() override { |
Fariborz Jahanian | e317302 | 2012-01-06 18:07:23 +0000 | [diff] [blame] | 1523 | return ObjCTypes.getCppAtomicObjectFunction(); |
| 1524 | } |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1525 | |
| 1526 | llvm::Constant *EnumerationMutationFunction() override { |
Chris Lattner | 72db6c3 | 2009-04-22 02:44:54 +0000 | [diff] [blame] | 1527 | return ObjCTypes.getEnumerationMutationFn(); |
Daniel Dunbar | 28ed084 | 2009-02-16 18:48:45 +0000 | [diff] [blame] | 1528 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1529 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1530 | void EmitTryStmt(CodeGen::CodeGenFunction &CGF, |
| 1531 | const ObjCAtTryStmt &S) override; |
| 1532 | void EmitSynchronizedStmt(CodeGen::CodeGenFunction &CGF, |
| 1533 | const ObjCAtSynchronizedStmt &S) override; |
| 1534 | void EmitThrowStmt(CodeGen::CodeGenFunction &CGF, const ObjCAtThrowStmt &S, |
| 1535 | bool ClearInsertionPoint=true) override; |
| 1536 | llvm::Value * EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1537 | Address AddrWeakObj) override; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1538 | void EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1539 | llvm::Value *src, Address edst) override; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1540 | void EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1541 | llvm::Value *src, Address dest, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1542 | bool threadlocal = false) override; |
| 1543 | void EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1544 | llvm::Value *src, Address dest, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1545 | llvm::Value *ivarOffset) override; |
| 1546 | void EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1547 | llvm::Value *src, Address dest) override; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1548 | void EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1549 | Address dest, Address src, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1550 | llvm::Value *size) override; |
| 1551 | LValue EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, QualType ObjectTy, |
| 1552 | llvm::Value *BaseValue, const ObjCIvarDecl *Ivar, |
| 1553 | unsigned CVRQualifiers) override; |
| 1554 | llvm::Value *EmitIvarOffset(CodeGen::CodeGenFunction &CGF, |
| 1555 | const ObjCInterfaceDecl *Interface, |
| 1556 | const ObjCIvarDecl *Ivar) override; |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 1557 | }; |
Fariborz Jahanian | 4e1524b | 2012-01-29 20:27:13 +0000 | [diff] [blame] | 1558 | |
| 1559 | /// A helper class for performing the null-initialization of a return |
| 1560 | /// value. |
| 1561 | struct NullReturnState { |
| 1562 | llvm::BasicBlock *NullBB; |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 1563 | NullReturnState() : NullBB(nullptr) {} |
Fariborz Jahanian | 4e1524b | 2012-01-29 20:27:13 +0000 | [diff] [blame] | 1564 | |
John McCall | 0609858 | 2013-02-12 05:53:35 +0000 | [diff] [blame] | 1565 | /// Perform a null-check of the given receiver. |
Fariborz Jahanian | 4e1524b | 2012-01-29 20:27:13 +0000 | [diff] [blame] | 1566 | void init(CodeGenFunction &CGF, llvm::Value *receiver) { |
John McCall | 0609858 | 2013-02-12 05:53:35 +0000 | [diff] [blame] | 1567 | // Make blocks for the null-receiver and call edges. |
| 1568 | NullBB = CGF.createBasicBlock("msgSend.null-receiver"); |
| 1569 | llvm::BasicBlock *callBB = CGF.createBasicBlock("msgSend.call"); |
Fariborz Jahanian | 4e1524b | 2012-01-29 20:27:13 +0000 | [diff] [blame] | 1570 | |
| 1571 | // Check for a null receiver and, if there is one, jump to the |
John McCall | 0609858 | 2013-02-12 05:53:35 +0000 | [diff] [blame] | 1572 | // null-receiver block. There's no point in trying to avoid it: |
| 1573 | // we're always going to put *something* there, because otherwise |
| 1574 | // we shouldn't have done this null-check in the first place. |
Fariborz Jahanian | 4e1524b | 2012-01-29 20:27:13 +0000 | [diff] [blame] | 1575 | llvm::Value *isNull = CGF.Builder.CreateIsNull(receiver); |
| 1576 | CGF.Builder.CreateCondBr(isNull, NullBB, callBB); |
| 1577 | |
| 1578 | // Otherwise, start performing the call. |
| 1579 | CGF.EmitBlock(callBB); |
| 1580 | } |
| 1581 | |
John McCall | 0609858 | 2013-02-12 05:53:35 +0000 | [diff] [blame] | 1582 | /// Complete the null-return operation. It is valid to call this |
| 1583 | /// regardless of whether 'init' has been called. |
Fariborz Jahanian | 3c267e6 | 2012-01-30 21:40:37 +0000 | [diff] [blame] | 1584 | RValue complete(CodeGenFunction &CGF, RValue result, QualType resultType, |
| 1585 | const CallArgList &CallArgs, |
| 1586 | const ObjCMethodDecl *Method) { |
John McCall | 0609858 | 2013-02-12 05:53:35 +0000 | [diff] [blame] | 1587 | // If we never had to do a null-check, just use the raw result. |
Fariborz Jahanian | 4e1524b | 2012-01-29 20:27:13 +0000 | [diff] [blame] | 1588 | if (!NullBB) return result; |
John McCall | 0609858 | 2013-02-12 05:53:35 +0000 | [diff] [blame] | 1589 | |
| 1590 | // The continuation block. This will be left null if we don't have an |
| 1591 | // IP, which can happen if the method we're calling is marked noreturn. |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 1592 | llvm::BasicBlock *contBB = nullptr; |
| 1593 | |
John McCall | 0609858 | 2013-02-12 05:53:35 +0000 | [diff] [blame] | 1594 | // Finish the call path. |
| 1595 | llvm::BasicBlock *callBB = CGF.Builder.GetInsertBlock(); |
| 1596 | if (callBB) { |
| 1597 | contBB = CGF.createBasicBlock("msgSend.cont"); |
| 1598 | CGF.Builder.CreateBr(contBB); |
Fariborz Jahanian | 3c267e6 | 2012-01-30 21:40:37 +0000 | [diff] [blame] | 1599 | } |
Fariborz Jahanian | 4e1524b | 2012-01-29 20:27:13 +0000 | [diff] [blame] | 1600 | |
John McCall | 0609858 | 2013-02-12 05:53:35 +0000 | [diff] [blame] | 1601 | // Okay, start emitting the null-receiver block. |
Fariborz Jahanian | 4e1524b | 2012-01-29 20:27:13 +0000 | [diff] [blame] | 1602 | CGF.EmitBlock(NullBB); |
Fariborz Jahanian | 3c267e6 | 2012-01-30 21:40:37 +0000 | [diff] [blame] | 1603 | |
John McCall | 0609858 | 2013-02-12 05:53:35 +0000 | [diff] [blame] | 1604 | // Release any consumed arguments we've got. |
Fariborz Jahanian | 3c267e6 | 2012-01-30 21:40:37 +0000 | [diff] [blame] | 1605 | if (Method) { |
| 1606 | CallArgList::const_iterator I = CallArgs.begin(); |
| 1607 | for (ObjCMethodDecl::param_const_iterator i = Method->param_begin(), |
| 1608 | e = Method->param_end(); i != e; ++i, ++I) { |
| 1609 | const ParmVarDecl *ParamDecl = (*i); |
| 1610 | if (ParamDecl->hasAttr<NSConsumedAttr>()) { |
| 1611 | RValue RV = I->RV; |
| 1612 | assert(RV.isScalar() && |
| 1613 | "NullReturnState::complete - arg not on object"); |
John McCall | 5b07e80 | 2013-03-13 03:10:54 +0000 | [diff] [blame] | 1614 | CGF.EmitARCRelease(RV.getScalarVal(), ARCImpreciseLifetime); |
Fariborz Jahanian | 3c267e6 | 2012-01-30 21:40:37 +0000 | [diff] [blame] | 1615 | } |
| 1616 | } |
| 1617 | } |
John McCall | 0609858 | 2013-02-12 05:53:35 +0000 | [diff] [blame] | 1618 | |
| 1619 | // The phi code below assumes that we haven't needed any control flow yet. |
| 1620 | assert(CGF.Builder.GetInsertBlock() == NullBB); |
| 1621 | |
| 1622 | // If we've got a void return, just jump to the continuation block. |
| 1623 | if (result.isScalar() && resultType->isVoidType()) { |
| 1624 | // No jumps required if the message-send was noreturn. |
| 1625 | if (contBB) CGF.EmitBlock(contBB); |
Fariborz Jahanian | 4e1524b | 2012-01-29 20:27:13 +0000 | [diff] [blame] | 1626 | return result; |
| 1627 | } |
| 1628 | |
John McCall | 0609858 | 2013-02-12 05:53:35 +0000 | [diff] [blame] | 1629 | // If we've got a scalar return, build a phi. |
| 1630 | if (result.isScalar()) { |
| 1631 | // Derive the null-initialization value. |
| 1632 | llvm::Constant *null = CGF.CGM.EmitNullConstant(resultType); |
| 1633 | |
| 1634 | // If no join is necessary, just flow out. |
| 1635 | if (!contBB) return RValue::get(null); |
| 1636 | |
| 1637 | // Otherwise, build a phi. |
| 1638 | CGF.EmitBlock(contBB); |
| 1639 | llvm::PHINode *phi = CGF.Builder.CreatePHI(null->getType(), 2); |
| 1640 | phi->addIncoming(result.getScalarVal(), callBB); |
| 1641 | phi->addIncoming(null, NullBB); |
| 1642 | return RValue::get(phi); |
| 1643 | } |
| 1644 | |
| 1645 | // If we've got an aggregate return, null the buffer out. |
| 1646 | // FIXME: maybe we should be doing things differently for all the |
| 1647 | // cases where the ABI has us returning (1) non-agg values in |
| 1648 | // memory or (2) agg values in registers. |
| 1649 | if (result.isAggregate()) { |
| 1650 | assert(result.isAggregate() && "null init of non-aggregate result?"); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1651 | CGF.EmitNullInitialization(result.getAggregateAddress(), resultType); |
John McCall | 0609858 | 2013-02-12 05:53:35 +0000 | [diff] [blame] | 1652 | if (contBB) CGF.EmitBlock(contBB); |
| 1653 | return result; |
| 1654 | } |
| 1655 | |
| 1656 | // Complex types. |
Fariborz Jahanian | 4e1524b | 2012-01-29 20:27:13 +0000 | [diff] [blame] | 1657 | CGF.EmitBlock(contBB); |
John McCall | 0609858 | 2013-02-12 05:53:35 +0000 | [diff] [blame] | 1658 | CodeGenFunction::ComplexPairTy callResult = result.getComplexVal(); |
| 1659 | |
| 1660 | // Find the scalar type and its zero value. |
| 1661 | llvm::Type *scalarTy = callResult.first->getType(); |
| 1662 | llvm::Constant *scalarZero = llvm::Constant::getNullValue(scalarTy); |
| 1663 | |
| 1664 | // Build phis for both coordinates. |
| 1665 | llvm::PHINode *real = CGF.Builder.CreatePHI(scalarTy, 2); |
| 1666 | real->addIncoming(callResult.first, callBB); |
| 1667 | real->addIncoming(scalarZero, NullBB); |
| 1668 | llvm::PHINode *imag = CGF.Builder.CreatePHI(scalarTy, 2); |
| 1669 | imag->addIncoming(callResult.second, callBB); |
| 1670 | imag->addIncoming(scalarZero, NullBB); |
| 1671 | return RValue::getComplex(real, imag); |
Fariborz Jahanian | 4e1524b | 2012-01-29 20:27:13 +0000 | [diff] [blame] | 1672 | } |
| 1673 | }; |
| 1674 | |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1675 | } // end anonymous namespace |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 1676 | |
| 1677 | /* *** Helper Functions *** */ |
| 1678 | |
| 1679 | /// getConstantGEP() - Help routine to construct simple GEPs. |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 1680 | static llvm::Constant *getConstantGEP(llvm::LLVMContext &VMContext, |
Pirama Arumuga Nainar | 58878f8 | 2015-05-06 11:48:57 -0700 | [diff] [blame] | 1681 | llvm::GlobalVariable *C, unsigned idx0, |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 1682 | unsigned idx1) { |
| 1683 | llvm::Value *Idxs[] = { |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 1684 | llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), idx0), |
| 1685 | llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), idx1) |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 1686 | }; |
Pirama Arumuga Nainar | 58878f8 | 2015-05-06 11:48:57 -0700 | [diff] [blame] | 1687 | return llvm::ConstantExpr::getGetElementPtr(C->getValueType(), C, Idxs); |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 1688 | } |
| 1689 | |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 1690 | /// hasObjCExceptionAttribute - Return true if this class or any super |
| 1691 | /// class has the __objc_exception__ attribute. |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1692 | static bool hasObjCExceptionAttribute(ASTContext &Context, |
Douglas Gregor | 68584ed | 2009-06-18 16:11:24 +0000 | [diff] [blame] | 1693 | const ObjCInterfaceDecl *OID) { |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1694 | if (OID->hasAttr<ObjCExceptionAttr>()) |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 1695 | return true; |
| 1696 | if (const ObjCInterfaceDecl *Super = OID->getSuperClass()) |
Douglas Gregor | 68584ed | 2009-06-18 16:11:24 +0000 | [diff] [blame] | 1697 | return hasObjCExceptionAttribute(Context, Super); |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 1698 | return false; |
| 1699 | } |
| 1700 | |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 1701 | /* *** CGObjCMac Public Interface *** */ |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1702 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 1703 | CGObjCMac::CGObjCMac(CodeGen::CodeGenModule &cgm) : CGObjCCommonMac(cgm), |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1704 | ObjCTypes(cgm) { |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 1705 | ObjCABI = 1; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1706 | EmitImageInfo(); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1707 | } |
| 1708 | |
Daniel Dunbar | ddb2a3d | 2008-08-16 00:25:02 +0000 | [diff] [blame] | 1709 | /// GetClass - Return a reference to the class for the given interface |
| 1710 | /// decl. |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 1711 | llvm::Value *CGObjCMac::GetClass(CodeGenFunction &CGF, |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 1712 | const ObjCInterfaceDecl *ID) { |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 1713 | return EmitClassRef(CGF, ID); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1714 | } |
| 1715 | |
| 1716 | /// GetSelector - Return the pointer to the unique'd string for this selector. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1717 | llvm::Value *CGObjCMac::GetSelector(CodeGenFunction &CGF, Selector Sel) { |
| 1718 | return EmitSelector(CGF, Sel); |
| 1719 | } |
| 1720 | Address CGObjCMac::GetAddrOfSelector(CodeGenFunction &CGF, Selector Sel) { |
| 1721 | return EmitSelectorAddr(CGF, Sel); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1722 | } |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 1723 | llvm::Value *CGObjCMac::GetSelector(CodeGenFunction &CGF, const ObjCMethodDecl |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1724 | *Method) { |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 1725 | return EmitSelector(CGF, Method->getSelector()); |
Fariborz Jahanian | df9ccc6 | 2009-05-05 21:36:57 +0000 | [diff] [blame] | 1726 | } |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1727 | |
Fariborz Jahanian | cf5abc7 | 2011-06-23 19:00:08 +0000 | [diff] [blame] | 1728 | llvm::Constant *CGObjCMac::GetEHType(QualType T) { |
Fariborz Jahanian | 9d96bce | 2011-06-22 20:21:51 +0000 | [diff] [blame] | 1729 | if (T->isObjCIdType() || |
| 1730 | T->isObjCQualifiedIdType()) { |
| 1731 | return CGM.GetAddrOfRTTIDescriptor( |
Douglas Gregor | 01a4cf1 | 2011-08-11 20:58:55 +0000 | [diff] [blame] | 1732 | CGM.getContext().getObjCIdRedefinitionType(), /*ForEH=*/true); |
Fariborz Jahanian | 9d96bce | 2011-06-22 20:21:51 +0000 | [diff] [blame] | 1733 | } |
Fariborz Jahanian | cf5abc7 | 2011-06-23 19:00:08 +0000 | [diff] [blame] | 1734 | if (T->isObjCClassType() || |
| 1735 | T->isObjCQualifiedClassType()) { |
| 1736 | return CGM.GetAddrOfRTTIDescriptor( |
Douglas Gregor | 01a4cf1 | 2011-08-11 20:58:55 +0000 | [diff] [blame] | 1737 | CGM.getContext().getObjCClassRedefinitionType(), /*ForEH=*/true); |
Fariborz Jahanian | cf5abc7 | 2011-06-23 19:00:08 +0000 | [diff] [blame] | 1738 | } |
| 1739 | if (T->isObjCObjectPointerType()) |
| 1740 | return CGM.GetAddrOfRTTIDescriptor(T, /*ForEH=*/true); |
| 1741 | |
John McCall | 5a18039 | 2010-07-24 00:37:23 +0000 | [diff] [blame] | 1742 | llvm_unreachable("asking for catch type for ObjC type in fragile runtime"); |
John McCall | 5a18039 | 2010-07-24 00:37:23 +0000 | [diff] [blame] | 1743 | } |
| 1744 | |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 1745 | /// Generate a constant CFString object. |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1746 | /* |
| 1747 | struct __builtin_CFString { |
| 1748 | const int *isa; // point to __CFConstantStringClassReference |
| 1749 | int flags; |
| 1750 | const char *str; |
| 1751 | long length; |
| 1752 | }; |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 1753 | */ |
| 1754 | |
Fariborz Jahanian | 33e982b | 2010-04-22 20:26:39 +0000 | [diff] [blame] | 1755 | /// or Generate a constant NSString object. |
| 1756 | /* |
| 1757 | struct __builtin_NSString { |
| 1758 | const int *isa; // point to __NSConstantStringClassReference |
| 1759 | const char *str; |
| 1760 | unsigned int length; |
| 1761 | }; |
| 1762 | */ |
| 1763 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1764 | ConstantAddress CGObjCCommonMac::GenerateConstantString( |
David Chisnall | 0d13f6f | 2010-01-23 02:40:42 +0000 | [diff] [blame] | 1765 | const StringLiteral *SL) { |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 1766 | return (CGM.getLangOpts().NoConstantCFStrings == 0 ? |
Fariborz Jahanian | 33e982b | 2010-04-22 20:26:39 +0000 | [diff] [blame] | 1767 | CGM.GetAddrOfConstantCFString(SL) : |
Fariborz Jahanian | 4c73307 | 2010-10-19 17:19:29 +0000 | [diff] [blame] | 1768 | CGM.GetAddrOfConstantString(SL)); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1769 | } |
| 1770 | |
Ted Kremenek | ebcb57a | 2012-03-06 20:05:56 +0000 | [diff] [blame] | 1771 | enum { |
| 1772 | kCFTaggedObjectID_Integer = (1 << 1) + 1 |
| 1773 | }; |
| 1774 | |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1775 | /// Generates a message send where the super is the receiver. This is |
| 1776 | /// a message send to self with special delivery semantics indicating |
| 1777 | /// which class's method should be called. |
Daniel Dunbar | 8f2926b | 2008-08-23 03:46:30 +0000 | [diff] [blame] | 1778 | CodeGen::RValue |
| 1779 | CGObjCMac::GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, |
John McCall | ef072fd | 2010-05-22 01:48:05 +0000 | [diff] [blame] | 1780 | ReturnValueSlot Return, |
Daniel Dunbar | 7f8ea5c | 2008-08-30 05:35:15 +0000 | [diff] [blame] | 1781 | QualType ResultType, |
| 1782 | Selector Sel, |
Daniel Dunbar | f56f191 | 2008-08-25 08:19:24 +0000 | [diff] [blame] | 1783 | const ObjCInterfaceDecl *Class, |
Fariborz Jahanian | 7ce7792 | 2009-02-28 20:07:56 +0000 | [diff] [blame] | 1784 | bool isCategoryImpl, |
Daniel Dunbar | f56f191 | 2008-08-25 08:19:24 +0000 | [diff] [blame] | 1785 | llvm::Value *Receiver, |
Daniel Dunbar | 19cd87e | 2008-08-30 03:02:31 +0000 | [diff] [blame] | 1786 | bool IsClassMessage, |
Daniel Dunbar | d6c93d7 | 2009-09-17 04:01:22 +0000 | [diff] [blame] | 1787 | const CodeGen::CallArgList &CallArgs, |
| 1788 | const ObjCMethodDecl *Method) { |
Daniel Dunbar | e8b470d | 2008-08-23 04:28:29 +0000 | [diff] [blame] | 1789 | // Create and init a super structure; this is a (receiver, class) |
| 1790 | // pair we will pass to objc_msgSendSuper. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1791 | Address ObjCSuper = |
| 1792 | CGF.CreateTempAlloca(ObjCTypes.SuperTy, CGF.getPointerAlign(), |
| 1793 | "objc_super"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1794 | llvm::Value *ReceiverAsObject = |
Daniel Dunbar | e8b470d | 2008-08-23 04:28:29 +0000 | [diff] [blame] | 1795 | CGF.Builder.CreateBitCast(Receiver, ObjCTypes.ObjectPtrTy); |
Pirama Arumuga Nainar | 58878f8 | 2015-05-06 11:48:57 -0700 | [diff] [blame] | 1796 | CGF.Builder.CreateStore( |
| 1797 | ReceiverAsObject, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1798 | CGF.Builder.CreateStructGEP(ObjCSuper, 0, CharUnits::Zero())); |
Daniel Dunbar | e8b470d | 2008-08-23 04:28:29 +0000 | [diff] [blame] | 1799 | |
Daniel Dunbar | f56f191 | 2008-08-25 08:19:24 +0000 | [diff] [blame] | 1800 | // If this is a class message the metaclass is passed as the target. |
| 1801 | llvm::Value *Target; |
| 1802 | if (IsClassMessage) { |
Fariborz Jahanian | 7ce7792 | 2009-02-28 20:07:56 +0000 | [diff] [blame] | 1803 | if (isCategoryImpl) { |
| 1804 | // Message sent to 'super' in a class method defined in a category |
| 1805 | // implementation requires an odd treatment. |
| 1806 | // If we are in a class method, we must retrieve the |
| 1807 | // _metaclass_ for the current class, pointed at by |
| 1808 | // the class's "isa" pointer. The following assumes that |
| 1809 | // isa" is the first ivar in a class (which it must be). |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 1810 | Target = EmitClassRef(CGF, Class->getSuperClass()); |
Pirama Arumuga Nainar | 58878f8 | 2015-05-06 11:48:57 -0700 | [diff] [blame] | 1811 | Target = CGF.Builder.CreateStructGEP(ObjCTypes.ClassTy, Target, 0); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1812 | Target = CGF.Builder.CreateAlignedLoad(Target, CGF.getPointerAlign()); |
Mike Stump | b3589f4 | 2009-07-30 22:28:39 +0000 | [diff] [blame] | 1813 | } else { |
Pirama Arumuga Nainar | 58878f8 | 2015-05-06 11:48:57 -0700 | [diff] [blame] | 1814 | llvm::Constant *MetaClassPtr = EmitMetaClassRef(Class); |
| 1815 | llvm::Value *SuperPtr = |
| 1816 | CGF.Builder.CreateStructGEP(ObjCTypes.ClassTy, MetaClassPtr, 1); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1817 | llvm::Value *Super = |
| 1818 | CGF.Builder.CreateAlignedLoad(SuperPtr, CGF.getPointerAlign()); |
Fariborz Jahanian | 7ce7792 | 2009-02-28 20:07:56 +0000 | [diff] [blame] | 1819 | Target = Super; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1820 | } |
Pirama Arumuga Nainar | 58878f8 | 2015-05-06 11:48:57 -0700 | [diff] [blame] | 1821 | } else if (isCategoryImpl) |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 1822 | Target = EmitClassRef(CGF, Class->getSuperClass()); |
Fariborz Jahanian | 182f268 | 2009-11-14 02:18:31 +0000 | [diff] [blame] | 1823 | else { |
Fariborz Jahanian | b0069ee | 2009-11-12 20:14:24 +0000 | [diff] [blame] | 1824 | llvm::Value *ClassPtr = EmitSuperClassRef(Class); |
Pirama Arumuga Nainar | 58878f8 | 2015-05-06 11:48:57 -0700 | [diff] [blame] | 1825 | ClassPtr = CGF.Builder.CreateStructGEP(ObjCTypes.ClassTy, ClassPtr, 1); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1826 | Target = CGF.Builder.CreateAlignedLoad(ClassPtr, CGF.getPointerAlign()); |
Daniel Dunbar | f56f191 | 2008-08-25 08:19:24 +0000 | [diff] [blame] | 1827 | } |
Mike Stump | f5408fe | 2009-05-16 07:57:57 +0000 | [diff] [blame] | 1828 | // FIXME: We shouldn't need to do this cast, rectify the ASTContext and |
| 1829 | // ObjCTypes types. |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 1830 | llvm::Type *ClassTy = |
Daniel Dunbar | 19cd87e | 2008-08-30 03:02:31 +0000 | [diff] [blame] | 1831 | CGM.getTypes().ConvertType(CGF.getContext().getObjCClassType()); |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 1832 | Target = CGF.Builder.CreateBitCast(Target, ClassTy); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1833 | CGF.Builder.CreateStore(Target, |
| 1834 | CGF.Builder.CreateStructGEP(ObjCSuper, 1, CGF.getPointerSize())); |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 1835 | return EmitMessageSend(CGF, Return, ResultType, |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 1836 | EmitSelector(CGF, Sel), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1837 | ObjCSuper.getPointer(), ObjCTypes.SuperPtrCTy, |
| 1838 | true, CallArgs, Method, Class, ObjCTypes); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1839 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1840 | |
| 1841 | /// Generate code for a message send expression. |
Daniel Dunbar | 8f2926b | 2008-08-23 03:46:30 +0000 | [diff] [blame] | 1842 | CodeGen::RValue CGObjCMac::GenerateMessageSend(CodeGen::CodeGenFunction &CGF, |
John McCall | ef072fd | 2010-05-22 01:48:05 +0000 | [diff] [blame] | 1843 | ReturnValueSlot Return, |
Daniel Dunbar | 7f8ea5c | 2008-08-30 05:35:15 +0000 | [diff] [blame] | 1844 | QualType ResultType, |
| 1845 | Selector Sel, |
Daniel Dunbar | f56f191 | 2008-08-25 08:19:24 +0000 | [diff] [blame] | 1846 | llvm::Value *Receiver, |
Fariborz Jahanian | df9ccc6 | 2009-05-05 21:36:57 +0000 | [diff] [blame] | 1847 | const CallArgList &CallArgs, |
David Chisnall | c6cd5fd | 2010-04-28 19:33:36 +0000 | [diff] [blame] | 1848 | const ObjCInterfaceDecl *Class, |
Fariborz Jahanian | df9ccc6 | 2009-05-05 21:36:57 +0000 | [diff] [blame] | 1849 | const ObjCMethodDecl *Method) { |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 1850 | return EmitMessageSend(CGF, Return, ResultType, |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 1851 | EmitSelector(CGF, Sel), |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 1852 | Receiver, CGF.getContext().getObjCIdType(), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1853 | false, CallArgs, Method, Class, ObjCTypes); |
| 1854 | } |
| 1855 | |
| 1856 | static bool isWeakLinkedClass(const ObjCInterfaceDecl *ID) { |
| 1857 | do { |
| 1858 | if (ID->isWeakImported()) |
| 1859 | return true; |
| 1860 | } while ((ID = ID->getSuperClass())); |
| 1861 | |
| 1862 | return false; |
Daniel Dunbar | 14c80b7 | 2008-08-23 09:25:55 +0000 | [diff] [blame] | 1863 | } |
| 1864 | |
Daniel Dunbar | d6c93d7 | 2009-09-17 04:01:22 +0000 | [diff] [blame] | 1865 | CodeGen::RValue |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 1866 | CGObjCCommonMac::EmitMessageSend(CodeGen::CodeGenFunction &CGF, |
| 1867 | ReturnValueSlot Return, |
| 1868 | QualType ResultType, |
| 1869 | llvm::Value *Sel, |
| 1870 | llvm::Value *Arg0, |
| 1871 | QualType Arg0Ty, |
| 1872 | bool IsSuper, |
| 1873 | const CallArgList &CallArgs, |
| 1874 | const ObjCMethodDecl *Method, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1875 | const ObjCInterfaceDecl *ClassReceiver, |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 1876 | const ObjCCommonTypesHelper &ObjCTypes) { |
Daniel Dunbar | 19cd87e | 2008-08-30 03:02:31 +0000 | [diff] [blame] | 1877 | CallArgList ActualArgs; |
Fariborz Jahanian | d019d96 | 2009-04-24 21:07:43 +0000 | [diff] [blame] | 1878 | if (!IsSuper) |
Benjamin Kramer | 578faa8 | 2011-09-27 21:06:10 +0000 | [diff] [blame] | 1879 | Arg0 = CGF.Builder.CreateBitCast(Arg0, ObjCTypes.ObjectPtrTy); |
Eli Friedman | 04c9a49 | 2011-05-02 17:57:46 +0000 | [diff] [blame] | 1880 | ActualArgs.add(RValue::get(Arg0), Arg0Ty); |
| 1881 | ActualArgs.add(RValue::get(Sel), CGF.getContext().getObjCSelType()); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 1882 | ActualArgs.addFrom(CallArgs); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1883 | |
John McCall | de5d3c7 | 2012-02-17 03:33:10 +0000 | [diff] [blame] | 1884 | // If we're calling a method, use the formal signature. |
| 1885 | MessageSendInfo MSI = getMessageSendInfo(Method, ResultType, ActualArgs); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1886 | |
Anders Carlsson | 7e70fb2 | 2010-06-21 20:59:55 +0000 | [diff] [blame] | 1887 | if (Method) |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1888 | assert(CGM.getContext().getCanonicalType(Method->getReturnType()) == |
| 1889 | CGM.getContext().getCanonicalType(ResultType) && |
Anders Carlsson | 7e70fb2 | 2010-06-21 20:59:55 +0000 | [diff] [blame] | 1890 | "Result type mismatch!"); |
| 1891 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1892 | bool ReceiverCanBeNull = true; |
| 1893 | |
| 1894 | // Super dispatch assumes that self is non-null; even the messenger |
| 1895 | // doesn't have a null check internally. |
| 1896 | if (IsSuper) { |
| 1897 | ReceiverCanBeNull = false; |
| 1898 | |
| 1899 | // If this is a direct dispatch of a class method, check whether the class, |
| 1900 | // or anything in its hierarchy, was weak-linked. |
| 1901 | } else if (ClassReceiver && Method && Method->isClassMethod()) { |
| 1902 | ReceiverCanBeNull = isWeakLinkedClass(ClassReceiver); |
| 1903 | |
| 1904 | // If we're emitting a method, and self is const (meaning just ARC, for now), |
| 1905 | // and the receiver is a load of self, then self is a valid object. |
| 1906 | } else if (auto CurMethod = |
| 1907 | dyn_cast_or_null<ObjCMethodDecl>(CGF.CurCodeDecl)) { |
| 1908 | auto Self = CurMethod->getSelfDecl(); |
| 1909 | if (Self->getType().isConstQualified()) { |
| 1910 | if (auto LI = dyn_cast<llvm::LoadInst>(Arg0->stripPointerCasts())) { |
| 1911 | llvm::Value *SelfAddr = CGF.GetAddrOfLocalVar(Self).getPointer(); |
| 1912 | if (SelfAddr == LI->getPointerOperand()) { |
| 1913 | ReceiverCanBeNull = false; |
| 1914 | } |
| 1915 | } |
| 1916 | } |
| 1917 | } |
| 1918 | |
John McCall | cba681a | 2011-05-14 21:12:11 +0000 | [diff] [blame] | 1919 | NullReturnState nullReturn; |
| 1920 | |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 1921 | llvm::Constant *Fn = nullptr; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1922 | if (CGM.ReturnSlotInterferesWithArgs(MSI.CallInfo)) { |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1923 | if (ReceiverCanBeNull) nullReturn.init(CGF, Arg0); |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 1924 | Fn = (ObjCABI == 2) ? ObjCTypes.getSendStretFn2(IsSuper) |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1925 | : ObjCTypes.getSendStretFn(IsSuper); |
Daniel Dunbar | dacf9dd | 2010-07-14 23:39:36 +0000 | [diff] [blame] | 1926 | } else if (CGM.ReturnTypeUsesFPRet(ResultType)) { |
| 1927 | Fn = (ObjCABI == 2) ? ObjCTypes.getSendFpretFn2(IsSuper) |
| 1928 | : ObjCTypes.getSendFpretFn(IsSuper); |
Anders Carlsson | eea6480 | 2011-10-31 16:27:11 +0000 | [diff] [blame] | 1929 | } else if (CGM.ReturnTypeUsesFP2Ret(ResultType)) { |
| 1930 | Fn = (ObjCABI == 2) ? ObjCTypes.getSendFp2RetFn2(IsSuper) |
| 1931 | : ObjCTypes.getSendFp2retFn(IsSuper); |
Daniel Dunbar | 5669e57 | 2008-10-17 03:24:53 +0000 | [diff] [blame] | 1932 | } else { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1933 | // arm64 uses objc_msgSend for stret methods and yet null receiver check |
| 1934 | // must be made for it. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1935 | if (ReceiverCanBeNull && CGM.ReturnTypeUsesSRet(MSI.CallInfo)) |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1936 | nullReturn.init(CGF, Arg0); |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 1937 | Fn = (ObjCABI == 2) ? ObjCTypes.getSendFn2(IsSuper) |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 1938 | : ObjCTypes.getSendFn(IsSuper); |
Daniel Dunbar | 5669e57 | 2008-10-17 03:24:53 +0000 | [diff] [blame] | 1939 | } |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1940 | |
| 1941 | // Emit a null-check if there's a consumed argument other than the receiver. |
| 1942 | bool RequiresNullCheck = false; |
| 1943 | if (ReceiverCanBeNull && CGM.getLangOpts().ObjCAutoRefCount && Method) { |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 1944 | for (const auto *ParamDecl : Method->parameters()) { |
Fariborz Jahanian | 3c267e6 | 2012-01-30 21:40:37 +0000 | [diff] [blame] | 1945 | if (ParamDecl->hasAttr<NSConsumedAttr>()) { |
| 1946 | if (!nullReturn.NullBB) |
| 1947 | nullReturn.init(CGF, Arg0); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1948 | RequiresNullCheck = true; |
Fariborz Jahanian | 3c267e6 | 2012-01-30 21:40:37 +0000 | [diff] [blame] | 1949 | break; |
| 1950 | } |
| 1951 | } |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1952 | } |
Fariborz Jahanian | 3c267e6 | 2012-01-30 21:40:37 +0000 | [diff] [blame] | 1953 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1954 | llvm::Instruction *CallSite; |
John McCall | de5d3c7 | 2012-02-17 03:33:10 +0000 | [diff] [blame] | 1955 | Fn = llvm::ConstantExpr::getBitCast(Fn, MSI.MessengerType); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1956 | RValue rvalue = CGF.EmitCall(MSI.CallInfo, Fn, Return, ActualArgs, |
| 1957 | CGCalleeInfo(), &CallSite); |
| 1958 | |
| 1959 | // Mark the call as noreturn if the method is marked noreturn and the |
| 1960 | // receiver cannot be null. |
| 1961 | if (Method && Method->hasAttr<NoReturnAttr>() && !ReceiverCanBeNull) { |
| 1962 | llvm::CallSite(CallSite).setDoesNotReturn(); |
| 1963 | } |
| 1964 | |
Fariborz Jahanian | 3c267e6 | 2012-01-30 21:40:37 +0000 | [diff] [blame] | 1965 | return nullReturn.complete(CGF, rvalue, ResultType, CallArgs, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1966 | RequiresNullCheck ? Method : nullptr); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1967 | } |
| 1968 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1969 | static Qualifiers::GC GetGCAttrTypeForType(ASTContext &Ctx, QualType FQT, |
| 1970 | bool pointee = false) { |
| 1971 | // Note that GC qualification applies recursively to C pointer types |
| 1972 | // that aren't otherwise decorated. This is weird, but it's probably |
| 1973 | // an intentional workaround to the unreliable placement of GC qualifiers. |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 1974 | if (FQT.isObjCGCStrong()) |
| 1975 | return Qualifiers::Strong; |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1976 | |
| 1977 | if (FQT.isObjCGCWeak()) |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 1978 | return Qualifiers::Weak; |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1979 | |
| 1980 | if (auto ownership = FQT.getObjCLifetime()) { |
| 1981 | // Ownership does not apply recursively to C pointer types. |
| 1982 | if (pointee) return Qualifiers::GCNone; |
| 1983 | switch (ownership) { |
| 1984 | case Qualifiers::OCL_Weak: return Qualifiers::Weak; |
| 1985 | case Qualifiers::OCL_Strong: return Qualifiers::Strong; |
| 1986 | case Qualifiers::OCL_ExplicitNone: return Qualifiers::GCNone; |
| 1987 | case Qualifiers::OCL_Autoreleasing: llvm_unreachable("autoreleasing ivar?"); |
| 1988 | case Qualifiers::OCL_None: llvm_unreachable("known nonzero"); |
| 1989 | } |
| 1990 | llvm_unreachable("bad objc ownership"); |
| 1991 | } |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 1992 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1993 | // Treat unqualified retainable pointers as strong. |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 1994 | if (FQT->isObjCObjectPointerType() || FQT->isBlockPointerType()) |
| 1995 | return Qualifiers::Strong; |
| 1996 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 1997 | // Walk into C pointer types, but only in GC. |
| 1998 | if (Ctx.getLangOpts().getGC() != LangOptions::NonGC) { |
| 1999 | if (const PointerType *PT = FQT->getAs<PointerType>()) |
| 2000 | return GetGCAttrTypeForType(Ctx, PT->getPointeeType(), /*pointee*/ true); |
| 2001 | } |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 2002 | |
| 2003 | return Qualifiers::GCNone; |
| 2004 | } |
| 2005 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2006 | namespace { |
| 2007 | struct IvarInfo { |
| 2008 | CharUnits Offset; |
| 2009 | uint64_t SizeInWords; |
| 2010 | IvarInfo(CharUnits offset, uint64_t sizeInWords) |
| 2011 | : Offset(offset), SizeInWords(sizeInWords) {} |
| 2012 | |
| 2013 | // Allow sorting based on byte pos. |
| 2014 | bool operator<(const IvarInfo &other) const { |
| 2015 | return Offset < other.Offset; |
| 2016 | } |
| 2017 | }; |
| 2018 | |
| 2019 | /// A helper class for building GC layout strings. |
| 2020 | class IvarLayoutBuilder { |
| 2021 | CodeGenModule &CGM; |
| 2022 | |
| 2023 | /// The start of the layout. Offsets will be relative to this value, |
| 2024 | /// and entries less than this value will be silently discarded. |
| 2025 | CharUnits InstanceBegin; |
| 2026 | |
| 2027 | /// The end of the layout. Offsets will never exceed this value. |
| 2028 | CharUnits InstanceEnd; |
| 2029 | |
| 2030 | /// Whether we're generating the strong layout or the weak layout. |
| 2031 | bool ForStrongLayout; |
| 2032 | |
| 2033 | /// Whether the offsets in IvarsInfo might be out-of-order. |
| 2034 | bool IsDisordered = false; |
| 2035 | |
| 2036 | llvm::SmallVector<IvarInfo, 8> IvarsInfo; |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2037 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2038 | public: |
| 2039 | IvarLayoutBuilder(CodeGenModule &CGM, CharUnits instanceBegin, |
| 2040 | CharUnits instanceEnd, bool forStrongLayout) |
| 2041 | : CGM(CGM), InstanceBegin(instanceBegin), InstanceEnd(instanceEnd), |
| 2042 | ForStrongLayout(forStrongLayout) { |
| 2043 | } |
| 2044 | |
| 2045 | void visitRecord(const RecordType *RT, CharUnits offset); |
| 2046 | |
| 2047 | template <class Iterator, class GetOffsetFn> |
| 2048 | void visitAggregate(Iterator begin, Iterator end, |
| 2049 | CharUnits aggrOffset, |
| 2050 | const GetOffsetFn &getOffset); |
| 2051 | |
| 2052 | void visitField(const FieldDecl *field, CharUnits offset); |
| 2053 | |
| 2054 | /// Add the layout of a block implementation. |
| 2055 | void visitBlock(const CGBlockInfo &blockInfo); |
| 2056 | |
| 2057 | /// Is there any information for an interesting bitmap? |
| 2058 | bool hasBitmapData() const { return !IvarsInfo.empty(); } |
| 2059 | |
| 2060 | llvm::Constant *buildBitmap(CGObjCCommonMac &CGObjC, |
| 2061 | llvm::SmallVectorImpl<unsigned char> &buffer); |
| 2062 | |
| 2063 | static void dump(ArrayRef<unsigned char> buffer) { |
| 2064 | const unsigned char *s = buffer.data(); |
| 2065 | for (unsigned i = 0, e = buffer.size(); i < e; i++) |
| 2066 | if (!(s[i] & 0xf0)) |
| 2067 | printf("0x0%x%s", s[i], s[i] != 0 ? ", " : ""); |
| 2068 | else |
| 2069 | printf("0x%x%s", s[i], s[i] != 0 ? ", " : ""); |
| 2070 | printf("\n"); |
| 2071 | } |
| 2072 | }; |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2073 | } // end anonymous namespace |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2074 | |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 2075 | llvm::Constant *CGObjCCommonMac::BuildGCBlockLayout(CodeGenModule &CGM, |
| 2076 | const CGBlockInfo &blockInfo) { |
Fariborz Jahanian | c46b435 | 2012-10-27 21:10:38 +0000 | [diff] [blame] | 2077 | |
Chris Lattner | 8b41868 | 2012-02-07 00:39:47 +0000 | [diff] [blame] | 2078 | llvm::Constant *nullPtr = llvm::Constant::getNullValue(CGM.Int8PtrTy); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2079 | if (CGM.getLangOpts().getGC() == LangOptions::NonGC) |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 2080 | return nullPtr; |
| 2081 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2082 | IvarLayoutBuilder builder(CGM, CharUnits::Zero(), blockInfo.BlockSize, |
| 2083 | /*for strong layout*/ true); |
| 2084 | |
| 2085 | builder.visitBlock(blockInfo); |
| 2086 | |
| 2087 | if (!builder.hasBitmapData()) |
| 2088 | return nullPtr; |
| 2089 | |
| 2090 | llvm::SmallVector<unsigned char, 32> buffer; |
| 2091 | llvm::Constant *C = builder.buildBitmap(*this, buffer); |
| 2092 | if (CGM.getLangOpts().ObjCGCBitmapPrint && !buffer.empty()) { |
| 2093 | printf("\n block variable layout for block: "); |
| 2094 | builder.dump(buffer); |
| 2095 | } |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 2096 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2097 | return C; |
| 2098 | } |
| 2099 | |
| 2100 | void IvarLayoutBuilder::visitBlock(const CGBlockInfo &blockInfo) { |
Fariborz Jahanian | 8197982 | 2010-09-09 00:21:45 +0000 | [diff] [blame] | 2101 | // __isa is the first field in block descriptor and must assume by runtime's |
| 2102 | // convention that it is GC'able. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2103 | IvarsInfo.push_back(IvarInfo(CharUnits::Zero(), 1)); |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 2104 | |
| 2105 | const BlockDecl *blockDecl = blockInfo.getBlockDecl(); |
| 2106 | |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 2107 | // Ignore the optional 'this' capture: C++ objects are not assumed |
| 2108 | // to be GC'ed. |
| 2109 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2110 | CharUnits lastFieldOffset; |
| 2111 | |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 2112 | // Walk the captured variables. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2113 | for (const auto &CI : blockDecl->captures()) { |
| 2114 | const VarDecl *variable = CI.getVariable(); |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 2115 | QualType type = variable->getType(); |
| 2116 | |
| 2117 | const CGBlockInfo::Capture &capture = blockInfo.getCapture(variable); |
| 2118 | |
| 2119 | // Ignore constant captures. |
| 2120 | if (capture.isConstant()) continue; |
| 2121 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2122 | CharUnits fieldOffset = capture.getOffset(); |
| 2123 | |
| 2124 | // Block fields are not necessarily ordered; if we detect that we're |
| 2125 | // adding them out-of-order, make sure we sort later. |
| 2126 | if (fieldOffset < lastFieldOffset) |
| 2127 | IsDisordered = true; |
| 2128 | lastFieldOffset = fieldOffset; |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 2129 | |
| 2130 | // __block variables are passed by their descriptor address. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2131 | if (CI.isByRef()) { |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2132 | IvarsInfo.push_back(IvarInfo(fieldOffset, /*size in words*/ 1)); |
Fariborz Jahanian | c5904b4 | 2010-09-11 01:27:29 +0000 | [diff] [blame] | 2133 | continue; |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 2134 | } |
| 2135 | |
| 2136 | assert(!type->isArrayType() && "array variable should not be caught"); |
| 2137 | if (const RecordType *record = type->getAs<RecordType>()) { |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2138 | visitRecord(record, fieldOffset); |
Fariborz Jahanian | e1a4898 | 2010-08-05 21:00:25 +0000 | [diff] [blame] | 2139 | continue; |
| 2140 | } |
Fariborz Jahanian | a1f024c | 2010-08-06 16:28:55 +0000 | [diff] [blame] | 2141 | |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 2142 | Qualifiers::GC GCAttr = GetGCAttrTypeForType(CGM.getContext(), type); |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 2143 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2144 | if (GCAttr == Qualifiers::Strong) { |
| 2145 | assert(CGM.getContext().getTypeSize(type) |
| 2146 | == CGM.getTarget().getPointerWidth(0)); |
| 2147 | IvarsInfo.push_back(IvarInfo(fieldOffset, /*size in words*/ 1)); |
| 2148 | } |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 2149 | } |
Fariborz Jahanian | 89ecd41 | 2010-08-04 16:57:49 +0000 | [diff] [blame] | 2150 | } |
| 2151 | |
Fariborz Jahanian | c441cd3 | 2012-11-04 18:19:40 +0000 | [diff] [blame] | 2152 | /// getBlockCaptureLifetime - This routine returns life time of the captured |
| 2153 | /// block variable for the purpose of block layout meta-data generation. FQT is |
| 2154 | /// the type of the variable captured in the block. |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2155 | Qualifiers::ObjCLifetime CGObjCCommonMac::getBlockCaptureLifetime(QualType FQT, |
| 2156 | bool ByrefLayout) { |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2157 | // If it has an ownership qualifier, we're done. |
| 2158 | if (auto lifetime = FQT.getObjCLifetime()) |
| 2159 | return lifetime; |
| 2160 | |
| 2161 | // If it doesn't, and this is ARC, it has no ownership. |
Fariborz Jahanian | 44fcff9 | 2012-11-02 22:51:18 +0000 | [diff] [blame] | 2162 | if (CGM.getLangOpts().ObjCAutoRefCount) |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2163 | return Qualifiers::OCL_None; |
Fariborz Jahanian | 44fcff9 | 2012-11-02 22:51:18 +0000 | [diff] [blame] | 2164 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2165 | // In MRC, retainable pointers are owned by non-__block variables. |
Fariborz Jahanian | 44fcff9 | 2012-11-02 22:51:18 +0000 | [diff] [blame] | 2166 | if (FQT->isObjCObjectPointerType() || FQT->isBlockPointerType()) |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2167 | return ByrefLayout ? Qualifiers::OCL_ExplicitNone : Qualifiers::OCL_Strong; |
Fariborz Jahanian | 44fcff9 | 2012-11-02 22:51:18 +0000 | [diff] [blame] | 2168 | |
| 2169 | return Qualifiers::OCL_None; |
| 2170 | } |
| 2171 | |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2172 | void CGObjCCommonMac::UpdateRunSkipBlockVars(bool IsByref, |
| 2173 | Qualifiers::ObjCLifetime LifeTime, |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2174 | CharUnits FieldOffset, |
| 2175 | CharUnits FieldSize) { |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2176 | // __block variables are passed by their descriptor address. |
| 2177 | if (IsByref) |
| 2178 | RunSkipBlockVars.push_back(RUN_SKIP(BLOCK_LAYOUT_BYREF, FieldOffset, |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2179 | FieldSize)); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2180 | else if (LifeTime == Qualifiers::OCL_Strong) |
| 2181 | RunSkipBlockVars.push_back(RUN_SKIP(BLOCK_LAYOUT_STRONG, FieldOffset, |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2182 | FieldSize)); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2183 | else if (LifeTime == Qualifiers::OCL_Weak) |
| 2184 | RunSkipBlockVars.push_back(RUN_SKIP(BLOCK_LAYOUT_WEAK, FieldOffset, |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2185 | FieldSize)); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2186 | else if (LifeTime == Qualifiers::OCL_ExplicitNone) |
| 2187 | RunSkipBlockVars.push_back(RUN_SKIP(BLOCK_LAYOUT_UNRETAINED, FieldOffset, |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2188 | FieldSize)); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2189 | else |
| 2190 | RunSkipBlockVars.push_back(RUN_SKIP(BLOCK_LAYOUT_NON_OBJECT_BYTES, |
| 2191 | FieldOffset, |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2192 | FieldSize)); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2193 | } |
| 2194 | |
| 2195 | void CGObjCCommonMac::BuildRCRecordLayout(const llvm::StructLayout *RecLayout, |
| 2196 | const RecordDecl *RD, |
| 2197 | ArrayRef<const FieldDecl*> RecFields, |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2198 | CharUnits BytePos, bool &HasUnion, |
| 2199 | bool ByrefLayout) { |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2200 | bool IsUnion = (RD && RD->isUnion()); |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2201 | CharUnits MaxUnionSize = CharUnits::Zero(); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 2202 | const FieldDecl *MaxField = nullptr; |
| 2203 | const FieldDecl *LastFieldBitfieldOrUnnamed = nullptr; |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2204 | CharUnits MaxFieldOffset = CharUnits::Zero(); |
| 2205 | CharUnits LastBitfieldOrUnnamedOffset = CharUnits::Zero(); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2206 | |
| 2207 | if (RecFields.empty()) |
| 2208 | return; |
John McCall | 64aa4b3 | 2013-04-16 22:48:15 +0000 | [diff] [blame] | 2209 | unsigned ByteSizeInBits = CGM.getTarget().getCharWidth(); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2210 | |
| 2211 | for (unsigned i = 0, e = RecFields.size(); i != e; ++i) { |
| 2212 | const FieldDecl *Field = RecFields[i]; |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2213 | // Note that 'i' here is actually the field index inside RD of Field, |
| 2214 | // although this dependency is hidden. |
| 2215 | const ASTRecordLayout &RL = CGM.getContext().getASTRecordLayout(RD); |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2216 | CharUnits FieldOffset = |
| 2217 | CGM.getContext().toCharUnitsFromBits(RL.getFieldOffset(i)); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2218 | |
| 2219 | // Skip over unnamed or bitfields |
| 2220 | if (!Field->getIdentifier() || Field->isBitField()) { |
| 2221 | LastFieldBitfieldOrUnnamed = Field; |
| 2222 | LastBitfieldOrUnnamedOffset = FieldOffset; |
| 2223 | continue; |
| 2224 | } |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 2225 | |
| 2226 | LastFieldBitfieldOrUnnamed = nullptr; |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2227 | QualType FQT = Field->getType(); |
| 2228 | if (FQT->isRecordType() || FQT->isUnionType()) { |
| 2229 | if (FQT->isUnionType()) |
| 2230 | HasUnion = true; |
| 2231 | |
| 2232 | BuildRCBlockVarRecordLayout(FQT->getAs<RecordType>(), |
| 2233 | BytePos + FieldOffset, HasUnion); |
| 2234 | continue; |
| 2235 | } |
| 2236 | |
| 2237 | if (const ArrayType *Array = CGM.getContext().getAsArrayType(FQT)) { |
| 2238 | const ConstantArrayType *CArray = |
| 2239 | dyn_cast_or_null<ConstantArrayType>(Array); |
| 2240 | uint64_t ElCount = CArray->getSize().getZExtValue(); |
| 2241 | assert(CArray && "only array with known element size is supported"); |
| 2242 | FQT = CArray->getElementType(); |
| 2243 | while (const ArrayType *Array = CGM.getContext().getAsArrayType(FQT)) { |
| 2244 | const ConstantArrayType *CArray = |
| 2245 | dyn_cast_or_null<ConstantArrayType>(Array); |
| 2246 | ElCount *= CArray->getSize().getZExtValue(); |
| 2247 | FQT = CArray->getElementType(); |
| 2248 | } |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2249 | if (FQT->isRecordType() && ElCount) { |
| 2250 | int OldIndex = RunSkipBlockVars.size() - 1; |
| 2251 | const RecordType *RT = FQT->getAs<RecordType>(); |
| 2252 | BuildRCBlockVarRecordLayout(RT, BytePos + FieldOffset, |
| 2253 | HasUnion); |
| 2254 | |
| 2255 | // Replicate layout information for each array element. Note that |
| 2256 | // one element is already done. |
| 2257 | uint64_t ElIx = 1; |
| 2258 | for (int FirstIndex = RunSkipBlockVars.size() - 1 ;ElIx < ElCount; ElIx++) { |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2259 | CharUnits Size = CGM.getContext().getTypeSizeInChars(RT); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2260 | for (int i = OldIndex+1; i <= FirstIndex; ++i) |
| 2261 | RunSkipBlockVars.push_back( |
| 2262 | RUN_SKIP(RunSkipBlockVars[i].opcode, |
| 2263 | RunSkipBlockVars[i].block_var_bytepos + Size*ElIx, |
| 2264 | RunSkipBlockVars[i].block_var_size)); |
| 2265 | } |
| 2266 | continue; |
| 2267 | } |
| 2268 | } |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2269 | CharUnits FieldSize = CGM.getContext().getTypeSizeInChars(Field->getType()); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2270 | if (IsUnion) { |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2271 | CharUnits UnionIvarSize = FieldSize; |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2272 | if (UnionIvarSize > MaxUnionSize) { |
| 2273 | MaxUnionSize = UnionIvarSize; |
| 2274 | MaxField = Field; |
| 2275 | MaxFieldOffset = FieldOffset; |
| 2276 | } |
| 2277 | } else { |
| 2278 | UpdateRunSkipBlockVars(false, |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2279 | getBlockCaptureLifetime(FQT, ByrefLayout), |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2280 | BytePos + FieldOffset, |
| 2281 | FieldSize); |
| 2282 | } |
| 2283 | } |
| 2284 | |
| 2285 | if (LastFieldBitfieldOrUnnamed) { |
| 2286 | if (LastFieldBitfieldOrUnnamed->isBitField()) { |
| 2287 | // Last field was a bitfield. Must update the info. |
| 2288 | uint64_t BitFieldSize |
| 2289 | = LastFieldBitfieldOrUnnamed->getBitWidthValue(CGM.getContext()); |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2290 | unsigned UnsSize = (BitFieldSize / ByteSizeInBits) + |
Eli Friedman | e5b4666 | 2012-11-06 22:15:52 +0000 | [diff] [blame] | 2291 | ((BitFieldSize % ByteSizeInBits) != 0); |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2292 | CharUnits Size = CharUnits::fromQuantity(UnsSize); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2293 | Size += LastBitfieldOrUnnamedOffset; |
| 2294 | UpdateRunSkipBlockVars(false, |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2295 | getBlockCaptureLifetime(LastFieldBitfieldOrUnnamed->getType(), |
| 2296 | ByrefLayout), |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2297 | BytePos + LastBitfieldOrUnnamedOffset, |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2298 | Size); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2299 | } else { |
| 2300 | assert(!LastFieldBitfieldOrUnnamed->getIdentifier() &&"Expected unnamed"); |
| 2301 | // Last field was unnamed. Must update skip info. |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2302 | CharUnits FieldSize |
| 2303 | = CGM.getContext().getTypeSizeInChars(LastFieldBitfieldOrUnnamed->getType()); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2304 | UpdateRunSkipBlockVars(false, |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2305 | getBlockCaptureLifetime(LastFieldBitfieldOrUnnamed->getType(), |
| 2306 | ByrefLayout), |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2307 | BytePos + LastBitfieldOrUnnamedOffset, |
| 2308 | FieldSize); |
| 2309 | } |
| 2310 | } |
| 2311 | |
| 2312 | if (MaxField) |
| 2313 | UpdateRunSkipBlockVars(false, |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2314 | getBlockCaptureLifetime(MaxField->getType(), ByrefLayout), |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2315 | BytePos + MaxFieldOffset, |
| 2316 | MaxUnionSize); |
| 2317 | } |
| 2318 | |
| 2319 | void CGObjCCommonMac::BuildRCBlockVarRecordLayout(const RecordType *RT, |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2320 | CharUnits BytePos, |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2321 | bool &HasUnion, |
| 2322 | bool ByrefLayout) { |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2323 | const RecordDecl *RD = RT->getDecl(); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2324 | SmallVector<const FieldDecl*, 16> Fields(RD->fields()); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2325 | llvm::Type *Ty = CGM.getTypes().ConvertType(QualType(RT, 0)); |
| 2326 | const llvm::StructLayout *RecLayout = |
| 2327 | CGM.getDataLayout().getStructLayout(cast<llvm::StructType>(Ty)); |
| 2328 | |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2329 | BuildRCRecordLayout(RecLayout, RD, Fields, BytePos, HasUnion, ByrefLayout); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2330 | } |
| 2331 | |
Fariborz Jahanian | f22ae65 | 2012-11-01 18:32:55 +0000 | [diff] [blame] | 2332 | /// InlineLayoutInstruction - This routine produce an inline instruction for the |
| 2333 | /// block variable layout if it can. If not, it returns 0. Rules are as follow: |
| 2334 | /// If ((uintptr_t) layout) < (1 << 12), the layout is inline. In the 64bit world, |
| 2335 | /// an inline layout of value 0x0000000000000xyz is interpreted as follows: |
| 2336 | /// x captured object pointers of BLOCK_LAYOUT_STRONG. Followed by |
| 2337 | /// y captured object of BLOCK_LAYOUT_BYREF. Followed by |
| 2338 | /// z captured object of BLOCK_LAYOUT_WEAK. If any of the above is missing, zero |
| 2339 | /// replaces it. For example, 0x00000x00 means x BLOCK_LAYOUT_STRONG and no |
| 2340 | /// BLOCK_LAYOUT_BYREF and no BLOCK_LAYOUT_WEAK objects are captured. |
| 2341 | uint64_t CGObjCCommonMac::InlineLayoutInstruction( |
| 2342 | SmallVectorImpl<unsigned char> &Layout) { |
| 2343 | uint64_t Result = 0; |
| 2344 | if (Layout.size() <= 3) { |
| 2345 | unsigned size = Layout.size(); |
| 2346 | unsigned strong_word_count = 0, byref_word_count=0, weak_word_count=0; |
| 2347 | unsigned char inst; |
| 2348 | enum BLOCK_LAYOUT_OPCODE opcode ; |
| 2349 | switch (size) { |
| 2350 | case 3: |
| 2351 | inst = Layout[0]; |
| 2352 | opcode = (enum BLOCK_LAYOUT_OPCODE) (inst >> 4); |
| 2353 | if (opcode == BLOCK_LAYOUT_STRONG) |
| 2354 | strong_word_count = (inst & 0xF)+1; |
| 2355 | else |
| 2356 | return 0; |
| 2357 | inst = Layout[1]; |
| 2358 | opcode = (enum BLOCK_LAYOUT_OPCODE) (inst >> 4); |
| 2359 | if (opcode == BLOCK_LAYOUT_BYREF) |
| 2360 | byref_word_count = (inst & 0xF)+1; |
| 2361 | else |
| 2362 | return 0; |
| 2363 | inst = Layout[2]; |
| 2364 | opcode = (enum BLOCK_LAYOUT_OPCODE) (inst >> 4); |
| 2365 | if (opcode == BLOCK_LAYOUT_WEAK) |
| 2366 | weak_word_count = (inst & 0xF)+1; |
| 2367 | else |
| 2368 | return 0; |
| 2369 | break; |
| 2370 | |
| 2371 | case 2: |
| 2372 | inst = Layout[0]; |
| 2373 | opcode = (enum BLOCK_LAYOUT_OPCODE) (inst >> 4); |
| 2374 | if (opcode == BLOCK_LAYOUT_STRONG) { |
| 2375 | strong_word_count = (inst & 0xF)+1; |
| 2376 | inst = Layout[1]; |
| 2377 | opcode = (enum BLOCK_LAYOUT_OPCODE) (inst >> 4); |
| 2378 | if (opcode == BLOCK_LAYOUT_BYREF) |
| 2379 | byref_word_count = (inst & 0xF)+1; |
| 2380 | else if (opcode == BLOCK_LAYOUT_WEAK) |
| 2381 | weak_word_count = (inst & 0xF)+1; |
| 2382 | else |
| 2383 | return 0; |
| 2384 | } |
| 2385 | else if (opcode == BLOCK_LAYOUT_BYREF) { |
| 2386 | byref_word_count = (inst & 0xF)+1; |
| 2387 | inst = Layout[1]; |
| 2388 | opcode = (enum BLOCK_LAYOUT_OPCODE) (inst >> 4); |
| 2389 | if (opcode == BLOCK_LAYOUT_WEAK) |
| 2390 | weak_word_count = (inst & 0xF)+1; |
| 2391 | else |
| 2392 | return 0; |
| 2393 | } |
| 2394 | else |
| 2395 | return 0; |
| 2396 | break; |
| 2397 | |
| 2398 | case 1: |
| 2399 | inst = Layout[0]; |
| 2400 | opcode = (enum BLOCK_LAYOUT_OPCODE) (inst >> 4); |
| 2401 | if (opcode == BLOCK_LAYOUT_STRONG) |
| 2402 | strong_word_count = (inst & 0xF)+1; |
| 2403 | else if (opcode == BLOCK_LAYOUT_BYREF) |
| 2404 | byref_word_count = (inst & 0xF)+1; |
| 2405 | else if (opcode == BLOCK_LAYOUT_WEAK) |
| 2406 | weak_word_count = (inst & 0xF)+1; |
| 2407 | else |
| 2408 | return 0; |
| 2409 | break; |
| 2410 | |
| 2411 | default: |
| 2412 | return 0; |
| 2413 | } |
| 2414 | |
| 2415 | // Cannot inline when any of the word counts is 15. Because this is one less |
| 2416 | // than the actual work count (so 15 means 16 actual word counts), |
| 2417 | // and we can only display 0 thru 15 word counts. |
| 2418 | if (strong_word_count == 16 || byref_word_count == 16 || weak_word_count == 16) |
| 2419 | return 0; |
| 2420 | |
| 2421 | unsigned count = |
| 2422 | (strong_word_count != 0) + (byref_word_count != 0) + (weak_word_count != 0); |
| 2423 | |
| 2424 | if (size == count) { |
| 2425 | if (strong_word_count) |
| 2426 | Result = strong_word_count; |
| 2427 | Result <<= 4; |
| 2428 | if (byref_word_count) |
| 2429 | Result += byref_word_count; |
| 2430 | Result <<= 4; |
| 2431 | if (weak_word_count) |
| 2432 | Result += weak_word_count; |
| 2433 | } |
| 2434 | } |
| 2435 | return Result; |
| 2436 | } |
| 2437 | |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2438 | llvm::Constant *CGObjCCommonMac::getBitmapBlockLayout(bool ComputeByrefLayout) { |
| 2439 | llvm::Constant *nullPtr = llvm::Constant::getNullValue(CGM.Int8PtrTy); |
| 2440 | if (RunSkipBlockVars.empty()) |
| 2441 | return nullPtr; |
John McCall | 64aa4b3 | 2013-04-16 22:48:15 +0000 | [diff] [blame] | 2442 | unsigned WordSizeInBits = CGM.getTarget().getPointerWidth(0); |
| 2443 | unsigned ByteSizeInBits = CGM.getTarget().getCharWidth(); |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2444 | unsigned WordSizeInBytes = WordSizeInBits/ByteSizeInBits; |
| 2445 | |
| 2446 | // Sort on byte position; captures might not be allocated in order, |
| 2447 | // and unions can do funny things. |
| 2448 | llvm::array_pod_sort(RunSkipBlockVars.begin(), RunSkipBlockVars.end()); |
| 2449 | SmallVector<unsigned char, 16> Layout; |
| 2450 | |
| 2451 | unsigned size = RunSkipBlockVars.size(); |
| 2452 | for (unsigned i = 0; i < size; i++) { |
| 2453 | enum BLOCK_LAYOUT_OPCODE opcode = RunSkipBlockVars[i].opcode; |
| 2454 | CharUnits start_byte_pos = RunSkipBlockVars[i].block_var_bytepos; |
| 2455 | CharUnits end_byte_pos = start_byte_pos; |
| 2456 | unsigned j = i+1; |
| 2457 | while (j < size) { |
| 2458 | if (opcode == RunSkipBlockVars[j].opcode) { |
| 2459 | end_byte_pos = RunSkipBlockVars[j++].block_var_bytepos; |
| 2460 | i++; |
| 2461 | } |
| 2462 | else |
| 2463 | break; |
| 2464 | } |
| 2465 | CharUnits size_in_bytes = |
| 2466 | end_byte_pos - start_byte_pos + RunSkipBlockVars[j-1].block_var_size; |
| 2467 | if (j < size) { |
| 2468 | CharUnits gap = |
| 2469 | RunSkipBlockVars[j].block_var_bytepos - |
| 2470 | RunSkipBlockVars[j-1].block_var_bytepos - RunSkipBlockVars[j-1].block_var_size; |
| 2471 | size_in_bytes += gap; |
| 2472 | } |
| 2473 | CharUnits residue_in_bytes = CharUnits::Zero(); |
| 2474 | if (opcode == BLOCK_LAYOUT_NON_OBJECT_BYTES) { |
| 2475 | residue_in_bytes = size_in_bytes % WordSizeInBytes; |
| 2476 | size_in_bytes -= residue_in_bytes; |
| 2477 | opcode = BLOCK_LAYOUT_NON_OBJECT_WORDS; |
| 2478 | } |
| 2479 | |
| 2480 | unsigned size_in_words = size_in_bytes.getQuantity() / WordSizeInBytes; |
| 2481 | while (size_in_words >= 16) { |
| 2482 | // Note that value in imm. is one less that the actual |
| 2483 | // value. So, 0xf means 16 words follow! |
| 2484 | unsigned char inst = (opcode << 4) | 0xf; |
| 2485 | Layout.push_back(inst); |
| 2486 | size_in_words -= 16; |
| 2487 | } |
| 2488 | if (size_in_words > 0) { |
| 2489 | // Note that value in imm. is one less that the actual |
| 2490 | // value. So, we subtract 1 away! |
| 2491 | unsigned char inst = (opcode << 4) | (size_in_words-1); |
| 2492 | Layout.push_back(inst); |
| 2493 | } |
| 2494 | if (residue_in_bytes > CharUnits::Zero()) { |
| 2495 | unsigned char inst = |
| 2496 | (BLOCK_LAYOUT_NON_OBJECT_BYTES << 4) | (residue_in_bytes.getQuantity()-1); |
| 2497 | Layout.push_back(inst); |
| 2498 | } |
| 2499 | } |
| 2500 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2501 | while (!Layout.empty()) { |
| 2502 | unsigned char inst = Layout.back(); |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2503 | enum BLOCK_LAYOUT_OPCODE opcode = (enum BLOCK_LAYOUT_OPCODE) (inst >> 4); |
| 2504 | if (opcode == BLOCK_LAYOUT_NON_OBJECT_BYTES || opcode == BLOCK_LAYOUT_NON_OBJECT_WORDS) |
| 2505 | Layout.pop_back(); |
| 2506 | else |
| 2507 | break; |
| 2508 | } |
| 2509 | |
| 2510 | uint64_t Result = InlineLayoutInstruction(Layout); |
| 2511 | if (Result != 0) { |
| 2512 | // Block variable layout instruction has been inlined. |
| 2513 | if (CGM.getLangOpts().ObjCGCBitmapPrint) { |
| 2514 | if (ComputeByrefLayout) |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2515 | printf("\n Inline BYREF variable layout: "); |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2516 | else |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2517 | printf("\n Inline block variable layout: "); |
| 2518 | printf("0x0%" PRIx64 "", Result); |
| 2519 | if (auto numStrong = (Result & 0xF00) >> 8) |
| 2520 | printf(", BL_STRONG:%d", (int) numStrong); |
| 2521 | if (auto numByref = (Result & 0x0F0) >> 4) |
| 2522 | printf(", BL_BYREF:%d", (int) numByref); |
| 2523 | if (auto numWeak = (Result & 0x00F) >> 0) |
| 2524 | printf(", BL_WEAK:%d", (int) numWeak); |
| 2525 | printf(", BL_OPERATOR:0\n"); |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2526 | } |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2527 | return llvm::ConstantInt::get(CGM.IntPtrTy, Result); |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2528 | } |
| 2529 | |
| 2530 | unsigned char inst = (BLOCK_LAYOUT_OPERATOR << 4) | 0; |
| 2531 | Layout.push_back(inst); |
| 2532 | std::string BitMap; |
| 2533 | for (unsigned i = 0, e = Layout.size(); i != e; i++) |
| 2534 | BitMap += Layout[i]; |
| 2535 | |
| 2536 | if (CGM.getLangOpts().ObjCGCBitmapPrint) { |
| 2537 | if (ComputeByrefLayout) |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2538 | printf("\n Byref variable layout: "); |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2539 | else |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2540 | printf("\n Block variable layout: "); |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2541 | for (unsigned i = 0, e = BitMap.size(); i != e; i++) { |
| 2542 | unsigned char inst = BitMap[i]; |
| 2543 | enum BLOCK_LAYOUT_OPCODE opcode = (enum BLOCK_LAYOUT_OPCODE) (inst >> 4); |
| 2544 | unsigned delta = 1; |
| 2545 | switch (opcode) { |
| 2546 | case BLOCK_LAYOUT_OPERATOR: |
| 2547 | printf("BL_OPERATOR:"); |
| 2548 | delta = 0; |
| 2549 | break; |
| 2550 | case BLOCK_LAYOUT_NON_OBJECT_BYTES: |
| 2551 | printf("BL_NON_OBJECT_BYTES:"); |
| 2552 | break; |
| 2553 | case BLOCK_LAYOUT_NON_OBJECT_WORDS: |
| 2554 | printf("BL_NON_OBJECT_WORD:"); |
| 2555 | break; |
| 2556 | case BLOCK_LAYOUT_STRONG: |
| 2557 | printf("BL_STRONG:"); |
| 2558 | break; |
| 2559 | case BLOCK_LAYOUT_BYREF: |
| 2560 | printf("BL_BYREF:"); |
| 2561 | break; |
| 2562 | case BLOCK_LAYOUT_WEAK: |
| 2563 | printf("BL_WEAK:"); |
| 2564 | break; |
| 2565 | case BLOCK_LAYOUT_UNRETAINED: |
| 2566 | printf("BL_UNRETAINED:"); |
| 2567 | break; |
| 2568 | } |
| 2569 | // Actual value of word count is one more that what is in the imm. |
| 2570 | // field of the instruction |
| 2571 | printf("%d", (inst & 0xf) + delta); |
| 2572 | if (i < e-1) |
| 2573 | printf(", "); |
| 2574 | else |
| 2575 | printf("\n"); |
| 2576 | } |
| 2577 | } |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 2578 | |
| 2579 | llvm::GlobalVariable *Entry = CreateMetadataVar( |
| 2580 | "OBJC_CLASS_NAME_", |
| 2581 | llvm::ConstantDataArray::getString(VMContext, BitMap, false), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2582 | "__TEXT,__objc_classname,cstring_literals", CharUnits::One(), true); |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2583 | return getConstantGEP(VMContext, Entry, 0, 0); |
| 2584 | } |
| 2585 | |
Fariborz Jahanian | c46b435 | 2012-10-27 21:10:38 +0000 | [diff] [blame] | 2586 | llvm::Constant *CGObjCCommonMac::BuildRCBlockLayout(CodeGenModule &CGM, |
| 2587 | const CGBlockInfo &blockInfo) { |
Fariborz Jahanian | c46b435 | 2012-10-27 21:10:38 +0000 | [diff] [blame] | 2588 | assert(CGM.getLangOpts().getGC() == LangOptions::NonGC); |
| 2589 | |
Fariborz Jahanian | c46b435 | 2012-10-27 21:10:38 +0000 | [diff] [blame] | 2590 | RunSkipBlockVars.clear(); |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2591 | bool hasUnion = false; |
| 2592 | |
John McCall | 64aa4b3 | 2013-04-16 22:48:15 +0000 | [diff] [blame] | 2593 | unsigned WordSizeInBits = CGM.getTarget().getPointerWidth(0); |
| 2594 | unsigned ByteSizeInBits = CGM.getTarget().getCharWidth(); |
Fariborz Jahanian | c46b435 | 2012-10-27 21:10:38 +0000 | [diff] [blame] | 2595 | unsigned WordSizeInBytes = WordSizeInBits/ByteSizeInBits; |
| 2596 | |
| 2597 | const BlockDecl *blockDecl = blockInfo.getBlockDecl(); |
| 2598 | |
| 2599 | // Calculate the basic layout of the block structure. |
| 2600 | const llvm::StructLayout *layout = |
| 2601 | CGM.getDataLayout().getStructLayout(blockInfo.StructureType); |
| 2602 | |
| 2603 | // Ignore the optional 'this' capture: C++ objects are not assumed |
| 2604 | // to be GC'ed. |
Fariborz Jahanian | ff685c5 | 2012-12-04 17:20:57 +0000 | [diff] [blame] | 2605 | if (blockInfo.BlockHeaderForcedGapSize != CharUnits::Zero()) |
| 2606 | UpdateRunSkipBlockVars(false, Qualifiers::OCL_None, |
| 2607 | blockInfo.BlockHeaderForcedGapOffset, |
| 2608 | blockInfo.BlockHeaderForcedGapSize); |
Fariborz Jahanian | c46b435 | 2012-10-27 21:10:38 +0000 | [diff] [blame] | 2609 | // Walk the captured variables. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2610 | for (const auto &CI : blockDecl->captures()) { |
| 2611 | const VarDecl *variable = CI.getVariable(); |
Fariborz Jahanian | c46b435 | 2012-10-27 21:10:38 +0000 | [diff] [blame] | 2612 | QualType type = variable->getType(); |
| 2613 | |
| 2614 | const CGBlockInfo::Capture &capture = blockInfo.getCapture(variable); |
| 2615 | |
| 2616 | // Ignore constant captures. |
| 2617 | if (capture.isConstant()) continue; |
| 2618 | |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2619 | CharUnits fieldOffset = |
| 2620 | CharUnits::fromQuantity(layout->getElementOffset(capture.getIndex())); |
Fariborz Jahanian | c46b435 | 2012-10-27 21:10:38 +0000 | [diff] [blame] | 2621 | |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2622 | assert(!type->isArrayType() && "array variable should not be caught"); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2623 | if (!CI.isByRef()) |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2624 | if (const RecordType *record = type->getAs<RecordType>()) { |
| 2625 | BuildRCBlockVarRecordLayout(record, fieldOffset, hasUnion); |
| 2626 | continue; |
| 2627 | } |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2628 | CharUnits fieldSize; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2629 | if (CI.isByRef()) |
Fariborz Jahanian | 1da01d6 | 2012-11-07 20:00:32 +0000 | [diff] [blame] | 2630 | fieldSize = CharUnits::fromQuantity(WordSizeInBytes); |
| 2631 | else |
| 2632 | fieldSize = CGM.getContext().getTypeSizeInChars(type); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2633 | UpdateRunSkipBlockVars(CI.isByRef(), getBlockCaptureLifetime(type, false), |
Fariborz Jahanian | c6abe9e | 2012-10-30 20:05:29 +0000 | [diff] [blame] | 2634 | fieldOffset, fieldSize); |
Fariborz Jahanian | c46b435 | 2012-10-27 21:10:38 +0000 | [diff] [blame] | 2635 | } |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2636 | return getBitmapBlockLayout(false); |
| 2637 | } |
Fariborz Jahanian | c46b435 | 2012-10-27 21:10:38 +0000 | [diff] [blame] | 2638 | |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2639 | llvm::Constant *CGObjCCommonMac::BuildByrefLayout(CodeGen::CodeGenModule &CGM, |
| 2640 | QualType T) { |
| 2641 | assert(CGM.getLangOpts().getGC() == LangOptions::NonGC); |
| 2642 | assert(!T->isArrayType() && "__block array variable should not be caught"); |
| 2643 | CharUnits fieldOffset; |
| 2644 | RunSkipBlockVars.clear(); |
| 2645 | bool hasUnion = false; |
| 2646 | if (const RecordType *record = T->getAs<RecordType>()) { |
| 2647 | BuildRCBlockVarRecordLayout(record, fieldOffset, hasUnion, true /*ByrefLayout */); |
| 2648 | llvm::Constant *Result = getBitmapBlockLayout(true); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2649 | if (isa<llvm::ConstantInt>(Result)) |
| 2650 | Result = llvm::ConstantExpr::getIntToPtr(Result, CGM.Int8PtrTy); |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2651 | return Result; |
Fariborz Jahanian | c46b435 | 2012-10-27 21:10:38 +0000 | [diff] [blame] | 2652 | } |
Fariborz Jahanian | 3ca23d7 | 2012-11-14 17:15:51 +0000 | [diff] [blame] | 2653 | llvm::Constant *nullPtr = llvm::Constant::getNullValue(CGM.Int8PtrTy); |
| 2654 | return nullPtr; |
Fariborz Jahanian | c46b435 | 2012-10-27 21:10:38 +0000 | [diff] [blame] | 2655 | } |
| 2656 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 2657 | llvm::Value *CGObjCMac::GenerateProtocolRef(CodeGenFunction &CGF, |
Daniel Dunbar | af2f62c | 2008-08-13 00:59:25 +0000 | [diff] [blame] | 2658 | const ObjCProtocolDecl *PD) { |
Daniel Dunbar | c67876d | 2008-09-04 04:33:15 +0000 | [diff] [blame] | 2659 | // FIXME: I don't understand why gcc generates this, or where it is |
Mike Stump | f5408fe | 2009-05-16 07:57:57 +0000 | [diff] [blame] | 2660 | // resolved. Investigate. Its also wasteful to look this up over and over. |
Daniel Dunbar | c67876d | 2008-09-04 04:33:15 +0000 | [diff] [blame] | 2661 | LazySymbols.insert(&CGM.getContext().Idents.get("Protocol")); |
| 2662 | |
Owen Anderson | 3c4972d | 2009-07-29 18:54:39 +0000 | [diff] [blame] | 2663 | return llvm::ConstantExpr::getBitCast(GetProtocolRef(PD), |
Douglas Gregor | 4c86fdb | 2012-01-17 18:36:30 +0000 | [diff] [blame] | 2664 | ObjCTypes.getExternalProtocolPtrTy()); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 2665 | } |
| 2666 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 2667 | void CGObjCCommonMac::GenerateProtocol(const ObjCProtocolDecl *PD) { |
Mike Stump | f5408fe | 2009-05-16 07:57:57 +0000 | [diff] [blame] | 2668 | // FIXME: We shouldn't need this, the protocol decl should contain enough |
| 2669 | // information to tell us whether this was a declaration or a definition. |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 2670 | DefinedProtocols.insert(PD->getIdentifier()); |
| 2671 | |
| 2672 | // If we have generated a forward reference to this protocol, emit |
| 2673 | // it now. Otherwise do nothing, the protocol objects are lazily |
| 2674 | // emitted. |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2675 | if (Protocols.count(PD->getIdentifier())) |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 2676 | GetOrEmitProtocol(PD); |
| 2677 | } |
| 2678 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 2679 | llvm::Constant *CGObjCCommonMac::GetProtocolRef(const ObjCProtocolDecl *PD) { |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 2680 | if (DefinedProtocols.count(PD->getIdentifier())) |
| 2681 | return GetOrEmitProtocol(PD); |
Douglas Gregor | f968d83 | 2011-05-27 01:19:52 +0000 | [diff] [blame] | 2682 | |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 2683 | return GetOrEmitProtocolRef(PD); |
| 2684 | } |
| 2685 | |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2686 | llvm::Value *CGObjCCommonMac::EmitClassRefViaRuntime( |
| 2687 | CodeGenFunction &CGF, |
| 2688 | const ObjCInterfaceDecl *ID, |
| 2689 | ObjCCommonTypesHelper &ObjCTypes) { |
| 2690 | llvm::Constant *lookUpClassFn = ObjCTypes.getLookUpClassFn(); |
| 2691 | |
| 2692 | llvm::Value *className = |
| 2693 | CGF.CGM.GetAddrOfConstantCString(ID->getObjCRuntimeNameAsString()) |
| 2694 | .getPointer(); |
| 2695 | ASTContext &ctx = CGF.CGM.getContext(); |
| 2696 | className = |
| 2697 | CGF.Builder.CreateBitCast(className, |
| 2698 | CGF.ConvertType( |
| 2699 | ctx.getPointerType(ctx.CharTy.withConst()))); |
| 2700 | llvm::CallInst *call = CGF.Builder.CreateCall(lookUpClassFn, className); |
| 2701 | call->setDoesNotThrow(); |
| 2702 | return call; |
| 2703 | } |
| 2704 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2705 | /* |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2706 | // Objective-C 1.0 extensions |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2707 | struct _objc_protocol { |
| 2708 | struct _objc_protocol_extension *isa; |
| 2709 | char *protocol_name; |
| 2710 | struct _objc_protocol_list *protocol_list; |
| 2711 | struct _objc__method_prototype_list *instance_methods; |
| 2712 | struct _objc__method_prototype_list *class_methods |
| 2713 | }; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2714 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2715 | See EmitProtocolExtension(). |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2716 | */ |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 2717 | llvm::Constant *CGObjCMac::GetOrEmitProtocol(const ObjCProtocolDecl *PD) { |
John McCall | 50651b9 | 2012-03-30 21:29:05 +0000 | [diff] [blame] | 2718 | llvm::GlobalVariable *Entry = Protocols[PD->getIdentifier()]; |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 2719 | |
| 2720 | // Early exit if a defining object has already been generated. |
| 2721 | if (Entry && Entry->hasInitializer()) |
| 2722 | return Entry; |
| 2723 | |
Douglas Gregor | 1d784b2 | 2012-01-01 19:51:50 +0000 | [diff] [blame] | 2724 | // Use the protocol definition, if there is one. |
| 2725 | if (const ObjCProtocolDecl *Def = PD->getDefinition()) |
| 2726 | PD = Def; |
| 2727 | |
Daniel Dunbar | 242d4dc | 2008-08-25 06:02:07 +0000 | [diff] [blame] | 2728 | // FIXME: I don't understand why gcc generates this, or where it is |
Mike Stump | f5408fe | 2009-05-16 07:57:57 +0000 | [diff] [blame] | 2729 | // resolved. Investigate. Its also wasteful to look this up over and over. |
Daniel Dunbar | 242d4dc | 2008-08-25 06:02:07 +0000 | [diff] [blame] | 2730 | LazySymbols.insert(&CGM.getContext().Idents.get("Protocol")); |
| 2731 | |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 2732 | // Construct method lists. |
| 2733 | std::vector<llvm::Constant*> InstanceMethods, ClassMethods; |
| 2734 | std::vector<llvm::Constant*> OptInstanceMethods, OptClassMethods; |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 2735 | std::vector<llvm::Constant*> MethodTypesExt, OptMethodTypesExt; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2736 | for (const auto *MD : PD->instance_methods()) { |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 2737 | llvm::Constant *C = GetMethodDescriptionConstant(MD); |
Douglas Gregor | f968d83 | 2011-05-27 01:19:52 +0000 | [diff] [blame] | 2738 | if (!C) |
| 2739 | return GetOrEmitProtocolRef(PD); |
| 2740 | |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 2741 | if (MD->getImplementationControl() == ObjCMethodDecl::Optional) { |
| 2742 | OptInstanceMethods.push_back(C); |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 2743 | OptMethodTypesExt.push_back(GetMethodVarType(MD, true)); |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 2744 | } else { |
| 2745 | InstanceMethods.push_back(C); |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 2746 | MethodTypesExt.push_back(GetMethodVarType(MD, true)); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2747 | } |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 2748 | } |
| 2749 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2750 | for (const auto *MD : PD->class_methods()) { |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 2751 | llvm::Constant *C = GetMethodDescriptionConstant(MD); |
Douglas Gregor | f968d83 | 2011-05-27 01:19:52 +0000 | [diff] [blame] | 2752 | if (!C) |
| 2753 | return GetOrEmitProtocolRef(PD); |
| 2754 | |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 2755 | if (MD->getImplementationControl() == ObjCMethodDecl::Optional) { |
| 2756 | OptClassMethods.push_back(C); |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 2757 | OptMethodTypesExt.push_back(GetMethodVarType(MD, true)); |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 2758 | } else { |
| 2759 | ClassMethods.push_back(C); |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 2760 | MethodTypesExt.push_back(GetMethodVarType(MD, true)); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2761 | } |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 2762 | } |
| 2763 | |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 2764 | MethodTypesExt.insert(MethodTypesExt.end(), |
| 2765 | OptMethodTypesExt.begin(), OptMethodTypesExt.end()); |
| 2766 | |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 2767 | llvm::Constant *Values[] = { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 2768 | EmitProtocolExtension(PD, OptInstanceMethods, OptClassMethods, |
| 2769 | MethodTypesExt), |
| 2770 | GetClassName(PD->getObjCRuntimeNameAsString()), |
| 2771 | EmitProtocolList("OBJC_PROTOCOL_REFS_" + PD->getName(), |
| 2772 | PD->protocol_begin(), PD->protocol_end()), |
| 2773 | EmitMethodDescList("OBJC_PROTOCOL_INSTANCE_METHODS_" + PD->getName(), |
| 2774 | "__OBJC,__cat_inst_meth,regular,no_dead_strip", |
| 2775 | InstanceMethods), |
| 2776 | EmitMethodDescList("OBJC_PROTOCOL_CLASS_METHODS_" + PD->getName(), |
| 2777 | "__OBJC,__cat_cls_meth,regular,no_dead_strip", |
| 2778 | ClassMethods)}; |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 2779 | llvm::Constant *Init = llvm::ConstantStruct::get(ObjCTypes.ProtocolTy, |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2780 | Values); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2781 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2782 | if (Entry) { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2783 | // Already created, update the initializer. |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 2784 | assert(Entry->hasPrivateLinkage()); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2785 | Entry->setInitializer(Init); |
| 2786 | } else { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 2787 | Entry = new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.ProtocolTy, |
| 2788 | false, llvm::GlobalValue::PrivateLinkage, |
| 2789 | Init, "OBJC_PROTOCOL_" + PD->getName()); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2790 | Entry->setSection("__OBJC,__protocol,regular,no_dead_strip"); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2791 | // FIXME: Is this necessary? Why only for protocol? |
| 2792 | Entry->setAlignment(4); |
John McCall | 50651b9 | 2012-03-30 21:29:05 +0000 | [diff] [blame] | 2793 | |
| 2794 | Protocols[PD->getIdentifier()] = Entry; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2795 | } |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2796 | CGM.addCompilerUsedGlobal(Entry); |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 2797 | |
| 2798 | return Entry; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2799 | } |
| 2800 | |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 2801 | llvm::Constant *CGObjCMac::GetOrEmitProtocolRef(const ObjCProtocolDecl *PD) { |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2802 | llvm::GlobalVariable *&Entry = Protocols[PD->getIdentifier()]; |
| 2803 | |
| 2804 | if (!Entry) { |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 2805 | // We use the initializer as a marker of whether this is a forward |
| 2806 | // reference or not. At module finalization we add the empty |
| 2807 | // contents for protocols which were referenced but never defined. |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 2808 | Entry = new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.ProtocolTy, |
| 2809 | false, llvm::GlobalValue::PrivateLinkage, |
| 2810 | nullptr, "OBJC_PROTOCOL_" + PD->getName()); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2811 | Entry->setSection("__OBJC,__protocol,regular,no_dead_strip"); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2812 | // FIXME: Is this necessary? Why only for protocol? |
| 2813 | Entry->setAlignment(4); |
| 2814 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2815 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2816 | return Entry; |
| 2817 | } |
| 2818 | |
| 2819 | /* |
| 2820 | struct _objc_protocol_extension { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2821 | uint32_t size; |
| 2822 | struct objc_method_description_list *optional_instance_methods; |
| 2823 | struct objc_method_description_list *optional_class_methods; |
| 2824 | struct objc_property_list *instance_properties; |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 2825 | const char ** extendedMethodTypes; |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2826 | struct objc_property_list *class_properties; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2827 | }; |
| 2828 | */ |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 2829 | llvm::Constant * |
| 2830 | CGObjCMac::EmitProtocolExtension(const ObjCProtocolDecl *PD, |
Bill Wendling | bb02855 | 2012-02-07 09:25:09 +0000 | [diff] [blame] | 2831 | ArrayRef<llvm::Constant*> OptInstanceMethods, |
| 2832 | ArrayRef<llvm::Constant*> OptClassMethods, |
| 2833 | ArrayRef<llvm::Constant*> MethodTypesExt) { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2834 | uint64_t Size = |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 2835 | CGM.getDataLayout().getTypeAllocSize(ObjCTypes.ProtocolExtensionTy); |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 2836 | llvm::Constant *Values[] = { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 2837 | llvm::ConstantInt::get(ObjCTypes.IntTy, Size), |
| 2838 | EmitMethodDescList("OBJC_PROTOCOL_INSTANCE_METHODS_OPT_" + PD->getName(), |
| 2839 | "__OBJC,__cat_inst_meth,regular,no_dead_strip", |
| 2840 | OptInstanceMethods), |
| 2841 | EmitMethodDescList("OBJC_PROTOCOL_CLASS_METHODS_OPT_" + PD->getName(), |
| 2842 | "__OBJC,__cat_cls_meth,regular,no_dead_strip", |
| 2843 | OptClassMethods), |
| 2844 | EmitPropertyList("OBJC_$_PROP_PROTO_LIST_" + PD->getName(), nullptr, PD, |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2845 | ObjCTypes, false), |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 2846 | EmitProtocolMethodTypes("OBJC_PROTOCOL_METHOD_TYPES_" + PD->getName(), |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2847 | MethodTypesExt, ObjCTypes), |
| 2848 | EmitPropertyList("OBJC_$_CLASS_PROP_PROTO_LIST_" + PD->getName(), nullptr, |
| 2849 | PD, ObjCTypes, true)}; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2850 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 2851 | // Return null if no extension bits are used. |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2852 | if (Values[1]->isNullValue() && Values[2]->isNullValue() && |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2853 | Values[3]->isNullValue() && Values[4]->isNullValue() && |
| 2854 | Values[5]->isNullValue()) |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 2855 | return llvm::Constant::getNullValue(ObjCTypes.ProtocolExtensionPtrTy); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2856 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2857 | llvm::Constant *Init = |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 2858 | llvm::ConstantStruct::get(ObjCTypes.ProtocolExtensionTy, Values); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2859 | |
Daniel Dunbar | 63c5b50 | 2009-03-09 21:49:58 +0000 | [diff] [blame] | 2860 | // No special section, but goes in llvm.used |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 2861 | return CreateMetadataVar("\01l_OBJC_PROTOCOLEXT_" + PD->getName(), Init, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2862 | StringRef(), CGM.getPointerAlign(), true); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2863 | } |
| 2864 | |
| 2865 | /* |
| 2866 | struct objc_protocol_list { |
Bill Wendling | 3964e62 | 2012-02-09 22:16:49 +0000 | [diff] [blame] | 2867 | struct objc_protocol_list *next; |
| 2868 | long count; |
| 2869 | Protocol *list[]; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2870 | }; |
| 2871 | */ |
Daniel Dunbar | dbc93370 | 2008-08-21 21:57:41 +0000 | [diff] [blame] | 2872 | llvm::Constant * |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 2873 | CGObjCMac::EmitProtocolList(Twine Name, |
Daniel Dunbar | dbc93370 | 2008-08-21 21:57:41 +0000 | [diff] [blame] | 2874 | ObjCProtocolDecl::protocol_iterator begin, |
| 2875 | ObjCProtocolDecl::protocol_iterator end) { |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 2876 | SmallVector<llvm::Constant *, 16> ProtocolRefs; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2877 | |
Daniel Dunbar | dbc93370 | 2008-08-21 21:57:41 +0000 | [diff] [blame] | 2878 | for (; begin != end; ++begin) |
| 2879 | ProtocolRefs.push_back(GetProtocolRef(*begin)); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2880 | |
| 2881 | // Just return null for empty protocol lists |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2882 | if (ProtocolRefs.empty()) |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 2883 | return llvm::Constant::getNullValue(ObjCTypes.ProtocolListPtrTy); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2884 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 2885 | // This list is null terminated. |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 2886 | ProtocolRefs.push_back(llvm::Constant::getNullValue(ObjCTypes.ProtocolPtrTy)); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2887 | |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 2888 | llvm::Constant *Values[3]; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 2889 | // This field is only used by the runtime. |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 2890 | Values[0] = llvm::Constant::getNullValue(ObjCTypes.ProtocolListPtrTy); |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 2891 | Values[1] = llvm::ConstantInt::get(ObjCTypes.LongTy, |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2892 | ProtocolRefs.size() - 1); |
| 2893 | Values[2] = |
| 2894 | llvm::ConstantArray::get(llvm::ArrayType::get(ObjCTypes.ProtocolPtrTy, |
| 2895 | ProtocolRefs.size()), |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2896 | ProtocolRefs); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2897 | |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 2898 | llvm::Constant *Init = llvm::ConstantStruct::getAnon(Values); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2899 | llvm::GlobalVariable *GV = |
Daniel Dunbar | 63c5b50 | 2009-03-09 21:49:58 +0000 | [diff] [blame] | 2900 | CreateMetadataVar(Name, Init, "__OBJC,__cat_cls_meth,regular,no_dead_strip", |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2901 | CGM.getPointerAlign(), false); |
Owen Anderson | 3c4972d | 2009-07-29 18:54:39 +0000 | [diff] [blame] | 2902 | return llvm::ConstantExpr::getBitCast(GV, ObjCTypes.ProtocolListPtrTy); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2903 | } |
| 2904 | |
Bill Wendling | bb02855 | 2012-02-07 09:25:09 +0000 | [diff] [blame] | 2905 | void CGObjCCommonMac:: |
| 2906 | PushProtocolProperties(llvm::SmallPtrSet<const IdentifierInfo*,16> &PropertySet, |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 2907 | SmallVectorImpl<llvm::Constant *> &Properties, |
Bill Wendling | bb02855 | 2012-02-07 09:25:09 +0000 | [diff] [blame] | 2908 | const Decl *Container, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2909 | const ObjCProtocolDecl *Proto, |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2910 | const ObjCCommonTypesHelper &ObjCTypes, |
| 2911 | bool IsClassProperty) { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2912 | for (const auto *P : Proto->protocols()) |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2913 | PushProtocolProperties(PropertySet, Properties, Container, P, ObjCTypes, |
| 2914 | IsClassProperty); |
| 2915 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2916 | for (const auto *PD : Proto->properties()) { |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2917 | if (IsClassProperty != PD->isClassProperty()) |
| 2918 | continue; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 2919 | if (!PropertySet.insert(PD->getIdentifier()).second) |
Fariborz Jahanian | 191dcd7 | 2009-12-12 21:26:21 +0000 | [diff] [blame] | 2920 | continue; |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 2921 | llvm::Constant *Prop[] = { |
| 2922 | GetPropertyName(PD->getIdentifier()), |
| 2923 | GetPropertyTypeString(PD, Container) |
| 2924 | }; |
Fariborz Jahanian | 191dcd7 | 2009-12-12 21:26:21 +0000 | [diff] [blame] | 2925 | Properties.push_back(llvm::ConstantStruct::get(ObjCTypes.PropertyTy, Prop)); |
| 2926 | } |
| 2927 | } |
| 2928 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 2929 | /* |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 2930 | struct _objc_property { |
Bill Wendling | 3964e62 | 2012-02-09 22:16:49 +0000 | [diff] [blame] | 2931 | const char * const name; |
| 2932 | const char * const attributes; |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 2933 | }; |
| 2934 | |
| 2935 | struct _objc_property_list { |
Bill Wendling | 3964e62 | 2012-02-09 22:16:49 +0000 | [diff] [blame] | 2936 | uint32_t entsize; // sizeof (struct _objc_property) |
| 2937 | uint32_t prop_count; |
| 2938 | struct _objc_property[prop_count]; |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 2939 | }; |
| 2940 | */ |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 2941 | llvm::Constant *CGObjCCommonMac::EmitPropertyList(Twine Name, |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2942 | const Decl *Container, |
| 2943 | const ObjCContainerDecl *OCD, |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2944 | const ObjCCommonTypesHelper &ObjCTypes, |
| 2945 | bool IsClassProperty) { |
| 2946 | if (IsClassProperty) { |
| 2947 | // Make this entry NULL for OS X with deployment target < 10.11, for iOS |
| 2948 | // with deployment target < 9.0. |
| 2949 | const llvm::Triple &Triple = CGM.getTarget().getTriple(); |
| 2950 | if ((Triple.isMacOSX() && Triple.isMacOSXVersionLT(10, 11)) || |
| 2951 | (Triple.isiOS() && Triple.isOSVersionLT(9))) |
| 2952 | return llvm::Constant::getNullValue(ObjCTypes.PropertyListPtrTy); |
| 2953 | } |
| 2954 | |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 2955 | SmallVector<llvm::Constant *, 16> Properties; |
Fariborz Jahanian | 191dcd7 | 2009-12-12 21:26:21 +0000 | [diff] [blame] | 2956 | llvm::SmallPtrSet<const IdentifierInfo*, 16> PropertySet; |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2957 | |
| 2958 | auto AddProperty = [&](const ObjCPropertyDecl *PD) { |
| 2959 | llvm::Constant *Prop[] = {GetPropertyName(PD->getIdentifier()), |
| 2960 | GetPropertyTypeString(PD, Container)}; |
| 2961 | Properties.push_back(llvm::ConstantStruct::get(ObjCTypes.PropertyTy, Prop)); |
| 2962 | }; |
| 2963 | if (const ObjCInterfaceDecl *OID = dyn_cast<ObjCInterfaceDecl>(OCD)) |
| 2964 | for (const ObjCCategoryDecl *ClassExt : OID->known_extensions()) |
| 2965 | for (auto *PD : ClassExt->properties()) { |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2966 | if (IsClassProperty != PD->isClassProperty()) |
| 2967 | continue; |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2968 | PropertySet.insert(PD->getIdentifier()); |
| 2969 | AddProperty(PD); |
| 2970 | } |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2971 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2972 | for (const auto *PD : OCD->properties()) { |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2973 | if (IsClassProperty != PD->isClassProperty()) |
| 2974 | continue; |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2975 | // Don't emit duplicate metadata for properties that were already in a |
| 2976 | // class extension. |
| 2977 | if (!PropertySet.insert(PD->getIdentifier()).second) |
| 2978 | continue; |
| 2979 | AddProperty(PD); |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 2980 | } |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 2981 | |
Fariborz Jahanian | 6afbdf5 | 2010-06-22 16:33:55 +0000 | [diff] [blame] | 2982 | if (const ObjCInterfaceDecl *OID = dyn_cast<ObjCInterfaceDecl>(OCD)) { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2983 | for (const auto *P : OID->all_referenced_protocols()) |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2984 | PushProtocolProperties(PropertySet, Properties, Container, P, ObjCTypes, |
| 2985 | IsClassProperty); |
Fariborz Jahanian | 6afbdf5 | 2010-06-22 16:33:55 +0000 | [diff] [blame] | 2986 | } |
| 2987 | else if (const ObjCCategoryDecl *CD = dyn_cast<ObjCCategoryDecl>(OCD)) { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 2988 | for (const auto *P : CD->protocols()) |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 2989 | PushProtocolProperties(PropertySet, Properties, Container, P, ObjCTypes, |
| 2990 | IsClassProperty); |
Fariborz Jahanian | 6afbdf5 | 2010-06-22 16:33:55 +0000 | [diff] [blame] | 2991 | } |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 2992 | |
| 2993 | // Return null for empty list. |
| 2994 | if (Properties.empty()) |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 2995 | return llvm::Constant::getNullValue(ObjCTypes.PropertyListPtrTy); |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 2996 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 2997 | unsigned PropertySize = |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 2998 | CGM.getDataLayout().getTypeAllocSize(ObjCTypes.PropertyTy); |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 2999 | llvm::Constant *Values[3]; |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 3000 | Values[0] = llvm::ConstantInt::get(ObjCTypes.IntTy, PropertySize); |
| 3001 | Values[1] = llvm::ConstantInt::get(ObjCTypes.IntTy, Properties.size()); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3002 | llvm::ArrayType *AT = llvm::ArrayType::get(ObjCTypes.PropertyTy, |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 3003 | Properties.size()); |
Owen Anderson | 7db6d83 | 2009-07-28 18:33:04 +0000 | [diff] [blame] | 3004 | Values[2] = llvm::ConstantArray::get(AT, Properties); |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 3005 | llvm::Constant *Init = llvm::ConstantStruct::getAnon(Values); |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 3006 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3007 | llvm::GlobalVariable *GV = |
| 3008 | CreateMetadataVar(Name, Init, |
| 3009 | (ObjCABI == 2) ? "__DATA, __objc_const" : |
Daniel Dunbar | 0bf2199 | 2009-04-15 02:56:18 +0000 | [diff] [blame] | 3010 | "__OBJC,__property,regular,no_dead_strip", |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3011 | CGM.getPointerAlign(), |
Daniel Dunbar | 0bf2199 | 2009-04-15 02:56:18 +0000 | [diff] [blame] | 3012 | true); |
Owen Anderson | 3c4972d | 2009-07-29 18:54:39 +0000 | [diff] [blame] | 3013 | return llvm::ConstantExpr::getBitCast(GV, ObjCTypes.PropertyListPtrTy); |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 3014 | } |
| 3015 | |
Bill Wendling | bb02855 | 2012-02-07 09:25:09 +0000 | [diff] [blame] | 3016 | llvm::Constant * |
| 3017 | CGObjCCommonMac::EmitProtocolMethodTypes(Twine Name, |
| 3018 | ArrayRef<llvm::Constant*> MethodTypes, |
| 3019 | const ObjCCommonTypesHelper &ObjCTypes) { |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 3020 | // Return null for empty list. |
| 3021 | if (MethodTypes.empty()) |
| 3022 | return llvm::Constant::getNullValue(ObjCTypes.Int8PtrPtrTy); |
| 3023 | |
| 3024 | llvm::ArrayType *AT = llvm::ArrayType::get(ObjCTypes.Int8PtrTy, |
| 3025 | MethodTypes.size()); |
| 3026 | llvm::Constant *Init = llvm::ConstantArray::get(AT, MethodTypes); |
| 3027 | |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 3028 | llvm::GlobalVariable *GV = CreateMetadataVar( |
| 3029 | Name, Init, (ObjCABI == 2) ? "__DATA, __objc_const" : StringRef(), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3030 | CGM.getPointerAlign(), true); |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 3031 | return llvm::ConstantExpr::getBitCast(GV, ObjCTypes.Int8PtrPtrTy); |
| 3032 | } |
| 3033 | |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 3034 | /* |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 3035 | struct objc_method_description_list { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3036 | int count; |
| 3037 | struct objc_method_description list[]; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 3038 | }; |
| 3039 | */ |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 3040 | llvm::Constant * |
| 3041 | CGObjCMac::GetMethodDescriptionConstant(const ObjCMethodDecl *MD) { |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 3042 | llvm::Constant *Desc[] = { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3043 | llvm::ConstantExpr::getBitCast(GetMethodVarName(MD->getSelector()), |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 3044 | ObjCTypes.SelectorPtrTy), |
| 3045 | GetMethodVarType(MD) |
| 3046 | }; |
Douglas Gregor | f968d83 | 2011-05-27 01:19:52 +0000 | [diff] [blame] | 3047 | if (!Desc[1]) |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 3048 | return nullptr; |
| 3049 | |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 3050 | return llvm::ConstantStruct::get(ObjCTypes.MethodDescriptionTy, |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 3051 | Desc); |
| 3052 | } |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 3053 | |
Bill Wendling | bb02855 | 2012-02-07 09:25:09 +0000 | [diff] [blame] | 3054 | llvm::Constant * |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 3055 | CGObjCMac::EmitMethodDescList(Twine Name, StringRef Section, |
| 3056 | ArrayRef<llvm::Constant *> Methods) { |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 3057 | // Return null for empty list. |
| 3058 | if (Methods.empty()) |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 3059 | return llvm::Constant::getNullValue(ObjCTypes.MethodDescriptionListPtrTy); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 3060 | |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 3061 | llvm::Constant *Values[2]; |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 3062 | Values[0] = llvm::ConstantInt::get(ObjCTypes.IntTy, Methods.size()); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3063 | llvm::ArrayType *AT = llvm::ArrayType::get(ObjCTypes.MethodDescriptionTy, |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 3064 | Methods.size()); |
Owen Anderson | 7db6d83 | 2009-07-28 18:33:04 +0000 | [diff] [blame] | 3065 | Values[1] = llvm::ConstantArray::get(AT, Methods); |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 3066 | llvm::Constant *Init = llvm::ConstantStruct::getAnon(Values); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 3067 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3068 | llvm::GlobalVariable *GV = |
| 3069 | CreateMetadataVar(Name, Init, Section, CGM.getPointerAlign(), true); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3070 | return llvm::ConstantExpr::getBitCast(GV, |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 3071 | ObjCTypes.MethodDescriptionListPtrTy); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 3072 | } |
| 3073 | |
Daniel Dunbar | 86e253a | 2008-08-22 20:34:54 +0000 | [diff] [blame] | 3074 | /* |
| 3075 | struct _objc_category { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3076 | char *category_name; |
| 3077 | char *class_name; |
| 3078 | struct _objc_method_list *instance_methods; |
| 3079 | struct _objc_method_list *class_methods; |
| 3080 | struct _objc_protocol_list *protocols; |
| 3081 | uint32_t size; // <rdar://4585769> |
| 3082 | struct _objc_property_list *instance_properties; |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 3083 | struct _objc_property_list *class_properties; |
Daniel Dunbar | 86e253a | 2008-08-22 20:34:54 +0000 | [diff] [blame] | 3084 | }; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3085 | */ |
Daniel Dunbar | 7ded7f4 | 2008-08-15 22:20:32 +0000 | [diff] [blame] | 3086 | void CGObjCMac::GenerateCategory(const ObjCCategoryImplDecl *OCD) { |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 3087 | unsigned Size = CGM.getDataLayout().getTypeAllocSize(ObjCTypes.CategoryTy); |
Daniel Dunbar | 86e253a | 2008-08-22 20:34:54 +0000 | [diff] [blame] | 3088 | |
Mike Stump | f5408fe | 2009-05-16 07:57:57 +0000 | [diff] [blame] | 3089 | // FIXME: This is poor design, the OCD should have a pointer to the category |
| 3090 | // decl. Additionally, note that Category can be null for the @implementation |
| 3091 | // w/o an @interface case. Sema should just create one for us as it does for |
| 3092 | // @implementation so everyone else can live life under a clear blue sky. |
Daniel Dunbar | 86e253a | 2008-08-22 20:34:54 +0000 | [diff] [blame] | 3093 | const ObjCInterfaceDecl *Interface = OCD->getClassInterface(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3094 | const ObjCCategoryDecl *Category = |
Daniel Dunbar | 86e2f40 | 2008-08-26 23:03:11 +0000 | [diff] [blame] | 3095 | Interface->FindCategoryDeclaration(OCD->getIdentifier()); |
Daniel Dunbar | 9c29bf5 | 2009-10-18 20:48:59 +0000 | [diff] [blame] | 3096 | |
Dylan Noblesmith | f7ccbad | 2012-02-05 02:13:05 +0000 | [diff] [blame] | 3097 | SmallString<256> ExtName; |
Daniel Dunbar | 9c29bf5 | 2009-10-18 20:48:59 +0000 | [diff] [blame] | 3098 | llvm::raw_svector_ostream(ExtName) << Interface->getName() << '_' |
| 3099 | << OCD->getName(); |
Daniel Dunbar | 86e253a | 2008-08-22 20:34:54 +0000 | [diff] [blame] | 3100 | |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 3101 | SmallVector<llvm::Constant *, 16> InstanceMethods, ClassMethods; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3102 | for (const auto *I : OCD->instance_methods()) |
Daniel Dunbar | c45ef60 | 2008-08-26 21:51:14 +0000 | [diff] [blame] | 3103 | // Instance methods should always be defined. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3104 | InstanceMethods.push_back(GetMethodConstant(I)); |
| 3105 | |
| 3106 | for (const auto *I : OCD->class_methods()) |
Daniel Dunbar | c45ef60 | 2008-08-26 21:51:14 +0000 | [diff] [blame] | 3107 | // Class methods should always be defined. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3108 | ClassMethods.push_back(GetMethodConstant(I)); |
Daniel Dunbar | c45ef60 | 2008-08-26 21:51:14 +0000 | [diff] [blame] | 3109 | |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 3110 | llvm::Constant *Values[8]; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3111 | Values[0] = GetClassName(OCD->getName()); |
| 3112 | Values[1] = GetClassName(Interface->getObjCRuntimeNameAsString()); |
Fariborz Jahanian | 679cd7f | 2009-04-29 20:40:05 +0000 | [diff] [blame] | 3113 | LazySymbols.insert(Interface->getIdentifier()); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3114 | Values[2] = EmitMethodList("OBJC_CATEGORY_INSTANCE_METHODS_" + ExtName.str(), |
| 3115 | "__OBJC,__cat_inst_meth,regular,no_dead_strip", |
| 3116 | InstanceMethods); |
| 3117 | Values[3] = EmitMethodList("OBJC_CATEGORY_CLASS_METHODS_" + ExtName.str(), |
| 3118 | "__OBJC,__cat_cls_meth,regular,no_dead_strip", |
| 3119 | ClassMethods); |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 3120 | if (Category) { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3121 | Values[4] = |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3122 | EmitProtocolList("OBJC_CATEGORY_PROTOCOLS_" + ExtName.str(), |
| 3123 | Category->protocol_begin(), Category->protocol_end()); |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 3124 | } else { |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 3125 | Values[4] = llvm::Constant::getNullValue(ObjCTypes.ProtocolListPtrTy); |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 3126 | } |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 3127 | Values[5] = llvm::ConstantInt::get(ObjCTypes.IntTy, Size); |
Daniel Dunbar | 86e2f40 | 2008-08-26 23:03:11 +0000 | [diff] [blame] | 3128 | |
| 3129 | // If there is no category @interface then there can be no properties. |
| 3130 | if (Category) { |
Daniel Dunbar | 9c29bf5 | 2009-10-18 20:48:59 +0000 | [diff] [blame] | 3131 | Values[6] = EmitPropertyList("\01l_OBJC_$_PROP_LIST_" + ExtName.str(), |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 3132 | OCD, Category, ObjCTypes, false); |
| 3133 | Values[7] = EmitPropertyList("\01l_OBJC_$_CLASS_PROP_LIST_" + ExtName.str(), |
| 3134 | OCD, Category, ObjCTypes, true); |
Daniel Dunbar | 86e2f40 | 2008-08-26 23:03:11 +0000 | [diff] [blame] | 3135 | } else { |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 3136 | Values[6] = llvm::Constant::getNullValue(ObjCTypes.PropertyListPtrTy); |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 3137 | Values[7] = llvm::Constant::getNullValue(ObjCTypes.PropertyListPtrTy); |
Daniel Dunbar | 86e2f40 | 2008-08-26 23:03:11 +0000 | [diff] [blame] | 3138 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3139 | |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 3140 | llvm::Constant *Init = llvm::ConstantStruct::get(ObjCTypes.CategoryTy, |
Daniel Dunbar | 86e253a | 2008-08-22 20:34:54 +0000 | [diff] [blame] | 3141 | Values); |
| 3142 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3143 | llvm::GlobalVariable *GV = |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3144 | CreateMetadataVar("OBJC_CATEGORY_" + ExtName.str(), Init, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3145 | "__OBJC,__category,regular,no_dead_strip", |
| 3146 | CGM.getPointerAlign(), true); |
Daniel Dunbar | 86e253a | 2008-08-22 20:34:54 +0000 | [diff] [blame] | 3147 | DefinedCategories.push_back(GV); |
Fariborz Jahanian | b9c5b3d | 2010-06-21 22:05:18 +0000 | [diff] [blame] | 3148 | DefinedCategoryNames.insert(ExtName.str()); |
Fariborz Jahanian | 64089ce | 2011-04-22 22:02:28 +0000 | [diff] [blame] | 3149 | // method definition entries must be clear for next implementation. |
| 3150 | MethodDefinitions.clear(); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 3151 | } |
| 3152 | |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 3153 | enum FragileClassFlags { |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3154 | /// Apparently: is not a meta-class. |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 3155 | FragileABI_Class_Factory = 0x00001, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3156 | |
| 3157 | /// Is a meta-class. |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 3158 | FragileABI_Class_Meta = 0x00002, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3159 | |
| 3160 | /// Has a non-trivial constructor or destructor. |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 3161 | FragileABI_Class_HasCXXStructors = 0x02000, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3162 | |
| 3163 | /// Has hidden visibility. |
| 3164 | FragileABI_Class_Hidden = 0x20000, |
| 3165 | |
| 3166 | /// Class implementation was compiled under ARC. |
| 3167 | FragileABI_Class_CompiledByARC = 0x04000000, |
| 3168 | |
| 3169 | /// Class implementation was compiled under MRC and has MRC weak ivars. |
| 3170 | /// Exclusive with CompiledByARC. |
| 3171 | FragileABI_Class_HasMRCWeakIvars = 0x08000000, |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 3172 | }; |
| 3173 | |
| 3174 | enum NonFragileClassFlags { |
| 3175 | /// Is a meta-class. |
| 3176 | NonFragileABI_Class_Meta = 0x00001, |
| 3177 | |
| 3178 | /// Is a root class. |
| 3179 | NonFragileABI_Class_Root = 0x00002, |
| 3180 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3181 | /// Has a non-trivial constructor or destructor. |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 3182 | NonFragileABI_Class_HasCXXStructors = 0x00004, |
| 3183 | |
| 3184 | /// Has hidden visibility. |
| 3185 | NonFragileABI_Class_Hidden = 0x00010, |
| 3186 | |
| 3187 | /// Has the exception attribute. |
| 3188 | NonFragileABI_Class_Exception = 0x00020, |
| 3189 | |
| 3190 | /// (Obsolete) ARC-specific: this class has a .release_ivars method |
| 3191 | NonFragileABI_Class_HasIvarReleaser = 0x00040, |
| 3192 | |
| 3193 | /// Class implementation was compiled under ARC. |
John McCall | b03527a | 2012-10-17 04:53:31 +0000 | [diff] [blame] | 3194 | NonFragileABI_Class_CompiledByARC = 0x00080, |
| 3195 | |
| 3196 | /// Class has non-trivial destructors, but zero-initialization is okay. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3197 | NonFragileABI_Class_HasCXXDestructorOnly = 0x00100, |
| 3198 | |
| 3199 | /// Class implementation was compiled under MRC and has MRC weak ivars. |
| 3200 | /// Exclusive with CompiledByARC. |
| 3201 | NonFragileABI_Class_HasMRCWeakIvars = 0x00200, |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3202 | }; |
| 3203 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3204 | static bool hasWeakMember(QualType type) { |
| 3205 | if (type.getObjCLifetime() == Qualifiers::OCL_Weak) { |
| 3206 | return true; |
| 3207 | } |
| 3208 | |
| 3209 | if (auto recType = type->getAs<RecordType>()) { |
| 3210 | for (auto field : recType->getDecl()->fields()) { |
| 3211 | if (hasWeakMember(field->getType())) |
| 3212 | return true; |
| 3213 | } |
| 3214 | } |
| 3215 | |
| 3216 | return false; |
| 3217 | } |
| 3218 | |
| 3219 | /// For compatibility, we only want to set the "HasMRCWeakIvars" flag |
| 3220 | /// (and actually fill in a layout string) if we really do have any |
| 3221 | /// __weak ivars. |
| 3222 | static bool hasMRCWeakIvars(CodeGenModule &CGM, |
| 3223 | const ObjCImplementationDecl *ID) { |
| 3224 | if (!CGM.getLangOpts().ObjCWeak) return false; |
| 3225 | assert(CGM.getLangOpts().getGC() == LangOptions::NonGC); |
| 3226 | |
| 3227 | for (const ObjCIvarDecl *ivar = |
| 3228 | ID->getClassInterface()->all_declared_ivar_begin(); |
| 3229 | ivar; ivar = ivar->getNextIvar()) { |
| 3230 | if (hasWeakMember(ivar->getType())) |
| 3231 | return true; |
| 3232 | } |
| 3233 | |
| 3234 | return false; |
| 3235 | } |
| 3236 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3237 | /* |
| 3238 | struct _objc_class { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3239 | Class isa; |
| 3240 | Class super_class; |
| 3241 | const char *name; |
| 3242 | long version; |
| 3243 | long info; |
| 3244 | long instance_size; |
| 3245 | struct _objc_ivar_list *ivars; |
| 3246 | struct _objc_method_list *methods; |
| 3247 | struct _objc_cache *cache; |
| 3248 | struct _objc_protocol_list *protocols; |
| 3249 | // Objective-C 1.0 extensions (<rdr://4585769>) |
| 3250 | const char *ivar_layout; |
| 3251 | struct _objc_class_ext *ext; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3252 | }; |
| 3253 | |
| 3254 | See EmitClassExtension(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3255 | */ |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3256 | void CGObjCMac::GenerateClass(const ObjCImplementationDecl *ID) { |
Daniel Dunbar | 242d4dc | 2008-08-25 06:02:07 +0000 | [diff] [blame] | 3257 | DefinedSymbols.insert(ID->getIdentifier()); |
| 3258 | |
Chris Lattner | 8ec03f5 | 2008-11-24 03:54:41 +0000 | [diff] [blame] | 3259 | std::string ClassName = ID->getNameAsString(); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3260 | // FIXME: Gross |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3261 | ObjCInterfaceDecl *Interface = |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3262 | const_cast<ObjCInterfaceDecl*>(ID->getClassInterface()); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3263 | llvm::Constant *Protocols = |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3264 | EmitProtocolList("OBJC_CLASS_PROTOCOLS_" + ID->getName(), |
| 3265 | Interface->all_referenced_protocol_begin(), |
| 3266 | Interface->all_referenced_protocol_end()); |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 3267 | unsigned Flags = FragileABI_Class_Factory; |
John McCall | b03527a | 2012-10-17 04:53:31 +0000 | [diff] [blame] | 3268 | if (ID->hasNonZeroConstructors() || ID->hasDestructors()) |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 3269 | Flags |= FragileABI_Class_HasCXXStructors; |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3270 | |
| 3271 | bool hasMRCWeak = false; |
| 3272 | |
| 3273 | if (CGM.getLangOpts().ObjCAutoRefCount) |
| 3274 | Flags |= FragileABI_Class_CompiledByARC; |
| 3275 | else if ((hasMRCWeak = hasMRCWeakIvars(CGM, ID))) |
| 3276 | Flags |= FragileABI_Class_HasMRCWeakIvars; |
| 3277 | |
| 3278 | CharUnits Size = |
| 3279 | CGM.getContext().getASTObjCImplementationLayout(ID).getSize(); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3280 | |
| 3281 | // FIXME: Set CXX-structors flag. |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 3282 | if (ID->getClassInterface()->getVisibility() == HiddenVisibility) |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 3283 | Flags |= FragileABI_Class_Hidden; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3284 | |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 3285 | SmallVector<llvm::Constant *, 16> InstanceMethods, ClassMethods; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3286 | for (const auto *I : ID->instance_methods()) |
Daniel Dunbar | c45ef60 | 2008-08-26 21:51:14 +0000 | [diff] [blame] | 3287 | // Instance methods should always be defined. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3288 | InstanceMethods.push_back(GetMethodConstant(I)); |
| 3289 | |
| 3290 | for (const auto *I : ID->class_methods()) |
Daniel Dunbar | c45ef60 | 2008-08-26 21:51:14 +0000 | [diff] [blame] | 3291 | // Class methods should always be defined. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3292 | ClassMethods.push_back(GetMethodConstant(I)); |
Daniel Dunbar | c45ef60 | 2008-08-26 21:51:14 +0000 | [diff] [blame] | 3293 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3294 | for (const auto *PID : ID->property_impls()) { |
Daniel Dunbar | c45ef60 | 2008-08-26 21:51:14 +0000 | [diff] [blame] | 3295 | if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize) { |
| 3296 | ObjCPropertyDecl *PD = PID->getPropertyDecl(); |
| 3297 | |
| 3298 | if (ObjCMethodDecl *MD = PD->getGetterMethodDecl()) |
| 3299 | if (llvm::Constant *C = GetMethodConstant(MD)) |
| 3300 | InstanceMethods.push_back(C); |
| 3301 | if (ObjCMethodDecl *MD = PD->getSetterMethodDecl()) |
| 3302 | if (llvm::Constant *C = GetMethodConstant(MD)) |
| 3303 | InstanceMethods.push_back(C); |
| 3304 | } |
| 3305 | } |
| 3306 | |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 3307 | llvm::Constant *Values[12]; |
Daniel Dunbar | 5384b09 | 2009-05-03 08:56:52 +0000 | [diff] [blame] | 3308 | Values[ 0] = EmitMetaClass(ID, Protocols, ClassMethods); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3309 | if (ObjCInterfaceDecl *Super = Interface->getSuperClass()) { |
Daniel Dunbar | 242d4dc | 2008-08-25 06:02:07 +0000 | [diff] [blame] | 3310 | // Record a reference to the super class. |
| 3311 | LazySymbols.insert(Super->getIdentifier()); |
| 3312 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3313 | Values[ 1] = |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3314 | llvm::ConstantExpr::getBitCast(GetClassName(Super->getObjCRuntimeNameAsString()), |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3315 | ObjCTypes.ClassPtrTy); |
| 3316 | } else { |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 3317 | Values[ 1] = llvm::Constant::getNullValue(ObjCTypes.ClassPtrTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3318 | } |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3319 | Values[ 2] = GetClassName(ID->getObjCRuntimeNameAsString()); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3320 | // Version is always 0. |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 3321 | Values[ 3] = llvm::ConstantInt::get(ObjCTypes.LongTy, 0); |
| 3322 | Values[ 4] = llvm::ConstantInt::get(ObjCTypes.LongTy, Flags); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3323 | Values[ 5] = llvm::ConstantInt::get(ObjCTypes.LongTy, Size.getQuantity()); |
Fariborz Jahanian | 46b86c6 | 2009-01-28 19:12:34 +0000 | [diff] [blame] | 3324 | Values[ 6] = EmitIvarList(ID, false); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3325 | Values[7] = EmitMethodList("OBJC_INSTANCE_METHODS_" + ID->getName(), |
| 3326 | "__OBJC,__inst_meth,regular,no_dead_strip", |
| 3327 | InstanceMethods); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3328 | // cache is always NULL. |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 3329 | Values[ 8] = llvm::Constant::getNullValue(ObjCTypes.CachePtrTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3330 | Values[ 9] = Protocols; |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3331 | Values[10] = BuildStrongIvarLayout(ID, CharUnits::Zero(), Size); |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 3332 | Values[11] = EmitClassExtension(ID, Size, hasMRCWeak, |
| 3333 | false/*isClassProperty*/); |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 3334 | llvm::Constant *Init = llvm::ConstantStruct::get(ObjCTypes.ClassTy, |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3335 | Values); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3336 | std::string Name("OBJC_CLASS_"); |
Fariborz Jahanian | b0069ee | 2009-11-12 20:14:24 +0000 | [diff] [blame] | 3337 | Name += ClassName; |
| 3338 | const char *Section = "__OBJC,__class,regular,no_dead_strip"; |
| 3339 | // Check for a forward reference. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3340 | llvm::GlobalVariable *GV = CGM.getModule().getGlobalVariable(Name, true); |
Fariborz Jahanian | b0069ee | 2009-11-12 20:14:24 +0000 | [diff] [blame] | 3341 | if (GV) { |
| 3342 | assert(GV->getType()->getElementType() == ObjCTypes.ClassTy && |
| 3343 | "Forward metaclass reference has incorrect type."); |
Fariborz Jahanian | b0069ee | 2009-11-12 20:14:24 +0000 | [diff] [blame] | 3344 | GV->setInitializer(Init); |
| 3345 | GV->setSection(Section); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3346 | GV->setAlignment(CGM.getPointerAlign().getQuantity()); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3347 | CGM.addCompilerUsedGlobal(GV); |
| 3348 | } else |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3349 | GV = CreateMetadataVar(Name, Init, Section, CGM.getPointerAlign(), true); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3350 | DefinedClasses.push_back(GV); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3351 | ImplementedClasses.push_back(Interface); |
Fariborz Jahanian | 64089ce | 2011-04-22 22:02:28 +0000 | [diff] [blame] | 3352 | // method definition entries must be clear for next implementation. |
| 3353 | MethodDefinitions.clear(); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3354 | } |
| 3355 | |
| 3356 | llvm::Constant *CGObjCMac::EmitMetaClass(const ObjCImplementationDecl *ID, |
| 3357 | llvm::Constant *Protocols, |
Bill Wendling | bb02855 | 2012-02-07 09:25:09 +0000 | [diff] [blame] | 3358 | ArrayRef<llvm::Constant*> Methods) { |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 3359 | unsigned Flags = FragileABI_Class_Meta; |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 3360 | unsigned Size = CGM.getDataLayout().getTypeAllocSize(ObjCTypes.ClassTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3361 | |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 3362 | if (ID->getClassInterface()->getVisibility() == HiddenVisibility) |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 3363 | Flags |= FragileABI_Class_Hidden; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3364 | |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 3365 | llvm::Constant *Values[12]; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3366 | // The isa for the metaclass is the root of the hierarchy. |
| 3367 | const ObjCInterfaceDecl *Root = ID->getClassInterface(); |
| 3368 | while (const ObjCInterfaceDecl *Super = Root->getSuperClass()) |
| 3369 | Root = Super; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3370 | Values[ 0] = |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3371 | llvm::ConstantExpr::getBitCast(GetClassName(Root->getObjCRuntimeNameAsString()), |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3372 | ObjCTypes.ClassPtrTy); |
Daniel Dunbar | 86e253a | 2008-08-22 20:34:54 +0000 | [diff] [blame] | 3373 | // The super class for the metaclass is emitted as the name of the |
| 3374 | // super class. The runtime fixes this up to point to the |
| 3375 | // *metaclass* for the super class. |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3376 | if (ObjCInterfaceDecl *Super = ID->getClassInterface()->getSuperClass()) { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3377 | Values[ 1] = |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3378 | llvm::ConstantExpr::getBitCast(GetClassName(Super->getObjCRuntimeNameAsString()), |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3379 | ObjCTypes.ClassPtrTy); |
| 3380 | } else { |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 3381 | Values[ 1] = llvm::Constant::getNullValue(ObjCTypes.ClassPtrTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3382 | } |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3383 | Values[ 2] = GetClassName(ID->getObjCRuntimeNameAsString()); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3384 | // Version is always 0. |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 3385 | Values[ 3] = llvm::ConstantInt::get(ObjCTypes.LongTy, 0); |
| 3386 | Values[ 4] = llvm::ConstantInt::get(ObjCTypes.LongTy, Flags); |
| 3387 | Values[ 5] = llvm::ConstantInt::get(ObjCTypes.LongTy, Size); |
Fariborz Jahanian | 46b86c6 | 2009-01-28 19:12:34 +0000 | [diff] [blame] | 3388 | Values[ 6] = EmitIvarList(ID, true); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3389 | Values[7] = |
| 3390 | EmitMethodList("OBJC_CLASS_METHODS_" + ID->getNameAsString(), |
| 3391 | "__OBJC,__cls_meth,regular,no_dead_strip", Methods); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3392 | // cache is always NULL. |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 3393 | Values[ 8] = llvm::Constant::getNullValue(ObjCTypes.CachePtrTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3394 | Values[ 9] = Protocols; |
| 3395 | // ivar_layout for metaclass is always NULL. |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 3396 | Values[10] = llvm::Constant::getNullValue(ObjCTypes.Int8PtrTy); |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 3397 | // The class extension is used to store class properties for metaclasses. |
| 3398 | Values[11] = EmitClassExtension(ID, CharUnits::Zero(), false/*hasMRCWeak*/, |
| 3399 | true/*isClassProperty*/); |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 3400 | llvm::Constant *Init = llvm::ConstantStruct::get(ObjCTypes.ClassTy, |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3401 | Values); |
| 3402 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3403 | std::string Name("OBJC_METACLASS_"); |
Benjamin Kramer | 94be8ea | 2012-07-31 11:45:39 +0000 | [diff] [blame] | 3404 | Name += ID->getName(); |
Daniel Dunbar | f56f191 | 2008-08-25 08:19:24 +0000 | [diff] [blame] | 3405 | |
| 3406 | // Check for a forward reference. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3407 | llvm::GlobalVariable *GV = CGM.getModule().getGlobalVariable(Name, true); |
Daniel Dunbar | f56f191 | 2008-08-25 08:19:24 +0000 | [diff] [blame] | 3408 | if (GV) { |
| 3409 | assert(GV->getType()->getElementType() == ObjCTypes.ClassTy && |
| 3410 | "Forward metaclass reference has incorrect type."); |
Daniel Dunbar | f56f191 | 2008-08-25 08:19:24 +0000 | [diff] [blame] | 3411 | GV->setInitializer(Init); |
| 3412 | } else { |
Owen Anderson | 1c431b3 | 2009-07-08 19:05:04 +0000 | [diff] [blame] | 3413 | GV = new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.ClassTy, false, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3414 | llvm::GlobalValue::PrivateLinkage, |
Owen Anderson | 1c431b3 | 2009-07-08 19:05:04 +0000 | [diff] [blame] | 3415 | Init, Name); |
Daniel Dunbar | f56f191 | 2008-08-25 08:19:24 +0000 | [diff] [blame] | 3416 | } |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3417 | GV->setSection("__OBJC,__meta_class,regular,no_dead_strip"); |
Daniel Dunbar | 58a2912 | 2009-03-09 22:18:41 +0000 | [diff] [blame] | 3418 | GV->setAlignment(4); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3419 | CGM.addCompilerUsedGlobal(GV); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3420 | |
| 3421 | return GV; |
| 3422 | } |
| 3423 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3424 | llvm::Constant *CGObjCMac::EmitMetaClassRef(const ObjCInterfaceDecl *ID) { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3425 | std::string Name = "OBJC_METACLASS_" + ID->getNameAsString(); |
Daniel Dunbar | f56f191 | 2008-08-25 08:19:24 +0000 | [diff] [blame] | 3426 | |
Mike Stump | f5408fe | 2009-05-16 07:57:57 +0000 | [diff] [blame] | 3427 | // FIXME: Should we look these up somewhere other than the module. Its a bit |
| 3428 | // silly since we only generate these while processing an implementation, so |
| 3429 | // exactly one pointer would work if know when we entered/exitted an |
| 3430 | // implementation block. |
Daniel Dunbar | f56f191 | 2008-08-25 08:19:24 +0000 | [diff] [blame] | 3431 | |
| 3432 | // Check for an existing forward reference. |
Fariborz Jahanian | b0d2794 | 2009-01-07 20:11:22 +0000 | [diff] [blame] | 3433 | // Previously, metaclass with internal linkage may have been defined. |
| 3434 | // pass 'true' as 2nd argument so it is returned. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3435 | llvm::GlobalVariable *GV = CGM.getModule().getGlobalVariable(Name, true); |
| 3436 | if (!GV) |
| 3437 | GV = new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.ClassTy, false, |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 3438 | llvm::GlobalValue::PrivateLinkage, nullptr, |
| 3439 | Name); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3440 | |
| 3441 | assert(GV->getType()->getElementType() == ObjCTypes.ClassTy && |
| 3442 | "Forward metaclass reference has incorrect type."); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3443 | return GV; |
Daniel Dunbar | f56f191 | 2008-08-25 08:19:24 +0000 | [diff] [blame] | 3444 | } |
| 3445 | |
Fariborz Jahanian | b0069ee | 2009-11-12 20:14:24 +0000 | [diff] [blame] | 3446 | llvm::Value *CGObjCMac::EmitSuperClassRef(const ObjCInterfaceDecl *ID) { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3447 | std::string Name = "OBJC_CLASS_" + ID->getNameAsString(); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3448 | llvm::GlobalVariable *GV = CGM.getModule().getGlobalVariable(Name, true); |
| 3449 | |
| 3450 | if (!GV) |
| 3451 | GV = new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.ClassTy, false, |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 3452 | llvm::GlobalValue::PrivateLinkage, nullptr, |
| 3453 | Name); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3454 | |
| 3455 | assert(GV->getType()->getElementType() == ObjCTypes.ClassTy && |
| 3456 | "Forward class metadata reference has incorrect type."); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3457 | return GV; |
Fariborz Jahanian | b0069ee | 2009-11-12 20:14:24 +0000 | [diff] [blame] | 3458 | } |
| 3459 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3460 | /* |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3461 | Emit a "class extension", which in this specific context means extra |
| 3462 | data that doesn't fit in the normal fragile-ABI class structure, and |
| 3463 | has nothing to do with the language concept of a class extension. |
| 3464 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3465 | struct objc_class_ext { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3466 | uint32_t size; |
| 3467 | const char *weak_ivar_layout; |
| 3468 | struct _objc_property_list *properties; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3469 | }; |
| 3470 | */ |
| 3471 | llvm::Constant * |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3472 | CGObjCMac::EmitClassExtension(const ObjCImplementationDecl *ID, |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 3473 | CharUnits InstanceSize, bool hasMRCWeakIvars, |
| 3474 | bool isClassProperty) { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3475 | uint64_t Size = |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 3476 | CGM.getDataLayout().getTypeAllocSize(ObjCTypes.ClassExtensionTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3477 | |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 3478 | llvm::Constant *Values[3]; |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 3479 | Values[0] = llvm::ConstantInt::get(ObjCTypes.IntTy, Size); |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 3480 | if (isClassProperty) { |
| 3481 | llvm::Type *PtrTy = CGM.Int8PtrTy; |
| 3482 | Values[1] = llvm::Constant::getNullValue(PtrTy); |
| 3483 | } else |
| 3484 | Values[1] = BuildWeakIvarLayout(ID, CharUnits::Zero(), InstanceSize, |
| 3485 | hasMRCWeakIvars); |
| 3486 | if (isClassProperty) |
| 3487 | Values[2] = EmitPropertyList("\01l_OBJC_$_CLASS_PROP_LIST_" + ID->getName(), |
| 3488 | ID, ID->getClassInterface(), ObjCTypes, true); |
| 3489 | else |
| 3490 | Values[2] = EmitPropertyList("\01l_OBJC_$_PROP_LIST_" + ID->getName(), |
| 3491 | ID, ID->getClassInterface(), ObjCTypes, false); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3492 | |
| 3493 | // Return null if no extension bits are used. |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 3494 | if ((!Values[1] || Values[1]->isNullValue()) && Values[2]->isNullValue()) |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 3495 | return llvm::Constant::getNullValue(ObjCTypes.ClassExtensionPtrTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3496 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3497 | llvm::Constant *Init = |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 3498 | llvm::ConstantStruct::get(ObjCTypes.ClassExtensionTy, Values); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3499 | return CreateMetadataVar("OBJC_CLASSEXT_" + ID->getName(), Init, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3500 | "__OBJC,__class_ext,regular,no_dead_strip", |
| 3501 | CGM.getPointerAlign(), true); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3502 | } |
| 3503 | |
| 3504 | /* |
| 3505 | struct objc_ivar { |
Bill Wendling | 795b100 | 2012-02-22 09:30:11 +0000 | [diff] [blame] | 3506 | char *ivar_name; |
| 3507 | char *ivar_type; |
| 3508 | int ivar_offset; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3509 | }; |
| 3510 | |
| 3511 | struct objc_ivar_list { |
Bill Wendling | 795b100 | 2012-02-22 09:30:11 +0000 | [diff] [blame] | 3512 | int ivar_count; |
| 3513 | struct objc_ivar list[count]; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3514 | }; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3515 | */ |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3516 | llvm::Constant *CGObjCMac::EmitIvarList(const ObjCImplementationDecl *ID, |
Fariborz Jahanian | 46b86c6 | 2009-01-28 19:12:34 +0000 | [diff] [blame] | 3517 | bool ForClass) { |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 3518 | std::vector<llvm::Constant*> Ivars; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3519 | |
| 3520 | // When emitting the root class GCC emits ivar entries for the |
| 3521 | // actual class structure. It is not clear if we need to follow this |
| 3522 | // behavior; for now lets try and get away with not doing it. If so, |
| 3523 | // the cleanest solution would be to make up an ObjCInterfaceDecl |
| 3524 | // for the class. |
| 3525 | if (ForClass) |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 3526 | return llvm::Constant::getNullValue(ObjCTypes.IvarListPtrTy); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3527 | |
Jordy Rose | db8264e | 2011-07-22 02:08:32 +0000 | [diff] [blame] | 3528 | const ObjCInterfaceDecl *OID = ID->getClassInterface(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3529 | |
Jordy Rose | db8264e | 2011-07-22 02:08:32 +0000 | [diff] [blame] | 3530 | for (const ObjCIvarDecl *IVD = OID->all_declared_ivar_begin(); |
Fariborz Jahanian | bf9eb88 | 2011-06-28 18:05:25 +0000 | [diff] [blame] | 3531 | IVD; IVD = IVD->getNextIvar()) { |
Fariborz Jahanian | 8e6ac1d | 2009-06-04 01:19:09 +0000 | [diff] [blame] | 3532 | // Ignore unnamed bit-fields. |
| 3533 | if (!IVD->getDeclName()) |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3534 | continue; |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 3535 | llvm::Constant *Ivar[] = { |
| 3536 | GetMethodVarName(IVD->getIdentifier()), |
| 3537 | GetMethodVarType(IVD), |
| 3538 | llvm::ConstantInt::get(ObjCTypes.IntTy, |
Eli Friedman | e5b4666 | 2012-11-06 22:15:52 +0000 | [diff] [blame] | 3539 | ComputeIvarBaseOffset(CGM, OID, IVD)) |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 3540 | }; |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 3541 | Ivars.push_back(llvm::ConstantStruct::get(ObjCTypes.IvarTy, Ivar)); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3542 | } |
| 3543 | |
| 3544 | // Return null for empty list. |
| 3545 | if (Ivars.empty()) |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 3546 | return llvm::Constant::getNullValue(ObjCTypes.IvarListPtrTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3547 | |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 3548 | llvm::Constant *Values[2]; |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 3549 | Values[0] = llvm::ConstantInt::get(ObjCTypes.IntTy, Ivars.size()); |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 3550 | llvm::ArrayType *AT = llvm::ArrayType::get(ObjCTypes.IvarTy, |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3551 | Ivars.size()); |
Owen Anderson | 7db6d83 | 2009-07-28 18:33:04 +0000 | [diff] [blame] | 3552 | Values[1] = llvm::ConstantArray::get(AT, Ivars); |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 3553 | llvm::Constant *Init = llvm::ConstantStruct::getAnon(Values); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3554 | |
Daniel Dunbar | 63c5b50 | 2009-03-09 21:49:58 +0000 | [diff] [blame] | 3555 | llvm::GlobalVariable *GV; |
| 3556 | if (ForClass) |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3557 | GV = |
| 3558 | CreateMetadataVar("OBJC_CLASS_VARIABLES_" + ID->getName(), Init, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3559 | "__OBJC,__class_vars,regular,no_dead_strip", |
| 3560 | CGM.getPointerAlign(), true); |
Daniel Dunbar | 63c5b50 | 2009-03-09 21:49:58 +0000 | [diff] [blame] | 3561 | else |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 3562 | GV = CreateMetadataVar("OBJC_INSTANCE_VARIABLES_" + ID->getName(), Init, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3563 | "__OBJC,__instance_vars,regular,no_dead_strip", |
| 3564 | CGM.getPointerAlign(), true); |
Owen Anderson | 3c4972d | 2009-07-29 18:54:39 +0000 | [diff] [blame] | 3565 | return llvm::ConstantExpr::getBitCast(GV, ObjCTypes.IvarListPtrTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3566 | } |
| 3567 | |
| 3568 | /* |
| 3569 | struct objc_method { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3570 | SEL method_name; |
| 3571 | char *method_types; |
| 3572 | void *method; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3573 | }; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3574 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3575 | struct objc_method_list { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3576 | struct objc_method_list *obsolete; |
| 3577 | int count; |
| 3578 | struct objc_method methods_list[count]; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3579 | }; |
| 3580 | */ |
Daniel Dunbar | c45ef60 | 2008-08-26 21:51:14 +0000 | [diff] [blame] | 3581 | |
| 3582 | /// GetMethodConstant - Return a struct objc_method constant for the |
| 3583 | /// given method if it has been defined. The result is null if the |
| 3584 | /// method has not been defined. The return value has type MethodPtrTy. |
Daniel Dunbar | ae226fa | 2008-08-27 02:31:56 +0000 | [diff] [blame] | 3585 | llvm::Constant *CGObjCMac::GetMethodConstant(const ObjCMethodDecl *MD) { |
Argyrios Kyrtzidis | 9d50c06 | 2010-08-09 10:54:20 +0000 | [diff] [blame] | 3586 | llvm::Function *Fn = GetMethodDefinition(MD); |
Daniel Dunbar | c45ef60 | 2008-08-26 21:51:14 +0000 | [diff] [blame] | 3587 | if (!Fn) |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 3588 | return nullptr; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3589 | |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 3590 | llvm::Constant *Method[] = { |
Owen Anderson | 3c4972d | 2009-07-29 18:54:39 +0000 | [diff] [blame] | 3591 | llvm::ConstantExpr::getBitCast(GetMethodVarName(MD->getSelector()), |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 3592 | ObjCTypes.SelectorPtrTy), |
| 3593 | GetMethodVarType(MD), |
| 3594 | llvm::ConstantExpr::getBitCast(Fn, ObjCTypes.Int8PtrTy) |
| 3595 | }; |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 3596 | return llvm::ConstantStruct::get(ObjCTypes.MethodTy, Method); |
Daniel Dunbar | c45ef60 | 2008-08-26 21:51:14 +0000 | [diff] [blame] | 3597 | } |
| 3598 | |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 3599 | llvm::Constant *CGObjCMac::EmitMethodList(Twine Name, StringRef Section, |
| 3600 | ArrayRef<llvm::Constant *> Methods) { |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3601 | // Return null for empty list. |
| 3602 | if (Methods.empty()) |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 3603 | return llvm::Constant::getNullValue(ObjCTypes.MethodListPtrTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3604 | |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 3605 | llvm::Constant *Values[3]; |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 3606 | Values[0] = llvm::Constant::getNullValue(ObjCTypes.Int8PtrTy); |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 3607 | Values[1] = llvm::ConstantInt::get(ObjCTypes.IntTy, Methods.size()); |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 3608 | llvm::ArrayType *AT = llvm::ArrayType::get(ObjCTypes.MethodTy, |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3609 | Methods.size()); |
Owen Anderson | 7db6d83 | 2009-07-28 18:33:04 +0000 | [diff] [blame] | 3610 | Values[2] = llvm::ConstantArray::get(AT, Methods); |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 3611 | llvm::Constant *Init = llvm::ConstantStruct::getAnon(Values); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 3612 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3613 | llvm::GlobalVariable *GV = |
| 3614 | CreateMetadataVar(Name, Init, Section, CGM.getPointerAlign(), true); |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 3615 | return llvm::ConstantExpr::getBitCast(GV, ObjCTypes.MethodListPtrTy); |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 3616 | } |
| 3617 | |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 3618 | llvm::Function *CGObjCCommonMac::GenerateMethod(const ObjCMethodDecl *OMD, |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3619 | const ObjCContainerDecl *CD) { |
Dylan Noblesmith | f7ccbad | 2012-02-05 02:13:05 +0000 | [diff] [blame] | 3620 | SmallString<256> Name; |
Fariborz Jahanian | 679a502 | 2009-01-10 21:06:09 +0000 | [diff] [blame] | 3621 | GetNameForMethod(OMD, CD, Name); |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 3622 | |
Daniel Dunbar | 541b63b | 2009-02-02 23:23:47 +0000 | [diff] [blame] | 3623 | CodeGenTypes &Types = CGM.getTypes(); |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 3624 | llvm::FunctionType *MethodTy = |
John McCall | de5d3c7 | 2012-02-17 03:33:10 +0000 | [diff] [blame] | 3625 | Types.GetFunctionType(Types.arrangeObjCMethodDeclaration(OMD)); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3626 | llvm::Function *Method = |
Daniel Dunbar | 45c25ba | 2008-09-10 04:01:49 +0000 | [diff] [blame] | 3627 | llvm::Function::Create(MethodTy, |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 3628 | llvm::GlobalValue::InternalLinkage, |
Daniel Dunbar | c575ce7 | 2009-10-19 01:21:19 +0000 | [diff] [blame] | 3629 | Name.str(), |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 3630 | &CGM.getModule()); |
Daniel Dunbar | c45ef60 | 2008-08-26 21:51:14 +0000 | [diff] [blame] | 3631 | MethodDefinitions.insert(std::make_pair(OMD, Method)); |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 3632 | |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 3633 | return Method; |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 3634 | } |
| 3635 | |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 3636 | llvm::GlobalVariable *CGObjCCommonMac::CreateMetadataVar(Twine Name, |
| 3637 | llvm::Constant *Init, |
| 3638 | StringRef Section, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3639 | CharUnits Align, |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 3640 | bool AddToUsed) { |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 3641 | llvm::Type *Ty = Init->getType(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3642 | llvm::GlobalVariable *GV = |
Owen Anderson | 1c431b3 | 2009-07-08 19:05:04 +0000 | [diff] [blame] | 3643 | new llvm::GlobalVariable(CGM.getModule(), Ty, false, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3644 | llvm::GlobalValue::PrivateLinkage, Init, Name); |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 3645 | if (!Section.empty()) |
Daniel Dunbar | fd65d37 | 2009-03-09 20:09:19 +0000 | [diff] [blame] | 3646 | GV->setSection(Section); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3647 | GV->setAlignment(Align.getQuantity()); |
Daniel Dunbar | 35bd763 | 2009-03-09 20:50:13 +0000 | [diff] [blame] | 3648 | if (AddToUsed) |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3649 | CGM.addCompilerUsedGlobal(GV); |
Daniel Dunbar | fd65d37 | 2009-03-09 20:09:19 +0000 | [diff] [blame] | 3650 | return GV; |
| 3651 | } |
| 3652 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3653 | llvm::Function *CGObjCMac::ModuleInitFunction() { |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 3654 | // Abuse this interface function as a place to finalize. |
| 3655 | FinishModule(); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 3656 | return nullptr; |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 3657 | } |
| 3658 | |
Chris Lattner | 74391b4 | 2009-03-22 21:03:39 +0000 | [diff] [blame] | 3659 | llvm::Constant *CGObjCMac::GetPropertyGetFunction() { |
Chris Lattner | 72db6c3 | 2009-04-22 02:44:54 +0000 | [diff] [blame] | 3660 | return ObjCTypes.getGetPropertyFn(); |
Daniel Dunbar | 49f6602 | 2008-09-24 03:38:44 +0000 | [diff] [blame] | 3661 | } |
| 3662 | |
Chris Lattner | 74391b4 | 2009-03-22 21:03:39 +0000 | [diff] [blame] | 3663 | llvm::Constant *CGObjCMac::GetPropertySetFunction() { |
Chris Lattner | 72db6c3 | 2009-04-22 02:44:54 +0000 | [diff] [blame] | 3664 | return ObjCTypes.getSetPropertyFn(); |
Daniel Dunbar | 49f6602 | 2008-09-24 03:38:44 +0000 | [diff] [blame] | 3665 | } |
| 3666 | |
Ted Kremenek | ebcb57a | 2012-03-06 20:05:56 +0000 | [diff] [blame] | 3667 | llvm::Constant *CGObjCMac::GetOptimizedPropertySetFunction(bool atomic, |
| 3668 | bool copy) { |
| 3669 | return ObjCTypes.getOptimizedSetPropertyFn(atomic, copy); |
| 3670 | } |
| 3671 | |
David Chisnall | 8fac25d | 2010-12-26 22:13:16 +0000 | [diff] [blame] | 3672 | llvm::Constant *CGObjCMac::GetGetStructFunction() { |
| 3673 | return ObjCTypes.getCopyStructFn(); |
| 3674 | } |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 3675 | |
David Chisnall | 8fac25d | 2010-12-26 22:13:16 +0000 | [diff] [blame] | 3676 | llvm::Constant *CGObjCMac::GetSetStructFunction() { |
Fariborz Jahanian | 6cc5906 | 2010-04-12 18:18:10 +0000 | [diff] [blame] | 3677 | return ObjCTypes.getCopyStructFn(); |
| 3678 | } |
| 3679 | |
David Chisnall | d397cfe | 2012-12-17 18:54:24 +0000 | [diff] [blame] | 3680 | llvm::Constant *CGObjCMac::GetCppAtomicObjectGetFunction() { |
| 3681 | return ObjCTypes.getCppAtomicObjectFunction(); |
| 3682 | } |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 3683 | |
David Chisnall | d397cfe | 2012-12-17 18:54:24 +0000 | [diff] [blame] | 3684 | llvm::Constant *CGObjCMac::GetCppAtomicObjectSetFunction() { |
Fariborz Jahanian | e317302 | 2012-01-06 18:07:23 +0000 | [diff] [blame] | 3685 | return ObjCTypes.getCppAtomicObjectFunction(); |
| 3686 | } |
| 3687 | |
Chris Lattner | 74391b4 | 2009-03-22 21:03:39 +0000 | [diff] [blame] | 3688 | llvm::Constant *CGObjCMac::EnumerationMutationFunction() { |
Chris Lattner | 72db6c3 | 2009-04-22 02:44:54 +0000 | [diff] [blame] | 3689 | return ObjCTypes.getEnumerationMutationFn(); |
Anders Carlsson | 2abd89c | 2008-08-31 04:05:03 +0000 | [diff] [blame] | 3690 | } |
| 3691 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 3692 | void CGObjCMac::EmitTryStmt(CodeGenFunction &CGF, const ObjCAtTryStmt &S) { |
| 3693 | return EmitTryOrSynchronizedStmt(CGF, S); |
| 3694 | } |
| 3695 | |
| 3696 | void CGObjCMac::EmitSynchronizedStmt(CodeGenFunction &CGF, |
| 3697 | const ObjCAtSynchronizedStmt &S) { |
| 3698 | return EmitTryOrSynchronizedStmt(CGF, S); |
| 3699 | } |
| 3700 | |
John McCall | cc50529 | 2010-07-21 06:59:36 +0000 | [diff] [blame] | 3701 | namespace { |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3702 | struct PerformFragileFinally final : EHScopeStack::Cleanup { |
John McCall | cc50529 | 2010-07-21 06:59:36 +0000 | [diff] [blame] | 3703 | const Stmt &S; |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3704 | Address SyncArgSlot; |
| 3705 | Address CallTryExitVar; |
| 3706 | Address ExceptionData; |
John McCall | cc50529 | 2010-07-21 06:59:36 +0000 | [diff] [blame] | 3707 | ObjCTypesHelper &ObjCTypes; |
| 3708 | PerformFragileFinally(const Stmt *S, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3709 | Address SyncArgSlot, |
| 3710 | Address CallTryExitVar, |
| 3711 | Address ExceptionData, |
John McCall | cc50529 | 2010-07-21 06:59:36 +0000 | [diff] [blame] | 3712 | ObjCTypesHelper *ObjCTypes) |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 3713 | : S(*S), SyncArgSlot(SyncArgSlot), CallTryExitVar(CallTryExitVar), |
John McCall | cc50529 | 2010-07-21 06:59:36 +0000 | [diff] [blame] | 3714 | ExceptionData(ExceptionData), ObjCTypes(*ObjCTypes) {} |
| 3715 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 3716 | void Emit(CodeGenFunction &CGF, Flags flags) override { |
John McCall | cc50529 | 2010-07-21 06:59:36 +0000 | [diff] [blame] | 3717 | // Check whether we need to call objc_exception_try_exit. |
| 3718 | // In optimized code, this branch will always be folded. |
| 3719 | llvm::BasicBlock *FinallyCallExit = |
| 3720 | CGF.createBasicBlock("finally.call_exit"); |
| 3721 | llvm::BasicBlock *FinallyNoCallExit = |
| 3722 | CGF.createBasicBlock("finally.no_call_exit"); |
| 3723 | CGF.Builder.CreateCondBr(CGF.Builder.CreateLoad(CallTryExitVar), |
| 3724 | FinallyCallExit, FinallyNoCallExit); |
| 3725 | |
| 3726 | CGF.EmitBlock(FinallyCallExit); |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 3727 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getExceptionTryExitFn(), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3728 | ExceptionData.getPointer()); |
John McCall | cc50529 | 2010-07-21 06:59:36 +0000 | [diff] [blame] | 3729 | |
| 3730 | CGF.EmitBlock(FinallyNoCallExit); |
| 3731 | |
| 3732 | if (isa<ObjCAtTryStmt>(S)) { |
| 3733 | if (const ObjCAtFinallyStmt* FinallyStmt = |
John McCall | d96a8e7 | 2010-08-11 00:16:14 +0000 | [diff] [blame] | 3734 | cast<ObjCAtTryStmt>(S).getFinallyStmt()) { |
John McCall | 73c56bb | 2013-04-03 00:56:07 +0000 | [diff] [blame] | 3735 | // Don't try to do the @finally if this is an EH cleanup. |
| 3736 | if (flags.isForEHCleanup()) return; |
| 3737 | |
John McCall | d96a8e7 | 2010-08-11 00:16:14 +0000 | [diff] [blame] | 3738 | // Save the current cleanup destination in case there's |
| 3739 | // control flow inside the finally statement. |
| 3740 | llvm::Value *CurCleanupDest = |
| 3741 | CGF.Builder.CreateLoad(CGF.getNormalCleanupDestSlot()); |
| 3742 | |
John McCall | cc50529 | 2010-07-21 06:59:36 +0000 | [diff] [blame] | 3743 | CGF.EmitStmt(FinallyStmt->getFinallyBody()); |
| 3744 | |
John McCall | d96a8e7 | 2010-08-11 00:16:14 +0000 | [diff] [blame] | 3745 | if (CGF.HaveInsertPoint()) { |
| 3746 | CGF.Builder.CreateStore(CurCleanupDest, |
| 3747 | CGF.getNormalCleanupDestSlot()); |
| 3748 | } else { |
| 3749 | // Currently, the end of the cleanup must always exist. |
| 3750 | CGF.EnsureInsertPoint(); |
| 3751 | } |
| 3752 | } |
John McCall | cc50529 | 2010-07-21 06:59:36 +0000 | [diff] [blame] | 3753 | } else { |
| 3754 | // Emit objc_sync_exit(expr); as finally's sole statement for |
| 3755 | // @synchronized. |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 3756 | llvm::Value *SyncArg = CGF.Builder.CreateLoad(SyncArgSlot); |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 3757 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getSyncExitFn(), SyncArg); |
John McCall | cc50529 | 2010-07-21 06:59:36 +0000 | [diff] [blame] | 3758 | } |
| 3759 | } |
| 3760 | }; |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 3761 | |
| 3762 | class FragileHazards { |
| 3763 | CodeGenFunction &CGF; |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 3764 | SmallVector<llvm::Value*, 20> Locals; |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 3765 | llvm::DenseSet<llvm::BasicBlock*> BlocksBeforeTry; |
| 3766 | |
| 3767 | llvm::InlineAsm *ReadHazard; |
| 3768 | llvm::InlineAsm *WriteHazard; |
| 3769 | |
| 3770 | llvm::FunctionType *GetAsmFnType(); |
| 3771 | |
| 3772 | void collectLocals(); |
| 3773 | void emitReadHazard(CGBuilderTy &Builder); |
| 3774 | |
| 3775 | public: |
| 3776 | FragileHazards(CodeGenFunction &CGF); |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 3777 | |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 3778 | void emitWriteHazard(); |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 3779 | void emitHazardsInNewBlocks(); |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 3780 | }; |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 3781 | } // end anonymous namespace |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 3782 | |
| 3783 | /// Create the fragile-ABI read and write hazards based on the current |
| 3784 | /// state of the function, which is presumed to be immediately prior |
| 3785 | /// to a @try block. These hazards are used to maintain correct |
| 3786 | /// semantics in the face of optimization and the fragile ABI's |
| 3787 | /// cavalier use of setjmp/longjmp. |
| 3788 | FragileHazards::FragileHazards(CodeGenFunction &CGF) : CGF(CGF) { |
| 3789 | collectLocals(); |
| 3790 | |
| 3791 | if (Locals.empty()) return; |
| 3792 | |
| 3793 | // Collect all the blocks in the function. |
| 3794 | for (llvm::Function::iterator |
| 3795 | I = CGF.CurFn->begin(), E = CGF.CurFn->end(); I != E; ++I) |
| 3796 | BlocksBeforeTry.insert(&*I); |
| 3797 | |
| 3798 | llvm::FunctionType *AsmFnTy = GetAsmFnType(); |
| 3799 | |
| 3800 | // Create a read hazard for the allocas. This inhibits dead-store |
| 3801 | // optimizations and forces the values to memory. This hazard is |
| 3802 | // inserted before any 'throwing' calls in the protected scope to |
| 3803 | // reflect the possibility that the variables might be read from the |
| 3804 | // catch block if the call throws. |
| 3805 | { |
| 3806 | std::string Constraint; |
| 3807 | for (unsigned I = 0, E = Locals.size(); I != E; ++I) { |
| 3808 | if (I) Constraint += ','; |
| 3809 | Constraint += "*m"; |
| 3810 | } |
| 3811 | |
| 3812 | ReadHazard = llvm::InlineAsm::get(AsmFnTy, "", Constraint, true, false); |
| 3813 | } |
| 3814 | |
| 3815 | // Create a write hazard for the allocas. This inhibits folding |
| 3816 | // loads across the hazard. This hazard is inserted at the |
| 3817 | // beginning of the catch path to reflect the possibility that the |
| 3818 | // variables might have been written within the protected scope. |
| 3819 | { |
| 3820 | std::string Constraint; |
| 3821 | for (unsigned I = 0, E = Locals.size(); I != E; ++I) { |
| 3822 | if (I) Constraint += ','; |
| 3823 | Constraint += "=*m"; |
| 3824 | } |
| 3825 | |
| 3826 | WriteHazard = llvm::InlineAsm::get(AsmFnTy, "", Constraint, true, false); |
| 3827 | } |
| 3828 | } |
| 3829 | |
| 3830 | /// Emit a write hazard at the current location. |
| 3831 | void FragileHazards::emitWriteHazard() { |
| 3832 | if (Locals.empty()) return; |
| 3833 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 3834 | CGF.EmitNounwindRuntimeCall(WriteHazard, Locals); |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 3835 | } |
| 3836 | |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 3837 | void FragileHazards::emitReadHazard(CGBuilderTy &Builder) { |
| 3838 | assert(!Locals.empty()); |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 3839 | llvm::CallInst *call = Builder.CreateCall(ReadHazard, Locals); |
| 3840 | call->setDoesNotThrow(); |
| 3841 | call->setCallingConv(CGF.getRuntimeCC()); |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 3842 | } |
| 3843 | |
| 3844 | /// Emit read hazards in all the protected blocks, i.e. all the blocks |
| 3845 | /// which have been inserted since the beginning of the try. |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 3846 | void FragileHazards::emitHazardsInNewBlocks() { |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 3847 | if (Locals.empty()) return; |
| 3848 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3849 | CGBuilderTy Builder(CGF, CGF.getLLVMContext()); |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 3850 | |
| 3851 | // Iterate through all blocks, skipping those prior to the try. |
| 3852 | for (llvm::Function::iterator |
| 3853 | FI = CGF.CurFn->begin(), FE = CGF.CurFn->end(); FI != FE; ++FI) { |
| 3854 | llvm::BasicBlock &BB = *FI; |
| 3855 | if (BlocksBeforeTry.count(&BB)) continue; |
| 3856 | |
| 3857 | // Walk through all the calls in the block. |
| 3858 | for (llvm::BasicBlock::iterator |
| 3859 | BI = BB.begin(), BE = BB.end(); BI != BE; ++BI) { |
| 3860 | llvm::Instruction &I = *BI; |
| 3861 | |
| 3862 | // Ignore instructions that aren't non-intrinsic calls. |
| 3863 | // These are the only calls that can possibly call longjmp. |
| 3864 | if (!isa<llvm::CallInst>(I) && !isa<llvm::InvokeInst>(I)) continue; |
| 3865 | if (isa<llvm::IntrinsicInst>(I)) |
| 3866 | continue; |
| 3867 | |
| 3868 | // Ignore call sites marked nounwind. This may be questionable, |
| 3869 | // since 'nounwind' doesn't necessarily mean 'does not call longjmp'. |
| 3870 | llvm::CallSite CS(&I); |
| 3871 | if (CS.doesNotThrow()) continue; |
| 3872 | |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 3873 | // Insert a read hazard before the call. This will ensure that |
| 3874 | // any writes to the locals are performed before making the |
| 3875 | // call. If the call throws, then this is sufficient to |
| 3876 | // guarantee correctness as long as it doesn't also write to any |
| 3877 | // locals. |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 3878 | Builder.SetInsertPoint(&BB, BI); |
| 3879 | emitReadHazard(Builder); |
| 3880 | } |
| 3881 | } |
| 3882 | } |
| 3883 | |
| 3884 | static void addIfPresent(llvm::DenseSet<llvm::Value*> &S, llvm::Value *V) { |
| 3885 | if (V) S.insert(V); |
| 3886 | } |
| 3887 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 3888 | static void addIfPresent(llvm::DenseSet<llvm::Value*> &S, Address V) { |
| 3889 | if (V.isValid()) S.insert(V.getPointer()); |
| 3890 | } |
| 3891 | |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 3892 | void FragileHazards::collectLocals() { |
| 3893 | // Compute a set of allocas to ignore. |
| 3894 | llvm::DenseSet<llvm::Value*> AllocasToIgnore; |
| 3895 | addIfPresent(AllocasToIgnore, CGF.ReturnValue); |
| 3896 | addIfPresent(AllocasToIgnore, CGF.NormalCleanupDest); |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 3897 | |
| 3898 | // Collect all the allocas currently in the function. This is |
| 3899 | // probably way too aggressive. |
| 3900 | llvm::BasicBlock &Entry = CGF.CurFn->getEntryBlock(); |
| 3901 | for (llvm::BasicBlock::iterator |
| 3902 | I = Entry.begin(), E = Entry.end(); I != E; ++I) |
| 3903 | if (isa<llvm::AllocaInst>(*I) && !AllocasToIgnore.count(&*I)) |
| 3904 | Locals.push_back(&*I); |
| 3905 | } |
| 3906 | |
| 3907 | llvm::FunctionType *FragileHazards::GetAsmFnType() { |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 3908 | SmallVector<llvm::Type *, 16> tys(Locals.size()); |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 3909 | for (unsigned i = 0, e = Locals.size(); i != e; ++i) |
| 3910 | tys[i] = Locals[i]->getType(); |
| 3911 | return llvm::FunctionType::get(CGF.VoidTy, tys, false); |
John McCall | cc50529 | 2010-07-21 06:59:36 +0000 | [diff] [blame] | 3912 | } |
| 3913 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3914 | /* |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 3915 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3916 | Objective-C setjmp-longjmp (sjlj) Exception Handling |
| 3917 | -- |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 3918 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 3919 | A catch buffer is a setjmp buffer plus: |
| 3920 | - a pointer to the exception that was caught |
| 3921 | - a pointer to the previous exception data buffer |
| 3922 | - two pointers of reserved storage |
| 3923 | Therefore catch buffers form a stack, with a pointer to the top |
| 3924 | of the stack kept in thread-local storage. |
| 3925 | |
| 3926 | objc_exception_try_enter pushes a catch buffer onto the EH stack. |
| 3927 | objc_exception_try_exit pops the given catch buffer, which is |
| 3928 | required to be the top of the EH stack. |
| 3929 | objc_exception_throw pops the top of the EH stack, writes the |
| 3930 | thrown exception into the appropriate field, and longjmps |
| 3931 | to the setjmp buffer. It crashes the process (with a printf |
| 3932 | and an abort()) if there are no catch buffers on the stack. |
| 3933 | objc_exception_extract just reads the exception pointer out of the |
| 3934 | catch buffer. |
| 3935 | |
| 3936 | There's no reason an implementation couldn't use a light-weight |
| 3937 | setjmp here --- something like __builtin_setjmp, but API-compatible |
| 3938 | with the heavyweight setjmp. This will be more important if we ever |
| 3939 | want to implement correct ObjC/C++ exception interactions for the |
| 3940 | fragile ABI. |
| 3941 | |
| 3942 | Note that for this use of setjmp/longjmp to be correct, we may need |
| 3943 | to mark some local variables volatile: if a non-volatile local |
| 3944 | variable is modified between the setjmp and the longjmp, it has |
| 3945 | indeterminate value. For the purposes of LLVM IR, it may be |
| 3946 | sufficient to make loads and stores within the @try (to variables |
| 3947 | declared outside the @try) volatile. This is necessary for |
| 3948 | optimized correctness, but is not currently being done; this is |
| 3949 | being tracked as rdar://problem/8160285 |
| 3950 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3951 | The basic framework for a @try-catch-finally is as follows: |
| 3952 | { |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 3953 | objc_exception_data d; |
| 3954 | id _rethrow = null; |
Anders Carlsson | 190d00e | 2009-02-07 21:26:04 +0000 | [diff] [blame] | 3955 | bool _call_try_exit = true; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3956 | |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 3957 | objc_exception_try_enter(&d); |
| 3958 | if (!setjmp(d.jmp_buf)) { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3959 | ... try body ... |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 3960 | } else { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3961 | // exception path |
| 3962 | id _caught = objc_exception_extract(&d); |
| 3963 | |
| 3964 | // enter new try scope for handlers |
| 3965 | if (!setjmp(d.jmp_buf)) { |
| 3966 | ... match exception and execute catch blocks ... |
| 3967 | |
| 3968 | // fell off end, rethrow. |
| 3969 | _rethrow = _caught; |
| 3970 | ... jump-through-finally to finally_rethrow ... |
| 3971 | } else { |
| 3972 | // exception in catch block |
| 3973 | _rethrow = objc_exception_extract(&d); |
| 3974 | _call_try_exit = false; |
| 3975 | ... jump-through-finally to finally_rethrow ... |
| 3976 | } |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 3977 | } |
Daniel Dunbar | 898d508 | 2008-09-30 01:06:03 +0000 | [diff] [blame] | 3978 | ... jump-through-finally to finally_end ... |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 3979 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3980 | finally: |
Anders Carlsson | 190d00e | 2009-02-07 21:26:04 +0000 | [diff] [blame] | 3981 | if (_call_try_exit) |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3982 | objc_exception_try_exit(&d); |
Anders Carlsson | 190d00e | 2009-02-07 21:26:04 +0000 | [diff] [blame] | 3983 | |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 3984 | ... finally block .... |
Daniel Dunbar | 898d508 | 2008-09-30 01:06:03 +0000 | [diff] [blame] | 3985 | ... dispatch to finally destination ... |
| 3986 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3987 | finally_rethrow: |
Daniel Dunbar | 898d508 | 2008-09-30 01:06:03 +0000 | [diff] [blame] | 3988 | objc_exception_throw(_rethrow); |
| 3989 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3990 | finally_end: |
| 3991 | } |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 3992 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3993 | This framework differs slightly from the one gcc uses, in that gcc |
| 3994 | uses _rethrow to determine if objc_exception_try_exit should be called |
| 3995 | and if the object should be rethrown. This breaks in the face of |
| 3996 | throwing nil and introduces unnecessary branches. |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 3997 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 3998 | We specialize this framework for a few particular circumstances: |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 3999 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4000 | - If there are no catch blocks, then we avoid emitting the second |
| 4001 | exception handling context. |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 4002 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4003 | - If there is a catch-all catch block (i.e. @catch(...) or @catch(id |
| 4004 | e)) we avoid emitting the code to rethrow an uncaught exception. |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 4005 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4006 | - FIXME: If there is no @finally block we can do a few more |
| 4007 | simplifications. |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 4008 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4009 | Rethrows and Jumps-Through-Finally |
| 4010 | -- |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 4011 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4012 | '@throw;' is supported by pushing the currently-caught exception |
| 4013 | onto ObjCEHStack while the @catch blocks are emitted. |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 4014 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4015 | Branches through the @finally block are handled with an ordinary |
| 4016 | normal cleanup. We do not register an EH cleanup; fragile-ABI ObjC |
| 4017 | exceptions are not compatible with C++ exceptions, and this is |
| 4018 | hardly the only place where this will go wrong. |
Daniel Dunbar | 898d508 | 2008-09-30 01:06:03 +0000 | [diff] [blame] | 4019 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4020 | @synchronized(expr) { stmt; } is emitted as if it were: |
| 4021 | id synch_value = expr; |
| 4022 | objc_sync_enter(synch_value); |
| 4023 | @try { stmt; } @finally { objc_sync_exit(synch_value); } |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 4024 | */ |
| 4025 | |
Fariborz Jahanian | bd71be4 | 2008-11-21 00:49:24 +0000 | [diff] [blame] | 4026 | void CGObjCMac::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, |
| 4027 | const Stmt &S) { |
| 4028 | bool isTry = isa<ObjCAtTryStmt>(S); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4029 | |
| 4030 | // A destination for the fall-through edges of the catch handlers to |
| 4031 | // jump to. |
| 4032 | CodeGenFunction::JumpDest FinallyEnd = |
| 4033 | CGF.getJumpDestInCurrentScope("finally.end"); |
| 4034 | |
| 4035 | // A destination for the rethrow edge of the catch handlers to jump |
| 4036 | // to. |
| 4037 | CodeGenFunction::JumpDest FinallyRethrow = |
| 4038 | CGF.getJumpDestInCurrentScope("finally.rethrow"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4039 | |
Daniel Dunbar | 1c56667 | 2009-02-24 01:43:46 +0000 | [diff] [blame] | 4040 | // For @synchronized, call objc_sync_enter(sync.expr). The |
| 4041 | // evaluation of the expression must occur before we enter the |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4042 | // @synchronized. We can't avoid a temp here because we need the |
| 4043 | // value to be preserved. If the backend ever does liveness |
| 4044 | // correctly after setjmp, this will be unnecessary. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4045 | Address SyncArgSlot = Address::invalid(); |
Daniel Dunbar | 1c56667 | 2009-02-24 01:43:46 +0000 | [diff] [blame] | 4046 | if (!isTry) { |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4047 | llvm::Value *SyncArg = |
Daniel Dunbar | 1c56667 | 2009-02-24 01:43:46 +0000 | [diff] [blame] | 4048 | CGF.EmitScalarExpr(cast<ObjCAtSynchronizedStmt>(S).getSynchExpr()); |
| 4049 | SyncArg = CGF.Builder.CreateBitCast(SyncArg, ObjCTypes.ObjectPtrTy); |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4050 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getSyncEnterFn(), SyncArg); |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4051 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4052 | SyncArgSlot = CGF.CreateTempAlloca(SyncArg->getType(), |
| 4053 | CGF.getPointerAlign(), "sync.arg"); |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4054 | CGF.Builder.CreateStore(SyncArg, SyncArgSlot); |
Daniel Dunbar | 1c56667 | 2009-02-24 01:43:46 +0000 | [diff] [blame] | 4055 | } |
Daniel Dunbar | 898d508 | 2008-09-30 01:06:03 +0000 | [diff] [blame] | 4056 | |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4057 | // Allocate memory for the setjmp buffer. This needs to be kept |
| 4058 | // live throughout the try and catch blocks. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4059 | Address ExceptionData = CGF.CreateTempAlloca(ObjCTypes.ExceptionDataTy, |
| 4060 | CGF.getPointerAlign(), |
| 4061 | "exceptiondata.ptr"); |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4062 | |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 4063 | // Create the fragile hazards. Note that this will not capture any |
| 4064 | // of the allocas required for exception processing, but will |
| 4065 | // capture the current basic block (which extends all the way to the |
| 4066 | // setjmp call) as "before the @try". |
| 4067 | FragileHazards Hazards(CGF); |
| 4068 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4069 | // Create a flag indicating whether the cleanup needs to call |
| 4070 | // objc_exception_try_exit. This is true except when |
| 4071 | // - no catches match and we're branching through the cleanup |
| 4072 | // just to rethrow the exception, or |
| 4073 | // - a catch matched and we're falling out of the catch handler. |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4074 | // The setjmp-safety rule here is that we should always store to this |
| 4075 | // variable in a place that dominates the branch through the cleanup |
| 4076 | // without passing through any setjmps. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4077 | Address CallTryExitVar = CGF.CreateTempAlloca(CGF.Builder.getInt1Ty(), |
| 4078 | CharUnits::One(), |
| 4079 | "_call_try_exit"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4080 | |
John McCall | 9e2213d | 2010-10-04 23:42:51 +0000 | [diff] [blame] | 4081 | // A slot containing the exception to rethrow. Only needed when we |
| 4082 | // have both a @catch and a @finally. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4083 | Address PropagatingExnVar = Address::invalid(); |
John McCall | 9e2213d | 2010-10-04 23:42:51 +0000 | [diff] [blame] | 4084 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4085 | // Push a normal cleanup to leave the try scope. |
John McCall | 73c56bb | 2013-04-03 00:56:07 +0000 | [diff] [blame] | 4086 | CGF.EHStack.pushCleanup<PerformFragileFinally>(NormalAndEHCleanup, &S, |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4087 | SyncArgSlot, |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 4088 | CallTryExitVar, |
| 4089 | ExceptionData, |
| 4090 | &ObjCTypes); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4091 | |
| 4092 | // Enter a try block: |
| 4093 | // - Call objc_exception_try_enter to push ExceptionData on top of |
| 4094 | // the EH stack. |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 4095 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getExceptionTryEnterFn(), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4096 | ExceptionData.getPointer()); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4097 | |
| 4098 | // - Call setjmp on the exception data buffer. |
| 4099 | llvm::Constant *Zero = llvm::ConstantInt::get(CGF.Builder.getInt32Ty(), 0); |
| 4100 | llvm::Value *GEPIndexes[] = { Zero, Zero, Zero }; |
Pirama Arumuga Nainar | 58878f8 | 2015-05-06 11:48:57 -0700 | [diff] [blame] | 4101 | llvm::Value *SetJmpBuffer = CGF.Builder.CreateGEP( |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4102 | ObjCTypes.ExceptionDataTy, ExceptionData.getPointer(), GEPIndexes, |
| 4103 | "setjmp_buffer"); |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 4104 | llvm::CallInst *SetJmpResult = CGF.EmitNounwindRuntimeCall( |
| 4105 | ObjCTypes.getSetJmpFn(), SetJmpBuffer, "setjmp_result"); |
Bill Wendling | 6446c3e | 2011-12-19 23:53:28 +0000 | [diff] [blame] | 4106 | SetJmpResult->setCanReturnTwice(); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4107 | |
| 4108 | // If setjmp returned 0, enter the protected block; otherwise, |
| 4109 | // branch to the handler. |
Daniel Dunbar | 55e8742 | 2008-11-11 02:29:29 +0000 | [diff] [blame] | 4110 | llvm::BasicBlock *TryBlock = CGF.createBasicBlock("try"); |
| 4111 | llvm::BasicBlock *TryHandler = CGF.createBasicBlock("try.handler"); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4112 | llvm::Value *DidCatch = |
John McCall | d96a8e7 | 2010-08-11 00:16:14 +0000 | [diff] [blame] | 4113 | CGF.Builder.CreateIsNotNull(SetJmpResult, "did_catch_exception"); |
| 4114 | CGF.Builder.CreateCondBr(DidCatch, TryHandler, TryBlock); |
Anders Carlsson | 80f2567 | 2008-09-09 17:59:25 +0000 | [diff] [blame] | 4115 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4116 | // Emit the protected block. |
Anders Carlsson | 80f2567 | 2008-09-09 17:59:25 +0000 | [diff] [blame] | 4117 | CGF.EmitBlock(TryBlock); |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4118 | CGF.Builder.CreateStore(CGF.Builder.getTrue(), CallTryExitVar); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4119 | CGF.EmitStmt(isTry ? cast<ObjCAtTryStmt>(S).getTryBody() |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4120 | : cast<ObjCAtSynchronizedStmt>(S).getSynchBody()); |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4121 | |
| 4122 | CGBuilderTy::InsertPoint TryFallthroughIP = CGF.Builder.saveAndClearIP(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4123 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4124 | // Emit the exception handler block. |
Daniel Dunbar | e4b5ee0 | 2008-09-27 23:30:04 +0000 | [diff] [blame] | 4125 | CGF.EmitBlock(TryHandler); |
Daniel Dunbar | 55e4072 | 2008-09-27 07:03:52 +0000 | [diff] [blame] | 4126 | |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 4127 | // Don't optimize loads of the in-scope locals across this point. |
| 4128 | Hazards.emitWriteHazard(); |
| 4129 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4130 | // For a @synchronized (or a @try with no catches), just branch |
| 4131 | // through the cleanup to the rethrow block. |
| 4132 | if (!isTry || !cast<ObjCAtTryStmt>(S).getNumCatchStmts()) { |
| 4133 | // Tell the cleanup not to re-pop the exit. |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4134 | CGF.Builder.CreateStore(CGF.Builder.getFalse(), CallTryExitVar); |
Anders Carlsson | f3a79a9 | 2009-02-09 20:38:58 +0000 | [diff] [blame] | 4135 | CGF.EmitBranchThroughCleanup(FinallyRethrow); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4136 | |
| 4137 | // Otherwise, we have to match against the caught exceptions. |
| 4138 | } else { |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4139 | // Retrieve the exception object. We may emit multiple blocks but |
| 4140 | // nothing can cross this so the value is already in SSA form. |
| 4141 | llvm::CallInst *Caught = |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4142 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getExceptionExtractFn(), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4143 | ExceptionData.getPointer(), "caught"); |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4144 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4145 | // Push the exception to rethrow onto the EH value stack for the |
| 4146 | // benefit of any @throws in the handlers. |
| 4147 | CGF.ObjCEHValueStack.push_back(Caught); |
| 4148 | |
Douglas Gregor | 8f5e3dd | 2010-04-23 22:50:49 +0000 | [diff] [blame] | 4149 | const ObjCAtTryStmt* AtTryStmt = cast<ObjCAtTryStmt>(&S); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4150 | |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 4151 | bool HasFinally = (AtTryStmt->getFinallyStmt() != nullptr); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4152 | |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 4153 | llvm::BasicBlock *CatchBlock = nullptr; |
| 4154 | llvm::BasicBlock *CatchHandler = nullptr; |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4155 | if (HasFinally) { |
John McCall | 9e2213d | 2010-10-04 23:42:51 +0000 | [diff] [blame] | 4156 | // Save the currently-propagating exception before |
| 4157 | // objc_exception_try_enter clears the exception slot. |
| 4158 | PropagatingExnVar = CGF.CreateTempAlloca(Caught->getType(), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4159 | CGF.getPointerAlign(), |
John McCall | 9e2213d | 2010-10-04 23:42:51 +0000 | [diff] [blame] | 4160 | "propagating_exception"); |
| 4161 | CGF.Builder.CreateStore(Caught, PropagatingExnVar); |
| 4162 | |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4163 | // Enter a new exception try block (in case a @catch block |
| 4164 | // throws an exception). |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4165 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getExceptionTryEnterFn(), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4166 | ExceptionData.getPointer()); |
Anders Carlsson | 80f2567 | 2008-09-09 17:59:25 +0000 | [diff] [blame] | 4167 | |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4168 | llvm::CallInst *SetJmpResult = |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4169 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getSetJmpFn(), |
| 4170 | SetJmpBuffer, "setjmp.result"); |
Bill Wendling | 6446c3e | 2011-12-19 23:53:28 +0000 | [diff] [blame] | 4171 | SetJmpResult->setCanReturnTwice(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4172 | |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4173 | llvm::Value *Threw = |
| 4174 | CGF.Builder.CreateIsNotNull(SetJmpResult, "did_catch_exception"); |
| 4175 | |
| 4176 | CatchBlock = CGF.createBasicBlock("catch"); |
| 4177 | CatchHandler = CGF.createBasicBlock("catch_for_catch"); |
| 4178 | CGF.Builder.CreateCondBr(Threw, CatchHandler, CatchBlock); |
| 4179 | |
| 4180 | CGF.EmitBlock(CatchBlock); |
| 4181 | } |
| 4182 | |
| 4183 | CGF.Builder.CreateStore(CGF.Builder.getInt1(HasFinally), CallTryExitVar); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4184 | |
Daniel Dunbar | 55e4072 | 2008-09-27 07:03:52 +0000 | [diff] [blame] | 4185 | // Handle catch list. As a special case we check if everything is |
| 4186 | // matched and avoid generating code for falling off the end if |
| 4187 | // so. |
| 4188 | bool AllMatched = false; |
Douglas Gregor | 8f5e3dd | 2010-04-23 22:50:49 +0000 | [diff] [blame] | 4189 | for (unsigned I = 0, N = AtTryStmt->getNumCatchStmts(); I != N; ++I) { |
| 4190 | const ObjCAtCatchStmt *CatchStmt = AtTryStmt->getCatchStmt(I); |
Anders Carlsson | 80f2567 | 2008-09-09 17:59:25 +0000 | [diff] [blame] | 4191 | |
Douglas Gregor | c00d8e1 | 2010-04-26 16:46:50 +0000 | [diff] [blame] | 4192 | const VarDecl *CatchParam = CatchStmt->getCatchParamDecl(); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 4193 | const ObjCObjectPointerType *OPT = nullptr; |
Daniel Dunbar | 129271a | 2008-09-27 07:36:24 +0000 | [diff] [blame] | 4194 | |
Anders Carlsson | 80f2567 | 2008-09-09 17:59:25 +0000 | [diff] [blame] | 4195 | // catch(...) always matches. |
Daniel Dunbar | 55e4072 | 2008-09-27 07:03:52 +0000 | [diff] [blame] | 4196 | if (!CatchParam) { |
| 4197 | AllMatched = true; |
| 4198 | } else { |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 4199 | OPT = CatchParam->getType()->getAs<ObjCObjectPointerType>(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4200 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4201 | // catch(id e) always matches under this ABI, since only |
| 4202 | // ObjC exceptions end up here in the first place. |
Daniel Dunbar | 97f61d1 | 2008-09-27 22:21:14 +0000 | [diff] [blame] | 4203 | // FIXME: For the time being we also match id<X>; this should |
| 4204 | // be rejected by Sema instead. |
Eli Friedman | 818e96f | 2009-07-11 00:57:02 +0000 | [diff] [blame] | 4205 | if (OPT && (OPT->isObjCIdType() || OPT->isObjCQualifiedIdType())) |
Daniel Dunbar | 55e4072 | 2008-09-27 07:03:52 +0000 | [diff] [blame] | 4206 | AllMatched = true; |
Anders Carlsson | 80f2567 | 2008-09-09 17:59:25 +0000 | [diff] [blame] | 4207 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4208 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4209 | // If this is a catch-all, we don't need to test anything. |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4210 | if (AllMatched) { |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4211 | CodeGenFunction::RunCleanupsScope CatchVarCleanups(CGF); |
| 4212 | |
Anders Carlsson | dde0a94 | 2008-09-11 09:15:33 +0000 | [diff] [blame] | 4213 | if (CatchParam) { |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 4214 | CGF.EmitAutoVarDecl(*CatchParam); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 4215 | assert(CGF.HaveInsertPoint() && "DeclStmt destroyed insert point?"); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4216 | |
| 4217 | // These types work out because ConvertType(id) == i8*. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4218 | EmitInitOfCatchParam(CGF, Caught, CatchParam); |
Anders Carlsson | dde0a94 | 2008-09-11 09:15:33 +0000 | [diff] [blame] | 4219 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4220 | |
Anders Carlsson | dde0a94 | 2008-09-11 09:15:33 +0000 | [diff] [blame] | 4221 | CGF.EmitStmt(CatchStmt->getCatchBody()); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4222 | |
| 4223 | // The scope of the catch variable ends right here. |
| 4224 | CatchVarCleanups.ForceCleanup(); |
| 4225 | |
Anders Carlsson | f3a79a9 | 2009-02-09 20:38:58 +0000 | [diff] [blame] | 4226 | CGF.EmitBranchThroughCleanup(FinallyEnd); |
Anders Carlsson | 80f2567 | 2008-09-09 17:59:25 +0000 | [diff] [blame] | 4227 | break; |
| 4228 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4229 | |
Steve Naroff | 14108da | 2009-07-10 23:34:53 +0000 | [diff] [blame] | 4230 | assert(OPT && "Unexpected non-object pointer type in @catch"); |
John McCall | 506b57e | 2010-05-17 21:00:27 +0000 | [diff] [blame] | 4231 | const ObjCObjectType *ObjTy = OPT->getObjectType(); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4232 | |
| 4233 | // FIXME: @catch (Class c) ? |
John McCall | 506b57e | 2010-05-17 21:00:27 +0000 | [diff] [blame] | 4234 | ObjCInterfaceDecl *IDecl = ObjTy->getInterface(); |
| 4235 | assert(IDecl && "Catch parameter must have Objective-C type!"); |
Anders Carlsson | 80f2567 | 2008-09-09 17:59:25 +0000 | [diff] [blame] | 4236 | |
| 4237 | // Check if the @catch block matches the exception object. |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4238 | llvm::Value *Class = EmitClassRef(CGF, IDecl); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4239 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4240 | llvm::Value *matchArgs[] = { Class, Caught }; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4241 | llvm::CallInst *Match = |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4242 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getExceptionMatchFn(), |
| 4243 | matchArgs, "match"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4244 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4245 | llvm::BasicBlock *MatchedBlock = CGF.createBasicBlock("match"); |
| 4246 | llvm::BasicBlock *NextCatchBlock = CGF.createBasicBlock("catch.next"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4247 | |
| 4248 | CGF.Builder.CreateCondBr(CGF.Builder.CreateIsNotNull(Match, "matched"), |
Daniel Dunbar | e4b5ee0 | 2008-09-27 23:30:04 +0000 | [diff] [blame] | 4249 | MatchedBlock, NextCatchBlock); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4250 | |
Anders Carlsson | 80f2567 | 2008-09-09 17:59:25 +0000 | [diff] [blame] | 4251 | // Emit the @catch block. |
| 4252 | CGF.EmitBlock(MatchedBlock); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4253 | |
| 4254 | // Collect any cleanups for the catch variable. The scope lasts until |
| 4255 | // the end of the catch body. |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4256 | CodeGenFunction::RunCleanupsScope CatchVarCleanups(CGF); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4257 | |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 4258 | CGF.EmitAutoVarDecl(*CatchParam); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 4259 | assert(CGF.HaveInsertPoint() && "DeclStmt destroyed insert point?"); |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 4260 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4261 | // Initialize the catch variable. |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4262 | llvm::Value *Tmp = |
| 4263 | CGF.Builder.CreateBitCast(Caught, |
Benjamin Kramer | 578faa8 | 2011-09-27 21:06:10 +0000 | [diff] [blame] | 4264 | CGF.ConvertType(CatchParam->getType())); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4265 | EmitInitOfCatchParam(CGF, Tmp, CatchParam); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4266 | |
Anders Carlsson | dde0a94 | 2008-09-11 09:15:33 +0000 | [diff] [blame] | 4267 | CGF.EmitStmt(CatchStmt->getCatchBody()); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4268 | |
| 4269 | // We're done with the catch variable. |
| 4270 | CatchVarCleanups.ForceCleanup(); |
| 4271 | |
Anders Carlsson | f3a79a9 | 2009-02-09 20:38:58 +0000 | [diff] [blame] | 4272 | CGF.EmitBranchThroughCleanup(FinallyEnd); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4273 | |
Anders Carlsson | 80f2567 | 2008-09-09 17:59:25 +0000 | [diff] [blame] | 4274 | CGF.EmitBlock(NextCatchBlock); |
| 4275 | } |
| 4276 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4277 | CGF.ObjCEHValueStack.pop_back(); |
| 4278 | |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4279 | // If nothing wanted anything to do with the caught exception, |
| 4280 | // kill the extract call. |
| 4281 | if (Caught->use_empty()) |
| 4282 | Caught->eraseFromParent(); |
| 4283 | |
| 4284 | if (!AllMatched) |
| 4285 | CGF.EmitBranchThroughCleanup(FinallyRethrow); |
| 4286 | |
| 4287 | if (HasFinally) { |
| 4288 | // Emit the exception handler for the @catch blocks. |
| 4289 | CGF.EmitBlock(CatchHandler); |
| 4290 | |
| 4291 | // In theory we might now need a write hazard, but actually it's |
| 4292 | // unnecessary because there's no local-accessing code between |
| 4293 | // the try's write hazard and here. |
| 4294 | //Hazards.emitWriteHazard(); |
| 4295 | |
John McCall | 9e2213d | 2010-10-04 23:42:51 +0000 | [diff] [blame] | 4296 | // Extract the new exception and save it to the |
| 4297 | // propagating-exception slot. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4298 | assert(PropagatingExnVar.isValid()); |
John McCall | 9e2213d | 2010-10-04 23:42:51 +0000 | [diff] [blame] | 4299 | llvm::CallInst *NewCaught = |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4300 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getExceptionExtractFn(), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4301 | ExceptionData.getPointer(), "caught"); |
John McCall | 9e2213d | 2010-10-04 23:42:51 +0000 | [diff] [blame] | 4302 | CGF.Builder.CreateStore(NewCaught, PropagatingExnVar); |
| 4303 | |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4304 | // Don't pop the catch handler; the throw already did. |
| 4305 | CGF.Builder.CreateStore(CGF.Builder.getFalse(), CallTryExitVar); |
Anders Carlsson | f3a79a9 | 2009-02-09 20:38:58 +0000 | [diff] [blame] | 4306 | CGF.EmitBranchThroughCleanup(FinallyRethrow); |
Daniel Dunbar | 55e4072 | 2008-09-27 07:03:52 +0000 | [diff] [blame] | 4307 | } |
Anders Carlsson | 80f2567 | 2008-09-09 17:59:25 +0000 | [diff] [blame] | 4308 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4309 | |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 4310 | // Insert read hazards as required in the new blocks. |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4311 | Hazards.emitHazardsInNewBlocks(); |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 4312 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4313 | // Pop the cleanup. |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4314 | CGF.Builder.restoreIP(TryFallthroughIP); |
| 4315 | if (CGF.HaveInsertPoint()) |
| 4316 | CGF.Builder.CreateStore(CGF.Builder.getTrue(), CallTryExitVar); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4317 | CGF.PopCleanupBlock(); |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4318 | CGF.EmitBlock(FinallyEnd.getBlock(), true); |
Anders Carlsson | f3a79a9 | 2009-02-09 20:38:58 +0000 | [diff] [blame] | 4319 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4320 | // Emit the rethrow block. |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 4321 | CGBuilderTy::InsertPoint SavedIP = CGF.Builder.saveAndClearIP(); |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 4322 | CGF.EmitBlock(FinallyRethrow.getBlock(), true); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4323 | if (CGF.HaveInsertPoint()) { |
John McCall | 9e2213d | 2010-10-04 23:42:51 +0000 | [diff] [blame] | 4324 | // If we have a propagating-exception variable, check it. |
| 4325 | llvm::Value *PropagatingExn; |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4326 | if (PropagatingExnVar.isValid()) { |
John McCall | 9e2213d | 2010-10-04 23:42:51 +0000 | [diff] [blame] | 4327 | PropagatingExn = CGF.Builder.CreateLoad(PropagatingExnVar); |
John McCall | 0b25172 | 2010-08-04 05:59:32 +0000 | [diff] [blame] | 4328 | |
John McCall | 9e2213d | 2010-10-04 23:42:51 +0000 | [diff] [blame] | 4329 | // Otherwise, just look in the buffer for the exception to throw. |
| 4330 | } else { |
| 4331 | llvm::CallInst *Caught = |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4332 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getExceptionExtractFn(), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4333 | ExceptionData.getPointer()); |
John McCall | 9e2213d | 2010-10-04 23:42:51 +0000 | [diff] [blame] | 4334 | PropagatingExn = Caught; |
| 4335 | } |
| 4336 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4337 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getExceptionThrowFn(), |
| 4338 | PropagatingExn); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4339 | CGF.Builder.CreateUnreachable(); |
Fariborz Jahanian | f2878e5 | 2008-11-21 19:21:53 +0000 | [diff] [blame] | 4340 | } |
Anders Carlsson | 80f2567 | 2008-09-09 17:59:25 +0000 | [diff] [blame] | 4341 | |
John McCall | 87bb582 | 2010-07-31 23:20:56 +0000 | [diff] [blame] | 4342 | CGF.Builder.restoreIP(SavedIP); |
Anders Carlsson | 64d5d6c | 2008-09-09 10:04:29 +0000 | [diff] [blame] | 4343 | } |
| 4344 | |
| 4345 | void CGObjCMac::EmitThrowStmt(CodeGen::CodeGenFunction &CGF, |
Fariborz Jahanian | 6a3c70e | 2013-01-10 19:02:56 +0000 | [diff] [blame] | 4346 | const ObjCAtThrowStmt &S, |
| 4347 | bool ClearInsertionPoint) { |
Anders Carlsson | 2b1e311 | 2008-09-09 16:16:55 +0000 | [diff] [blame] | 4348 | llvm::Value *ExceptionAsObject; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4349 | |
Anders Carlsson | 2b1e311 | 2008-09-09 16:16:55 +0000 | [diff] [blame] | 4350 | if (const Expr *ThrowExpr = S.getThrowExpr()) { |
John McCall | 2b014d6 | 2011-10-01 10:32:24 +0000 | [diff] [blame] | 4351 | llvm::Value *Exception = CGF.EmitObjCThrowOperand(ThrowExpr); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4352 | ExceptionAsObject = |
Benjamin Kramer | 578faa8 | 2011-09-27 21:06:10 +0000 | [diff] [blame] | 4353 | CGF.Builder.CreateBitCast(Exception, ObjCTypes.ObjectPtrTy); |
Anders Carlsson | 2b1e311 | 2008-09-09 16:16:55 +0000 | [diff] [blame] | 4354 | } else { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4355 | assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 4356 | "Unexpected rethrow outside @catch block."); |
Anders Carlsson | 273558f | 2009-02-07 21:37:21 +0000 | [diff] [blame] | 4357 | ExceptionAsObject = CGF.ObjCEHValueStack.back(); |
Anders Carlsson | 2b1e311 | 2008-09-09 16:16:55 +0000 | [diff] [blame] | 4358 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4359 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4360 | CGF.EmitRuntimeCall(ObjCTypes.getExceptionThrowFn(), ExceptionAsObject) |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 4361 | ->setDoesNotReturn(); |
Anders Carlsson | 80f2567 | 2008-09-09 17:59:25 +0000 | [diff] [blame] | 4362 | CGF.Builder.CreateUnreachable(); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 4363 | |
| 4364 | // Clear the insertion point to indicate we are in unreachable code. |
Fariborz Jahanian | 6a3c70e | 2013-01-10 19:02:56 +0000 | [diff] [blame] | 4365 | if (ClearInsertionPoint) |
| 4366 | CGF.Builder.ClearInsertionPoint(); |
Anders Carlsson | 64d5d6c | 2008-09-09 10:04:29 +0000 | [diff] [blame] | 4367 | } |
| 4368 | |
Fariborz Jahanian | 3e283e3 | 2008-11-18 22:37:34 +0000 | [diff] [blame] | 4369 | /// EmitObjCWeakRead - Code gen for loading value of a __weak |
Fariborz Jahanian | 6dc2317 | 2008-11-18 21:45:40 +0000 | [diff] [blame] | 4370 | /// object: objc_read_weak (id *src) |
| 4371 | /// |
Fariborz Jahanian | 3e283e3 | 2008-11-18 22:37:34 +0000 | [diff] [blame] | 4372 | llvm::Value * CGObjCMac::EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4373 | Address AddrWeakObj) { |
| 4374 | llvm::Type* DestTy = AddrWeakObj.getElementType(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4375 | AddrWeakObj = CGF.Builder.CreateBitCast(AddrWeakObj, |
| 4376 | ObjCTypes.PtrObjectPtrTy); |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4377 | llvm::Value *read_weak = |
| 4378 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getGcReadWeakFn(), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4379 | AddrWeakObj.getPointer(), "weakread"); |
Eli Friedman | 8339b35 | 2009-03-07 03:57:15 +0000 | [diff] [blame] | 4380 | read_weak = CGF.Builder.CreateBitCast(read_weak, DestTy); |
Fariborz Jahanian | 6dc2317 | 2008-11-18 21:45:40 +0000 | [diff] [blame] | 4381 | return read_weak; |
| 4382 | } |
| 4383 | |
Fariborz Jahanian | 3e283e3 | 2008-11-18 22:37:34 +0000 | [diff] [blame] | 4384 | /// EmitObjCWeakAssign - Code gen for assigning to a __weak object. |
| 4385 | /// objc_assign_weak (id src, id *dst) |
| 4386 | /// |
| 4387 | void CGObjCMac::EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4388 | llvm::Value *src, Address dst) { |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 4389 | llvm::Type * SrcTy = src->getType(); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 4390 | if (!isa<llvm::PointerType>(SrcTy)) { |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 4391 | unsigned Size = CGM.getDataLayout().getTypeAllocSize(SrcTy); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 4392 | assert(Size <= 8 && "does not support size > 8"); |
| 4393 | src = (Size == 4) ? CGF.Builder.CreateBitCast(src, ObjCTypes.IntTy) |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4394 | : CGF.Builder.CreateBitCast(src, ObjCTypes.LongLongTy); |
Fariborz Jahanian | 3b8a652 | 2009-03-13 00:42:52 +0000 | [diff] [blame] | 4395 | src = CGF.Builder.CreateIntToPtr(src, ObjCTypes.Int8PtrTy); |
| 4396 | } |
Fariborz Jahanian | dbd32c2 | 2008-11-19 17:34:06 +0000 | [diff] [blame] | 4397 | src = CGF.Builder.CreateBitCast(src, ObjCTypes.ObjectPtrTy); |
| 4398 | dst = CGF.Builder.CreateBitCast(dst, ObjCTypes.PtrObjectPtrTy); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4399 | llvm::Value *args[] = { src, dst.getPointer() }; |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4400 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getGcAssignWeakFn(), |
| 4401 | args, "weakassign"); |
Fariborz Jahanian | 3e283e3 | 2008-11-18 22:37:34 +0000 | [diff] [blame] | 4402 | } |
| 4403 | |
Fariborz Jahanian | 5862650 | 2008-11-19 00:59:10 +0000 | [diff] [blame] | 4404 | /// EmitObjCGlobalAssign - Code gen for assigning to a __strong object. |
| 4405 | /// objc_assign_global (id src, id *dst) |
| 4406 | /// |
| 4407 | void CGObjCMac::EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4408 | llvm::Value *src, Address dst, |
Fariborz Jahanian | 021a7a6 | 2010-07-20 20:30:03 +0000 | [diff] [blame] | 4409 | bool threadlocal) { |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 4410 | llvm::Type * SrcTy = src->getType(); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 4411 | if (!isa<llvm::PointerType>(SrcTy)) { |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 4412 | unsigned Size = CGM.getDataLayout().getTypeAllocSize(SrcTy); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 4413 | assert(Size <= 8 && "does not support size > 8"); |
| 4414 | src = (Size == 4) ? CGF.Builder.CreateBitCast(src, ObjCTypes.IntTy) |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4415 | : CGF.Builder.CreateBitCast(src, ObjCTypes.LongLongTy); |
Fariborz Jahanian | 3b8a652 | 2009-03-13 00:42:52 +0000 | [diff] [blame] | 4416 | src = CGF.Builder.CreateIntToPtr(src, ObjCTypes.Int8PtrTy); |
| 4417 | } |
Fariborz Jahanian | dbd32c2 | 2008-11-19 17:34:06 +0000 | [diff] [blame] | 4418 | src = CGF.Builder.CreateBitCast(src, ObjCTypes.ObjectPtrTy); |
| 4419 | dst = CGF.Builder.CreateBitCast(dst, ObjCTypes.PtrObjectPtrTy); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4420 | llvm::Value *args[] = { src, dst.getPointer() }; |
Fariborz Jahanian | 021a7a6 | 2010-07-20 20:30:03 +0000 | [diff] [blame] | 4421 | if (!threadlocal) |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4422 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getGcAssignGlobalFn(), |
| 4423 | args, "globalassign"); |
Fariborz Jahanian | 021a7a6 | 2010-07-20 20:30:03 +0000 | [diff] [blame] | 4424 | else |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4425 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getGcAssignThreadLocalFn(), |
| 4426 | args, "threadlocalassign"); |
Fariborz Jahanian | 5862650 | 2008-11-19 00:59:10 +0000 | [diff] [blame] | 4427 | } |
| 4428 | |
Fariborz Jahanian | 7eda836 | 2008-11-20 19:23:36 +0000 | [diff] [blame] | 4429 | /// EmitObjCIvarAssign - Code gen for assigning to a __strong object. |
Fariborz Jahanian | 6c7a1f3 | 2009-09-24 22:25:38 +0000 | [diff] [blame] | 4430 | /// objc_assign_ivar (id src, id *dst, ptrdiff_t ivaroffset) |
Fariborz Jahanian | 7eda836 | 2008-11-20 19:23:36 +0000 | [diff] [blame] | 4431 | /// |
| 4432 | void CGObjCMac::EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4433 | llvm::Value *src, Address dst, |
Fariborz Jahanian | 6c7a1f3 | 2009-09-24 22:25:38 +0000 | [diff] [blame] | 4434 | llvm::Value *ivarOffset) { |
| 4435 | assert(ivarOffset && "EmitObjCIvarAssign - ivarOffset is NULL"); |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 4436 | llvm::Type * SrcTy = src->getType(); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 4437 | if (!isa<llvm::PointerType>(SrcTy)) { |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 4438 | unsigned Size = CGM.getDataLayout().getTypeAllocSize(SrcTy); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 4439 | assert(Size <= 8 && "does not support size > 8"); |
| 4440 | src = (Size == 4) ? CGF.Builder.CreateBitCast(src, ObjCTypes.IntTy) |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4441 | : CGF.Builder.CreateBitCast(src, ObjCTypes.LongLongTy); |
Fariborz Jahanian | 3b8a652 | 2009-03-13 00:42:52 +0000 | [diff] [blame] | 4442 | src = CGF.Builder.CreateIntToPtr(src, ObjCTypes.Int8PtrTy); |
| 4443 | } |
Fariborz Jahanian | 7eda836 | 2008-11-20 19:23:36 +0000 | [diff] [blame] | 4444 | src = CGF.Builder.CreateBitCast(src, ObjCTypes.ObjectPtrTy); |
| 4445 | dst = CGF.Builder.CreateBitCast(dst, ObjCTypes.PtrObjectPtrTy); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4446 | llvm::Value *args[] = { src, dst.getPointer(), ivarOffset }; |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4447 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getGcAssignIvarFn(), args); |
Fariborz Jahanian | 7eda836 | 2008-11-20 19:23:36 +0000 | [diff] [blame] | 4448 | } |
| 4449 | |
Fariborz Jahanian | 5862650 | 2008-11-19 00:59:10 +0000 | [diff] [blame] | 4450 | /// EmitObjCStrongCastAssign - Code gen for assigning to a __strong cast object. |
| 4451 | /// objc_assign_strongCast (id src, id *dst) |
| 4452 | /// |
| 4453 | void CGObjCMac::EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4454 | llvm::Value *src, Address dst) { |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 4455 | llvm::Type * SrcTy = src->getType(); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 4456 | if (!isa<llvm::PointerType>(SrcTy)) { |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 4457 | unsigned Size = CGM.getDataLayout().getTypeAllocSize(SrcTy); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 4458 | assert(Size <= 8 && "does not support size > 8"); |
| 4459 | src = (Size == 4) ? CGF.Builder.CreateBitCast(src, ObjCTypes.IntTy) |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4460 | : CGF.Builder.CreateBitCast(src, ObjCTypes.LongLongTy); |
Fariborz Jahanian | 3b8a652 | 2009-03-13 00:42:52 +0000 | [diff] [blame] | 4461 | src = CGF.Builder.CreateIntToPtr(src, ObjCTypes.Int8PtrTy); |
| 4462 | } |
Fariborz Jahanian | dbd32c2 | 2008-11-19 17:34:06 +0000 | [diff] [blame] | 4463 | src = CGF.Builder.CreateBitCast(src, ObjCTypes.ObjectPtrTy); |
| 4464 | dst = CGF.Builder.CreateBitCast(dst, ObjCTypes.PtrObjectPtrTy); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4465 | llvm::Value *args[] = { src, dst.getPointer() }; |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4466 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getGcAssignStrongCastFn(), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4467 | args, "strongassign"); |
Fariborz Jahanian | 5862650 | 2008-11-19 00:59:10 +0000 | [diff] [blame] | 4468 | } |
| 4469 | |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 4470 | void CGObjCMac::EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4471 | Address DestPtr, |
| 4472 | Address SrcPtr, |
Fariborz Jahanian | 55bcace | 2010-06-15 22:44:06 +0000 | [diff] [blame] | 4473 | llvm::Value *size) { |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 4474 | SrcPtr = CGF.Builder.CreateBitCast(SrcPtr, ObjCTypes.Int8PtrTy); |
| 4475 | DestPtr = CGF.Builder.CreateBitCast(DestPtr, ObjCTypes.Int8PtrTy); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4476 | llvm::Value *args[] = { DestPtr.getPointer(), SrcPtr.getPointer(), size }; |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4477 | CGF.EmitNounwindRuntimeCall(ObjCTypes.GcMemmoveCollectableFn(), args); |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 4478 | } |
| 4479 | |
Fariborz Jahanian | 0bb2036 | 2009-02-02 20:02:29 +0000 | [diff] [blame] | 4480 | /// EmitObjCValueForIvar - Code Gen for ivar reference. |
| 4481 | /// |
Fariborz Jahanian | 598d3f6 | 2009-02-03 19:03:09 +0000 | [diff] [blame] | 4482 | LValue CGObjCMac::EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, |
| 4483 | QualType ObjectTy, |
| 4484 | llvm::Value *BaseValue, |
| 4485 | const ObjCIvarDecl *Ivar, |
Fariborz Jahanian | 598d3f6 | 2009-02-03 19:03:09 +0000 | [diff] [blame] | 4486 | unsigned CVRQualifiers) { |
John McCall | c12c5bb | 2010-05-15 11:32:37 +0000 | [diff] [blame] | 4487 | const ObjCInterfaceDecl *ID = |
| 4488 | ObjectTy->getAs<ObjCObjectType>()->getInterface(); |
Daniel Dunbar | 9777687 | 2009-04-22 07:32:20 +0000 | [diff] [blame] | 4489 | return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, |
| 4490 | EmitIvarOffset(CGF, ID, Ivar)); |
Fariborz Jahanian | 0bb2036 | 2009-02-02 20:02:29 +0000 | [diff] [blame] | 4491 | } |
| 4492 | |
Fariborz Jahanian | f63aa3f | 2009-02-10 19:02:04 +0000 | [diff] [blame] | 4493 | llvm::Value *CGObjCMac::EmitIvarOffset(CodeGen::CodeGenFunction &CGF, |
Daniel Dunbar | 2a03192 | 2009-04-22 05:08:15 +0000 | [diff] [blame] | 4494 | const ObjCInterfaceDecl *Interface, |
Fariborz Jahanian | f63aa3f | 2009-02-10 19:02:04 +0000 | [diff] [blame] | 4495 | const ObjCIvarDecl *Ivar) { |
Eli Friedman | e5b4666 | 2012-11-06 22:15:52 +0000 | [diff] [blame] | 4496 | uint64_t Offset = ComputeIvarBaseOffset(CGM, Interface, Ivar); |
| 4497 | return llvm::ConstantInt::get( |
| 4498 | CGM.getTypes().ConvertType(CGM.getContext().LongTy), |
| 4499 | Offset); |
Fariborz Jahanian | f63aa3f | 2009-02-10 19:02:04 +0000 | [diff] [blame] | 4500 | } |
| 4501 | |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 4502 | /* *** Private Interface *** */ |
| 4503 | |
| 4504 | /// EmitImageInfo - Emit the image info marker used to encode some module |
| 4505 | /// level information. |
| 4506 | /// |
| 4507 | /// See: <rdr://4810609&4810587&4810587> |
| 4508 | /// struct IMAGE_INFO { |
| 4509 | /// unsigned version; |
| 4510 | /// unsigned flags; |
| 4511 | /// }; |
| 4512 | enum ImageInfoFlags { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 4513 | eImageInfo_FixAndContinue = (1 << 0), // This flag is no longer set by clang. |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4514 | eImageInfo_GarbageCollected = (1 << 1), |
| 4515 | eImageInfo_GCOnly = (1 << 2), |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 4516 | eImageInfo_OptimizedByDyld = (1 << 3), // This flag is set by the dyld shared cache. |
Daniel Dunbar | c7c6dc0 | 2009-04-20 07:11:47 +0000 | [diff] [blame] | 4517 | |
Daniel Dunbar | fce176b | 2010-04-25 20:39:01 +0000 | [diff] [blame] | 4518 | // A flag indicating that the module has no instances of a @synthesize of a |
| 4519 | // superclass variable. <rdar://problem/6803242> |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 4520 | eImageInfo_CorrectedSynthesize = (1 << 4), // This flag is no longer set by clang. |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 4521 | eImageInfo_ImageIsSimulated = (1 << 5), |
| 4522 | eImageInfo_ClassProperties = (1 << 6) |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 4523 | }; |
| 4524 | |
Daniel Dunbar | fce176b | 2010-04-25 20:39:01 +0000 | [diff] [blame] | 4525 | void CGObjCCommonMac::EmitImageInfo() { |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 4526 | unsigned version = 0; // Version is unused? |
Bill Wendling | 3973acc | 2012-02-16 01:13:30 +0000 | [diff] [blame] | 4527 | const char *Section = (ObjCABI == 1) ? |
| 4528 | "__OBJC, __image_info,regular" : |
| 4529 | "__DATA, __objc_imageinfo, regular, no_dead_strip"; |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 4530 | |
Bill Wendling | 3973acc | 2012-02-16 01:13:30 +0000 | [diff] [blame] | 4531 | // Generate module-level named metadata to convey this information to the |
| 4532 | // linker and code-gen. |
| 4533 | llvm::Module &Mod = CGM.getModule(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4534 | |
Bill Wendling | 3973acc | 2012-02-16 01:13:30 +0000 | [diff] [blame] | 4535 | // Add the ObjC ABI version to the module flags. |
| 4536 | Mod.addModuleFlag(llvm::Module::Error, "Objective-C Version", ObjCABI); |
| 4537 | Mod.addModuleFlag(llvm::Module::Error, "Objective-C Image Info Version", |
| 4538 | version); |
| 4539 | Mod.addModuleFlag(llvm::Module::Error, "Objective-C Image Info Section", |
| 4540 | llvm::MDString::get(VMContext,Section)); |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 4541 | |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 4542 | if (CGM.getLangOpts().getGC() == LangOptions::NonGC) { |
Bill Wendling | 3973acc | 2012-02-16 01:13:30 +0000 | [diff] [blame] | 4543 | // Non-GC overrides those files which specify GC. |
| 4544 | Mod.addModuleFlag(llvm::Module::Override, |
| 4545 | "Objective-C Garbage Collection", (uint32_t)0); |
| 4546 | } else { |
| 4547 | // Add the ObjC garbage collection value. |
| 4548 | Mod.addModuleFlag(llvm::Module::Error, |
| 4549 | "Objective-C Garbage Collection", |
| 4550 | eImageInfo_GarbageCollected); |
Daniel Dunbar | 63c5b50 | 2009-03-09 21:49:58 +0000 | [diff] [blame] | 4551 | |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 4552 | if (CGM.getLangOpts().getGC() == LangOptions::GCOnly) { |
Bill Wendling | 3973acc | 2012-02-16 01:13:30 +0000 | [diff] [blame] | 4553 | // Add the ObjC GC Only value. |
| 4554 | Mod.addModuleFlag(llvm::Module::Error, "Objective-C GC Only", |
| 4555 | eImageInfo_GCOnly); |
| 4556 | |
| 4557 | // Require that GC be specified and set to eImageInfo_GarbageCollected. |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 4558 | llvm::Metadata *Ops[2] = { |
| 4559 | llvm::MDString::get(VMContext, "Objective-C Garbage Collection"), |
| 4560 | llvm::ConstantAsMetadata::get(llvm::ConstantInt::get( |
| 4561 | llvm::Type::getInt32Ty(VMContext), eImageInfo_GarbageCollected))}; |
Bill Wendling | 3973acc | 2012-02-16 01:13:30 +0000 | [diff] [blame] | 4562 | Mod.addModuleFlag(llvm::Module::Require, "Objective-C GC Only", |
| 4563 | llvm::MDNode::get(VMContext, Ops)); |
| 4564 | } |
| 4565 | } |
Bill Wendling | 0982251 | 2012-04-24 11:04:57 +0000 | [diff] [blame] | 4566 | |
| 4567 | // Indicate whether we're compiling this to run on a simulator. |
| 4568 | const llvm::Triple &Triple = CGM.getTarget().getTriple(); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4569 | if ((Triple.isiOS() || Triple.isWatchOS()) && |
Bill Wendling | 0982251 | 2012-04-24 11:04:57 +0000 | [diff] [blame] | 4570 | (Triple.getArch() == llvm::Triple::x86 || |
| 4571 | Triple.getArch() == llvm::Triple::x86_64)) |
| 4572 | Mod.addModuleFlag(llvm::Module::Error, "Objective-C Is Simulated", |
| 4573 | eImageInfo_ImageIsSimulated); |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 4574 | |
| 4575 | // Indicate whether we are generating class properties. |
| 4576 | Mod.addModuleFlag(llvm::Module::Error, "Objective-C Class Properties", |
| 4577 | eImageInfo_ClassProperties); |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 4578 | } |
| 4579 | |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 4580 | // struct objc_module { |
| 4581 | // unsigned long version; |
| 4582 | // unsigned long size; |
| 4583 | // const char *name; |
| 4584 | // Symtab symtab; |
| 4585 | // }; |
| 4586 | |
| 4587 | // FIXME: Get from somewhere |
| 4588 | static const int ModuleVersion = 7; |
| 4589 | |
| 4590 | void CGObjCMac::EmitModuleInfo() { |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 4591 | uint64_t Size = CGM.getDataLayout().getTypeAllocSize(ObjCTypes.ModuleTy); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4592 | |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 4593 | llvm::Constant *Values[] = { |
| 4594 | llvm::ConstantInt::get(ObjCTypes.LongTy, ModuleVersion), |
| 4595 | llvm::ConstantInt::get(ObjCTypes.LongTy, Size), |
| 4596 | // This used to be the filename, now it is unused. <rdr://4327263> |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 4597 | GetClassName(StringRef("")), |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 4598 | EmitModuleSymbols() |
| 4599 | }; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 4600 | CreateMetadataVar("OBJC_MODULES", |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 4601 | llvm::ConstantStruct::get(ObjCTypes.ModuleTy, Values), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4602 | "__OBJC,__module_info,regular,no_dead_strip", |
| 4603 | CGM.getPointerAlign(), true); |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 4604 | } |
| 4605 | |
| 4606 | llvm::Constant *CGObjCMac::EmitModuleSymbols() { |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 4607 | unsigned NumClasses = DefinedClasses.size(); |
| 4608 | unsigned NumCategories = DefinedCategories.size(); |
| 4609 | |
Daniel Dunbar | 242d4dc | 2008-08-25 06:02:07 +0000 | [diff] [blame] | 4610 | // Return null if no symbols were defined. |
| 4611 | if (!NumClasses && !NumCategories) |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 4612 | return llvm::Constant::getNullValue(ObjCTypes.SymtabPtrTy); |
Daniel Dunbar | 242d4dc | 2008-08-25 06:02:07 +0000 | [diff] [blame] | 4613 | |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 4614 | llvm::Constant *Values[5]; |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 4615 | Values[0] = llvm::ConstantInt::get(ObjCTypes.LongTy, 0); |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 4616 | Values[1] = llvm::Constant::getNullValue(ObjCTypes.SelectorPtrTy); |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 4617 | Values[2] = llvm::ConstantInt::get(ObjCTypes.ShortTy, NumClasses); |
| 4618 | Values[3] = llvm::ConstantInt::get(ObjCTypes.ShortTy, NumCategories); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 4619 | |
Daniel Dunbar | 86e253a | 2008-08-22 20:34:54 +0000 | [diff] [blame] | 4620 | // The runtime expects exactly the list of defined classes followed |
| 4621 | // by the list of defined categories, in a single array. |
Chris Lattner | 0b23971 | 2012-02-06 22:16:34 +0000 | [diff] [blame] | 4622 | SmallVector<llvm::Constant*, 8> Symbols(NumClasses + NumCategories); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 4623 | for (unsigned i=0; i<NumClasses; i++) { |
| 4624 | const ObjCInterfaceDecl *ID = ImplementedClasses[i]; |
| 4625 | assert(ID); |
| 4626 | if (ObjCImplementationDecl *IMP = ID->getImplementation()) |
| 4627 | // We are implementing a weak imported interface. Give it external linkage |
| 4628 | if (ID->isWeakImported() && !IMP->isWeakImported()) |
| 4629 | DefinedClasses[i]->setLinkage(llvm::GlobalVariable::ExternalLinkage); |
| 4630 | |
Owen Anderson | 3c4972d | 2009-07-29 18:54:39 +0000 | [diff] [blame] | 4631 | Symbols[i] = llvm::ConstantExpr::getBitCast(DefinedClasses[i], |
Daniel Dunbar | 86e253a | 2008-08-22 20:34:54 +0000 | [diff] [blame] | 4632 | ObjCTypes.Int8PtrTy); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 4633 | } |
Daniel Dunbar | 86e253a | 2008-08-22 20:34:54 +0000 | [diff] [blame] | 4634 | for (unsigned i=0; i<NumCategories; i++) |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4635 | Symbols[NumClasses + i] = |
Owen Anderson | 3c4972d | 2009-07-29 18:54:39 +0000 | [diff] [blame] | 4636 | llvm::ConstantExpr::getBitCast(DefinedCategories[i], |
Daniel Dunbar | 86e253a | 2008-08-22 20:34:54 +0000 | [diff] [blame] | 4637 | ObjCTypes.Int8PtrTy); |
| 4638 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4639 | Values[4] = |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 4640 | llvm::ConstantArray::get(llvm::ArrayType::get(ObjCTypes.Int8PtrTy, |
Chris Lattner | 0b23971 | 2012-02-06 22:16:34 +0000 | [diff] [blame] | 4641 | Symbols.size()), |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 4642 | Symbols); |
| 4643 | |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 4644 | llvm::Constant *Init = llvm::ConstantStruct::getAnon(Values); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 4645 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 4646 | llvm::GlobalVariable *GV = CreateMetadataVar( |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4647 | "OBJC_SYMBOLS", Init, "__OBJC,__symbols,regular,no_dead_strip", |
| 4648 | CGM.getPointerAlign(), true); |
Owen Anderson | 3c4972d | 2009-07-29 18:54:39 +0000 | [diff] [blame] | 4649 | return llvm::ConstantExpr::getBitCast(GV, ObjCTypes.SymtabPtrTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 4650 | } |
| 4651 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4652 | llvm::Value *CGObjCMac::EmitClassRefFromId(CodeGenFunction &CGF, |
| 4653 | IdentifierInfo *II) { |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 4654 | LazySymbols.insert(II); |
| 4655 | |
| 4656 | llvm::GlobalVariable *&Entry = ClassReferences[II]; |
| 4657 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 4658 | if (!Entry) { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4659 | llvm::Constant *Casted = |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 4660 | llvm::ConstantExpr::getBitCast(GetClassName(II->getName()), |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 4661 | ObjCTypes.ClassPtrTy); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 4662 | Entry = CreateMetadataVar( |
| 4663 | "OBJC_CLASS_REFERENCES_", Casted, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4664 | "__OBJC,__cls_refs,literal_pointers,no_dead_strip", |
| 4665 | CGM.getPointerAlign(), true); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 4666 | } |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 4667 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4668 | return CGF.Builder.CreateAlignedLoad(Entry, CGF.getPointerAlign()); |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 4669 | } |
| 4670 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4671 | llvm::Value *CGObjCMac::EmitClassRef(CodeGenFunction &CGF, |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 4672 | const ObjCInterfaceDecl *ID) { |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 4673 | // If the class has the objc_runtime_visible attribute, we need to |
| 4674 | // use the Objective-C runtime to get the class. |
| 4675 | if (ID->hasAttr<ObjCRuntimeVisibleAttr>()) |
| 4676 | return EmitClassRefViaRuntime(CGF, ID, ObjCTypes); |
| 4677 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4678 | return EmitClassRefFromId(CGF, ID->getIdentifier()); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 4679 | } |
| 4680 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4681 | llvm::Value *CGObjCMac::EmitNSAutoreleasePoolClassRef(CodeGenFunction &CGF) { |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 4682 | IdentifierInfo *II = &CGM.getContext().Idents.get("NSAutoreleasePool"); |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 4683 | return EmitClassRefFromId(CGF, II); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 4684 | } |
| 4685 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4686 | llvm::Value *CGObjCMac::EmitSelector(CodeGenFunction &CGF, Selector Sel) { |
| 4687 | return CGF.Builder.CreateLoad(EmitSelectorAddr(CGF, Sel)); |
| 4688 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4689 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4690 | Address CGObjCMac::EmitSelectorAddr(CodeGenFunction &CGF, Selector Sel) { |
| 4691 | CharUnits Align = CGF.getPointerAlign(); |
| 4692 | |
| 4693 | llvm::GlobalVariable *&Entry = SelectorReferences[Sel]; |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 4694 | if (!Entry) { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4695 | llvm::Constant *Casted = |
Owen Anderson | 3c4972d | 2009-07-29 18:54:39 +0000 | [diff] [blame] | 4696 | llvm::ConstantExpr::getBitCast(GetMethodVarName(Sel), |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 4697 | ObjCTypes.SelectorPtrTy); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 4698 | Entry = CreateMetadataVar( |
| 4699 | "OBJC_SELECTOR_REFERENCES_", Casted, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4700 | "__OBJC,__message_refs,literal_pointers,no_dead_strip", Align, true); |
Michael Gottesman | 8f98bf9 | 2013-02-05 23:08:45 +0000 | [diff] [blame] | 4701 | Entry->setExternallyInitialized(true); |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 4702 | } |
| 4703 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4704 | return Address(Entry, Align); |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 4705 | } |
| 4706 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 4707 | llvm::Constant *CGObjCCommonMac::GetClassName(StringRef RuntimeName) { |
| 4708 | llvm::GlobalVariable *&Entry = ClassNames[RuntimeName]; |
| 4709 | if (!Entry) |
| 4710 | Entry = CreateMetadataVar( |
| 4711 | "OBJC_CLASS_NAME_", |
| 4712 | llvm::ConstantDataArray::getString(VMContext, RuntimeName), |
| 4713 | ((ObjCABI == 2) ? "__TEXT,__objc_classname,cstring_literals" |
| 4714 | : "__TEXT,__cstring,cstring_literals"), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4715 | CharUnits::One(), true); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 4716 | return getConstantGEP(VMContext, Entry, 0, 0); |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 4717 | } |
| 4718 | |
Argyrios Kyrtzidis | 9d50c06 | 2010-08-09 10:54:20 +0000 | [diff] [blame] | 4719 | llvm::Function *CGObjCCommonMac::GetMethodDefinition(const ObjCMethodDecl *MD) { |
| 4720 | llvm::DenseMap<const ObjCMethodDecl*, llvm::Function*>::iterator |
| 4721 | I = MethodDefinitions.find(MD); |
| 4722 | if (I != MethodDefinitions.end()) |
| 4723 | return I->second; |
| 4724 | |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 4725 | return nullptr; |
Argyrios Kyrtzidis | 9d50c06 | 2010-08-09 10:54:20 +0000 | [diff] [blame] | 4726 | } |
| 4727 | |
Fariborz Jahanian | d80d81b | 2009-03-05 19:17:31 +0000 | [diff] [blame] | 4728 | /// GetIvarLayoutName - Returns a unique constant for the given |
| 4729 | /// ivar layout bitmap. |
| 4730 | llvm::Constant *CGObjCCommonMac::GetIvarLayoutName(IdentifierInfo *Ident, |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4731 | const ObjCCommonTypesHelper &ObjCTypes) { |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 4732 | return llvm::Constant::getNullValue(ObjCTypes.Int8PtrTy); |
Fariborz Jahanian | d80d81b | 2009-03-05 19:17:31 +0000 | [diff] [blame] | 4733 | } |
| 4734 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4735 | void IvarLayoutBuilder::visitRecord(const RecordType *RT, |
| 4736 | CharUnits offset) { |
Daniel Dunbar | d58edcb | 2009-05-03 14:10:34 +0000 | [diff] [blame] | 4737 | const RecordDecl *RD = RT->getDecl(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4738 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4739 | // If this is a union, remember that we had one, because it might mess |
| 4740 | // up the ordering of layout entries. |
| 4741 | if (RD->isUnion()) |
| 4742 | IsDisordered = true; |
| 4743 | |
| 4744 | const ASTRecordLayout *recLayout = nullptr; |
| 4745 | visitAggregate(RD->field_begin(), RD->field_end(), offset, |
| 4746 | [&](const FieldDecl *field) -> CharUnits { |
| 4747 | if (!recLayout) |
| 4748 | recLayout = &CGM.getContext().getASTRecordLayout(RD); |
| 4749 | auto offsetInBits = recLayout->getFieldOffset(field->getFieldIndex()); |
| 4750 | return CGM.getContext().toCharUnitsFromBits(offsetInBits); |
| 4751 | }); |
Daniel Dunbar | d58edcb | 2009-05-03 14:10:34 +0000 | [diff] [blame] | 4752 | } |
| 4753 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4754 | template <class Iterator, class GetOffsetFn> |
| 4755 | void IvarLayoutBuilder::visitAggregate(Iterator begin, Iterator end, |
| 4756 | CharUnits aggregateOffset, |
| 4757 | const GetOffsetFn &getOffset) { |
| 4758 | for (; begin != end; ++begin) { |
| 4759 | auto field = *begin; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4760 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4761 | // Skip over bitfields. |
| 4762 | if (field->isBitField()) { |
| 4763 | continue; |
| 4764 | } |
| 4765 | |
| 4766 | // Compute the offset of the field within the aggregate. |
| 4767 | CharUnits fieldOffset = aggregateOffset + getOffset(field); |
| 4768 | |
| 4769 | visitField(field, fieldOffset); |
| 4770 | } |
| 4771 | } |
| 4772 | |
| 4773 | /// Collect layout information for the given fields into IvarsInfo. |
| 4774 | void IvarLayoutBuilder::visitField(const FieldDecl *field, |
| 4775 | CharUnits fieldOffset) { |
| 4776 | QualType fieldType = field->getType(); |
| 4777 | |
| 4778 | // Drill down into arrays. |
| 4779 | uint64_t numElts = 1; |
| 4780 | while (auto arrayType = CGM.getContext().getAsConstantArrayType(fieldType)) { |
| 4781 | numElts *= arrayType->getSize().getZExtValue(); |
| 4782 | fieldType = arrayType->getElementType(); |
| 4783 | } |
| 4784 | |
| 4785 | assert(!fieldType->isArrayType() && "ivar of non-constant array type?"); |
| 4786 | |
| 4787 | // If we ended up with a zero-sized array, we've done what we can do within |
| 4788 | // the limits of this layout encoding. |
| 4789 | if (numElts == 0) return; |
| 4790 | |
| 4791 | // Recurse if the base element type is a record type. |
| 4792 | if (auto recType = fieldType->getAs<RecordType>()) { |
| 4793 | size_t oldEnd = IvarsInfo.size(); |
| 4794 | |
| 4795 | visitRecord(recType, fieldOffset); |
| 4796 | |
| 4797 | // If we have an array, replicate the first entry's layout information. |
| 4798 | auto numEltEntries = IvarsInfo.size() - oldEnd; |
| 4799 | if (numElts != 1 && numEltEntries != 0) { |
| 4800 | CharUnits eltSize = CGM.getContext().getTypeSizeInChars(recType); |
| 4801 | for (uint64_t eltIndex = 1; eltIndex != numElts; ++eltIndex) { |
| 4802 | // Copy the last numEltEntries onto the end of the array, adjusting |
| 4803 | // each for the element size. |
| 4804 | for (size_t i = 0; i != numEltEntries; ++i) { |
| 4805 | auto firstEntry = IvarsInfo[oldEnd + i]; |
| 4806 | IvarsInfo.push_back(IvarInfo(firstEntry.Offset + eltIndex * eltSize, |
| 4807 | firstEntry.SizeInWords)); |
| 4808 | } |
| 4809 | } |
| 4810 | } |
| 4811 | |
Fariborz Jahanian | a5a10c3 | 2009-03-10 16:22:08 +0000 | [diff] [blame] | 4812 | return; |
Fariborz Jahanian | 820e020 | 2009-03-11 00:07:04 +0000 | [diff] [blame] | 4813 | } |
Daniel Dunbar | d58edcb | 2009-05-03 14:10:34 +0000 | [diff] [blame] | 4814 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4815 | // Classify the element type. |
| 4816 | Qualifiers::GC GCAttr = GetGCAttrTypeForType(CGM.getContext(), fieldType); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4817 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4818 | // If it matches what we're looking for, add an entry. |
| 4819 | if ((ForStrongLayout && GCAttr == Qualifiers::Strong) |
| 4820 | || (!ForStrongLayout && GCAttr == Qualifiers::Weak)) { |
| 4821 | assert(CGM.getContext().getTypeSizeInChars(fieldType) |
| 4822 | == CGM.getPointerSize()); |
| 4823 | IvarsInfo.push_back(IvarInfo(fieldOffset, numElts)); |
| 4824 | } |
Fariborz Jahanian | d61a50a | 2009-03-05 22:39:55 +0000 | [diff] [blame] | 4825 | } |
| 4826 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4827 | /// buildBitmap - This routine does the horsework of taking the offsets of |
| 4828 | /// strong/weak references and creating a bitmap. The bitmap is also |
| 4829 | /// returned in the given buffer, suitable for being passed to \c dump(). |
| 4830 | llvm::Constant *IvarLayoutBuilder::buildBitmap(CGObjCCommonMac &CGObjC, |
| 4831 | llvm::SmallVectorImpl<unsigned char> &buffer) { |
| 4832 | // The bitmap is a series of skip/scan instructions, aligned to word |
| 4833 | // boundaries. The skip is performed first. |
| 4834 | const unsigned char MaxNibble = 0xF; |
| 4835 | const unsigned char SkipMask = 0xF0, SkipShift = 4; |
| 4836 | const unsigned char ScanMask = 0x0F, ScanShift = 0; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 4837 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4838 | assert(!IvarsInfo.empty() && "generating bitmap for no data"); |
| 4839 | |
| 4840 | // Sort the ivar info on byte position in case we encounterred a |
| 4841 | // union nested in the ivar list. |
| 4842 | if (IsDisordered) { |
| 4843 | // This isn't a stable sort, but our algorithm should handle it fine. |
| 4844 | llvm::array_pod_sort(IvarsInfo.begin(), IvarsInfo.end()); |
| 4845 | } else { |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 4846 | assert(std::is_sorted(IvarsInfo.begin(), IvarsInfo.end())); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4847 | } |
| 4848 | assert(IvarsInfo.back().Offset < InstanceEnd); |
| 4849 | |
| 4850 | assert(buffer.empty()); |
| 4851 | |
| 4852 | // Skip the next N words. |
| 4853 | auto skip = [&](unsigned numWords) { |
| 4854 | assert(numWords > 0); |
| 4855 | |
| 4856 | // Try to merge into the previous byte. Since scans happen second, we |
| 4857 | // can't do this if it includes a scan. |
| 4858 | if (!buffer.empty() && !(buffer.back() & ScanMask)) { |
| 4859 | unsigned lastSkip = buffer.back() >> SkipShift; |
| 4860 | if (lastSkip < MaxNibble) { |
| 4861 | unsigned claimed = std::min(MaxNibble - lastSkip, numWords); |
| 4862 | numWords -= claimed; |
| 4863 | lastSkip += claimed; |
| 4864 | buffer.back() = (lastSkip << SkipShift); |
| 4865 | } |
| 4866 | } |
| 4867 | |
| 4868 | while (numWords >= MaxNibble) { |
| 4869 | buffer.push_back(MaxNibble << SkipShift); |
| 4870 | numWords -= MaxNibble; |
| 4871 | } |
| 4872 | if (numWords) { |
| 4873 | buffer.push_back(numWords << SkipShift); |
| 4874 | } |
| 4875 | }; |
| 4876 | |
| 4877 | // Scan the next N words. |
| 4878 | auto scan = [&](unsigned numWords) { |
| 4879 | assert(numWords > 0); |
| 4880 | |
| 4881 | // Try to merge into the previous byte. Since scans happen second, we can |
| 4882 | // do this even if it includes a skip. |
| 4883 | if (!buffer.empty()) { |
| 4884 | unsigned lastScan = (buffer.back() & ScanMask) >> ScanShift; |
| 4885 | if (lastScan < MaxNibble) { |
| 4886 | unsigned claimed = std::min(MaxNibble - lastScan, numWords); |
| 4887 | numWords -= claimed; |
| 4888 | lastScan += claimed; |
| 4889 | buffer.back() = (buffer.back() & SkipMask) | (lastScan << ScanShift); |
| 4890 | } |
| 4891 | } |
| 4892 | |
| 4893 | while (numWords >= MaxNibble) { |
| 4894 | buffer.push_back(MaxNibble << ScanShift); |
| 4895 | numWords -= MaxNibble; |
| 4896 | } |
| 4897 | if (numWords) { |
| 4898 | buffer.push_back(numWords << ScanShift); |
| 4899 | } |
| 4900 | }; |
| 4901 | |
| 4902 | // One past the end of the last scan. |
| 4903 | unsigned endOfLastScanInWords = 0; |
| 4904 | const CharUnits WordSize = CGM.getPointerSize(); |
| 4905 | |
| 4906 | // Consider all the scan requests. |
| 4907 | for (auto &request : IvarsInfo) { |
| 4908 | CharUnits beginOfScan = request.Offset - InstanceBegin; |
| 4909 | |
| 4910 | // Ignore scan requests that don't start at an even multiple of the |
| 4911 | // word size. We can't encode them. |
| 4912 | if ((beginOfScan % WordSize) != 0) continue; |
| 4913 | |
| 4914 | // Ignore scan requests that start before the instance start. |
| 4915 | // This assumes that scans never span that boundary. The boundary |
| 4916 | // isn't the true start of the ivars, because in the fragile-ARC case |
| 4917 | // it's rounded up to word alignment, but the test above should leave |
| 4918 | // us ignoring that possibility. |
| 4919 | if (beginOfScan.isNegative()) { |
| 4920 | assert(request.Offset + request.SizeInWords * WordSize <= InstanceBegin); |
| 4921 | continue; |
| 4922 | } |
| 4923 | |
| 4924 | unsigned beginOfScanInWords = beginOfScan / WordSize; |
| 4925 | unsigned endOfScanInWords = beginOfScanInWords + request.SizeInWords; |
| 4926 | |
| 4927 | // If the scan starts some number of words after the last one ended, |
| 4928 | // skip forward. |
| 4929 | if (beginOfScanInWords > endOfLastScanInWords) { |
| 4930 | skip(beginOfScanInWords - endOfLastScanInWords); |
| 4931 | |
| 4932 | // Otherwise, start scanning where the last left off. |
| 4933 | } else { |
| 4934 | beginOfScanInWords = endOfLastScanInWords; |
| 4935 | |
| 4936 | // If that leaves us with nothing to scan, ignore this request. |
| 4937 | if (beginOfScanInWords >= endOfScanInWords) continue; |
| 4938 | } |
| 4939 | |
| 4940 | // Scan to the end of the request. |
| 4941 | assert(beginOfScanInWords < endOfScanInWords); |
| 4942 | scan(endOfScanInWords - beginOfScanInWords); |
| 4943 | endOfLastScanInWords = endOfScanInWords; |
| 4944 | } |
| 4945 | |
| 4946 | if (buffer.empty()) |
| 4947 | return llvm::ConstantPointerNull::get(CGM.Int8PtrTy); |
| 4948 | |
| 4949 | // For GC layouts, emit a skip to the end of the allocation so that we |
| 4950 | // have precise information about the entire thing. This isn't useful |
| 4951 | // or necessary for the ARC-style layout strings. |
| 4952 | if (CGM.getLangOpts().getGC() != LangOptions::NonGC) { |
| 4953 | unsigned lastOffsetInWords = |
| 4954 | (InstanceEnd - InstanceBegin + WordSize - CharUnits::One()) / WordSize; |
| 4955 | if (lastOffsetInWords > endOfLastScanInWords) { |
| 4956 | skip(lastOffsetInWords - endOfLastScanInWords); |
| 4957 | } |
| 4958 | } |
| 4959 | |
| 4960 | // Null terminate the string. |
| 4961 | buffer.push_back(0); |
| 4962 | |
| 4963 | bool isNonFragileABI = CGObjC.isNonFragileABI(); |
| 4964 | |
| 4965 | llvm::GlobalVariable *Entry = CGObjC.CreateMetadataVar( |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 4966 | "OBJC_CLASS_NAME_", |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4967 | llvm::ConstantDataArray::get(CGM.getLLVMContext(), buffer), |
| 4968 | (isNonFragileABI ? "__TEXT,__objc_classname,cstring_literals" |
| 4969 | : "__TEXT,__cstring,cstring_literals"), |
| 4970 | CharUnits::One(), true); |
| 4971 | return getConstantGEP(CGM.getLLVMContext(), Entry, 0, 0); |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 4972 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 4973 | |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 4974 | /// BuildIvarLayout - Builds ivar layout bitmap for the class |
| 4975 | /// implementation for the __strong or __weak case. |
| 4976 | /// The layout map displays which words in ivar list must be skipped |
| 4977 | /// and which must be scanned by GC (see below). String is built of bytes. |
| 4978 | /// Each byte is divided up in two nibbles (4-bit each). Left nibble is count |
| 4979 | /// of words to skip and right nibble is count of words to scan. So, each |
| 4980 | /// nibble represents up to 15 workds to skip or scan. Skipping the rest is |
| 4981 | /// represented by a 0x00 byte which also ends the string. |
| 4982 | /// 1. when ForStrongLayout is true, following ivars are scanned: |
| 4983 | /// - id, Class |
| 4984 | /// - object * |
| 4985 | /// - __strong anything |
| 4986 | /// |
| 4987 | /// 2. When ForStrongLayout is false, following ivars are scanned: |
| 4988 | /// - __weak anything |
| 4989 | /// |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4990 | llvm::Constant * |
| 4991 | CGObjCCommonMac::BuildIvarLayout(const ObjCImplementationDecl *OMD, |
| 4992 | CharUnits beginOffset, CharUnits endOffset, |
| 4993 | bool ForStrongLayout, bool HasMRCWeakIvars) { |
| 4994 | // If this is MRC, and we're either building a strong layout or there |
| 4995 | // are no weak ivars, bail out early. |
Chris Lattner | 8b41868 | 2012-02-07 00:39:47 +0000 | [diff] [blame] | 4996 | llvm::Type *PtrTy = CGM.Int8PtrTy; |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 4997 | if (CGM.getLangOpts().getGC() == LangOptions::NonGC && |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 4998 | !CGM.getLangOpts().ObjCAutoRefCount && |
| 4999 | (ForStrongLayout || !HasMRCWeakIvars)) |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 5000 | return llvm::Constant::getNullValue(PtrTy); |
| 5001 | |
Jordy Rose | db8264e | 2011-07-22 02:08:32 +0000 | [diff] [blame] | 5002 | const ObjCInterfaceDecl *OI = OMD->getClassInterface(); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5003 | SmallVector<const ObjCIvarDecl*, 32> ivars; |
| 5004 | |
| 5005 | // GC layout strings include the complete object layout, possibly |
| 5006 | // inaccurately in the non-fragile ABI; the runtime knows how to fix this |
| 5007 | // up. |
| 5008 | // |
| 5009 | // ARC layout strings only include the class's ivars. In non-fragile |
| 5010 | // runtimes, that means starting at InstanceStart, rounded up to word |
| 5011 | // alignment. In fragile runtimes, there's no InstanceStart, so it means |
| 5012 | // starting at the offset of the first ivar, rounded up to word alignment. |
| 5013 | // |
| 5014 | // MRC weak layout strings follow the ARC style. |
| 5015 | CharUnits baseOffset; |
| 5016 | if (CGM.getLangOpts().getGC() == LangOptions::NonGC) { |
Jordy Rose | db8264e | 2011-07-22 02:08:32 +0000 | [diff] [blame] | 5017 | for (const ObjCIvarDecl *IVD = OI->all_declared_ivar_begin(); |
Fariborz Jahanian | bf9eb88 | 2011-06-28 18:05:25 +0000 | [diff] [blame] | 5018 | IVD; IVD = IVD->getNextIvar()) |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5019 | ivars.push_back(IVD); |
| 5020 | |
| 5021 | if (isNonFragileABI()) { |
| 5022 | baseOffset = beginOffset; // InstanceStart |
| 5023 | } else if (!ivars.empty()) { |
| 5024 | baseOffset = |
| 5025 | CharUnits::fromQuantity(ComputeIvarBaseOffset(CGM, OMD, ivars[0])); |
| 5026 | } else { |
| 5027 | baseOffset = CharUnits::Zero(); |
| 5028 | } |
| 5029 | |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5030 | baseOffset = baseOffset.alignTo(CGM.getPointerAlign()); |
Fariborz Jahanian | bf9eb88 | 2011-06-28 18:05:25 +0000 | [diff] [blame] | 5031 | } |
| 5032 | else { |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5033 | CGM.getContext().DeepCollectObjCIvars(OI, true, ivars); |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 5034 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5035 | baseOffset = CharUnits::Zero(); |
Fariborz Jahanian | bf9eb88 | 2011-06-28 18:05:25 +0000 | [diff] [blame] | 5036 | } |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 5037 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5038 | if (ivars.empty()) |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 5039 | return llvm::Constant::getNullValue(PtrTy); |
| 5040 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5041 | IvarLayoutBuilder builder(CGM, baseOffset, endOffset, ForStrongLayout); |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 5042 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5043 | builder.visitAggregate(ivars.begin(), ivars.end(), CharUnits::Zero(), |
| 5044 | [&](const ObjCIvarDecl *ivar) -> CharUnits { |
| 5045 | return CharUnits::fromQuantity(ComputeIvarBaseOffset(CGM, OMD, ivar)); |
| 5046 | }); |
| 5047 | |
| 5048 | if (!builder.hasBitmapData()) |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 5049 | return llvm::Constant::getNullValue(PtrTy); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5050 | |
| 5051 | llvm::SmallVector<unsigned char, 4> buffer; |
| 5052 | llvm::Constant *C = builder.buildBitmap(*this, buffer); |
Fariborz Jahanian | b8fd2eb | 2010-08-05 00:19:48 +0000 | [diff] [blame] | 5053 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5054 | if (CGM.getLangOpts().ObjCGCBitmapPrint && !buffer.empty()) { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5055 | printf("\n%s ivar layout for class '%s': ", |
Fariborz Jahanian | 3d2ad66 | 2009-04-20 22:03:45 +0000 | [diff] [blame] | 5056 | ForStrongLayout ? "strong" : "weak", |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5057 | OMD->getClassInterface()->getName().str().c_str()); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5058 | builder.dump(buffer); |
Fariborz Jahanian | 3d2ad66 | 2009-04-20 22:03:45 +0000 | [diff] [blame] | 5059 | } |
Fariborz Jahanian | 93ce50d | 2010-08-04 23:55:24 +0000 | [diff] [blame] | 5060 | return C; |
Fariborz Jahanian | d61a50a | 2009-03-05 22:39:55 +0000 | [diff] [blame] | 5061 | } |
| 5062 | |
Fariborz Jahanian | 56210f7 | 2009-01-21 23:34:32 +0000 | [diff] [blame] | 5063 | llvm::Constant *CGObjCCommonMac::GetMethodVarName(Selector Sel) { |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 5064 | llvm::GlobalVariable *&Entry = MethodVarNames[Sel]; |
| 5065 | |
Chris Lattner | 0b23971 | 2012-02-06 22:16:34 +0000 | [diff] [blame] | 5066 | // FIXME: Avoid std::string in "Sel.getAsString()" |
Daniel Dunbar | 63c5b50 | 2009-03-09 21:49:58 +0000 | [diff] [blame] | 5067 | if (!Entry) |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5068 | Entry = CreateMetadataVar( |
| 5069 | "OBJC_METH_VAR_NAME_", |
| 5070 | llvm::ConstantDataArray::getString(VMContext, Sel.getAsString()), |
| 5071 | ((ObjCABI == 2) ? "__TEXT,__objc_methname,cstring_literals" |
| 5072 | : "__TEXT,__cstring,cstring_literals"), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5073 | CharUnits::One(), true); |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 5074 | |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 5075 | return getConstantGEP(VMContext, Entry, 0, 0); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 5076 | } |
| 5077 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 5078 | // FIXME: Merge into a single cstring creation function. |
Fariborz Jahanian | 56210f7 | 2009-01-21 23:34:32 +0000 | [diff] [blame] | 5079 | llvm::Constant *CGObjCCommonMac::GetMethodVarName(IdentifierInfo *ID) { |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 5080 | return GetMethodVarName(CGM.getContext().Selectors.getNullarySelector(ID)); |
| 5081 | } |
| 5082 | |
Daniel Dunbar | 3e5f0d8 | 2009-04-20 06:54:31 +0000 | [diff] [blame] | 5083 | llvm::Constant *CGObjCCommonMac::GetMethodVarType(const FieldDecl *Field) { |
Devang Patel | 7794bb8 | 2009-03-04 18:21:39 +0000 | [diff] [blame] | 5084 | std::string TypeStr; |
| 5085 | CGM.getContext().getObjCEncodingForType(Field->getType(), TypeStr, Field); |
| 5086 | |
| 5087 | llvm::GlobalVariable *&Entry = MethodVarTypes[TypeStr]; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 5088 | |
Daniel Dunbar | 63c5b50 | 2009-03-09 21:49:58 +0000 | [diff] [blame] | 5089 | if (!Entry) |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5090 | Entry = CreateMetadataVar( |
| 5091 | "OBJC_METH_VAR_TYPE_", |
| 5092 | llvm::ConstantDataArray::getString(VMContext, TypeStr), |
| 5093 | ((ObjCABI == 2) ? "__TEXT,__objc_methtype,cstring_literals" |
| 5094 | : "__TEXT,__cstring,cstring_literals"), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5095 | CharUnits::One(), true); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5096 | |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 5097 | return getConstantGEP(VMContext, Entry, 0, 0); |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 5098 | } |
| 5099 | |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 5100 | llvm::Constant *CGObjCCommonMac::GetMethodVarType(const ObjCMethodDecl *D, |
| 5101 | bool Extended) { |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 5102 | std::string TypeStr; |
Bill Wendling | a4dc693 | 2012-02-09 22:45:21 +0000 | [diff] [blame] | 5103 | if (CGM.getContext().getObjCEncodingForMethodDecl(D, TypeStr, Extended)) |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 5104 | return nullptr; |
Devang Patel | 7794bb8 | 2009-03-04 18:21:39 +0000 | [diff] [blame] | 5105 | |
| 5106 | llvm::GlobalVariable *&Entry = MethodVarTypes[TypeStr]; |
| 5107 | |
Daniel Dunbar | b90bb00 | 2009-04-14 23:14:47 +0000 | [diff] [blame] | 5108 | if (!Entry) |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5109 | Entry = CreateMetadataVar( |
| 5110 | "OBJC_METH_VAR_TYPE_", |
| 5111 | llvm::ConstantDataArray::getString(VMContext, TypeStr), |
| 5112 | ((ObjCABI == 2) ? "__TEXT,__objc_methtype,cstring_literals" |
| 5113 | : "__TEXT,__cstring,cstring_literals"), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5114 | CharUnits::One(), true); |
Devang Patel | 7794bb8 | 2009-03-04 18:21:39 +0000 | [diff] [blame] | 5115 | |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 5116 | return getConstantGEP(VMContext, Entry, 0, 0); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 5117 | } |
| 5118 | |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 5119 | // FIXME: Merge into a single cstring creation function. |
Fariborz Jahanian | 56210f7 | 2009-01-21 23:34:32 +0000 | [diff] [blame] | 5120 | llvm::Constant *CGObjCCommonMac::GetPropertyName(IdentifierInfo *Ident) { |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 5121 | llvm::GlobalVariable *&Entry = PropertyNames[Ident]; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5122 | |
Daniel Dunbar | 63c5b50 | 2009-03-09 21:49:58 +0000 | [diff] [blame] | 5123 | if (!Entry) |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 5124 | Entry = CreateMetadataVar( |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5125 | "OBJC_PROP_NAME_ATTR_", |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 5126 | llvm::ConstantDataArray::getString(VMContext, Ident->getName()), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5127 | "__TEXT,__cstring,cstring_literals", CharUnits::One(), true); |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 5128 | |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 5129 | return getConstantGEP(VMContext, Entry, 0, 0); |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 5130 | } |
| 5131 | |
| 5132 | // FIXME: Merge into a single cstring creation function. |
Daniel Dunbar | c56f34a | 2008-08-28 04:38:10 +0000 | [diff] [blame] | 5133 | // FIXME: This Decl should be more precise. |
Daniel Dunbar | 63c5b50 | 2009-03-09 21:49:58 +0000 | [diff] [blame] | 5134 | llvm::Constant * |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5135 | CGObjCCommonMac::GetPropertyTypeString(const ObjCPropertyDecl *PD, |
| 5136 | const Decl *Container) { |
Daniel Dunbar | c56f34a | 2008-08-28 04:38:10 +0000 | [diff] [blame] | 5137 | std::string TypeStr; |
| 5138 | CGM.getContext().getObjCEncodingForPropertyDecl(PD, Container, TypeStr); |
Daniel Dunbar | c8ef551 | 2008-08-23 00:19:03 +0000 | [diff] [blame] | 5139 | return GetPropertyName(&CGM.getContext().Idents.get(TypeStr)); |
| 5140 | } |
| 5141 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5142 | void CGObjCCommonMac::GetNameForMethod(const ObjCMethodDecl *D, |
Fariborz Jahanian | 56210f7 | 2009-01-21 23:34:32 +0000 | [diff] [blame] | 5143 | const ObjCContainerDecl *CD, |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 5144 | SmallVectorImpl<char> &Name) { |
Daniel Dunbar | c575ce7 | 2009-10-19 01:21:19 +0000 | [diff] [blame] | 5145 | llvm::raw_svector_ostream OS(Name); |
Fariborz Jahanian | 679a502 | 2009-01-10 21:06:09 +0000 | [diff] [blame] | 5146 | assert (CD && "Missing container decl in GetNameForMethod"); |
Daniel Dunbar | c575ce7 | 2009-10-19 01:21:19 +0000 | [diff] [blame] | 5147 | OS << '\01' << (D->isInstanceMethod() ? '-' : '+') |
| 5148 | << '[' << CD->getName(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5149 | if (const ObjCCategoryImplDecl *CID = |
Daniel Dunbar | c575ce7 | 2009-10-19 01:21:19 +0000 | [diff] [blame] | 5150 | dyn_cast<ObjCCategoryImplDecl>(D->getDeclContext())) |
Benjamin Kramer | f978059 | 2012-02-07 11:57:45 +0000 | [diff] [blame] | 5151 | OS << '(' << *CID << ')'; |
Daniel Dunbar | c575ce7 | 2009-10-19 01:21:19 +0000 | [diff] [blame] | 5152 | OS << ' ' << D->getSelector().getAsString() << ']'; |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 5153 | } |
| 5154 | |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 5155 | void CGObjCMac::FinishModule() { |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 5156 | EmitModuleInfo(); |
| 5157 | |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 5158 | // Emit the dummy bodies for any protocols which were referenced but |
| 5159 | // never defined. |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5160 | for (llvm::DenseMap<IdentifierInfo*, llvm::GlobalVariable*>::iterator |
Chris Lattner | ad64e02 | 2009-07-17 23:57:13 +0000 | [diff] [blame] | 5161 | I = Protocols.begin(), e = Protocols.end(); I != e; ++I) { |
| 5162 | if (I->second->hasInitializer()) |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 5163 | continue; |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 5164 | |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 5165 | llvm::Constant *Values[5]; |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 5166 | Values[0] = llvm::Constant::getNullValue(ObjCTypes.ProtocolExtensionPtrTy); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5167 | Values[1] = GetClassName(I->first->getName()); |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 5168 | Values[2] = llvm::Constant::getNullValue(ObjCTypes.ProtocolListPtrTy); |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 5169 | Values[3] = Values[4] = |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 5170 | llvm::Constant::getNullValue(ObjCTypes.MethodDescriptionListPtrTy); |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 5171 | I->second->setInitializer(llvm::ConstantStruct::get(ObjCTypes.ProtocolTy, |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 5172 | Values)); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5173 | CGM.addCompilerUsedGlobal(I->second); |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 5174 | } |
| 5175 | |
Daniel Dunbar | 242d4dc | 2008-08-25 06:02:07 +0000 | [diff] [blame] | 5176 | // Add assembler directives to add lazy undefined symbol references |
| 5177 | // for classes which are referenced but not defined. This is |
| 5178 | // important for correct linker interaction. |
Daniel Dunbar | 3306349 | 2009-09-07 00:20:42 +0000 | [diff] [blame] | 5179 | // |
| 5180 | // FIXME: It would be nice if we had an LLVM construct for this. |
| 5181 | if (!LazySymbols.empty() || !DefinedSymbols.empty()) { |
Dylan Noblesmith | f7ccbad | 2012-02-05 02:13:05 +0000 | [diff] [blame] | 5182 | SmallString<256> Asm; |
Daniel Dunbar | 3306349 | 2009-09-07 00:20:42 +0000 | [diff] [blame] | 5183 | Asm += CGM.getModule().getModuleInlineAsm(); |
| 5184 | if (!Asm.empty() && Asm.back() != '\n') |
| 5185 | Asm += '\n'; |
Daniel Dunbar | 242d4dc | 2008-08-25 06:02:07 +0000 | [diff] [blame] | 5186 | |
Daniel Dunbar | 3306349 | 2009-09-07 00:20:42 +0000 | [diff] [blame] | 5187 | llvm::raw_svector_ostream OS(Asm); |
Daniel Dunbar | 3306349 | 2009-09-07 00:20:42 +0000 | [diff] [blame] | 5188 | for (llvm::SetVector<IdentifierInfo*>::iterator I = DefinedSymbols.begin(), |
| 5189 | e = DefinedSymbols.end(); I != e; ++I) |
Daniel Dunbar | 01eb9b9 | 2009-10-18 21:17:35 +0000 | [diff] [blame] | 5190 | OS << "\t.objc_class_name_" << (*I)->getName() << "=0\n" |
| 5191 | << "\t.globl .objc_class_name_" << (*I)->getName() << "\n"; |
Chris Lattner | afd5eda | 2010-04-17 18:26:20 +0000 | [diff] [blame] | 5192 | for (llvm::SetVector<IdentifierInfo*>::iterator I = LazySymbols.begin(), |
Fariborz Jahanian | b9c5b3d | 2010-06-21 22:05:18 +0000 | [diff] [blame] | 5193 | e = LazySymbols.end(); I != e; ++I) { |
Chris Lattner | afd5eda | 2010-04-17 18:26:20 +0000 | [diff] [blame] | 5194 | OS << "\t.lazy_reference .objc_class_name_" << (*I)->getName() << "\n"; |
Fariborz Jahanian | b9c5b3d | 2010-06-21 22:05:18 +0000 | [diff] [blame] | 5195 | } |
| 5196 | |
Bill Wendling | 13562a1 | 2012-02-07 09:06:01 +0000 | [diff] [blame] | 5197 | for (size_t i = 0, e = DefinedCategoryNames.size(); i < e; ++i) { |
Fariborz Jahanian | b9c5b3d | 2010-06-21 22:05:18 +0000 | [diff] [blame] | 5198 | OS << "\t.objc_category_name_" << DefinedCategoryNames[i] << "=0\n" |
| 5199 | << "\t.globl .objc_category_name_" << DefinedCategoryNames[i] << "\n"; |
| 5200 | } |
Chris Lattner | afd5eda | 2010-04-17 18:26:20 +0000 | [diff] [blame] | 5201 | |
Daniel Dunbar | 3306349 | 2009-09-07 00:20:42 +0000 | [diff] [blame] | 5202 | CGM.getModule().setModuleInlineAsm(OS.str()); |
Daniel Dunbar | 242d4dc | 2008-08-25 06:02:07 +0000 | [diff] [blame] | 5203 | } |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 5204 | } |
| 5205 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5206 | CGObjCNonFragileABIMac::CGObjCNonFragileABIMac(CodeGen::CodeGenModule &cgm) |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5207 | : CGObjCCommonMac(cgm), ObjCTypes(cgm), ObjCEmptyCacheVar(nullptr), |
| 5208 | ObjCEmptyVtableVar(nullptr) { |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 5209 | ObjCABI = 2; |
| 5210 | } |
| 5211 | |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 5212 | /* *** */ |
| 5213 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 5214 | ObjCCommonTypesHelper::ObjCCommonTypesHelper(CodeGen::CodeGenModule &cgm) |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 5215 | : VMContext(cgm.getLLVMContext()), CGM(cgm), ExternalProtocolPtrTy(nullptr) |
Douglas Gregor | 65a1e67 | 2012-01-17 23:38:32 +0000 | [diff] [blame] | 5216 | { |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 5217 | CodeGen::CodeGenTypes &Types = CGM.getTypes(); |
| 5218 | ASTContext &Ctx = CGM.getContext(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5219 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 5220 | ShortTy = Types.ConvertType(Ctx.ShortTy); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 5221 | IntTy = Types.ConvertType(Ctx.IntTy); |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 5222 | LongTy = Types.ConvertType(Ctx.LongTy); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 5223 | LongLongTy = Types.ConvertType(Ctx.LongLongTy); |
Chris Lattner | 8b41868 | 2012-02-07 00:39:47 +0000 | [diff] [blame] | 5224 | Int8PtrTy = CGM.Int8PtrTy; |
| 5225 | Int8PtrPtrTy = CGM.Int8PtrPtrTy; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5226 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5227 | // arm64 targets use "int" ivar offset variables. All others, |
| 5228 | // including OS X x86_64 and Windows x86_64, use "long" ivar offsets. |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5229 | if (CGM.getTarget().getTriple().getArch() == llvm::Triple::aarch64) |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5230 | IvarOffsetVarTy = IntTy; |
| 5231 | else |
| 5232 | IvarOffsetVarTy = LongTy; |
| 5233 | |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 5234 | ObjectPtrTy = Types.ConvertType(Ctx.getObjCIdType()); |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5235 | PtrObjectPtrTy = llvm::PointerType::getUnqual(ObjectPtrTy); |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 5236 | SelectorPtrTy = Types.ConvertType(Ctx.getObjCSelType()); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5237 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 5238 | // I'm not sure I like this. The implicit coordination is a bit |
| 5239 | // gross. We should solve this in a reasonable fashion because this |
| 5240 | // is a pretty common task (match some runtime data structure with |
| 5241 | // an LLVM data structure). |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5242 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 5243 | // FIXME: This is leaked. |
| 5244 | // FIXME: Merge with rewriter code? |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5245 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 5246 | // struct _objc_super { |
| 5247 | // id self; |
| 5248 | // Class cls; |
| 5249 | // } |
Abramo Bagnara | 465d41b | 2010-05-11 21:36:43 +0000 | [diff] [blame] | 5250 | RecordDecl *RD = RecordDecl::Create(Ctx, TTK_Struct, |
Daniel Dunbar | daa3ac5 | 2010-04-29 16:29:11 +0000 | [diff] [blame] | 5251 | Ctx.getTranslationUnitDecl(), |
Abramo Bagnara | ba877ad | 2011-03-09 14:09:51 +0000 | [diff] [blame] | 5252 | SourceLocation(), SourceLocation(), |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5253 | &Ctx.Idents.get("_objc_super")); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 5254 | RD->addDecl(FieldDecl::Create(Ctx, RD, SourceLocation(), SourceLocation(), |
| 5255 | nullptr, Ctx.getObjCIdType(), nullptr, nullptr, |
| 5256 | false, ICIS_NoInit)); |
| 5257 | RD->addDecl(FieldDecl::Create(Ctx, RD, SourceLocation(), SourceLocation(), |
| 5258 | nullptr, Ctx.getObjCClassType(), nullptr, |
| 5259 | nullptr, false, ICIS_NoInit)); |
Douglas Gregor | 838db38 | 2010-02-11 01:19:42 +0000 | [diff] [blame] | 5260 | RD->completeDefinition(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5261 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 5262 | SuperCTy = Ctx.getTagDeclType(RD); |
| 5263 | SuperPtrCTy = Ctx.getPointerType(SuperCTy); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5264 | |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 5265 | SuperTy = cast<llvm::StructType>(Types.ConvertType(SuperCTy)); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5266 | SuperPtrTy = llvm::PointerType::getUnqual(SuperTy); |
| 5267 | |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5268 | // struct _prop_t { |
| 5269 | // char *name; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5270 | // char *attributes; |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5271 | // } |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5272 | PropertyTy = llvm::StructType::create("struct._prop_t", |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5273 | Int8PtrTy, Int8PtrTy, nullptr); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5274 | |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5275 | // struct _prop_list_t { |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 5276 | // uint32_t entsize; // sizeof(struct _prop_t) |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5277 | // uint32_t count_of_properties; |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 5278 | // struct _prop_t prop_list[count_of_properties]; |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5279 | // } |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5280 | PropertyListTy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5281 | llvm::StructType::create("struct._prop_list_t", IntTy, IntTy, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5282 | llvm::ArrayType::get(PropertyTy, 0), nullptr); |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5283 | // struct _prop_list_t * |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5284 | PropertyListPtrTy = llvm::PointerType::getUnqual(PropertyListTy); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5285 | |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5286 | // struct _objc_method { |
| 5287 | // SEL _cmd; |
| 5288 | // char *method_type; |
| 5289 | // char *_imp; |
| 5290 | // } |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5291 | MethodTy = llvm::StructType::create("struct._objc_method", |
| 5292 | SelectorPtrTy, Int8PtrTy, Int8PtrTy, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5293 | nullptr); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5294 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 5295 | // struct _objc_cache * |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5296 | CacheTy = llvm::StructType::create(VMContext, "struct._objc_cache"); |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5297 | CachePtrTy = llvm::PointerType::getUnqual(CacheTy); |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 5298 | } |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 5299 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5300 | ObjCTypesHelper::ObjCTypesHelper(CodeGen::CodeGenModule &cgm) |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 5301 | : ObjCCommonTypesHelper(cgm) { |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5302 | // struct _objc_method_description { |
| 5303 | // SEL name; |
| 5304 | // char *types; |
| 5305 | // } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5306 | MethodDescriptionTy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5307 | llvm::StructType::create("struct._objc_method_description", |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5308 | SelectorPtrTy, Int8PtrTy, nullptr); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 5309 | |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5310 | // struct _objc_method_description_list { |
| 5311 | // int count; |
| 5312 | // struct _objc_method_description[1]; |
| 5313 | // } |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5314 | MethodDescriptionListTy = llvm::StructType::create( |
| 5315 | "struct._objc_method_description_list", IntTy, |
| 5316 | llvm::ArrayType::get(MethodDescriptionTy, 0), nullptr); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5317 | |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5318 | // struct _objc_method_description_list * |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5319 | MethodDescriptionListPtrTy = |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5320 | llvm::PointerType::getUnqual(MethodDescriptionListTy); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 5321 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 5322 | // Protocol description structures |
| 5323 | |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5324 | // struct _objc_protocol_extension { |
| 5325 | // uint32_t size; // sizeof(struct _objc_protocol_extension) |
| 5326 | // struct _objc_method_description_list *optional_instance_methods; |
| 5327 | // struct _objc_method_description_list *optional_class_methods; |
| 5328 | // struct _objc_property_list *instance_properties; |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 5329 | // const char ** extendedMethodTypes; |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5330 | // struct _objc_property_list *class_properties; |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5331 | // } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5332 | ProtocolExtensionTy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5333 | llvm::StructType::create("struct._objc_protocol_extension", |
| 5334 | IntTy, MethodDescriptionListPtrTy, |
| 5335 | MethodDescriptionListPtrTy, PropertyListPtrTy, |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5336 | Int8PtrPtrTy, PropertyListPtrTy, nullptr); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5337 | |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5338 | // struct _objc_protocol_extension * |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5339 | ProtocolExtensionPtrTy = llvm::PointerType::getUnqual(ProtocolExtensionTy); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 5340 | |
Daniel Dunbar | 0c0e7a6 | 2008-10-29 22:36:39 +0000 | [diff] [blame] | 5341 | // Handle recursive construction of Protocol and ProtocolList types |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 5342 | |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5343 | ProtocolTy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5344 | llvm::StructType::create(VMContext, "struct._objc_protocol"); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 5345 | |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5346 | ProtocolListTy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5347 | llvm::StructType::create(VMContext, "struct._objc_protocol_list"); |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5348 | ProtocolListTy->setBody(llvm::PointerType::getUnqual(ProtocolListTy), |
Fariborz Jahanian | ee0af74 | 2009-01-21 22:04:16 +0000 | [diff] [blame] | 5349 | LongTy, |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5350 | llvm::ArrayType::get(ProtocolTy, 0), |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5351 | nullptr); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 5352 | |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5353 | // struct _objc_protocol { |
| 5354 | // struct _objc_protocol_extension *isa; |
| 5355 | // char *protocol_name; |
| 5356 | // struct _objc_protocol **_objc_protocol_list; |
| 5357 | // struct _objc_method_description_list *instance_methods; |
| 5358 | // struct _objc_method_description_list *class_methods; |
| 5359 | // } |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5360 | ProtocolTy->setBody(ProtocolExtensionPtrTy, Int8PtrTy, |
| 5361 | llvm::PointerType::getUnqual(ProtocolListTy), |
| 5362 | MethodDescriptionListPtrTy, |
| 5363 | MethodDescriptionListPtrTy, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5364 | nullptr); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 5365 | |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5366 | // struct _objc_protocol_list * |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5367 | ProtocolListPtrTy = llvm::PointerType::getUnqual(ProtocolListTy); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 5368 | |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5369 | ProtocolPtrTy = llvm::PointerType::getUnqual(ProtocolTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 5370 | |
| 5371 | // Class description structures |
| 5372 | |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5373 | // struct _objc_ivar { |
| 5374 | // char *ivar_name; |
| 5375 | // char *ivar_type; |
| 5376 | // int ivar_offset; |
| 5377 | // } |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5378 | IvarTy = llvm::StructType::create("struct._objc_ivar", |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5379 | Int8PtrTy, Int8PtrTy, IntTy, nullptr); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 5380 | |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5381 | // struct _objc_ivar_list * |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5382 | IvarListTy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5383 | llvm::StructType::create(VMContext, "struct._objc_ivar_list"); |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5384 | IvarListPtrTy = llvm::PointerType::getUnqual(IvarListTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 5385 | |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5386 | // struct _objc_method_list * |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5387 | MethodListTy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5388 | llvm::StructType::create(VMContext, "struct._objc_method_list"); |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5389 | MethodListPtrTy = llvm::PointerType::getUnqual(MethodListTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 5390 | |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5391 | // struct _objc_class_extension * |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5392 | ClassExtensionTy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5393 | llvm::StructType::create("struct._objc_class_extension", |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5394 | IntTy, Int8PtrTy, PropertyListPtrTy, nullptr); |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5395 | ClassExtensionPtrTy = llvm::PointerType::getUnqual(ClassExtensionTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 5396 | |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5397 | ClassTy = llvm::StructType::create(VMContext, "struct._objc_class"); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 5398 | |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5399 | // struct _objc_class { |
| 5400 | // Class isa; |
| 5401 | // Class super_class; |
| 5402 | // char *name; |
| 5403 | // long version; |
| 5404 | // long info; |
| 5405 | // long instance_size; |
| 5406 | // struct _objc_ivar_list *ivars; |
| 5407 | // struct _objc_method_list *methods; |
| 5408 | // struct _objc_cache *cache; |
| 5409 | // struct _objc_protocol_list *protocols; |
| 5410 | // char *ivar_layout; |
| 5411 | // struct _objc_class_ext *ext; |
| 5412 | // }; |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5413 | ClassTy->setBody(llvm::PointerType::getUnqual(ClassTy), |
| 5414 | llvm::PointerType::getUnqual(ClassTy), |
| 5415 | Int8PtrTy, |
| 5416 | LongTy, |
| 5417 | LongTy, |
| 5418 | LongTy, |
| 5419 | IvarListPtrTy, |
| 5420 | MethodListPtrTy, |
| 5421 | CachePtrTy, |
| 5422 | ProtocolListPtrTy, |
| 5423 | Int8PtrTy, |
| 5424 | ClassExtensionPtrTy, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5425 | nullptr); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5426 | |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5427 | ClassPtrTy = llvm::PointerType::getUnqual(ClassTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 5428 | |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5429 | // struct _objc_category { |
| 5430 | // char *category_name; |
| 5431 | // char *class_name; |
| 5432 | // struct _objc_method_list *instance_method; |
| 5433 | // struct _objc_method_list *class_method; |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5434 | // struct _objc_protocol_list *protocols; |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5435 | // uint32_t size; // sizeof(struct _objc_category) |
| 5436 | // struct _objc_property_list *instance_properties;// category's @property |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5437 | // struct _objc_property_list *class_properties; |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5438 | // } |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5439 | CategoryTy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5440 | llvm::StructType::create("struct._objc_category", |
| 5441 | Int8PtrTy, Int8PtrTy, MethodListPtrTy, |
| 5442 | MethodListPtrTy, ProtocolListPtrTy, |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5443 | IntTy, PropertyListPtrTy, PropertyListPtrTy, |
| 5444 | nullptr); |
Daniel Dunbar | 86e253a | 2008-08-22 20:34:54 +0000 | [diff] [blame] | 5445 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 5446 | // Global metadata structures |
| 5447 | |
Fariborz Jahanian | 10a4231 | 2009-01-21 00:39:53 +0000 | [diff] [blame] | 5448 | // struct _objc_symtab { |
| 5449 | // long sel_ref_cnt; |
| 5450 | // SEL *refs; |
| 5451 | // short cls_def_cnt; |
| 5452 | // short cat_def_cnt; |
| 5453 | // char *defs[cls_def_cnt + cat_def_cnt]; |
| 5454 | // } |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5455 | SymtabTy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5456 | llvm::StructType::create("struct._objc_symtab", |
| 5457 | LongTy, SelectorPtrTy, ShortTy, ShortTy, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5458 | llvm::ArrayType::get(Int8PtrTy, 0), nullptr); |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5459 | SymtabPtrTy = llvm::PointerType::getUnqual(SymtabTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame] | 5460 | |
Fariborz Jahanian | db28686 | 2009-01-22 00:37:21 +0000 | [diff] [blame] | 5461 | // struct _objc_module { |
| 5462 | // long version; |
| 5463 | // long size; // sizeof(struct _objc_module) |
| 5464 | // char *name; |
| 5465 | // struct _objc_symtab* symtab; |
| 5466 | // } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5467 | ModuleTy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5468 | llvm::StructType::create("struct._objc_module", |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5469 | LongTy, LongTy, Int8PtrTy, SymtabPtrTy, nullptr); |
Daniel Dunbar | 14c80b7 | 2008-08-23 09:25:55 +0000 | [diff] [blame] | 5470 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5471 | |
Mike Stump | f5408fe | 2009-05-16 07:57:57 +0000 | [diff] [blame] | 5472 | // FIXME: This is the size of the setjmp buffer and should be target |
| 5473 | // specific. 18 is what's used on 32-bit X86. |
Anders Carlsson | 124526b | 2008-09-09 10:10:21 +0000 | [diff] [blame] | 5474 | uint64_t SetJmpBufferSize = 18; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5475 | |
Anders Carlsson | 124526b | 2008-09-09 10:10:21 +0000 | [diff] [blame] | 5476 | // Exceptions |
Chris Lattner | 8b41868 | 2012-02-07 00:39:47 +0000 | [diff] [blame] | 5477 | llvm::Type *StackPtrTy = llvm::ArrayType::get(CGM.Int8PtrTy, 4); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5478 | |
| 5479 | ExceptionDataTy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5480 | llvm::StructType::create("struct._objc_exception_data", |
Chris Lattner | 8b41868 | 2012-02-07 00:39:47 +0000 | [diff] [blame] | 5481 | llvm::ArrayType::get(CGM.Int32Ty,SetJmpBufferSize), |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5482 | StackPtrTy, nullptr); |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 5483 | } |
| 5484 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5485 | ObjCNonFragileABITypesHelper::ObjCNonFragileABITypesHelper(CodeGen::CodeGenModule &cgm) |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 5486 | : ObjCCommonTypesHelper(cgm) { |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5487 | // struct _method_list_t { |
| 5488 | // uint32_t entsize; // sizeof(struct _objc_method) |
| 5489 | // uint32_t method_count; |
| 5490 | // struct _objc_method method_list[method_count]; |
| 5491 | // } |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5492 | MethodListnfABITy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5493 | llvm::StructType::create("struct.__method_list_t", IntTy, IntTy, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5494 | llvm::ArrayType::get(MethodTy, 0), nullptr); |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 5495 | // struct method_list_t * |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5496 | MethodListnfABIPtrTy = llvm::PointerType::getUnqual(MethodListnfABITy); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5497 | |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5498 | // struct _protocol_t { |
| 5499 | // id isa; // NULL |
| 5500 | // const char * const protocol_name; |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 5501 | // const struct _protocol_list_t * protocol_list; // super protocols |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5502 | // const struct method_list_t * const instance_methods; |
| 5503 | // const struct method_list_t * const class_methods; |
| 5504 | // const struct method_list_t *optionalInstanceMethods; |
| 5505 | // const struct method_list_t *optionalClassMethods; |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 5506 | // const struct _prop_list_t * properties; |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5507 | // const uint32_t size; // sizeof(struct _protocol_t) |
| 5508 | // const uint32_t flags; // = 0 |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 5509 | // const char ** extendedMethodTypes; |
Pirama Arumuga Nainar | 58878f8 | 2015-05-06 11:48:57 -0700 | [diff] [blame] | 5510 | // const char *demangledName; |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5511 | // const struct _prop_list_t * class_properties; |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5512 | // } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5513 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 5514 | // Holder for struct _protocol_list_t * |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5515 | ProtocolListnfABITy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5516 | llvm::StructType::create(VMContext, "struct._objc_protocol_list"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5517 | |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5518 | ProtocolnfABITy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5519 | llvm::StructType::create("struct._protocol_t", ObjectPtrTy, Int8PtrTy, |
| 5520 | llvm::PointerType::getUnqual(ProtocolListnfABITy), |
| 5521 | MethodListnfABIPtrTy, MethodListnfABIPtrTy, |
| 5522 | MethodListnfABIPtrTy, MethodListnfABIPtrTy, |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 5523 | PropertyListPtrTy, IntTy, IntTy, Int8PtrPtrTy, |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5524 | Int8PtrTy, PropertyListPtrTy, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5525 | nullptr); |
Daniel Dunbar | 948e258 | 2009-02-15 07:36:20 +0000 | [diff] [blame] | 5526 | |
| 5527 | // struct _protocol_t* |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5528 | ProtocolnfABIPtrTy = llvm::PointerType::getUnqual(ProtocolnfABITy); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5529 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 5530 | // struct _protocol_list_t { |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 5531 | // long protocol_count; // Note, this is 32/64 bit |
Daniel Dunbar | 948e258 | 2009-02-15 07:36:20 +0000 | [diff] [blame] | 5532 | // struct _protocol_t *[protocol_count]; |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5533 | // } |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5534 | ProtocolListnfABITy->setBody(LongTy, |
| 5535 | llvm::ArrayType::get(ProtocolnfABIPtrTy, 0), |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5536 | nullptr); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5537 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 5538 | // struct _objc_protocol_list* |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5539 | ProtocolListnfABIPtrTy = llvm::PointerType::getUnqual(ProtocolListnfABITy); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5540 | |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5541 | // struct _ivar_t { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5542 | // unsigned [long] int *offset; // pointer to ivar offset location |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5543 | // char *name; |
| 5544 | // char *type; |
| 5545 | // uint32_t alignment; |
| 5546 | // uint32_t size; |
| 5547 | // } |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5548 | IvarnfABITy = llvm::StructType::create( |
| 5549 | "struct._ivar_t", llvm::PointerType::getUnqual(IvarOffsetVarTy), |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5550 | Int8PtrTy, Int8PtrTy, IntTy, IntTy, nullptr); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5551 | |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5552 | // struct _ivar_list_t { |
| 5553 | // uint32 entsize; // sizeof(struct _ivar_t) |
| 5554 | // uint32 count; |
| 5555 | // struct _iver_t list[count]; |
| 5556 | // } |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5557 | IvarListnfABITy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5558 | llvm::StructType::create("struct._ivar_list_t", IntTy, IntTy, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5559 | llvm::ArrayType::get(IvarnfABITy, 0), nullptr); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5560 | |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5561 | IvarListnfABIPtrTy = llvm::PointerType::getUnqual(IvarListnfABITy); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5562 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 5563 | // struct _class_ro_t { |
Fariborz Jahanian | 30bc571 | 2009-01-22 23:02:58 +0000 | [diff] [blame] | 5564 | // uint32_t const flags; |
| 5565 | // uint32_t const instanceStart; |
| 5566 | // uint32_t const instanceSize; |
| 5567 | // uint32_t const reserved; // only when building for 64bit targets |
| 5568 | // const uint8_t * const ivarLayout; |
| 5569 | // const char *const name; |
| 5570 | // const struct _method_list_t * const baseMethods; |
| 5571 | // const struct _objc_protocol_list *const baseProtocols; |
| 5572 | // const struct _ivar_list_t *const ivars; |
| 5573 | // const uint8_t * const weakIvarLayout; |
| 5574 | // const struct _prop_list_t * const properties; |
| 5575 | // } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5576 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 5577 | // FIXME. Add 'reserved' field in 64bit abi mode! |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5578 | ClassRonfABITy = llvm::StructType::create("struct._class_ro_t", |
| 5579 | IntTy, IntTy, IntTy, Int8PtrTy, |
| 5580 | Int8PtrTy, MethodListnfABIPtrTy, |
| 5581 | ProtocolListnfABIPtrTy, |
| 5582 | IvarListnfABIPtrTy, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5583 | Int8PtrTy, PropertyListPtrTy, |
| 5584 | nullptr); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5585 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 5586 | // ImpnfABITy - LLVM for id (*)(id, SEL, ...) |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5587 | llvm::Type *params[] = { ObjectPtrTy, SelectorPtrTy }; |
John McCall | 0774cb8 | 2011-05-15 01:53:33 +0000 | [diff] [blame] | 5588 | ImpnfABITy = llvm::FunctionType::get(ObjectPtrTy, params, false) |
| 5589 | ->getPointerTo(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5590 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 5591 | // struct _class_t { |
| 5592 | // struct _class_t *isa; |
| 5593 | // struct _class_t * const superclass; |
| 5594 | // void *cache; |
| 5595 | // IMP *vtable; |
| 5596 | // struct class_ro_t *ro; |
| 5597 | // } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5598 | |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5599 | ClassnfABITy = llvm::StructType::create(VMContext, "struct._class_t"); |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5600 | ClassnfABITy->setBody(llvm::PointerType::getUnqual(ClassnfABITy), |
| 5601 | llvm::PointerType::getUnqual(ClassnfABITy), |
| 5602 | CachePtrTy, |
| 5603 | llvm::PointerType::getUnqual(ImpnfABITy), |
| 5604 | llvm::PointerType::getUnqual(ClassRonfABITy), |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5605 | nullptr); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5606 | |
Fariborz Jahanian | aa23b57 | 2009-01-23 23:53:38 +0000 | [diff] [blame] | 5607 | // LLVM for struct _class_t * |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5608 | ClassnfABIPtrTy = llvm::PointerType::getUnqual(ClassnfABITy); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5609 | |
Fariborz Jahanian | d55b6fc | 2009-01-23 01:46:23 +0000 | [diff] [blame] | 5610 | // struct _category_t { |
| 5611 | // const char * const name; |
| 5612 | // struct _class_t *const cls; |
| 5613 | // const struct _method_list_t * const instance_methods; |
| 5614 | // const struct _method_list_t * const class_methods; |
| 5615 | // const struct _protocol_list_t * const protocols; |
| 5616 | // const struct _prop_list_t * const properties; |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5617 | // const struct _prop_list_t * const class_properties; |
| 5618 | // const uint32_t size; |
Fariborz Jahanian | 45c2ba0 | 2009-01-23 17:41:22 +0000 | [diff] [blame] | 5619 | // } |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5620 | CategorynfABITy = llvm::StructType::create("struct._category_t", |
| 5621 | Int8PtrTy, ClassnfABIPtrTy, |
| 5622 | MethodListnfABIPtrTy, |
| 5623 | MethodListnfABIPtrTy, |
| 5624 | ProtocolListnfABIPtrTy, |
| 5625 | PropertyListPtrTy, |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5626 | PropertyListPtrTy, |
| 5627 | IntTy, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5628 | nullptr); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5629 | |
Fariborz Jahanian | 2e4672b | 2009-02-03 23:49:23 +0000 | [diff] [blame] | 5630 | // New types for nonfragile abi messaging. |
Fariborz Jahanian | 83a8a75 | 2009-02-04 20:42:28 +0000 | [diff] [blame] | 5631 | CodeGen::CodeGenTypes &Types = CGM.getTypes(); |
| 5632 | ASTContext &Ctx = CGM.getContext(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5633 | |
Fariborz Jahanian | 2e4672b | 2009-02-03 23:49:23 +0000 | [diff] [blame] | 5634 | // MessageRefTy - LLVM for: |
| 5635 | // struct _message_ref_t { |
| 5636 | // IMP messenger; |
| 5637 | // SEL name; |
| 5638 | // }; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5639 | |
Fariborz Jahanian | 83a8a75 | 2009-02-04 20:42:28 +0000 | [diff] [blame] | 5640 | // First the clang type for struct _message_ref_t |
Abramo Bagnara | 465d41b | 2010-05-11 21:36:43 +0000 | [diff] [blame] | 5641 | RecordDecl *RD = RecordDecl::Create(Ctx, TTK_Struct, |
Daniel Dunbar | daa3ac5 | 2010-04-29 16:29:11 +0000 | [diff] [blame] | 5642 | Ctx.getTranslationUnitDecl(), |
Abramo Bagnara | ba877ad | 2011-03-09 14:09:51 +0000 | [diff] [blame] | 5643 | SourceLocation(), SourceLocation(), |
Fariborz Jahanian | 83a8a75 | 2009-02-04 20:42:28 +0000 | [diff] [blame] | 5644 | &Ctx.Idents.get("_message_ref_t")); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 5645 | RD->addDecl(FieldDecl::Create(Ctx, RD, SourceLocation(), SourceLocation(), |
| 5646 | nullptr, Ctx.VoidPtrTy, nullptr, nullptr, false, |
Richard Smith | ca52330 | 2012-06-10 03:12:00 +0000 | [diff] [blame] | 5647 | ICIS_NoInit)); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 5648 | RD->addDecl(FieldDecl::Create(Ctx, RD, SourceLocation(), SourceLocation(), |
| 5649 | nullptr, Ctx.getObjCSelType(), nullptr, nullptr, |
| 5650 | false, ICIS_NoInit)); |
Douglas Gregor | 838db38 | 2010-02-11 01:19:42 +0000 | [diff] [blame] | 5651 | RD->completeDefinition(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5652 | |
Fariborz Jahanian | 83a8a75 | 2009-02-04 20:42:28 +0000 | [diff] [blame] | 5653 | MessageRefCTy = Ctx.getTagDeclType(RD); |
| 5654 | MessageRefCPtrTy = Ctx.getPointerType(MessageRefCTy); |
| 5655 | MessageRefTy = cast<llvm::StructType>(Types.ConvertType(MessageRefCTy)); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5656 | |
Fariborz Jahanian | 2e4672b | 2009-02-03 23:49:23 +0000 | [diff] [blame] | 5657 | // MessageRefPtrTy - LLVM for struct _message_ref_t* |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5658 | MessageRefPtrTy = llvm::PointerType::getUnqual(MessageRefTy); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5659 | |
Fariborz Jahanian | 2e4672b | 2009-02-03 23:49:23 +0000 | [diff] [blame] | 5660 | // SuperMessageRefTy - LLVM for: |
| 5661 | // struct _super_message_ref_t { |
| 5662 | // SUPER_IMP messenger; |
| 5663 | // SEL name; |
| 5664 | // }; |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5665 | SuperMessageRefTy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5666 | llvm::StructType::create("struct._super_message_ref_t", |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5667 | ImpnfABITy, SelectorPtrTy, nullptr); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5668 | |
Fariborz Jahanian | 2e4672b | 2009-02-03 23:49:23 +0000 | [diff] [blame] | 5669 | // SuperMessageRefPtrTy - LLVM for struct _super_message_ref_t* |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5670 | SuperMessageRefPtrTy = llvm::PointerType::getUnqual(SuperMessageRefTy); |
Fariborz Jahanian | 9d96bce | 2011-06-22 20:21:51 +0000 | [diff] [blame] | 5671 | |
Daniel Dunbar | e588b99 | 2009-03-01 04:46:24 +0000 | [diff] [blame] | 5672 | |
| 5673 | // struct objc_typeinfo { |
| 5674 | // const void** vtable; // objc_ehtype_vtable + 2 |
| 5675 | // const char* name; // c++ typeinfo string |
| 5676 | // Class cls; |
| 5677 | // }; |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 5678 | EHTypeTy = |
Chris Lattner | c1c2011 | 2011-08-12 17:43:31 +0000 | [diff] [blame] | 5679 | llvm::StructType::create("struct._objc_typeinfo", |
| 5680 | llvm::PointerType::getUnqual(Int8PtrTy), |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 5681 | Int8PtrTy, ClassnfABIPtrTy, nullptr); |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5682 | EHTypePtrTy = llvm::PointerType::getUnqual(EHTypeTy); |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 5683 | } |
| 5684 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5685 | llvm::Function *CGObjCNonFragileABIMac::ModuleInitFunction() { |
Fariborz Jahanian | aa23b57 | 2009-01-23 23:53:38 +0000 | [diff] [blame] | 5686 | FinishNonFragileABIModule(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5687 | |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 5688 | return nullptr; |
Fariborz Jahanian | aa23b57 | 2009-01-23 23:53:38 +0000 | [diff] [blame] | 5689 | } |
| 5690 | |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5691 | void CGObjCNonFragileABIMac::AddModuleClassList( |
| 5692 | ArrayRef<llvm::GlobalValue *> Container, StringRef SymbolName, |
| 5693 | StringRef SectionName) { |
Daniel Dunbar | 463b876 | 2009-05-15 21:48:48 +0000 | [diff] [blame] | 5694 | unsigned NumClasses = Container.size(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5695 | |
Daniel Dunbar | 463b876 | 2009-05-15 21:48:48 +0000 | [diff] [blame] | 5696 | if (!NumClasses) |
| 5697 | return; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5698 | |
Chris Lattner | 0b23971 | 2012-02-06 22:16:34 +0000 | [diff] [blame] | 5699 | SmallVector<llvm::Constant*, 8> Symbols(NumClasses); |
Daniel Dunbar | 463b876 | 2009-05-15 21:48:48 +0000 | [diff] [blame] | 5700 | for (unsigned i=0; i<NumClasses; i++) |
Owen Anderson | 3c4972d | 2009-07-29 18:54:39 +0000 | [diff] [blame] | 5701 | Symbols[i] = llvm::ConstantExpr::getBitCast(Container[i], |
Daniel Dunbar | 463b876 | 2009-05-15 21:48:48 +0000 | [diff] [blame] | 5702 | ObjCTypes.Int8PtrTy); |
Chris Lattner | 0b23971 | 2012-02-06 22:16:34 +0000 | [diff] [blame] | 5703 | llvm::Constant *Init = |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 5704 | llvm::ConstantArray::get(llvm::ArrayType::get(ObjCTypes.Int8PtrTy, |
Chris Lattner | 0b23971 | 2012-02-06 22:16:34 +0000 | [diff] [blame] | 5705 | Symbols.size()), |
Daniel Dunbar | 463b876 | 2009-05-15 21:48:48 +0000 | [diff] [blame] | 5706 | Symbols); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5707 | |
Daniel Dunbar | 463b876 | 2009-05-15 21:48:48 +0000 | [diff] [blame] | 5708 | llvm::GlobalVariable *GV = |
Owen Anderson | 1c431b3 | 2009-07-08 19:05:04 +0000 | [diff] [blame] | 5709 | new llvm::GlobalVariable(CGM.getModule(), Init->getType(), false, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5710 | llvm::GlobalValue::PrivateLinkage, |
Daniel Dunbar | 463b876 | 2009-05-15 21:48:48 +0000 | [diff] [blame] | 5711 | Init, |
Owen Anderson | 1c431b3 | 2009-07-08 19:05:04 +0000 | [diff] [blame] | 5712 | SymbolName); |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 5713 | GV->setAlignment(CGM.getDataLayout().getABITypeAlignment(Init->getType())); |
Daniel Dunbar | 463b876 | 2009-05-15 21:48:48 +0000 | [diff] [blame] | 5714 | GV->setSection(SectionName); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5715 | CGM.addCompilerUsedGlobal(GV); |
Daniel Dunbar | 463b876 | 2009-05-15 21:48:48 +0000 | [diff] [blame] | 5716 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5717 | |
Fariborz Jahanian | aa23b57 | 2009-01-23 23:53:38 +0000 | [diff] [blame] | 5718 | void CGObjCNonFragileABIMac::FinishNonFragileABIModule() { |
| 5719 | // nonfragile abi has no module definition. |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5720 | |
Daniel Dunbar | 463b876 | 2009-05-15 21:48:48 +0000 | [diff] [blame] | 5721 | // Build list of all implemented class addresses in array |
Fariborz Jahanian | f87a0cc | 2009-01-30 20:55:31 +0000 | [diff] [blame] | 5722 | // L_OBJC_LABEL_CLASS_$. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5723 | |
| 5724 | for (unsigned i=0, NumClasses=ImplementedClasses.size(); i<NumClasses; i++) { |
| 5725 | const ObjCInterfaceDecl *ID = ImplementedClasses[i]; |
| 5726 | assert(ID); |
| 5727 | if (ObjCImplementationDecl *IMP = ID->getImplementation()) |
| 5728 | // We are implementing a weak imported interface. Give it external linkage |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5729 | if (ID->isWeakImported() && !IMP->isWeakImported()) { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5730 | DefinedClasses[i]->setLinkage(llvm::GlobalVariable::ExternalLinkage); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5731 | DefinedMetaClasses[i]->setLinkage(llvm::GlobalVariable::ExternalLinkage); |
| 5732 | } |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5733 | } |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5734 | |
| 5735 | AddModuleClassList(DefinedClasses, "OBJC_LABEL_CLASS_$", |
Daniel Dunbar | 463b876 | 2009-05-15 21:48:48 +0000 | [diff] [blame] | 5736 | "__DATA, __objc_classlist, regular, no_dead_strip"); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5737 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5738 | AddModuleClassList(DefinedNonLazyClasses, "OBJC_LABEL_NONLAZY_CLASS_$", |
Daniel Dunbar | 74d4b12 | 2009-05-15 22:33:15 +0000 | [diff] [blame] | 5739 | "__DATA, __objc_nlclslist, regular, no_dead_strip"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5740 | |
Fariborz Jahanian | f87a0cc | 2009-01-30 20:55:31 +0000 | [diff] [blame] | 5741 | // Build list of all implemented category addresses in array |
| 5742 | // L_OBJC_LABEL_CATEGORY_$. |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5743 | AddModuleClassList(DefinedCategories, "OBJC_LABEL_CATEGORY_$", |
Daniel Dunbar | 463b876 | 2009-05-15 21:48:48 +0000 | [diff] [blame] | 5744 | "__DATA, __objc_catlist, regular, no_dead_strip"); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5745 | AddModuleClassList(DefinedNonLazyCategories, "OBJC_LABEL_NONLAZY_CATEGORY_$", |
Daniel Dunbar | 74d4b12 | 2009-05-15 22:33:15 +0000 | [diff] [blame] | 5746 | "__DATA, __objc_nlcatlist, regular, no_dead_strip"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5747 | |
Daniel Dunbar | fce176b | 2010-04-25 20:39:01 +0000 | [diff] [blame] | 5748 | EmitImageInfo(); |
Fariborz Jahanian | aa23b57 | 2009-01-23 23:53:38 +0000 | [diff] [blame] | 5749 | } |
| 5750 | |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 5751 | /// isVTableDispatchedSelector - Returns true if SEL is not in the list of |
| 5752 | /// VTableDispatchMethods; false otherwise. What this means is that |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5753 | /// except for the 19 selectors in the list, we generate 32bit-style |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 5754 | /// message dispatch call for all the rest. |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 5755 | bool CGObjCNonFragileABIMac::isVTableDispatchedSelector(Selector Sel) { |
| 5756 | // At various points we've experimented with using vtable-based |
| 5757 | // dispatch for all methods. |
Daniel Dunbar | f643b9b | 2010-04-24 17:56:46 +0000 | [diff] [blame] | 5758 | switch (CGM.getCodeGenOpts().getObjCDispatchMethod()) { |
Daniel Dunbar | f643b9b | 2010-04-24 17:56:46 +0000 | [diff] [blame] | 5759 | case CodeGenOptions::Legacy: |
Fariborz Jahanian | 776dbf9 | 2010-04-19 17:53:30 +0000 | [diff] [blame] | 5760 | return false; |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 5761 | case CodeGenOptions::NonLegacy: |
| 5762 | return true; |
Daniel Dunbar | f643b9b | 2010-04-24 17:56:46 +0000 | [diff] [blame] | 5763 | case CodeGenOptions::Mixed: |
| 5764 | break; |
| 5765 | } |
| 5766 | |
| 5767 | // If so, see whether this selector is in the white-list of things which must |
| 5768 | // use the new dispatch convention. We lazily build a dense set for this. |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 5769 | if (VTableDispatchMethods.empty()) { |
| 5770 | VTableDispatchMethods.insert(GetNullarySelector("alloc")); |
| 5771 | VTableDispatchMethods.insert(GetNullarySelector("class")); |
| 5772 | VTableDispatchMethods.insert(GetNullarySelector("self")); |
| 5773 | VTableDispatchMethods.insert(GetNullarySelector("isFlipped")); |
| 5774 | VTableDispatchMethods.insert(GetNullarySelector("length")); |
| 5775 | VTableDispatchMethods.insert(GetNullarySelector("count")); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5776 | |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 5777 | // These are vtable-based if GC is disabled. |
| 5778 | // Optimistically use vtable dispatch for hybrid compiles. |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 5779 | if (CGM.getLangOpts().getGC() != LangOptions::GCOnly) { |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 5780 | VTableDispatchMethods.insert(GetNullarySelector("retain")); |
| 5781 | VTableDispatchMethods.insert(GetNullarySelector("release")); |
| 5782 | VTableDispatchMethods.insert(GetNullarySelector("autorelease")); |
| 5783 | } |
| 5784 | |
| 5785 | VTableDispatchMethods.insert(GetUnarySelector("allocWithZone")); |
| 5786 | VTableDispatchMethods.insert(GetUnarySelector("isKindOfClass")); |
| 5787 | VTableDispatchMethods.insert(GetUnarySelector("respondsToSelector")); |
| 5788 | VTableDispatchMethods.insert(GetUnarySelector("objectForKey")); |
| 5789 | VTableDispatchMethods.insert(GetUnarySelector("objectAtIndex")); |
| 5790 | VTableDispatchMethods.insert(GetUnarySelector("isEqualToString")); |
| 5791 | VTableDispatchMethods.insert(GetUnarySelector("isEqual")); |
| 5792 | |
| 5793 | // These are vtable-based if GC is enabled. |
| 5794 | // Optimistically use vtable dispatch for hybrid compiles. |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 5795 | if (CGM.getLangOpts().getGC() != LangOptions::NonGC) { |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 5796 | VTableDispatchMethods.insert(GetNullarySelector("hash")); |
| 5797 | VTableDispatchMethods.insert(GetUnarySelector("addObject")); |
| 5798 | |
| 5799 | // "countByEnumeratingWithState:objects:count" |
| 5800 | IdentifierInfo *KeyIdents[] = { |
| 5801 | &CGM.getContext().Idents.get("countByEnumeratingWithState"), |
| 5802 | &CGM.getContext().Idents.get("objects"), |
| 5803 | &CGM.getContext().Idents.get("count") |
| 5804 | }; |
| 5805 | VTableDispatchMethods.insert( |
| 5806 | CGM.getContext().Selectors.getSelector(3, KeyIdents)); |
| 5807 | } |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 5808 | } |
Daniel Dunbar | f643b9b | 2010-04-24 17:56:46 +0000 | [diff] [blame] | 5809 | |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 5810 | return VTableDispatchMethods.count(Sel); |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 5811 | } |
| 5812 | |
Fariborz Jahanian | 058a1b7 | 2009-01-24 20:21:50 +0000 | [diff] [blame] | 5813 | /// BuildClassRoTInitializer - generate meta-data for: |
| 5814 | /// struct _class_ro_t { |
| 5815 | /// uint32_t const flags; |
| 5816 | /// uint32_t const instanceStart; |
| 5817 | /// uint32_t const instanceSize; |
| 5818 | /// uint32_t const reserved; // only when building for 64bit targets |
| 5819 | /// const uint8_t * const ivarLayout; |
| 5820 | /// const char *const name; |
| 5821 | /// const struct _method_list_t * const baseMethods; |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 5822 | /// const struct _protocol_list_t *const baseProtocols; |
Fariborz Jahanian | 058a1b7 | 2009-01-24 20:21:50 +0000 | [diff] [blame] | 5823 | /// const struct _ivar_list_t *const ivars; |
| 5824 | /// const uint8_t * const weakIvarLayout; |
| 5825 | /// const struct _prop_list_t * const properties; |
| 5826 | /// } |
| 5827 | /// |
| 5828 | llvm::GlobalVariable * CGObjCNonFragileABIMac::BuildClassRoTInitializer( |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5829 | unsigned flags, |
| 5830 | unsigned InstanceStart, |
| 5831 | unsigned InstanceSize, |
| 5832 | const ObjCImplementationDecl *ID) { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5833 | std::string ClassName = ID->getObjCRuntimeNameAsString(); |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 5834 | llvm::Constant *Values[10]; // 11 for 64bit targets! |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 5835 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5836 | CharUnits beginInstance = CharUnits::fromQuantity(InstanceStart); |
| 5837 | CharUnits endInstance = CharUnits::fromQuantity(InstanceSize); |
| 5838 | |
| 5839 | bool hasMRCWeak = false; |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 5840 | if (CGM.getLangOpts().ObjCAutoRefCount) |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 5841 | flags |= NonFragileABI_Class_CompiledByARC; |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5842 | else if ((hasMRCWeak = hasMRCWeakIvars(CGM, ID))) |
| 5843 | flags |= NonFragileABI_Class_HasMRCWeakIvars; |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 5844 | |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 5845 | Values[ 0] = llvm::ConstantInt::get(ObjCTypes.IntTy, flags); |
| 5846 | Values[ 1] = llvm::ConstantInt::get(ObjCTypes.IntTy, InstanceStart); |
| 5847 | Values[ 2] = llvm::ConstantInt::get(ObjCTypes.IntTy, InstanceSize); |
Fariborz Jahanian | 058a1b7 | 2009-01-24 20:21:50 +0000 | [diff] [blame] | 5848 | // FIXME. For 64bit targets add 0 here. |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 5849 | Values[ 3] = (flags & NonFragileABI_Class_Meta) |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 5850 | ? GetIvarLayoutName(nullptr, ObjCTypes) |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5851 | : BuildStrongIvarLayout(ID, beginInstance, endInstance); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5852 | Values[ 4] = GetClassName(ID->getObjCRuntimeNameAsString()); |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 5853 | // const struct _method_list_t * const baseMethods; |
| 5854 | std::vector<llvm::Constant*> Methods; |
| 5855 | std::string MethodListName("\01l_OBJC_$_"); |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 5856 | if (flags & NonFragileABI_Class_Meta) { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5857 | MethodListName += "CLASS_METHODS_"; |
| 5858 | MethodListName += ID->getObjCRuntimeNameAsString(); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5859 | for (const auto *I : ID->class_methods()) |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 5860 | // Class methods should always be defined. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5861 | Methods.push_back(GetMethodConstant(I)); |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 5862 | } else { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5863 | MethodListName += "INSTANCE_METHODS_"; |
| 5864 | MethodListName += ID->getObjCRuntimeNameAsString(); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5865 | for (const auto *I : ID->instance_methods()) |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 5866 | // Instance methods should always be defined. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5867 | Methods.push_back(GetMethodConstant(I)); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5868 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5869 | for (const auto *PID : ID->property_impls()) { |
Fariborz Jahanian | 939abce | 2009-01-28 22:46:49 +0000 | [diff] [blame] | 5870 | if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize){ |
| 5871 | ObjCPropertyDecl *PD = PID->getPropertyDecl(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5872 | |
Fariborz Jahanian | 939abce | 2009-01-28 22:46:49 +0000 | [diff] [blame] | 5873 | if (ObjCMethodDecl *MD = PD->getGetterMethodDecl()) |
| 5874 | if (llvm::Constant *C = GetMethodConstant(MD)) |
| 5875 | Methods.push_back(C); |
| 5876 | if (ObjCMethodDecl *MD = PD->getSetterMethodDecl()) |
| 5877 | if (llvm::Constant *C = GetMethodConstant(MD)) |
| 5878 | Methods.push_back(C); |
| 5879 | } |
| 5880 | } |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 5881 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5882 | Values[ 5] = EmitMethodList(MethodListName, |
| 5883 | "__DATA, __objc_const", Methods); |
| 5884 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 5885 | const ObjCInterfaceDecl *OID = ID->getClassInterface(); |
| 5886 | assert(OID && "CGObjCNonFragileABIMac::BuildClassRoTInitializer"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5887 | Values[ 6] = EmitProtocolList("\01l_OBJC_CLASS_PROTOCOLS_$_" |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5888 | + OID->getObjCRuntimeNameAsString(), |
Ted Kremenek | 53b9441 | 2010-09-01 01:21:15 +0000 | [diff] [blame] | 5889 | OID->all_referenced_protocol_begin(), |
| 5890 | OID->all_referenced_protocol_end()); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5891 | |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 5892 | if (flags & NonFragileABI_Class_Meta) { |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 5893 | Values[ 7] = llvm::Constant::getNullValue(ObjCTypes.IvarListnfABIPtrTy); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 5894 | Values[ 8] = GetIvarLayoutName(nullptr, ObjCTypes); |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5895 | Values[ 9] = EmitPropertyList( |
| 5896 | "\01l_OBJC_$_CLASS_PROP_LIST_" + ID->getObjCRuntimeNameAsString(), |
| 5897 | ID, ID->getClassInterface(), ObjCTypes, true); |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 5898 | } else { |
| 5899 | Values[ 7] = EmitIvarList(ID); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 5900 | Values[ 8] = BuildWeakIvarLayout(ID, beginInstance, endInstance, |
| 5901 | hasMRCWeak); |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5902 | Values[ 9] = EmitPropertyList( |
| 5903 | "\01l_OBJC_$_PROP_LIST_" + ID->getObjCRuntimeNameAsString(), |
| 5904 | ID, ID->getClassInterface(), ObjCTypes, false); |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 5905 | } |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 5906 | llvm::Constant *Init = llvm::ConstantStruct::get(ObjCTypes.ClassRonfABITy, |
Fariborz Jahanian | 058a1b7 | 2009-01-24 20:21:50 +0000 | [diff] [blame] | 5907 | Values); |
| 5908 | llvm::GlobalVariable *CLASS_RO_GV = |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5909 | new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.ClassRonfABITy, false, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5910 | llvm::GlobalValue::PrivateLinkage, |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5911 | Init, |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 5912 | (flags & NonFragileABI_Class_Meta) ? |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5913 | std::string("\01l_OBJC_METACLASS_RO_$_")+ClassName : |
| 5914 | std::string("\01l_OBJC_CLASS_RO_$_")+ClassName); |
Fariborz Jahanian | 09796d6 | 2009-01-31 02:43:27 +0000 | [diff] [blame] | 5915 | CLASS_RO_GV->setAlignment( |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 5916 | CGM.getDataLayout().getABITypeAlignment(ObjCTypes.ClassRonfABITy)); |
Fariborz Jahanian | 1bf0afb | 2009-01-28 01:05:23 +0000 | [diff] [blame] | 5917 | CLASS_RO_GV->setSection("__DATA, __objc_const"); |
Fariborz Jahanian | 058a1b7 | 2009-01-24 20:21:50 +0000 | [diff] [blame] | 5918 | return CLASS_RO_GV; |
Fariborz Jahanian | f6317dd | 2009-01-26 22:58:07 +0000 | [diff] [blame] | 5919 | |
Fariborz Jahanian | 058a1b7 | 2009-01-24 20:21:50 +0000 | [diff] [blame] | 5920 | } |
| 5921 | |
| 5922 | /// BuildClassMetaData - This routine defines that to-level meta-data |
| 5923 | /// for the given ClassName for: |
| 5924 | /// struct _class_t { |
| 5925 | /// struct _class_t *isa; |
| 5926 | /// struct _class_t * const superclass; |
| 5927 | /// void *cache; |
| 5928 | /// IMP *vtable; |
| 5929 | /// struct class_ro_t *ro; |
| 5930 | /// } |
| 5931 | /// |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5932 | llvm::GlobalVariable *CGObjCNonFragileABIMac::BuildClassMetaData( |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5933 | const std::string &ClassName, llvm::Constant *IsAGV, llvm::Constant *SuperClassGV, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5934 | llvm::Constant *ClassRoGV, bool HiddenVisibility, bool Weak) { |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 5935 | llvm::Constant *Values[] = { |
| 5936 | IsAGV, |
| 5937 | SuperClassGV, |
| 5938 | ObjCEmptyCacheVar, // &ObjCEmptyCacheVar |
| 5939 | ObjCEmptyVtableVar, // &ObjCEmptyVtableVar |
| 5940 | ClassRoGV // &CLASS_RO_GV |
| 5941 | }; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5942 | if (!Values[1]) |
| 5943 | Values[1] = llvm::Constant::getNullValue(ObjCTypes.ClassnfABIPtrTy); |
Fariborz Jahanian | 3da9a8f | 2013-10-24 17:40:28 +0000 | [diff] [blame] | 5944 | if (!Values[3]) |
| 5945 | Values[3] = llvm::Constant::getNullValue( |
| 5946 | llvm::PointerType::getUnqual(ObjCTypes.ImpnfABITy)); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5947 | llvm::Constant *Init = llvm::ConstantStruct::get(ObjCTypes.ClassnfABITy, |
Fariborz Jahanian | 058a1b7 | 2009-01-24 20:21:50 +0000 | [diff] [blame] | 5948 | Values); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5949 | llvm::GlobalVariable *GV = GetClassGlobal(ClassName, Weak); |
Daniel Dunbar | 5a7379a | 2009-03-01 04:40:10 +0000 | [diff] [blame] | 5950 | GV->setInitializer(Init); |
Fariborz Jahanian | dd0db2a | 2009-01-31 01:07:39 +0000 | [diff] [blame] | 5951 | GV->setSection("__DATA, __objc_data"); |
Fariborz Jahanian | 09796d6 | 2009-01-31 02:43:27 +0000 | [diff] [blame] | 5952 | GV->setAlignment( |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 5953 | CGM.getDataLayout().getABITypeAlignment(ObjCTypes.ClassnfABITy)); |
Fariborz Jahanian | cf55516 | 2009-01-31 00:59:10 +0000 | [diff] [blame] | 5954 | if (HiddenVisibility) |
| 5955 | GV->setVisibility(llvm::GlobalValue::HiddenVisibility); |
Fariborz Jahanian | 84394a5 | 2009-01-24 21:21:53 +0000 | [diff] [blame] | 5956 | return GV; |
Fariborz Jahanian | 058a1b7 | 2009-01-24 20:21:50 +0000 | [diff] [blame] | 5957 | } |
| 5958 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5959 | bool |
Fariborz Jahanian | ecfbdcb | 2009-05-21 01:03:45 +0000 | [diff] [blame] | 5960 | CGObjCNonFragileABIMac::ImplementationIsNonLazy(const ObjCImplDecl *OD) const { |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 5961 | return OD->getClassMethod(GetNullarySelector("load")) != nullptr; |
Daniel Dunbar | 74d4b12 | 2009-05-15 22:33:15 +0000 | [diff] [blame] | 5962 | } |
| 5963 | |
Daniel Dunbar | 9f89f2b | 2009-05-03 12:57:56 +0000 | [diff] [blame] | 5964 | void CGObjCNonFragileABIMac::GetClassSizeInfo(const ObjCImplementationDecl *OID, |
Daniel Dunbar | b02532a | 2009-04-19 23:41:48 +0000 | [diff] [blame] | 5965 | uint32_t &InstanceStart, |
| 5966 | uint32_t &InstanceSize) { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5967 | const ASTRecordLayout &RL = |
Daniel Dunbar | b4c79e0 | 2009-05-04 21:26:30 +0000 | [diff] [blame] | 5968 | CGM.getContext().getASTObjCImplementationLayout(OID); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5969 | |
Daniel Dunbar | 6e8575b | 2009-05-04 23:23:09 +0000 | [diff] [blame] | 5970 | // InstanceSize is really instance end. |
Ken Dyck | ec29903 | 2011-02-11 02:20:09 +0000 | [diff] [blame] | 5971 | InstanceSize = RL.getDataSize().getQuantity(); |
Daniel Dunbar | 6e8575b | 2009-05-04 23:23:09 +0000 | [diff] [blame] | 5972 | |
| 5973 | // If there are no fields, the start is the same as the end. |
| 5974 | if (!RL.getFieldCount()) |
| 5975 | InstanceStart = InstanceSize; |
| 5976 | else |
Ken Dyck | fb67ccd | 2011-04-14 00:43:09 +0000 | [diff] [blame] | 5977 | InstanceStart = RL.getFieldOffset(0) / CGM.getContext().getCharWidth(); |
Daniel Dunbar | b02532a | 2009-04-19 23:41:48 +0000 | [diff] [blame] | 5978 | } |
| 5979 | |
Fariborz Jahanian | aa23b57 | 2009-01-23 23:53:38 +0000 | [diff] [blame] | 5980 | void CGObjCNonFragileABIMac::GenerateClass(const ObjCImplementationDecl *ID) { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 5981 | std::string ClassName = ID->getObjCRuntimeNameAsString(); |
Fariborz Jahanian | aa23b57 | 2009-01-23 23:53:38 +0000 | [diff] [blame] | 5982 | if (!ObjCEmptyCacheVar) { |
| 5983 | ObjCEmptyCacheVar = new llvm::GlobalVariable( |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5984 | CGM.getModule(), ObjCTypes.CacheTy, false, |
| 5985 | llvm::GlobalValue::ExternalLinkage, nullptr, "_objc_empty_cache"); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 5986 | |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5987 | // Only OS X with deployment version <10.9 use the empty vtable symbol |
Fariborz Jahanian | 3da9a8f | 2013-10-24 17:40:28 +0000 | [diff] [blame] | 5988 | const llvm::Triple &Triple = CGM.getTarget().getTriple(); |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5989 | if (Triple.isMacOSX() && Triple.isMacOSXVersionLT(10, 9)) |
Fariborz Jahanian | 3da9a8f | 2013-10-24 17:40:28 +0000 | [diff] [blame] | 5990 | ObjCEmptyVtableVar = new llvm::GlobalVariable( |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 5991 | CGM.getModule(), ObjCTypes.ImpnfABITy, false, |
| 5992 | llvm::GlobalValue::ExternalLinkage, nullptr, "_objc_empty_vtable"); |
Fariborz Jahanian | aa23b57 | 2009-01-23 23:53:38 +0000 | [diff] [blame] | 5993 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5994 | assert(ID->getClassInterface() && |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 5995 | "CGObjCNonFragileABIMac::GenerateClass - class is 0"); |
Daniel Dunbar | 6c1aac8 | 2009-04-20 20:18:54 +0000 | [diff] [blame] | 5996 | // FIXME: Is this correct (that meta class size is never computed)? |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 5997 | uint32_t InstanceStart = |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 5998 | CGM.getDataLayout().getTypeAllocSize(ObjCTypes.ClassnfABITy); |
Fariborz Jahanian | 058a1b7 | 2009-01-24 20:21:50 +0000 | [diff] [blame] | 5999 | uint32_t InstanceSize = InstanceStart; |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 6000 | uint32_t flags = NonFragileABI_Class_Meta; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6001 | llvm::SmallString<64> ObjCMetaClassName(getMetaclassSymbolPrefix()); |
| 6002 | llvm::SmallString<64> ObjCClassName(getClassSymbolPrefix()); |
| 6003 | llvm::SmallString<64> TClassName; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6004 | |
Fariborz Jahanian | 058a1b7 | 2009-01-24 20:21:50 +0000 | [diff] [blame] | 6005 | llvm::GlobalVariable *SuperClassGV, *IsAGV; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6006 | |
John McCall | b03527a | 2012-10-17 04:53:31 +0000 | [diff] [blame] | 6007 | // Build the flags for the metaclass. |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6008 | bool classIsHidden = |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 6009 | ID->getClassInterface()->getVisibility() == HiddenVisibility; |
Fariborz Jahanian | cf55516 | 2009-01-31 00:59:10 +0000 | [diff] [blame] | 6010 | if (classIsHidden) |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 6011 | flags |= NonFragileABI_Class_Hidden; |
John McCall | b03527a | 2012-10-17 04:53:31 +0000 | [diff] [blame] | 6012 | |
| 6013 | // FIXME: why is this flag set on the metaclass? |
| 6014 | // ObjC metaclasses have no fields and don't really get constructed. |
| 6015 | if (ID->hasNonZeroConstructors() || ID->hasDestructors()) { |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 6016 | flags |= NonFragileABI_Class_HasCXXStructors; |
John McCall | b03527a | 2012-10-17 04:53:31 +0000 | [diff] [blame] | 6017 | if (!ID->hasNonZeroConstructors()) |
| 6018 | flags |= NonFragileABI_Class_HasCXXDestructorOnly; |
| 6019 | } |
| 6020 | |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 6021 | if (!ID->getClassInterface()->getSuperClass()) { |
Fariborz Jahanian | 058a1b7 | 2009-01-24 20:21:50 +0000 | [diff] [blame] | 6022 | // class is root |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 6023 | flags |= NonFragileABI_Class_Root; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6024 | TClassName = ObjCClassName; |
| 6025 | TClassName += ClassName; |
| 6026 | SuperClassGV = GetClassGlobal(TClassName.str(), |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6027 | ID->getClassInterface()->isWeakImported()); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6028 | TClassName = ObjCMetaClassName; |
| 6029 | TClassName += ClassName; |
| 6030 | IsAGV = GetClassGlobal(TClassName.str(), |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6031 | ID->getClassInterface()->isWeakImported()); |
Fariborz Jahanian | 058a1b7 | 2009-01-24 20:21:50 +0000 | [diff] [blame] | 6032 | } else { |
Fariborz Jahanian | 84394a5 | 2009-01-24 21:21:53 +0000 | [diff] [blame] | 6033 | // Has a root. Current class is not a root. |
Fariborz Jahanian | fab98c4 | 2009-02-26 18:23:47 +0000 | [diff] [blame] | 6034 | const ObjCInterfaceDecl *Root = ID->getClassInterface(); |
| 6035 | while (const ObjCInterfaceDecl *Super = Root->getSuperClass()) |
| 6036 | Root = Super; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6037 | TClassName = ObjCMetaClassName ; |
| 6038 | TClassName += Root->getObjCRuntimeNameAsString(); |
| 6039 | IsAGV = GetClassGlobal(TClassName.str(), |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6040 | Root->isWeakImported()); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6041 | |
Fariborz Jahanian | fab98c4 | 2009-02-26 18:23:47 +0000 | [diff] [blame] | 6042 | // work on super class metadata symbol. |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6043 | TClassName = ObjCMetaClassName; |
| 6044 | TClassName += ID->getClassInterface()->getSuperClass()->getObjCRuntimeNameAsString(); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6045 | SuperClassGV = GetClassGlobal( |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6046 | TClassName.str(), |
| 6047 | ID->getClassInterface()->getSuperClass()->isWeakImported()); |
Fariborz Jahanian | 058a1b7 | 2009-01-24 20:21:50 +0000 | [diff] [blame] | 6048 | } |
| 6049 | llvm::GlobalVariable *CLASS_RO_GV = BuildClassRoTInitializer(flags, |
| 6050 | InstanceStart, |
| 6051 | InstanceSize,ID); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6052 | TClassName = ObjCMetaClassName; |
| 6053 | TClassName += ClassName; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6054 | llvm::GlobalVariable *MetaTClass = BuildClassMetaData( |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6055 | TClassName.str(), IsAGV, SuperClassGV, CLASS_RO_GV, classIsHidden, |
| 6056 | ID->getClassInterface()->isWeakImported()); |
Fariborz Jahanian | a03d0dd | 2009-11-17 21:37:35 +0000 | [diff] [blame] | 6057 | DefinedMetaClasses.push_back(MetaTClass); |
Daniel Dunbar | 6ab187a | 2009-04-07 05:48:37 +0000 | [diff] [blame] | 6058 | |
Fariborz Jahanian | 84394a5 | 2009-01-24 21:21:53 +0000 | [diff] [blame] | 6059 | // Metadata for the class |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 6060 | flags = 0; |
Fariborz Jahanian | cf55516 | 2009-01-31 00:59:10 +0000 | [diff] [blame] | 6061 | if (classIsHidden) |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 6062 | flags |= NonFragileABI_Class_Hidden; |
John McCall | b03527a | 2012-10-17 04:53:31 +0000 | [diff] [blame] | 6063 | |
| 6064 | if (ID->hasNonZeroConstructors() || ID->hasDestructors()) { |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 6065 | flags |= NonFragileABI_Class_HasCXXStructors; |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 6066 | |
John McCall | b03527a | 2012-10-17 04:53:31 +0000 | [diff] [blame] | 6067 | // Set a flag to enable a runtime optimization when a class has |
| 6068 | // fields that require destruction but which don't require |
| 6069 | // anything except zero-initialization during construction. This |
| 6070 | // is most notably true of __strong and __weak types, but you can |
| 6071 | // also imagine there being C++ types with non-trivial default |
| 6072 | // constructors that merely set all fields to null. |
| 6073 | if (!ID->hasNonZeroConstructors()) |
| 6074 | flags |= NonFragileABI_Class_HasCXXDestructorOnly; |
| 6075 | } |
| 6076 | |
Douglas Gregor | 68584ed | 2009-06-18 16:11:24 +0000 | [diff] [blame] | 6077 | if (hasObjCExceptionAttribute(CGM.getContext(), ID->getClassInterface())) |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 6078 | flags |= NonFragileABI_Class_Exception; |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 6079 | |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 6080 | if (!ID->getClassInterface()->getSuperClass()) { |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 6081 | flags |= NonFragileABI_Class_Root; |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 6082 | SuperClassGV = nullptr; |
Chris Lattner | b7b58b1 | 2009-04-19 06:02:28 +0000 | [diff] [blame] | 6083 | } else { |
Fariborz Jahanian | 84394a5 | 2009-01-24 21:21:53 +0000 | [diff] [blame] | 6084 | // Has a root. Current class is not a root. |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6085 | TClassName = ObjCClassName; |
| 6086 | TClassName += ID->getClassInterface()->getSuperClass()->getObjCRuntimeNameAsString(); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6087 | SuperClassGV = GetClassGlobal( |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6088 | TClassName.str(), |
| 6089 | ID->getClassInterface()->getSuperClass()->isWeakImported()); |
Fariborz Jahanian | 84394a5 | 2009-01-24 21:21:53 +0000 | [diff] [blame] | 6090 | } |
Daniel Dunbar | 9f89f2b | 2009-05-03 12:57:56 +0000 | [diff] [blame] | 6091 | GetClassSizeInfo(ID, InstanceStart, InstanceSize); |
Fariborz Jahanian | 84394a5 | 2009-01-24 21:21:53 +0000 | [diff] [blame] | 6092 | CLASS_RO_GV = BuildClassRoTInitializer(flags, |
Fariborz Jahanian | f6a077e | 2009-01-24 23:43:01 +0000 | [diff] [blame] | 6093 | InstanceStart, |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6094 | InstanceSize, |
Fariborz Jahanian | f6a077e | 2009-01-24 23:43:01 +0000 | [diff] [blame] | 6095 | ID); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6096 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6097 | TClassName = ObjCClassName; |
| 6098 | TClassName += ClassName; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6099 | llvm::GlobalVariable *ClassMD = |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6100 | BuildClassMetaData(TClassName.str(), MetaTClass, SuperClassGV, CLASS_RO_GV, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6101 | classIsHidden, |
| 6102 | ID->getClassInterface()->isWeakImported()); |
Fariborz Jahanian | f87a0cc | 2009-01-30 20:55:31 +0000 | [diff] [blame] | 6103 | DefinedClasses.push_back(ClassMD); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6104 | ImplementedClasses.push_back(ID->getClassInterface()); |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 6105 | |
Daniel Dunbar | 74d4b12 | 2009-05-15 22:33:15 +0000 | [diff] [blame] | 6106 | // Determine if this class is also "non-lazy". |
| 6107 | if (ImplementationIsNonLazy(ID)) |
| 6108 | DefinedNonLazyClasses.push_back(ClassMD); |
| 6109 | |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 6110 | // Force the definition of the EHType if necessary. |
John McCall | 621915c | 2012-10-17 04:53:23 +0000 | [diff] [blame] | 6111 | if (flags & NonFragileABI_Class_Exception) |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 6112 | GetInterfaceEHType(ID->getClassInterface(), true); |
Fariborz Jahanian | 64089ce | 2011-04-22 22:02:28 +0000 | [diff] [blame] | 6113 | // Make sure method definition entries are all clear for next implementation. |
| 6114 | MethodDefinitions.clear(); |
Fariborz Jahanian | aa23b57 | 2009-01-23 23:53:38 +0000 | [diff] [blame] | 6115 | } |
| 6116 | |
Fariborz Jahanian | 8cfd397 | 2009-01-30 18:58:59 +0000 | [diff] [blame] | 6117 | /// GenerateProtocolRef - This routine is called to generate code for |
| 6118 | /// a protocol reference expression; as in: |
| 6119 | /// @code |
| 6120 | /// @protocol(Proto1); |
| 6121 | /// @endcode |
| 6122 | /// It generates a weak reference to l_OBJC_PROTOCOL_REFERENCE_$_Proto1 |
| 6123 | /// which will hold address of the protocol meta-data. |
| 6124 | /// |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 6125 | llvm::Value *CGObjCNonFragileABIMac::GenerateProtocolRef(CodeGenFunction &CGF, |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6126 | const ObjCProtocolDecl *PD) { |
| 6127 | |
Fariborz Jahanian | 960cd06 | 2009-04-10 18:47:34 +0000 | [diff] [blame] | 6128 | // This routine is called for @protocol only. So, we must build definition |
| 6129 | // of protocol's meta-data (not a reference to it!) |
| 6130 | // |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6131 | llvm::Constant *Init = |
| 6132 | llvm::ConstantExpr::getBitCast(GetOrEmitProtocol(PD), |
Douglas Gregor | 4c86fdb | 2012-01-17 18:36:30 +0000 | [diff] [blame] | 6133 | ObjCTypes.getExternalProtocolPtrTy()); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6134 | |
Fariborz Jahanian | 8cfd397 | 2009-01-30 18:58:59 +0000 | [diff] [blame] | 6135 | std::string ProtocolName("\01l_OBJC_PROTOCOL_REFERENCE_$_"); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6136 | ProtocolName += PD->getObjCRuntimeNameAsString(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6137 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6138 | CharUnits Align = CGF.getPointerAlign(); |
| 6139 | |
Fariborz Jahanian | 8cfd397 | 2009-01-30 18:58:59 +0000 | [diff] [blame] | 6140 | llvm::GlobalVariable *PTGV = CGM.getModule().getGlobalVariable(ProtocolName); |
| 6141 | if (PTGV) |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6142 | return CGF.Builder.CreateAlignedLoad(PTGV, Align); |
Fariborz Jahanian | 8cfd397 | 2009-01-30 18:58:59 +0000 | [diff] [blame] | 6143 | PTGV = new llvm::GlobalVariable( |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6144 | CGM.getModule(), |
| 6145 | Init->getType(), false, |
| 6146 | llvm::GlobalValue::WeakAnyLinkage, |
| 6147 | Init, |
| 6148 | ProtocolName); |
Fariborz Jahanian | 8cfd397 | 2009-01-30 18:58:59 +0000 | [diff] [blame] | 6149 | PTGV->setSection("__DATA, __objc_protorefs, coalesced, no_dead_strip"); |
| 6150 | PTGV->setVisibility(llvm::GlobalValue::HiddenVisibility); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6151 | PTGV->setAlignment(Align.getQuantity()); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6152 | CGM.addCompilerUsedGlobal(PTGV); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6153 | return CGF.Builder.CreateAlignedLoad(PTGV, Align); |
Fariborz Jahanian | 8cfd397 | 2009-01-30 18:58:59 +0000 | [diff] [blame] | 6154 | } |
| 6155 | |
Fariborz Jahanian | eb062d9 | 2009-01-26 18:32:24 +0000 | [diff] [blame] | 6156 | /// GenerateCategory - Build metadata for a category implementation. |
| 6157 | /// struct _category_t { |
| 6158 | /// const char * const name; |
| 6159 | /// struct _class_t *const cls; |
| 6160 | /// const struct _method_list_t * const instance_methods; |
| 6161 | /// const struct _method_list_t * const class_methods; |
| 6162 | /// const struct _protocol_list_t * const protocols; |
| 6163 | /// const struct _prop_list_t * const properties; |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6164 | /// const struct _prop_list_t * const class_properties; |
| 6165 | /// const uint32_t size; |
Fariborz Jahanian | eb062d9 | 2009-01-26 18:32:24 +0000 | [diff] [blame] | 6166 | /// } |
| 6167 | /// |
Daniel Dunbar | 74d4b12 | 2009-05-15 22:33:15 +0000 | [diff] [blame] | 6168 | void CGObjCNonFragileABIMac::GenerateCategory(const ObjCCategoryImplDecl *OCD) { |
Fariborz Jahanian | eb062d9 | 2009-01-26 18:32:24 +0000 | [diff] [blame] | 6169 | const ObjCInterfaceDecl *Interface = OCD->getClassInterface(); |
Fariborz Jahanian | f6317dd | 2009-01-26 22:58:07 +0000 | [diff] [blame] | 6170 | const char *Prefix = "\01l_OBJC_$_CATEGORY_"; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6171 | |
| 6172 | llvm::SmallString<64> ExtCatName(Prefix); |
| 6173 | ExtCatName += Interface->getObjCRuntimeNameAsString(); |
| 6174 | ExtCatName += "_$_"; |
| 6175 | ExtCatName += OCD->getNameAsString(); |
| 6176 | |
| 6177 | llvm::SmallString<64> ExtClassName(getClassSymbolPrefix()); |
| 6178 | ExtClassName += Interface->getObjCRuntimeNameAsString(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6179 | |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6180 | llvm::Constant *Values[8]; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6181 | Values[0] = GetClassName(OCD->getIdentifier()->getName()); |
Fariborz Jahanian | eb062d9 | 2009-01-26 18:32:24 +0000 | [diff] [blame] | 6182 | // meta-class entry symbol |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6183 | llvm::GlobalVariable *ClassGV = |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6184 | GetClassGlobal(ExtClassName.str(), Interface->isWeakImported()); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6185 | |
Fariborz Jahanian | eb062d9 | 2009-01-26 18:32:24 +0000 | [diff] [blame] | 6186 | Values[1] = ClassGV; |
Fariborz Jahanian | f6317dd | 2009-01-26 22:58:07 +0000 | [diff] [blame] | 6187 | std::vector<llvm::Constant*> Methods; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6188 | llvm::SmallString<64> MethodListName(Prefix); |
| 6189 | |
| 6190 | MethodListName += "INSTANCE_METHODS_"; |
| 6191 | MethodListName += Interface->getObjCRuntimeNameAsString(); |
| 6192 | MethodListName += "_$_"; |
| 6193 | MethodListName += OCD->getName(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6194 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6195 | for (const auto *I : OCD->instance_methods()) |
Fariborz Jahanian | f6317dd | 2009-01-26 22:58:07 +0000 | [diff] [blame] | 6196 | // Instance methods should always be defined. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6197 | Methods.push_back(GetMethodConstant(I)); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6198 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6199 | Values[2] = EmitMethodList(MethodListName.str(), |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6200 | "__DATA, __objc_const", |
Fariborz Jahanian | f6317dd | 2009-01-26 22:58:07 +0000 | [diff] [blame] | 6201 | Methods); |
| 6202 | |
| 6203 | MethodListName = Prefix; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6204 | MethodListName += "CLASS_METHODS_"; |
| 6205 | MethodListName += Interface->getObjCRuntimeNameAsString(); |
| 6206 | MethodListName += "_$_"; |
| 6207 | MethodListName += OCD->getNameAsString(); |
| 6208 | |
Fariborz Jahanian | f6317dd | 2009-01-26 22:58:07 +0000 | [diff] [blame] | 6209 | Methods.clear(); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6210 | for (const auto *I : OCD->class_methods()) |
Fariborz Jahanian | f6317dd | 2009-01-26 22:58:07 +0000 | [diff] [blame] | 6211 | // Class methods should always be defined. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6212 | Methods.push_back(GetMethodConstant(I)); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6213 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6214 | Values[3] = EmitMethodList(MethodListName.str(), |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6215 | "__DATA, __objc_const", |
Fariborz Jahanian | f6317dd | 2009-01-26 22:58:07 +0000 | [diff] [blame] | 6216 | Methods); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6217 | const ObjCCategoryDecl *Category = |
Fariborz Jahanian | 5de14dc | 2009-01-28 22:18:42 +0000 | [diff] [blame] | 6218 | Interface->FindCategoryDeclaration(OCD->getIdentifier()); |
Fariborz Jahanian | 943ed6f | 2009-02-13 17:52:22 +0000 | [diff] [blame] | 6219 | if (Category) { |
Dylan Noblesmith | f7ccbad | 2012-02-05 02:13:05 +0000 | [diff] [blame] | 6220 | SmallString<256> ExtName; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6221 | llvm::raw_svector_ostream(ExtName) << Interface->getObjCRuntimeNameAsString() << "_$_" |
Daniel Dunbar | 9c29bf5 | 2009-10-18 20:48:59 +0000 | [diff] [blame] | 6222 | << OCD->getName(); |
Fariborz Jahanian | 943ed6f | 2009-02-13 17:52:22 +0000 | [diff] [blame] | 6223 | Values[4] = EmitProtocolList("\01l_OBJC_CATEGORY_PROTOCOLS_$_" |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6224 | + Interface->getObjCRuntimeNameAsString() + "_$_" |
| 6225 | + Category->getName(), |
| 6226 | Category->protocol_begin(), |
| 6227 | Category->protocol_end()); |
Daniel Dunbar | 9c29bf5 | 2009-10-18 20:48:59 +0000 | [diff] [blame] | 6228 | Values[5] = EmitPropertyList("\01l_OBJC_$_PROP_LIST_" + ExtName.str(), |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6229 | OCD, Category, ObjCTypes, false); |
| 6230 | Values[6] = EmitPropertyList("\01l_OBJC_$_CLASS_PROP_LIST_" + ExtName.str(), |
| 6231 | OCD, Category, ObjCTypes, true); |
Mike Stump | b3589f4 | 2009-07-30 22:28:39 +0000 | [diff] [blame] | 6232 | } else { |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 6233 | Values[4] = llvm::Constant::getNullValue(ObjCTypes.ProtocolListnfABIPtrTy); |
| 6234 | Values[5] = llvm::Constant::getNullValue(ObjCTypes.PropertyListPtrTy); |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6235 | Values[6] = llvm::Constant::getNullValue(ObjCTypes.PropertyListPtrTy); |
Fariborz Jahanian | 943ed6f | 2009-02-13 17:52:22 +0000 | [diff] [blame] | 6236 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6237 | |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6238 | unsigned Size = CGM.getDataLayout().getTypeAllocSize(ObjCTypes.CategorynfABITy); |
| 6239 | Values[7] = llvm::ConstantInt::get(ObjCTypes.IntTy, Size); |
| 6240 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6241 | llvm::Constant *Init = |
| 6242 | llvm::ConstantStruct::get(ObjCTypes.CategorynfABITy, |
Fariborz Jahanian | eb062d9 | 2009-01-26 18:32:24 +0000 | [diff] [blame] | 6243 | Values); |
| 6244 | llvm::GlobalVariable *GCATV |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6245 | = new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.CategorynfABITy, |
Fariborz Jahanian | eb062d9 | 2009-01-26 18:32:24 +0000 | [diff] [blame] | 6246 | false, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6247 | llvm::GlobalValue::PrivateLinkage, |
Fariborz Jahanian | eb062d9 | 2009-01-26 18:32:24 +0000 | [diff] [blame] | 6248 | Init, |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6249 | ExtCatName.str()); |
Fariborz Jahanian | 09796d6 | 2009-01-31 02:43:27 +0000 | [diff] [blame] | 6250 | GCATV->setAlignment( |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 6251 | CGM.getDataLayout().getABITypeAlignment(ObjCTypes.CategorynfABITy)); |
Fariborz Jahanian | 1bf0afb | 2009-01-28 01:05:23 +0000 | [diff] [blame] | 6252 | GCATV->setSection("__DATA, __objc_const"); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6253 | CGM.addCompilerUsedGlobal(GCATV); |
Fariborz Jahanian | eb062d9 | 2009-01-26 18:32:24 +0000 | [diff] [blame] | 6254 | DefinedCategories.push_back(GCATV); |
Daniel Dunbar | 74d4b12 | 2009-05-15 22:33:15 +0000 | [diff] [blame] | 6255 | |
| 6256 | // Determine if this category is also "non-lazy". |
| 6257 | if (ImplementationIsNonLazy(OCD)) |
| 6258 | DefinedNonLazyCategories.push_back(GCATV); |
Fariborz Jahanian | 64089ce | 2011-04-22 22:02:28 +0000 | [diff] [blame] | 6259 | // method definition entries must be clear for next implementation. |
| 6260 | MethodDefinitions.clear(); |
Fariborz Jahanian | eb062d9 | 2009-01-26 18:32:24 +0000 | [diff] [blame] | 6261 | } |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 6262 | |
| 6263 | /// GetMethodConstant - Return a struct objc_method constant for the |
| 6264 | /// given method if it has been defined. The result is null if the |
| 6265 | /// method has not been defined. The return value has type MethodPtrTy. |
| 6266 | llvm::Constant *CGObjCNonFragileABIMac::GetMethodConstant( |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6267 | const ObjCMethodDecl *MD) { |
Argyrios Kyrtzidis | 9d50c06 | 2010-08-09 10:54:20 +0000 | [diff] [blame] | 6268 | llvm::Function *Fn = GetMethodDefinition(MD); |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 6269 | if (!Fn) |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 6270 | return nullptr; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6271 | |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 6272 | llvm::Constant *Method[] = { |
Owen Anderson | 3c4972d | 2009-07-29 18:54:39 +0000 | [diff] [blame] | 6273 | llvm::ConstantExpr::getBitCast(GetMethodVarName(MD->getSelector()), |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 6274 | ObjCTypes.SelectorPtrTy), |
| 6275 | GetMethodVarType(MD), |
| 6276 | llvm::ConstantExpr::getBitCast(Fn, ObjCTypes.Int8PtrTy) |
| 6277 | }; |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 6278 | return llvm::ConstantStruct::get(ObjCTypes.MethodTy, Method); |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 6279 | } |
| 6280 | |
| 6281 | /// EmitMethodList - Build meta-data for method declarations |
| 6282 | /// struct _method_list_t { |
| 6283 | /// uint32_t entsize; // sizeof(struct _objc_method) |
| 6284 | /// uint32_t method_count; |
| 6285 | /// struct _objc_method method_list[method_count]; |
| 6286 | /// } |
| 6287 | /// |
Bill Wendling | bb02855 | 2012-02-07 09:25:09 +0000 | [diff] [blame] | 6288 | llvm::Constant * |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6289 | CGObjCNonFragileABIMac::EmitMethodList(Twine Name, StringRef Section, |
| 6290 | ArrayRef<llvm::Constant *> Methods) { |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 6291 | // Return null for empty list. |
| 6292 | if (Methods.empty()) |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 6293 | return llvm::Constant::getNullValue(ObjCTypes.MethodListnfABIPtrTy); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6294 | |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 6295 | llvm::Constant *Values[3]; |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 6296 | // sizeof(struct _objc_method) |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 6297 | unsigned Size = CGM.getDataLayout().getTypeAllocSize(ObjCTypes.MethodTy); |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 6298 | Values[0] = llvm::ConstantInt::get(ObjCTypes.IntTy, Size); |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 6299 | // method_count |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 6300 | Values[1] = llvm::ConstantInt::get(ObjCTypes.IntTy, Methods.size()); |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 6301 | llvm::ArrayType *AT = llvm::ArrayType::get(ObjCTypes.MethodTy, |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 6302 | Methods.size()); |
Owen Anderson | 7db6d83 | 2009-07-28 18:33:04 +0000 | [diff] [blame] | 6303 | Values[2] = llvm::ConstantArray::get(AT, Methods); |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 6304 | llvm::Constant *Init = llvm::ConstantStruct::getAnon(Values); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6305 | |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 6306 | llvm::GlobalVariable *GV = |
Owen Anderson | 1c431b3 | 2009-07-08 19:05:04 +0000 | [diff] [blame] | 6307 | new llvm::GlobalVariable(CGM.getModule(), Init->getType(), false, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6308 | llvm::GlobalValue::PrivateLinkage, Init, Name); |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 6309 | GV->setAlignment(CGM.getDataLayout().getABITypeAlignment(Init->getType())); |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 6310 | GV->setSection(Section); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6311 | CGM.addCompilerUsedGlobal(GV); |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 6312 | return llvm::ConstantExpr::getBitCast(GV, ObjCTypes.MethodListnfABIPtrTy); |
Fariborz Jahanian | 493dab7 | 2009-01-26 21:38:32 +0000 | [diff] [blame] | 6313 | } |
Fariborz Jahanian | 98abf4b | 2009-01-27 19:38:51 +0000 | [diff] [blame] | 6314 | |
Fariborz Jahanian | ed157d3 | 2009-02-10 20:21:06 +0000 | [diff] [blame] | 6315 | /// ObjCIvarOffsetVariable - Returns the ivar offset variable for |
| 6316 | /// the given ivar. |
Daniel Dunbar | e83be12 | 2010-04-02 21:14:02 +0000 | [diff] [blame] | 6317 | llvm::GlobalVariable * |
| 6318 | CGObjCNonFragileABIMac::ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID, |
| 6319 | const ObjCIvarDecl *Ivar) { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6320 | |
Daniel Dunbar | e83be12 | 2010-04-02 21:14:02 +0000 | [diff] [blame] | 6321 | const ObjCInterfaceDecl *Container = Ivar->getContainingInterface(); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6322 | llvm::SmallString<64> Name("OBJC_IVAR_$_"); |
| 6323 | Name += Container->getObjCRuntimeNameAsString(); |
| 6324 | Name += "."; |
| 6325 | Name += Ivar->getName(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6326 | llvm::GlobalVariable *IvarOffsetGV = |
Fariborz Jahanian | ed157d3 | 2009-02-10 20:21:06 +0000 | [diff] [blame] | 6327 | CGM.getModule().getGlobalVariable(Name); |
| 6328 | if (!IvarOffsetGV) |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6329 | IvarOffsetGV = new llvm::GlobalVariable( |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6330 | CGM.getModule(), ObjCTypes.IvarOffsetVarTy, false, |
| 6331 | llvm::GlobalValue::ExternalLinkage, nullptr, Name.str()); |
Fariborz Jahanian | ed157d3 | 2009-02-10 20:21:06 +0000 | [diff] [blame] | 6332 | return IvarOffsetGV; |
| 6333 | } |
| 6334 | |
Daniel Dunbar | e83be12 | 2010-04-02 21:14:02 +0000 | [diff] [blame] | 6335 | llvm::Constant * |
| 6336 | CGObjCNonFragileABIMac::EmitIvarOffsetVar(const ObjCInterfaceDecl *ID, |
| 6337 | const ObjCIvarDecl *Ivar, |
Eli Friedman | e5b4666 | 2012-11-06 22:15:52 +0000 | [diff] [blame] | 6338 | unsigned long int Offset) { |
Daniel Dunbar | 737c502 | 2009-04-19 00:44:02 +0000 | [diff] [blame] | 6339 | llvm::GlobalVariable *IvarOffsetGV = ObjCIvarOffsetVariable(ID, Ivar); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6340 | IvarOffsetGV->setInitializer( |
| 6341 | llvm::ConstantInt::get(ObjCTypes.IvarOffsetVarTy, Offset)); |
Fariborz Jahanian | 09796d6 | 2009-01-31 02:43:27 +0000 | [diff] [blame] | 6342 | IvarOffsetGV->setAlignment( |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6343 | CGM.getDataLayout().getABITypeAlignment(ObjCTypes.IvarOffsetVarTy)); |
Daniel Dunbar | 737c502 | 2009-04-19 00:44:02 +0000 | [diff] [blame] | 6344 | |
Mike Stump | f5408fe | 2009-05-16 07:57:57 +0000 | [diff] [blame] | 6345 | // FIXME: This matches gcc, but shouldn't the visibility be set on the use as |
| 6346 | // well (i.e., in ObjCIvarOffsetVariable). |
Daniel Dunbar | 737c502 | 2009-04-19 00:44:02 +0000 | [diff] [blame] | 6347 | if (Ivar->getAccessControl() == ObjCIvarDecl::Private || |
| 6348 | Ivar->getAccessControl() == ObjCIvarDecl::Package || |
John McCall | 1fb0caa | 2010-10-22 21:05:15 +0000 | [diff] [blame] | 6349 | ID->getVisibility() == HiddenVisibility) |
Fariborz Jahanian | 2fa5a27 | 2009-01-28 01:36:42 +0000 | [diff] [blame] | 6350 | IvarOffsetGV->setVisibility(llvm::GlobalValue::HiddenVisibility); |
Daniel Dunbar | 04d4078 | 2009-04-14 06:00:08 +0000 | [diff] [blame] | 6351 | else |
Fariborz Jahanian | 77c9fd2 | 2009-04-06 18:30:00 +0000 | [diff] [blame] | 6352 | IvarOffsetGV->setVisibility(llvm::GlobalValue::DefaultVisibility); |
Bill Wendling | 1f38251 | 2011-05-04 21:37:25 +0000 | [diff] [blame] | 6353 | IvarOffsetGV->setSection("__DATA, __objc_ivar"); |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 6354 | return IvarOffsetGV; |
Fariborz Jahanian | 1bf0afb | 2009-01-28 01:05:23 +0000 | [diff] [blame] | 6355 | } |
| 6356 | |
Fariborz Jahanian | 98abf4b | 2009-01-27 19:38:51 +0000 | [diff] [blame] | 6357 | /// EmitIvarList - Emit the ivar list for the given |
Daniel Dunbar | 1139452 | 2009-04-18 08:51:00 +0000 | [diff] [blame] | 6358 | /// implementation. The return value has type |
Fariborz Jahanian | 98abf4b | 2009-01-27 19:38:51 +0000 | [diff] [blame] | 6359 | /// IvarListnfABIPtrTy. |
| 6360 | /// struct _ivar_t { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6361 | /// unsigned [long] int *offset; // pointer to ivar offset location |
Fariborz Jahanian | 98abf4b | 2009-01-27 19:38:51 +0000 | [diff] [blame] | 6362 | /// char *name; |
| 6363 | /// char *type; |
| 6364 | /// uint32_t alignment; |
| 6365 | /// uint32_t size; |
| 6366 | /// } |
| 6367 | /// struct _ivar_list_t { |
| 6368 | /// uint32 entsize; // sizeof(struct _ivar_t) |
| 6369 | /// uint32 count; |
| 6370 | /// struct _iver_t list[count]; |
| 6371 | /// } |
| 6372 | /// |
Daniel Dunbar | 3e5f0d8 | 2009-04-20 06:54:31 +0000 | [diff] [blame] | 6373 | |
Fariborz Jahanian | 98abf4b | 2009-01-27 19:38:51 +0000 | [diff] [blame] | 6374 | llvm::Constant *CGObjCNonFragileABIMac::EmitIvarList( |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6375 | const ObjCImplementationDecl *ID) { |
| 6376 | |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 6377 | std::vector<llvm::Constant*> Ivars; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6378 | |
Jordy Rose | db8264e | 2011-07-22 02:08:32 +0000 | [diff] [blame] | 6379 | const ObjCInterfaceDecl *OID = ID->getClassInterface(); |
Fariborz Jahanian | 98abf4b | 2009-01-27 19:38:51 +0000 | [diff] [blame] | 6380 | assert(OID && "CGObjCNonFragileABIMac::EmitIvarList - null interface"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6381 | |
Fariborz Jahanian | 1bf0afb | 2009-01-28 01:05:23 +0000 | [diff] [blame] | 6382 | // FIXME. Consolidate this with similar code in GenerateClass. |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6383 | |
Jordy Rose | db8264e | 2011-07-22 02:08:32 +0000 | [diff] [blame] | 6384 | for (const ObjCIvarDecl *IVD = OID->all_declared_ivar_begin(); |
Fariborz Jahanian | bf9eb88 | 2011-06-28 18:05:25 +0000 | [diff] [blame] | 6385 | IVD; IVD = IVD->getNextIvar()) { |
Fariborz Jahanian | 8e6ac1d | 2009-06-04 01:19:09 +0000 | [diff] [blame] | 6386 | // Ignore unnamed bit-fields. |
| 6387 | if (!IVD->getDeclName()) |
| 6388 | continue; |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 6389 | llvm::Constant *Ivar[5]; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6390 | Ivar[0] = EmitIvarOffsetVar(ID->getClassInterface(), IVD, |
Daniel Dunbar | 9f89f2b | 2009-05-03 12:57:56 +0000 | [diff] [blame] | 6391 | ComputeIvarBaseOffset(CGM, ID, IVD)); |
Daniel Dunbar | 3fea0c0 | 2009-04-22 08:22:17 +0000 | [diff] [blame] | 6392 | Ivar[1] = GetMethodVarName(IVD->getIdentifier()); |
| 6393 | Ivar[2] = GetMethodVarType(IVD); |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 6394 | llvm::Type *FieldTy = |
Daniel Dunbar | 3fea0c0 | 2009-04-22 08:22:17 +0000 | [diff] [blame] | 6395 | CGM.getTypes().ConvertTypeForMem(IVD->getType()); |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 6396 | unsigned Size = CGM.getDataLayout().getTypeAllocSize(FieldTy); |
Fariborz Jahanian | 98abf4b | 2009-01-27 19:38:51 +0000 | [diff] [blame] | 6397 | unsigned Align = CGM.getContext().getPreferredTypeAlign( |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6398 | IVD->getType().getTypePtr()) >> 3; |
Fariborz Jahanian | 98abf4b | 2009-01-27 19:38:51 +0000 | [diff] [blame] | 6399 | Align = llvm::Log2_32(Align); |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 6400 | Ivar[3] = llvm::ConstantInt::get(ObjCTypes.IntTy, Align); |
Daniel Dunbar | 91636d6 | 2009-04-20 00:33:43 +0000 | [diff] [blame] | 6401 | // NOTE. Size of a bitfield does not match gcc's, because of the |
| 6402 | // way bitfields are treated special in each. But I am told that |
| 6403 | // 'size' for bitfield ivars is ignored by the runtime so it does |
| 6404 | // not matter. If it matters, there is enough info to get the |
| 6405 | // bitfield right! |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 6406 | Ivar[4] = llvm::ConstantInt::get(ObjCTypes.IntTy, Size); |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 6407 | Ivars.push_back(llvm::ConstantStruct::get(ObjCTypes.IvarnfABITy, Ivar)); |
Fariborz Jahanian | 98abf4b | 2009-01-27 19:38:51 +0000 | [diff] [blame] | 6408 | } |
| 6409 | // Return null for empty list. |
| 6410 | if (Ivars.empty()) |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 6411 | return llvm::Constant::getNullValue(ObjCTypes.IvarListnfABIPtrTy); |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 6412 | |
| 6413 | llvm::Constant *Values[3]; |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 6414 | unsigned Size = CGM.getDataLayout().getTypeAllocSize(ObjCTypes.IvarnfABITy); |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 6415 | Values[0] = llvm::ConstantInt::get(ObjCTypes.IntTy, Size); |
| 6416 | Values[1] = llvm::ConstantInt::get(ObjCTypes.IntTy, Ivars.size()); |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 6417 | llvm::ArrayType *AT = llvm::ArrayType::get(ObjCTypes.IvarnfABITy, |
Fariborz Jahanian | 98abf4b | 2009-01-27 19:38:51 +0000 | [diff] [blame] | 6418 | Ivars.size()); |
Owen Anderson | 7db6d83 | 2009-07-28 18:33:04 +0000 | [diff] [blame] | 6419 | Values[2] = llvm::ConstantArray::get(AT, Ivars); |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 6420 | llvm::Constant *Init = llvm::ConstantStruct::getAnon(Values); |
Fariborz Jahanian | 98abf4b | 2009-01-27 19:38:51 +0000 | [diff] [blame] | 6421 | const char *Prefix = "\01l_OBJC_$_INSTANCE_VARIABLES_"; |
| 6422 | llvm::GlobalVariable *GV = |
Owen Anderson | 1c431b3 | 2009-07-08 19:05:04 +0000 | [diff] [blame] | 6423 | new llvm::GlobalVariable(CGM.getModule(), Init->getType(), false, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6424 | llvm::GlobalValue::PrivateLinkage, |
Fariborz Jahanian | 98abf4b | 2009-01-27 19:38:51 +0000 | [diff] [blame] | 6425 | Init, |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6426 | Prefix + OID->getObjCRuntimeNameAsString()); |
Fariborz Jahanian | 09796d6 | 2009-01-31 02:43:27 +0000 | [diff] [blame] | 6427 | GV->setAlignment( |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 6428 | CGM.getDataLayout().getABITypeAlignment(Init->getType())); |
Fariborz Jahanian | 1bf0afb | 2009-01-28 01:05:23 +0000 | [diff] [blame] | 6429 | GV->setSection("__DATA, __objc_const"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6430 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6431 | CGM.addCompilerUsedGlobal(GV); |
Owen Anderson | 3c4972d | 2009-07-29 18:54:39 +0000 | [diff] [blame] | 6432 | return llvm::ConstantExpr::getBitCast(GV, ObjCTypes.IvarListnfABIPtrTy); |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6433 | } |
| 6434 | |
| 6435 | llvm::Constant *CGObjCNonFragileABIMac::GetOrEmitProtocolRef( |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6436 | const ObjCProtocolDecl *PD) { |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6437 | llvm::GlobalVariable *&Entry = Protocols[PD->getIdentifier()]; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6438 | |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6439 | if (!Entry) |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6440 | // We use the initializer as a marker of whether this is a forward |
| 6441 | // reference or not. At module finalization we add the empty |
| 6442 | // contents for protocols which were referenced but never defined. |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6443 | Entry = |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6444 | new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.ProtocolnfABITy, |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6445 | false, llvm::GlobalValue::ExternalLinkage, |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 6446 | nullptr, |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6447 | "\01l_OBJC_PROTOCOL_$_" + PD->getObjCRuntimeNameAsString()); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6448 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6449 | return Entry; |
| 6450 | } |
| 6451 | |
| 6452 | /// GetOrEmitProtocol - Generate the protocol meta-data: |
| 6453 | /// @code |
| 6454 | /// struct _protocol_t { |
| 6455 | /// id isa; // NULL |
| 6456 | /// const char * const protocol_name; |
| 6457 | /// const struct _protocol_list_t * protocol_list; // super protocols |
| 6458 | /// const struct method_list_t * const instance_methods; |
| 6459 | /// const struct method_list_t * const class_methods; |
| 6460 | /// const struct method_list_t *optionalInstanceMethods; |
| 6461 | /// const struct method_list_t *optionalClassMethods; |
| 6462 | /// const struct _prop_list_t * properties; |
| 6463 | /// const uint32_t size; // sizeof(struct _protocol_t) |
| 6464 | /// const uint32_t flags; // = 0 |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 6465 | /// const char ** extendedMethodTypes; |
Pirama Arumuga Nainar | 58878f8 | 2015-05-06 11:48:57 -0700 | [diff] [blame] | 6466 | /// const char *demangledName; |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6467 | /// const struct _prop_list_t * class_properties; |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6468 | /// } |
| 6469 | /// @endcode |
| 6470 | /// |
| 6471 | |
| 6472 | llvm::Constant *CGObjCNonFragileABIMac::GetOrEmitProtocol( |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6473 | const ObjCProtocolDecl *PD) { |
John McCall | 50651b9 | 2012-03-30 21:29:05 +0000 | [diff] [blame] | 6474 | llvm::GlobalVariable *Entry = Protocols[PD->getIdentifier()]; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6475 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6476 | // Early exit if a defining object has already been generated. |
| 6477 | if (Entry && Entry->hasInitializer()) |
| 6478 | return Entry; |
| 6479 | |
Douglas Gregor | 1d784b2 | 2012-01-01 19:51:50 +0000 | [diff] [blame] | 6480 | // Use the protocol definition, if there is one. |
| 6481 | if (const ObjCProtocolDecl *Def = PD->getDefinition()) |
| 6482 | PD = Def; |
| 6483 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6484 | // Construct method lists. |
| 6485 | std::vector<llvm::Constant*> InstanceMethods, ClassMethods; |
| 6486 | std::vector<llvm::Constant*> OptInstanceMethods, OptClassMethods; |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 6487 | std::vector<llvm::Constant*> MethodTypesExt, OptMethodTypesExt; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6488 | for (const auto *MD : PD->instance_methods()) { |
Fariborz Jahanian | 3819a0b | 2009-01-30 00:46:37 +0000 | [diff] [blame] | 6489 | llvm::Constant *C = GetMethodDescriptionConstant(MD); |
Douglas Gregor | f968d83 | 2011-05-27 01:19:52 +0000 | [diff] [blame] | 6490 | if (!C) |
| 6491 | return GetOrEmitProtocolRef(PD); |
| 6492 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6493 | if (MD->getImplementationControl() == ObjCMethodDecl::Optional) { |
| 6494 | OptInstanceMethods.push_back(C); |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 6495 | OptMethodTypesExt.push_back(GetMethodVarType(MD, true)); |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6496 | } else { |
| 6497 | InstanceMethods.push_back(C); |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 6498 | MethodTypesExt.push_back(GetMethodVarType(MD, true)); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6499 | } |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6500 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6501 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6502 | for (const auto *MD : PD->class_methods()) { |
Fariborz Jahanian | 3819a0b | 2009-01-30 00:46:37 +0000 | [diff] [blame] | 6503 | llvm::Constant *C = GetMethodDescriptionConstant(MD); |
Douglas Gregor | f968d83 | 2011-05-27 01:19:52 +0000 | [diff] [blame] | 6504 | if (!C) |
| 6505 | return GetOrEmitProtocolRef(PD); |
| 6506 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6507 | if (MD->getImplementationControl() == ObjCMethodDecl::Optional) { |
| 6508 | OptClassMethods.push_back(C); |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 6509 | OptMethodTypesExt.push_back(GetMethodVarType(MD, true)); |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6510 | } else { |
| 6511 | ClassMethods.push_back(C); |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 6512 | MethodTypesExt.push_back(GetMethodVarType(MD, true)); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6513 | } |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6514 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6515 | |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 6516 | MethodTypesExt.insert(MethodTypesExt.end(), |
| 6517 | OptMethodTypesExt.begin(), OptMethodTypesExt.end()); |
| 6518 | |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6519 | llvm::Constant *Values[13]; |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6520 | // isa is NULL |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 6521 | Values[0] = llvm::Constant::getNullValue(ObjCTypes.ObjectPtrTy); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6522 | Values[1] = GetClassName(PD->getObjCRuntimeNameAsString()); |
| 6523 | Values[2] = EmitProtocolList("\01l_OBJC_$_PROTOCOL_REFS_" + PD->getObjCRuntimeNameAsString(), |
Daniel Dunbar | 9c29bf5 | 2009-10-18 20:48:59 +0000 | [diff] [blame] | 6524 | PD->protocol_begin(), |
| 6525 | PD->protocol_end()); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6526 | |
Fariborz Jahanian | 3819a0b | 2009-01-30 00:46:37 +0000 | [diff] [blame] | 6527 | Values[3] = EmitMethodList("\01l_OBJC_$_PROTOCOL_INSTANCE_METHODS_" |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6528 | + PD->getObjCRuntimeNameAsString(), |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6529 | "__DATA, __objc_const", |
| 6530 | InstanceMethods); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6531 | Values[4] = EmitMethodList("\01l_OBJC_$_PROTOCOL_CLASS_METHODS_" |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6532 | + PD->getObjCRuntimeNameAsString(), |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6533 | "__DATA, __objc_const", |
| 6534 | ClassMethods); |
Fariborz Jahanian | 3819a0b | 2009-01-30 00:46:37 +0000 | [diff] [blame] | 6535 | Values[5] = EmitMethodList("\01l_OBJC_$_PROTOCOL_INSTANCE_METHODS_OPT_" |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6536 | + PD->getObjCRuntimeNameAsString(), |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6537 | "__DATA, __objc_const", |
| 6538 | OptInstanceMethods); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6539 | Values[6] = EmitMethodList("\01l_OBJC_$_PROTOCOL_CLASS_METHODS_OPT_" |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6540 | + PD->getObjCRuntimeNameAsString(), |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6541 | "__DATA, __objc_const", |
| 6542 | OptClassMethods); |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6543 | Values[7] = EmitPropertyList( |
| 6544 | "\01l_OBJC_$_PROP_LIST_" + PD->getObjCRuntimeNameAsString(), |
| 6545 | nullptr, PD, ObjCTypes, false); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6546 | uint32_t Size = |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 6547 | CGM.getDataLayout().getTypeAllocSize(ObjCTypes.ProtocolnfABITy); |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 6548 | Values[8] = llvm::ConstantInt::get(ObjCTypes.IntTy, Size); |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 6549 | Values[9] = llvm::Constant::getNullValue(ObjCTypes.IntTy); |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 6550 | Values[10] = EmitProtocolMethodTypes("\01l_OBJC_$_PROTOCOL_METHOD_TYPES_" |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6551 | + PD->getObjCRuntimeNameAsString(), |
Bob Wilson | dc8dab6 | 2011-11-30 01:57:58 +0000 | [diff] [blame] | 6552 | MethodTypesExt, ObjCTypes); |
Pirama Arumuga Nainar | 58878f8 | 2015-05-06 11:48:57 -0700 | [diff] [blame] | 6553 | // const char *demangledName; |
| 6554 | Values[11] = llvm::Constant::getNullValue(ObjCTypes.Int8PtrTy); |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6555 | |
| 6556 | Values[12] = EmitPropertyList( |
| 6557 | "\01l_OBJC_$_CLASS_PROP_LIST_" + PD->getObjCRuntimeNameAsString(), |
| 6558 | nullptr, PD, ObjCTypes, true); |
Pirama Arumuga Nainar | 58878f8 | 2015-05-06 11:48:57 -0700 | [diff] [blame] | 6559 | |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 6560 | llvm::Constant *Init = llvm::ConstantStruct::get(ObjCTypes.ProtocolnfABITy, |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6561 | Values); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6562 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6563 | if (Entry) { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6564 | // Already created, fix the linkage and update the initializer. |
| 6565 | Entry->setLinkage(llvm::GlobalValue::WeakAnyLinkage); |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6566 | Entry->setInitializer(Init); |
| 6567 | } else { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6568 | Entry = |
Daniel Dunbar | 9c29bf5 | 2009-10-18 20:48:59 +0000 | [diff] [blame] | 6569 | new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.ProtocolnfABITy, |
| 6570 | false, llvm::GlobalValue::WeakAnyLinkage, Init, |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6571 | "\01l_OBJC_PROTOCOL_$_" + PD->getObjCRuntimeNameAsString()); |
Fariborz Jahanian | 09796d6 | 2009-01-31 02:43:27 +0000 | [diff] [blame] | 6572 | Entry->setAlignment( |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 6573 | CGM.getDataLayout().getABITypeAlignment(ObjCTypes.ProtocolnfABITy)); |
John McCall | 50651b9 | 2012-03-30 21:29:05 +0000 | [diff] [blame] | 6574 | |
| 6575 | Protocols[PD->getIdentifier()] = Entry; |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6576 | } |
Fariborz Jahanian | 8448c2c | 2009-01-29 20:10:59 +0000 | [diff] [blame] | 6577 | Entry->setVisibility(llvm::GlobalValue::HiddenVisibility); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6578 | CGM.addCompilerUsedGlobal(Entry); |
Chris Lattner | ad64e02 | 2009-07-17 23:57:13 +0000 | [diff] [blame] | 6579 | |
Fariborz Jahanian | 8448c2c | 2009-01-29 20:10:59 +0000 | [diff] [blame] | 6580 | // Use this protocol meta-data to build protocol list table in section |
| 6581 | // __DATA, __objc_protolist |
Daniel Dunbar | 9c29bf5 | 2009-10-18 20:48:59 +0000 | [diff] [blame] | 6582 | llvm::GlobalVariable *PTGV = |
| 6583 | new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.ProtocolnfABIPtrTy, |
| 6584 | false, llvm::GlobalValue::WeakAnyLinkage, Entry, |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6585 | "\01l_OBJC_LABEL_PROTOCOL_$_" + PD->getObjCRuntimeNameAsString()); |
Fariborz Jahanian | 09796d6 | 2009-01-31 02:43:27 +0000 | [diff] [blame] | 6586 | PTGV->setAlignment( |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 6587 | CGM.getDataLayout().getABITypeAlignment(ObjCTypes.ProtocolnfABIPtrTy)); |
Daniel Dunbar | 0bf2199 | 2009-04-15 02:56:18 +0000 | [diff] [blame] | 6588 | PTGV->setSection("__DATA, __objc_protolist, coalesced, no_dead_strip"); |
Fariborz Jahanian | 8448c2c | 2009-01-29 20:10:59 +0000 | [diff] [blame] | 6589 | PTGV->setVisibility(llvm::GlobalValue::HiddenVisibility); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6590 | CGM.addCompilerUsedGlobal(PTGV); |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6591 | return Entry; |
| 6592 | } |
| 6593 | |
| 6594 | /// EmitProtocolList - Generate protocol list meta-data: |
| 6595 | /// @code |
| 6596 | /// struct _protocol_list_t { |
| 6597 | /// long protocol_count; // Note, this is 32/64 bit |
| 6598 | /// struct _protocol_t[protocol_count]; |
| 6599 | /// } |
| 6600 | /// @endcode |
| 6601 | /// |
| 6602 | llvm::Constant * |
Chris Lattner | 5f9e272 | 2011-07-23 10:55:15 +0000 | [diff] [blame] | 6603 | CGObjCNonFragileABIMac::EmitProtocolList(Twine Name, |
Daniel Dunbar | 9c29bf5 | 2009-10-18 20:48:59 +0000 | [diff] [blame] | 6604 | ObjCProtocolDecl::protocol_iterator begin, |
| 6605 | ObjCProtocolDecl::protocol_iterator end) { |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 6606 | SmallVector<llvm::Constant *, 16> ProtocolRefs; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6607 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6608 | // Just return null for empty protocol lists |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6609 | if (begin == end) |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 6610 | return llvm::Constant::getNullValue(ObjCTypes.ProtocolListnfABIPtrTy); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6611 | |
Daniel Dunbar | 948e258 | 2009-02-15 07:36:20 +0000 | [diff] [blame] | 6612 | // FIXME: We shouldn't need to do this lookup here, should we? |
Dylan Noblesmith | f7ccbad | 2012-02-05 02:13:05 +0000 | [diff] [blame] | 6613 | SmallString<256> TmpName; |
Daniel Dunbar | 9c29bf5 | 2009-10-18 20:48:59 +0000 | [diff] [blame] | 6614 | Name.toVector(TmpName); |
| 6615 | llvm::GlobalVariable *GV = |
| 6616 | CGM.getModule().getGlobalVariable(TmpName.str(), true); |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6617 | if (GV) |
Daniel Dunbar | 9c29bf5 | 2009-10-18 20:48:59 +0000 | [diff] [blame] | 6618 | return llvm::ConstantExpr::getBitCast(GV, ObjCTypes.ProtocolListnfABIPtrTy); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6619 | |
Daniel Dunbar | 948e258 | 2009-02-15 07:36:20 +0000 | [diff] [blame] | 6620 | for (; begin != end; ++begin) |
| 6621 | ProtocolRefs.push_back(GetProtocolRef(*begin)); // Implemented??? |
| 6622 | |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6623 | // This list is null terminated. |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 6624 | ProtocolRefs.push_back(llvm::Constant::getNullValue( |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6625 | ObjCTypes.ProtocolnfABIPtrTy)); |
| 6626 | |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 6627 | llvm::Constant *Values[2]; |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 6628 | Values[0] = |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 6629 | llvm::ConstantInt::get(ObjCTypes.LongTy, ProtocolRefs.size() - 1); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6630 | Values[1] = |
Bill Wendling | 3964e62 | 2012-02-09 22:16:49 +0000 | [diff] [blame] | 6631 | llvm::ConstantArray::get(llvm::ArrayType::get(ObjCTypes.ProtocolnfABIPtrTy, |
| 6632 | ProtocolRefs.size()), |
| 6633 | ProtocolRefs); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6634 | |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 6635 | llvm::Constant *Init = llvm::ConstantStruct::getAnon(Values); |
Owen Anderson | 1c431b3 | 2009-07-08 19:05:04 +0000 | [diff] [blame] | 6636 | GV = new llvm::GlobalVariable(CGM.getModule(), Init->getType(), false, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6637 | llvm::GlobalValue::PrivateLinkage, |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 6638 | Init, Name); |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6639 | GV->setSection("__DATA, __objc_const"); |
Fariborz Jahanian | 09796d6 | 2009-01-31 02:43:27 +0000 | [diff] [blame] | 6640 | GV->setAlignment( |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 6641 | CGM.getDataLayout().getABITypeAlignment(Init->getType())); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6642 | CGM.addCompilerUsedGlobal(GV); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6643 | return llvm::ConstantExpr::getBitCast(GV, |
Daniel Dunbar | 948e258 | 2009-02-15 07:36:20 +0000 | [diff] [blame] | 6644 | ObjCTypes.ProtocolListnfABIPtrTy); |
Fariborz Jahanian | da32009 | 2009-01-29 19:24:30 +0000 | [diff] [blame] | 6645 | } |
| 6646 | |
Fariborz Jahanian | 3819a0b | 2009-01-30 00:46:37 +0000 | [diff] [blame] | 6647 | /// GetMethodDescriptionConstant - This routine build following meta-data: |
| 6648 | /// struct _objc_method { |
| 6649 | /// SEL _cmd; |
| 6650 | /// char *method_type; |
| 6651 | /// char *_imp; |
| 6652 | /// } |
| 6653 | |
| 6654 | llvm::Constant * |
| 6655 | CGObjCNonFragileABIMac::GetMethodDescriptionConstant(const ObjCMethodDecl *MD) { |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 6656 | llvm::Constant *Desc[3]; |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 6657 | Desc[0] = |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6658 | llvm::ConstantExpr::getBitCast(GetMethodVarName(MD->getSelector()), |
| 6659 | ObjCTypes.SelectorPtrTy); |
Fariborz Jahanian | 3819a0b | 2009-01-30 00:46:37 +0000 | [diff] [blame] | 6660 | Desc[1] = GetMethodVarType(MD); |
Douglas Gregor | f968d83 | 2011-05-27 01:19:52 +0000 | [diff] [blame] | 6661 | if (!Desc[1]) |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 6662 | return nullptr; |
| 6663 | |
Fariborz Jahanian | 8cfd397 | 2009-01-30 18:58:59 +0000 | [diff] [blame] | 6664 | // Protocol methods have no implementation. So, this entry is always NULL. |
Owen Anderson | c9c88b4 | 2009-07-31 20:28:54 +0000 | [diff] [blame] | 6665 | Desc[2] = llvm::Constant::getNullValue(ObjCTypes.Int8PtrTy); |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 6666 | return llvm::ConstantStruct::get(ObjCTypes.MethodTy, Desc); |
Fariborz Jahanian | 3819a0b | 2009-01-30 00:46:37 +0000 | [diff] [blame] | 6667 | } |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 6668 | |
| 6669 | /// EmitObjCValueForIvar - Code Gen for nonfragile ivar reference. |
| 6670 | /// This code gen. amounts to generating code for: |
| 6671 | /// @code |
| 6672 | /// (type *)((char *)base + _OBJC_IVAR_$_.ivar; |
| 6673 | /// @encode |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6674 | /// |
Fariborz Jahanian | 598d3f6 | 2009-02-03 19:03:09 +0000 | [diff] [blame] | 6675 | LValue CGObjCNonFragileABIMac::EmitObjCValueForIvar( |
John McCall | 506b57e | 2010-05-17 21:00:27 +0000 | [diff] [blame] | 6676 | CodeGen::CodeGenFunction &CGF, |
| 6677 | QualType ObjectTy, |
| 6678 | llvm::Value *BaseValue, |
| 6679 | const ObjCIvarDecl *Ivar, |
| 6680 | unsigned CVRQualifiers) { |
| 6681 | ObjCInterfaceDecl *ID = ObjectTy->getAs<ObjCObjectType>()->getInterface(); |
Fariborz Jahanian | cd285d0 | 2012-02-20 22:42:22 +0000 | [diff] [blame] | 6682 | llvm::Value *Offset = EmitIvarOffset(CGF, ID, Ivar); |
Daniel Dunbar | 9777687 | 2009-04-22 07:32:20 +0000 | [diff] [blame] | 6683 | return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, |
Fariborz Jahanian | cd285d0 | 2012-02-20 22:42:22 +0000 | [diff] [blame] | 6684 | Offset); |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 6685 | } |
| 6686 | |
Fariborz Jahanian | f63aa3f | 2009-02-10 19:02:04 +0000 | [diff] [blame] | 6687 | llvm::Value *CGObjCNonFragileABIMac::EmitIvarOffset( |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6688 | CodeGen::CodeGenFunction &CGF, |
| 6689 | const ObjCInterfaceDecl *Interface, |
| 6690 | const ObjCIvarDecl *Ivar) { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6691 | llvm::Value *IvarOffsetValue = ObjCIvarOffsetVariable(Interface, Ivar); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6692 | IvarOffsetValue = CGF.Builder.CreateAlignedLoad(IvarOffsetValue, |
| 6693 | CGF.getSizeAlign(), "ivar"); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6694 | if (IsIvarOffsetKnownIdempotent(CGF, Ivar)) |
| 6695 | cast<llvm::LoadInst>(IvarOffsetValue) |
| 6696 | ->setMetadata(CGM.getModule().getMDKindID("invariant.load"), |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6697 | llvm::MDNode::get(VMContext, None)); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6698 | |
| 6699 | // This could be 32bit int or 64bit integer depending on the architecture. |
| 6700 | // Cast it to 64bit integer value, if it is a 32bit integer ivar offset value |
| 6701 | // as this is what caller always expectes. |
| 6702 | if (ObjCTypes.IvarOffsetVarTy == ObjCTypes.IntTy) |
| 6703 | IvarOffsetValue = CGF.Builder.CreateIntCast( |
| 6704 | IvarOffsetValue, ObjCTypes.LongTy, true, "ivar.conv"); |
| 6705 | return IvarOffsetValue; |
Fariborz Jahanian | f63aa3f | 2009-02-10 19:02:04 +0000 | [diff] [blame] | 6706 | } |
| 6707 | |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6708 | static void appendSelectorForMessageRefTable(std::string &buffer, |
| 6709 | Selector selector) { |
| 6710 | if (selector.isUnarySelector()) { |
| 6711 | buffer += selector.getNameForSlot(0); |
| 6712 | return; |
| 6713 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6714 | |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6715 | for (unsigned i = 0, e = selector.getNumArgs(); i != e; ++i) { |
| 6716 | buffer += selector.getNameForSlot(i); |
| 6717 | buffer += '_'; |
| 6718 | } |
| 6719 | } |
| 6720 | |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6721 | /// Emit a "vtable" message send. We emit a weak hidden-visibility |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 6722 | /// struct, initially containing the selector pointer and a pointer to |
| 6723 | /// a "fixup" variant of the appropriate objc_msgSend. To call, we |
| 6724 | /// load and call the function pointer, passing the address of the |
| 6725 | /// struct as the second parameter. The runtime determines whether |
| 6726 | /// the selector is currently emitted using vtable dispatch; if so, it |
| 6727 | /// substitutes a stub function which simply tail-calls through the |
| 6728 | /// appropriate vtable slot, and if not, it substitues a stub function |
| 6729 | /// which tail-calls objc_msgSend. Both stubs adjust the selector |
| 6730 | /// argument to correctly point to the selector. |
| 6731 | RValue |
| 6732 | CGObjCNonFragileABIMac::EmitVTableMessageSend(CodeGenFunction &CGF, |
| 6733 | ReturnValueSlot returnSlot, |
| 6734 | QualType resultType, |
| 6735 | Selector selector, |
| 6736 | llvm::Value *arg0, |
| 6737 | QualType arg0Type, |
| 6738 | bool isSuper, |
| 6739 | const CallArgList &formalArgs, |
| 6740 | const ObjCMethodDecl *method) { |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6741 | // Compute the actual arguments. |
| 6742 | CallArgList args; |
| 6743 | |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 6744 | // First argument: the receiver / super-call structure. |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6745 | if (!isSuper) |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 6746 | arg0 = CGF.Builder.CreateBitCast(arg0, ObjCTypes.ObjectPtrTy); |
| 6747 | args.add(RValue::get(arg0), arg0Type); |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6748 | |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 6749 | // Second argument: a pointer to the message ref structure. Leave |
| 6750 | // the actual argument value blank for now. |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 6751 | args.add(RValue::get(nullptr), ObjCTypes.MessageRefCPtrTy); |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6752 | |
| 6753 | args.insert(args.end(), formalArgs.begin(), formalArgs.end()); |
| 6754 | |
John McCall | de5d3c7 | 2012-02-17 03:33:10 +0000 | [diff] [blame] | 6755 | MessageSendInfo MSI = getMessageSendInfo(method, resultType, args); |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6756 | |
John McCall | cba681a | 2011-05-14 21:12:11 +0000 | [diff] [blame] | 6757 | NullReturnState nullReturn; |
| 6758 | |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 6759 | // Find the function to call and the mangled name for the message |
| 6760 | // ref structure. Using a different mangled name wouldn't actually |
| 6761 | // be a problem; it would just be a waste. |
| 6762 | // |
| 6763 | // The runtime currently never uses vtable dispatch for anything |
| 6764 | // except normal, non-super message-sends. |
| 6765 | // FIXME: don't use this for that. |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 6766 | llvm::Constant *fn = nullptr; |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6767 | std::string messageRefName("\01l_"); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6768 | if (CGM.ReturnSlotInterferesWithArgs(MSI.CallInfo)) { |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6769 | if (isSuper) { |
| 6770 | fn = ObjCTypes.getMessageSendSuper2StretFixupFn(); |
| 6771 | messageRefName += "objc_msgSendSuper2_stret_fixup"; |
Chris Lattner | 9b7d670 | 2010-08-18 16:09:06 +0000 | [diff] [blame] | 6772 | } else { |
John McCall | cba681a | 2011-05-14 21:12:11 +0000 | [diff] [blame] | 6773 | nullReturn.init(CGF, arg0); |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6774 | fn = ObjCTypes.getMessageSendStretFixupFn(); |
| 6775 | messageRefName += "objc_msgSend_stret_fixup"; |
Chris Lattner | 9b7d670 | 2010-08-18 16:09:06 +0000 | [diff] [blame] | 6776 | } |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6777 | } else if (!isSuper && CGM.ReturnTypeUsesFPRet(resultType)) { |
| 6778 | fn = ObjCTypes.getMessageSendFpretFixupFn(); |
| 6779 | messageRefName += "objc_msgSend_fpret_fixup"; |
Mike Stump | b3589f4 | 2009-07-30 22:28:39 +0000 | [diff] [blame] | 6780 | } else { |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6781 | if (isSuper) { |
| 6782 | fn = ObjCTypes.getMessageSendSuper2FixupFn(); |
| 6783 | messageRefName += "objc_msgSendSuper2_fixup"; |
Chris Lattner | 9b7d670 | 2010-08-18 16:09:06 +0000 | [diff] [blame] | 6784 | } else { |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6785 | fn = ObjCTypes.getMessageSendFixupFn(); |
| 6786 | messageRefName += "objc_msgSend_fixup"; |
Chris Lattner | 9b7d670 | 2010-08-18 16:09:06 +0000 | [diff] [blame] | 6787 | } |
Fariborz Jahanian | 83a8a75 | 2009-02-04 20:42:28 +0000 | [diff] [blame] | 6788 | } |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6789 | assert(fn && "CGObjCNonFragileABIMac::EmitMessageSend"); |
| 6790 | messageRefName += '_'; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6791 | |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6792 | // Append the selector name, except use underscores anywhere we |
| 6793 | // would have used colons. |
| 6794 | appendSelectorForMessageRefTable(messageRefName, selector); |
| 6795 | |
| 6796 | llvm::GlobalVariable *messageRef |
| 6797 | = CGM.getModule().getGlobalVariable(messageRefName); |
| 6798 | if (!messageRef) { |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 6799 | // Build the message ref structure. |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6800 | llvm::Constant *values[] = { fn, GetMethodVarName(selector) }; |
Chris Lattner | c5cbb90 | 2011-06-20 04:01:35 +0000 | [diff] [blame] | 6801 | llvm::Constant *init = llvm::ConstantStruct::getAnon(values); |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6802 | messageRef = new llvm::GlobalVariable(CGM.getModule(), |
| 6803 | init->getType(), |
| 6804 | /*constant*/ false, |
| 6805 | llvm::GlobalValue::WeakAnyLinkage, |
| 6806 | init, |
| 6807 | messageRefName); |
| 6808 | messageRef->setVisibility(llvm::GlobalValue::HiddenVisibility); |
| 6809 | messageRef->setAlignment(16); |
| 6810 | messageRef->setSection("__DATA, __objc_msgrefs, coalesced"); |
| 6811 | } |
Fariborz Jahanian | 3c52d36 | 2012-01-30 23:39:30 +0000 | [diff] [blame] | 6812 | |
| 6813 | bool requiresnullCheck = false; |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 6814 | if (CGM.getLangOpts().ObjCAutoRefCount && method) |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6815 | for (const auto *ParamDecl : method->parameters()) { |
Fariborz Jahanian | 3c52d36 | 2012-01-30 23:39:30 +0000 | [diff] [blame] | 6816 | if (ParamDecl->hasAttr<NSConsumedAttr>()) { |
| 6817 | if (!nullReturn.NullBB) |
| 6818 | nullReturn.init(CGF, arg0); |
| 6819 | requiresnullCheck = true; |
| 6820 | break; |
| 6821 | } |
| 6822 | } |
| 6823 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6824 | Address mref = |
| 6825 | Address(CGF.Builder.CreateBitCast(messageRef, ObjCTypes.MessageRefPtrTy), |
| 6826 | CGF.getPointerAlign()); |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6827 | |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 6828 | // Update the message ref argument. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6829 | args[1].RV = RValue::get(mref.getPointer()); |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6830 | |
| 6831 | // Load the function to call from the message ref table. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6832 | Address calleeAddr = |
| 6833 | CGF.Builder.CreateStructGEP(mref, 0, CharUnits::Zero()); |
| 6834 | llvm::Value *callee = CGF.Builder.CreateLoad(calleeAddr, "msgSend_fn"); |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6835 | |
John McCall | de5d3c7 | 2012-02-17 03:33:10 +0000 | [diff] [blame] | 6836 | callee = CGF.Builder.CreateBitCast(callee, MSI.MessengerType); |
John McCall | b1e8144 | 2011-05-13 23:16:18 +0000 | [diff] [blame] | 6837 | |
John McCall | de5d3c7 | 2012-02-17 03:33:10 +0000 | [diff] [blame] | 6838 | RValue result = CGF.EmitCall(MSI.CallInfo, callee, returnSlot, args); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 6839 | return nullReturn.complete(CGF, result, resultType, formalArgs, |
| 6840 | requiresnullCheck ? method : nullptr); |
Fariborz Jahanian | 4655112 | 2009-02-04 00:22:57 +0000 | [diff] [blame] | 6841 | } |
| 6842 | |
| 6843 | /// Generate code for a message send expression in the nonfragile abi. |
Daniel Dunbar | d6c93d7 | 2009-09-17 04:01:22 +0000 | [diff] [blame] | 6844 | CodeGen::RValue |
| 6845 | CGObjCNonFragileABIMac::GenerateMessageSend(CodeGen::CodeGenFunction &CGF, |
John McCall | ef072fd | 2010-05-22 01:48:05 +0000 | [diff] [blame] | 6846 | ReturnValueSlot Return, |
Daniel Dunbar | d6c93d7 | 2009-09-17 04:01:22 +0000 | [diff] [blame] | 6847 | QualType ResultType, |
| 6848 | Selector Sel, |
| 6849 | llvm::Value *Receiver, |
Daniel Dunbar | d6c93d7 | 2009-09-17 04:01:22 +0000 | [diff] [blame] | 6850 | const CallArgList &CallArgs, |
David Chisnall | c6cd5fd | 2010-04-28 19:33:36 +0000 | [diff] [blame] | 6851 | const ObjCInterfaceDecl *Class, |
Daniel Dunbar | d6c93d7 | 2009-09-17 04:01:22 +0000 | [diff] [blame] | 6852 | const ObjCMethodDecl *Method) { |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 6853 | return isVTableDispatchedSelector(Sel) |
| 6854 | ? EmitVTableMessageSend(CGF, Return, ResultType, Sel, |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6855 | Receiver, CGF.getContext().getObjCIdType(), |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 6856 | false, CallArgs, Method) |
| 6857 | : EmitMessageSend(CGF, Return, ResultType, |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 6858 | EmitSelector(CGF, Sel), |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6859 | Receiver, CGF.getContext().getObjCIdType(), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6860 | false, CallArgs, Method, Class, ObjCTypes); |
Fariborz Jahanian | 4655112 | 2009-02-04 00:22:57 +0000 | [diff] [blame] | 6861 | } |
| 6862 | |
Daniel Dunbar | 5a7379a | 2009-03-01 04:40:10 +0000 | [diff] [blame] | 6863 | llvm::GlobalVariable * |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6864 | CGObjCNonFragileABIMac::GetClassGlobal(StringRef Name, bool Weak) { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6865 | llvm::GlobalValue::LinkageTypes L = |
| 6866 | Weak ? llvm::GlobalValue::ExternalWeakLinkage |
| 6867 | : llvm::GlobalValue::ExternalLinkage; |
| 6868 | |
Daniel Dunbar | 5a7379a | 2009-03-01 04:40:10 +0000 | [diff] [blame] | 6869 | llvm::GlobalVariable *GV = CGM.getModule().getGlobalVariable(Name); |
| 6870 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6871 | if (!GV) |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6872 | GV = new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.ClassnfABITy, |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 6873 | false, L, nullptr, Name); |
Daniel Dunbar | 5a7379a | 2009-03-01 04:40:10 +0000 | [diff] [blame] | 6874 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6875 | assert(GV->getLinkage() == L); |
Daniel Dunbar | 5a7379a | 2009-03-01 04:40:10 +0000 | [diff] [blame] | 6876 | return GV; |
| 6877 | } |
| 6878 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 6879 | llvm::Value *CGObjCNonFragileABIMac::EmitClassRefFromId(CodeGenFunction &CGF, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6880 | IdentifierInfo *II, |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6881 | bool Weak, |
| 6882 | const ObjCInterfaceDecl *ID) { |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6883 | CharUnits Align = CGF.getPointerAlign(); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 6884 | llvm::GlobalVariable *&Entry = ClassReferences[II]; |
| 6885 | |
Fariborz Jahanian | 0e81f4b | 2009-02-05 20:41:40 +0000 | [diff] [blame] | 6886 | if (!Entry) { |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6887 | StringRef Name = ID ? ID->getObjCRuntimeNameAsString() : II->getName(); |
| 6888 | std::string ClassName = (getClassSymbolPrefix() + Name).str(); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6889 | llvm::GlobalVariable *ClassGV = GetClassGlobal(ClassName, Weak); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6890 | Entry = new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.ClassnfABIPtrTy, |
| 6891 | false, llvm::GlobalValue::PrivateLinkage, |
| 6892 | ClassGV, "OBJC_CLASSLIST_REFERENCES_$_"); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6893 | Entry->setAlignment(Align.getQuantity()); |
Daniel Dunbar | 1139452 | 2009-04-18 08:51:00 +0000 | [diff] [blame] | 6894 | Entry->setSection("__DATA, __objc_classrefs, regular, no_dead_strip"); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6895 | CGM.addCompilerUsedGlobal(Entry); |
Daniel Dunbar | 1139452 | 2009-04-18 08:51:00 +0000 | [diff] [blame] | 6896 | } |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6897 | return CGF.Builder.CreateAlignedLoad(Entry, Align); |
Daniel Dunbar | 1139452 | 2009-04-18 08:51:00 +0000 | [diff] [blame] | 6898 | } |
Fariborz Jahanian | 0e81f4b | 2009-02-05 20:41:40 +0000 | [diff] [blame] | 6899 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 6900 | llvm::Value *CGObjCNonFragileABIMac::EmitClassRef(CodeGenFunction &CGF, |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 6901 | const ObjCInterfaceDecl *ID) { |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame^] | 6902 | // If the class has the objc_runtime_visible attribute, we need to |
| 6903 | // use the Objective-C runtime to get the class. |
| 6904 | if (ID->hasAttr<ObjCRuntimeVisibleAttr>()) |
| 6905 | return EmitClassRefViaRuntime(CGF, ID, ObjCTypes); |
| 6906 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6907 | return EmitClassRefFromId(CGF, ID->getIdentifier(), ID->isWeakImported(), ID); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 6908 | } |
| 6909 | |
| 6910 | llvm::Value *CGObjCNonFragileABIMac::EmitNSAutoreleasePoolClassRef( |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 6911 | CodeGenFunction &CGF) { |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 6912 | IdentifierInfo *II = &CGM.getContext().Idents.get("NSAutoreleasePool"); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6913 | return EmitClassRefFromId(CGF, II, false, nullptr); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 6914 | } |
| 6915 | |
Daniel Dunbar | 1139452 | 2009-04-18 08:51:00 +0000 | [diff] [blame] | 6916 | llvm::Value * |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 6917 | CGObjCNonFragileABIMac::EmitSuperClassRef(CodeGenFunction &CGF, |
Daniel Dunbar | 1139452 | 2009-04-18 08:51:00 +0000 | [diff] [blame] | 6918 | const ObjCInterfaceDecl *ID) { |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6919 | CharUnits Align = CGF.getPointerAlign(); |
Daniel Dunbar | 1139452 | 2009-04-18 08:51:00 +0000 | [diff] [blame] | 6920 | llvm::GlobalVariable *&Entry = SuperClassReferences[ID->getIdentifier()]; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6921 | |
Daniel Dunbar | 1139452 | 2009-04-18 08:51:00 +0000 | [diff] [blame] | 6922 | if (!Entry) { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6923 | llvm::SmallString<64> ClassName(getClassSymbolPrefix()); |
| 6924 | ClassName += ID->getObjCRuntimeNameAsString(); |
| 6925 | llvm::GlobalVariable *ClassGV = GetClassGlobal(ClassName.str(), |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6926 | ID->isWeakImported()); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6927 | Entry = new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.ClassnfABIPtrTy, |
| 6928 | false, llvm::GlobalValue::PrivateLinkage, |
| 6929 | ClassGV, "OBJC_CLASSLIST_SUP_REFS_$_"); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6930 | Entry->setAlignment(Align.getQuantity()); |
Daniel Dunbar | 1139452 | 2009-04-18 08:51:00 +0000 | [diff] [blame] | 6931 | Entry->setSection("__DATA, __objc_superrefs, regular, no_dead_strip"); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6932 | CGM.addCompilerUsedGlobal(Entry); |
Fariborz Jahanian | 0e81f4b | 2009-02-05 20:41:40 +0000 | [diff] [blame] | 6933 | } |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6934 | return CGF.Builder.CreateAlignedLoad(Entry, Align); |
Fariborz Jahanian | 0e81f4b | 2009-02-05 20:41:40 +0000 | [diff] [blame] | 6935 | } |
| 6936 | |
Fariborz Jahanian | 7a06aae | 2009-02-06 20:09:23 +0000 | [diff] [blame] | 6937 | /// EmitMetaClassRef - Return a Value * of the address of _class_t |
| 6938 | /// meta-data |
| 6939 | /// |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 6940 | llvm::Value *CGObjCNonFragileABIMac::EmitMetaClassRef(CodeGenFunction &CGF, |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 6941 | const ObjCInterfaceDecl *ID, |
| 6942 | bool Weak) { |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6943 | CharUnits Align = CGF.getPointerAlign(); |
Fariborz Jahanian | 7a06aae | 2009-02-06 20:09:23 +0000 | [diff] [blame] | 6944 | llvm::GlobalVariable * &Entry = MetaClassReferences[ID->getIdentifier()]; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6945 | if (!Entry) { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6946 | llvm::SmallString<64> MetaClassName(getMetaclassSymbolPrefix()); |
| 6947 | MetaClassName += ID->getObjCRuntimeNameAsString(); |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 6948 | llvm::GlobalVariable *MetaClassGV = |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6949 | GetClassGlobal(MetaClassName.str(), Weak); |
| 6950 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6951 | Entry = new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.ClassnfABIPtrTy, |
| 6952 | false, llvm::GlobalValue::PrivateLinkage, |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6953 | MetaClassGV, "OBJC_CLASSLIST_SUP_REFS_$_"); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6954 | Entry->setAlignment(Align.getQuantity()); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6955 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6956 | Entry->setSection("__DATA, __objc_superrefs, regular, no_dead_strip"); |
| 6957 | CGM.addCompilerUsedGlobal(Entry); |
| 6958 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6959 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6960 | return CGF.Builder.CreateAlignedLoad(Entry, Align); |
Fariborz Jahanian | 7a06aae | 2009-02-06 20:09:23 +0000 | [diff] [blame] | 6961 | } |
| 6962 | |
Fariborz Jahanian | 0e81f4b | 2009-02-05 20:41:40 +0000 | [diff] [blame] | 6963 | /// GetClass - Return a reference to the class for the given interface |
| 6964 | /// decl. |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 6965 | llvm::Value *CGObjCNonFragileABIMac::GetClass(CodeGenFunction &CGF, |
Fariborz Jahanian | 0e81f4b | 2009-02-05 20:41:40 +0000 | [diff] [blame] | 6966 | const ObjCInterfaceDecl *ID) { |
Douglas Gregor | 0a0d2b1 | 2011-03-23 00:50:03 +0000 | [diff] [blame] | 6967 | if (ID->isWeakImported()) { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 6968 | llvm::SmallString<64> ClassName(getClassSymbolPrefix()); |
| 6969 | ClassName += ID->getObjCRuntimeNameAsString(); |
| 6970 | llvm::GlobalVariable *ClassGV = GetClassGlobal(ClassName.str(), true); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 6971 | (void)ClassGV; |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 6972 | assert(ClassGV->hasExternalWeakLinkage()); |
Fariborz Jahanian | 269f8bc | 2009-11-17 22:42:00 +0000 | [diff] [blame] | 6973 | } |
| 6974 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 6975 | return EmitClassRef(CGF, ID); |
Fariborz Jahanian | 0e81f4b | 2009-02-05 20:41:40 +0000 | [diff] [blame] | 6976 | } |
| 6977 | |
Fariborz Jahanian | 7a06aae | 2009-02-06 20:09:23 +0000 | [diff] [blame] | 6978 | /// Generates a message send where the super is the receiver. This is |
| 6979 | /// a message send to self with special delivery semantics indicating |
| 6980 | /// which class's method should be called. |
| 6981 | CodeGen::RValue |
| 6982 | CGObjCNonFragileABIMac::GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, |
John McCall | ef072fd | 2010-05-22 01:48:05 +0000 | [diff] [blame] | 6983 | ReturnValueSlot Return, |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6984 | QualType ResultType, |
| 6985 | Selector Sel, |
| 6986 | const ObjCInterfaceDecl *Class, |
| 6987 | bool isCategoryImpl, |
| 6988 | llvm::Value *Receiver, |
| 6989 | bool IsClassMessage, |
Daniel Dunbar | d6c93d7 | 2009-09-17 04:01:22 +0000 | [diff] [blame] | 6990 | const CodeGen::CallArgList &CallArgs, |
| 6991 | const ObjCMethodDecl *Method) { |
Fariborz Jahanian | 7a06aae | 2009-02-06 20:09:23 +0000 | [diff] [blame] | 6992 | // ... |
| 6993 | // Create and init a super structure; this is a (receiver, class) |
| 6994 | // pair we will pass to objc_msgSendSuper. |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 6995 | Address ObjCSuper = |
| 6996 | CGF.CreateTempAlloca(ObjCTypes.SuperTy, CGF.getPointerAlign(), |
| 6997 | "objc_super"); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 6998 | |
Fariborz Jahanian | 7a06aae | 2009-02-06 20:09:23 +0000 | [diff] [blame] | 6999 | llvm::Value *ReceiverAsObject = |
| 7000 | CGF.Builder.CreateBitCast(Receiver, ObjCTypes.ObjectPtrTy); |
Pirama Arumuga Nainar | 58878f8 | 2015-05-06 11:48:57 -0700 | [diff] [blame] | 7001 | CGF.Builder.CreateStore( |
| 7002 | ReceiverAsObject, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7003 | CGF.Builder.CreateStructGEP(ObjCSuper, 0, CharUnits::Zero())); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7004 | |
Fariborz Jahanian | 7a06aae | 2009-02-06 20:09:23 +0000 | [diff] [blame] | 7005 | // If this is a class message the metaclass is passed as the target. |
Fariborz Jahanian | 7ce7792 | 2009-02-28 20:07:56 +0000 | [diff] [blame] | 7006 | llvm::Value *Target; |
Fariborz Jahanian | b9966bd | 2012-10-10 23:11:18 +0000 | [diff] [blame] | 7007 | if (IsClassMessage) |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 7008 | Target = EmitMetaClassRef(CGF, Class, Class->isWeakImported()); |
Fariborz Jahanian | b9966bd | 2012-10-10 23:11:18 +0000 | [diff] [blame] | 7009 | else |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 7010 | Target = EmitSuperClassRef(CGF, Class); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7011 | |
Mike Stump | f5408fe | 2009-05-16 07:57:57 +0000 | [diff] [blame] | 7012 | // FIXME: We shouldn't need to do this cast, rectify the ASTContext and |
| 7013 | // ObjCTypes types. |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 7014 | llvm::Type *ClassTy = |
Fariborz Jahanian | 7a06aae | 2009-02-06 20:09:23 +0000 | [diff] [blame] | 7015 | CGM.getTypes().ConvertType(CGF.getContext().getObjCClassType()); |
| 7016 | Target = CGF.Builder.CreateBitCast(Target, ClassTy); |
Pirama Arumuga Nainar | 58878f8 | 2015-05-06 11:48:57 -0700 | [diff] [blame] | 7017 | CGF.Builder.CreateStore( |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7018 | Target, CGF.Builder.CreateStructGEP(ObjCSuper, 1, CGF.getPointerSize())); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7019 | |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 7020 | return (isVTableDispatchedSelector(Sel)) |
| 7021 | ? EmitVTableMessageSend(CGF, Return, ResultType, Sel, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7022 | ObjCSuper.getPointer(), ObjCTypes.SuperPtrCTy, |
John McCall | 944c843 | 2011-05-14 03:10:52 +0000 | [diff] [blame] | 7023 | true, CallArgs, Method) |
| 7024 | : EmitMessageSend(CGF, Return, ResultType, |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 7025 | EmitSelector(CGF, Sel), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7026 | ObjCSuper.getPointer(), ObjCTypes.SuperPtrCTy, |
| 7027 | true, CallArgs, Method, Class, ObjCTypes); |
Fariborz Jahanian | 7a06aae | 2009-02-06 20:09:23 +0000 | [diff] [blame] | 7028 | } |
Fariborz Jahanian | 26cc89f | 2009-02-11 20:51:17 +0000 | [diff] [blame] | 7029 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 7030 | llvm::Value *CGObjCNonFragileABIMac::EmitSelector(CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7031 | Selector Sel) { |
| 7032 | Address Addr = EmitSelectorAddr(CGF, Sel); |
| 7033 | |
| 7034 | llvm::LoadInst* LI = CGF.Builder.CreateLoad(Addr); |
| 7035 | LI->setMetadata(CGM.getModule().getMDKindID("invariant.load"), |
| 7036 | llvm::MDNode::get(VMContext, None)); |
| 7037 | return LI; |
| 7038 | } |
| 7039 | |
| 7040 | Address CGObjCNonFragileABIMac::EmitSelectorAddr(CodeGenFunction &CGF, |
| 7041 | Selector Sel) { |
Fariborz Jahanian | 26cc89f | 2009-02-11 20:51:17 +0000 | [diff] [blame] | 7042 | llvm::GlobalVariable *&Entry = SelectorReferences[Sel]; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7043 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7044 | CharUnits Align = CGF.getPointerAlign(); |
Fariborz Jahanian | 26cc89f | 2009-02-11 20:51:17 +0000 | [diff] [blame] | 7045 | if (!Entry) { |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7046 | llvm::Constant *Casted = |
| 7047 | llvm::ConstantExpr::getBitCast(GetMethodVarName(Sel), |
| 7048 | ObjCTypes.SelectorPtrTy); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 7049 | Entry = new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.SelectorPtrTy, |
| 7050 | false, llvm::GlobalValue::PrivateLinkage, |
| 7051 | Casted, "OBJC_SELECTOR_REFERENCES_"); |
Michael Gottesman | 8f98bf9 | 2013-02-05 23:08:45 +0000 | [diff] [blame] | 7052 | Entry->setExternallyInitialized(true); |
Fariborz Jahanian | d0f8a8d | 2009-05-11 19:25:47 +0000 | [diff] [blame] | 7053 | Entry->setSection("__DATA, __objc_selrefs, literal_pointers, no_dead_strip"); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7054 | Entry->setAlignment(Align.getQuantity()); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 7055 | CGM.addCompilerUsedGlobal(Entry); |
Fariborz Jahanian | 26cc89f | 2009-02-11 20:51:17 +0000 | [diff] [blame] | 7056 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7057 | |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7058 | return Address(Entry, Align); |
Fariborz Jahanian | 26cc89f | 2009-02-11 20:51:17 +0000 | [diff] [blame] | 7059 | } |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7060 | |
Fariborz Jahanian | 6948aea | 2009-02-16 22:52:32 +0000 | [diff] [blame] | 7061 | /// EmitObjCIvarAssign - Code gen for assigning to a __strong object. |
Fariborz Jahanian | 6c7a1f3 | 2009-09-24 22:25:38 +0000 | [diff] [blame] | 7062 | /// objc_assign_ivar (id src, id *dst, ptrdiff_t) |
Fariborz Jahanian | 6948aea | 2009-02-16 22:52:32 +0000 | [diff] [blame] | 7063 | /// |
| 7064 | void CGObjCNonFragileABIMac::EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 7065 | llvm::Value *src, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7066 | Address dst, |
Fariborz Jahanian | 6c7a1f3 | 2009-09-24 22:25:38 +0000 | [diff] [blame] | 7067 | llvm::Value *ivarOffset) { |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 7068 | llvm::Type * SrcTy = src->getType(); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 7069 | if (!isa<llvm::PointerType>(SrcTy)) { |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 7070 | unsigned Size = CGM.getDataLayout().getTypeAllocSize(SrcTy); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 7071 | assert(Size <= 8 && "does not support size > 8"); |
| 7072 | src = (Size == 4 ? CGF.Builder.CreateBitCast(src, ObjCTypes.IntTy) |
| 7073 | : CGF.Builder.CreateBitCast(src, ObjCTypes.LongTy)); |
Fariborz Jahanian | 3b8a652 | 2009-03-13 00:42:52 +0000 | [diff] [blame] | 7074 | src = CGF.Builder.CreateIntToPtr(src, ObjCTypes.Int8PtrTy); |
| 7075 | } |
Fariborz Jahanian | 6948aea | 2009-02-16 22:52:32 +0000 | [diff] [blame] | 7076 | src = CGF.Builder.CreateBitCast(src, ObjCTypes.ObjectPtrTy); |
| 7077 | dst = CGF.Builder.CreateBitCast(dst, ObjCTypes.PtrObjectPtrTy); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7078 | llvm::Value *args[] = { src, dst.getPointer(), ivarOffset }; |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 7079 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getGcAssignIvarFn(), args); |
Fariborz Jahanian | 6948aea | 2009-02-16 22:52:32 +0000 | [diff] [blame] | 7080 | } |
| 7081 | |
| 7082 | /// EmitObjCStrongCastAssign - Code gen for assigning to a __strong cast object. |
| 7083 | /// objc_assign_strongCast (id src, id *dst) |
| 7084 | /// |
| 7085 | void CGObjCNonFragileABIMac::EmitObjCStrongCastAssign( |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7086 | CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7087 | llvm::Value *src, Address dst) { |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 7088 | llvm::Type * SrcTy = src->getType(); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 7089 | if (!isa<llvm::PointerType>(SrcTy)) { |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 7090 | unsigned Size = CGM.getDataLayout().getTypeAllocSize(SrcTy); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 7091 | assert(Size <= 8 && "does not support size > 8"); |
| 7092 | src = (Size == 4 ? CGF.Builder.CreateBitCast(src, ObjCTypes.IntTy) |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7093 | : CGF.Builder.CreateBitCast(src, ObjCTypes.LongTy)); |
Fariborz Jahanian | 3b8a652 | 2009-03-13 00:42:52 +0000 | [diff] [blame] | 7094 | src = CGF.Builder.CreateIntToPtr(src, ObjCTypes.Int8PtrTy); |
| 7095 | } |
Fariborz Jahanian | 6948aea | 2009-02-16 22:52:32 +0000 | [diff] [blame] | 7096 | src = CGF.Builder.CreateBitCast(src, ObjCTypes.ObjectPtrTy); |
| 7097 | dst = CGF.Builder.CreateBitCast(dst, ObjCTypes.PtrObjectPtrTy); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7098 | llvm::Value *args[] = { src, dst.getPointer() }; |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 7099 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getGcAssignStrongCastFn(), |
| 7100 | args, "weakassign"); |
Fariborz Jahanian | 6948aea | 2009-02-16 22:52:32 +0000 | [diff] [blame] | 7101 | } |
| 7102 | |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 7103 | void CGObjCNonFragileABIMac::EmitGCMemmoveCollectable( |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7104 | CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7105 | Address DestPtr, |
| 7106 | Address SrcPtr, |
Fariborz Jahanian | 55bcace | 2010-06-15 22:44:06 +0000 | [diff] [blame] | 7107 | llvm::Value *Size) { |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 7108 | SrcPtr = CGF.Builder.CreateBitCast(SrcPtr, ObjCTypes.Int8PtrTy); |
| 7109 | DestPtr = CGF.Builder.CreateBitCast(DestPtr, ObjCTypes.Int8PtrTy); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7110 | llvm::Value *args[] = { DestPtr.getPointer(), SrcPtr.getPointer(), Size }; |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 7111 | CGF.EmitNounwindRuntimeCall(ObjCTypes.GcMemmoveCollectableFn(), args); |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 7112 | } |
| 7113 | |
Fariborz Jahanian | 6948aea | 2009-02-16 22:52:32 +0000 | [diff] [blame] | 7114 | /// EmitObjCWeakRead - Code gen for loading value of a __weak |
| 7115 | /// object: objc_read_weak (id *src) |
| 7116 | /// |
| 7117 | llvm::Value * CGObjCNonFragileABIMac::EmitObjCWeakRead( |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7118 | CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7119 | Address AddrWeakObj) { |
| 7120 | llvm::Type *DestTy = AddrWeakObj.getElementType(); |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7121 | AddrWeakObj = CGF.Builder.CreateBitCast(AddrWeakObj, ObjCTypes.PtrObjectPtrTy); |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 7122 | llvm::Value *read_weak = |
| 7123 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getGcReadWeakFn(), |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7124 | AddrWeakObj.getPointer(), "weakread"); |
Eli Friedman | 8339b35 | 2009-03-07 03:57:15 +0000 | [diff] [blame] | 7125 | read_weak = CGF.Builder.CreateBitCast(read_weak, DestTy); |
Fariborz Jahanian | 6948aea | 2009-02-16 22:52:32 +0000 | [diff] [blame] | 7126 | return read_weak; |
| 7127 | } |
| 7128 | |
| 7129 | /// EmitObjCWeakAssign - Code gen for assigning to a __weak object. |
| 7130 | /// objc_assign_weak (id src, id *dst) |
| 7131 | /// |
| 7132 | void CGObjCNonFragileABIMac::EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7133 | llvm::Value *src, Address dst) { |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 7134 | llvm::Type * SrcTy = src->getType(); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 7135 | if (!isa<llvm::PointerType>(SrcTy)) { |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 7136 | unsigned Size = CGM.getDataLayout().getTypeAllocSize(SrcTy); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 7137 | assert(Size <= 8 && "does not support size > 8"); |
| 7138 | src = (Size == 4 ? CGF.Builder.CreateBitCast(src, ObjCTypes.IntTy) |
| 7139 | : CGF.Builder.CreateBitCast(src, ObjCTypes.LongTy)); |
Fariborz Jahanian | 3b8a652 | 2009-03-13 00:42:52 +0000 | [diff] [blame] | 7140 | src = CGF.Builder.CreateIntToPtr(src, ObjCTypes.Int8PtrTy); |
| 7141 | } |
Fariborz Jahanian | 6948aea | 2009-02-16 22:52:32 +0000 | [diff] [blame] | 7142 | src = CGF.Builder.CreateBitCast(src, ObjCTypes.ObjectPtrTy); |
| 7143 | dst = CGF.Builder.CreateBitCast(dst, ObjCTypes.PtrObjectPtrTy); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7144 | llvm::Value *args[] = { src, dst.getPointer() }; |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 7145 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getGcAssignWeakFn(), |
| 7146 | args, "weakassign"); |
Fariborz Jahanian | 6948aea | 2009-02-16 22:52:32 +0000 | [diff] [blame] | 7147 | } |
| 7148 | |
| 7149 | /// EmitObjCGlobalAssign - Code gen for assigning to a __strong object. |
| 7150 | /// objc_assign_global (id src, id *dst) |
| 7151 | /// |
| 7152 | void CGObjCNonFragileABIMac::EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7153 | llvm::Value *src, Address dst, |
Fariborz Jahanian | 021a7a6 | 2010-07-20 20:30:03 +0000 | [diff] [blame] | 7154 | bool threadlocal) { |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 7155 | llvm::Type * SrcTy = src->getType(); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 7156 | if (!isa<llvm::PointerType>(SrcTy)) { |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 7157 | unsigned Size = CGM.getDataLayout().getTypeAllocSize(SrcTy); |
Fariborz Jahanian | 0a855d0 | 2009-03-23 19:10:40 +0000 | [diff] [blame] | 7158 | assert(Size <= 8 && "does not support size > 8"); |
| 7159 | src = (Size == 4 ? CGF.Builder.CreateBitCast(src, ObjCTypes.IntTy) |
| 7160 | : CGF.Builder.CreateBitCast(src, ObjCTypes.LongTy)); |
Fariborz Jahanian | 3b8a652 | 2009-03-13 00:42:52 +0000 | [diff] [blame] | 7161 | src = CGF.Builder.CreateIntToPtr(src, ObjCTypes.Int8PtrTy); |
| 7162 | } |
Fariborz Jahanian | 6948aea | 2009-02-16 22:52:32 +0000 | [diff] [blame] | 7163 | src = CGF.Builder.CreateBitCast(src, ObjCTypes.ObjectPtrTy); |
| 7164 | dst = CGF.Builder.CreateBitCast(dst, ObjCTypes.PtrObjectPtrTy); |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7165 | llvm::Value *args[] = { src, dst.getPointer() }; |
Fariborz Jahanian | 021a7a6 | 2010-07-20 20:30:03 +0000 | [diff] [blame] | 7166 | if (!threadlocal) |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 7167 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getGcAssignGlobalFn(), |
| 7168 | args, "globalassign"); |
Fariborz Jahanian | 021a7a6 | 2010-07-20 20:30:03 +0000 | [diff] [blame] | 7169 | else |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 7170 | CGF.EmitNounwindRuntimeCall(ObjCTypes.getGcAssignThreadLocalFn(), |
| 7171 | args, "threadlocalassign"); |
Fariborz Jahanian | 6948aea | 2009-02-16 22:52:32 +0000 | [diff] [blame] | 7172 | } |
Fariborz Jahanian | 26cc89f | 2009-02-11 20:51:17 +0000 | [diff] [blame] | 7173 | |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7174 | void |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 7175 | CGObjCNonFragileABIMac::EmitSynchronizedStmt(CodeGen::CodeGenFunction &CGF, |
| 7176 | const ObjCAtSynchronizedStmt &S) { |
David Chisnall | 05dc91b | 2011-03-25 17:46:35 +0000 | [diff] [blame] | 7177 | EmitAtSynchronizedStmt(CGF, S, |
| 7178 | cast<llvm::Function>(ObjCTypes.getSyncEnterFn()), |
| 7179 | cast<llvm::Function>(ObjCTypes.getSyncExitFn())); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 7180 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7181 | |
John McCall | 5a18039 | 2010-07-24 00:37:23 +0000 | [diff] [blame] | 7182 | llvm::Constant * |
Fariborz Jahanian | cf5abc7 | 2011-06-23 19:00:08 +0000 | [diff] [blame] | 7183 | CGObjCNonFragileABIMac::GetEHType(QualType T) { |
John McCall | 5a18039 | 2010-07-24 00:37:23 +0000 | [diff] [blame] | 7184 | // There's a particular fixed type info for 'id'. |
| 7185 | if (T->isObjCIdType() || |
| 7186 | T->isObjCQualifiedIdType()) { |
| 7187 | llvm::Constant *IDEHType = |
| 7188 | CGM.getModule().getGlobalVariable("OBJC_EHTYPE_id"); |
| 7189 | if (!IDEHType) |
| 7190 | IDEHType = |
| 7191 | new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.EHTypeTy, |
| 7192 | false, |
| 7193 | llvm::GlobalValue::ExternalLinkage, |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 7194 | nullptr, "OBJC_EHTYPE_id"); |
John McCall | 5a18039 | 2010-07-24 00:37:23 +0000 | [diff] [blame] | 7195 | return IDEHType; |
| 7196 | } |
| 7197 | |
| 7198 | // All other types should be Objective-C interface pointer types. |
| 7199 | const ObjCObjectPointerType *PT = |
| 7200 | T->getAs<ObjCObjectPointerType>(); |
| 7201 | assert(PT && "Invalid @catch type."); |
| 7202 | const ObjCInterfaceType *IT = PT->getInterfaceType(); |
| 7203 | assert(IT && "Invalid @catch type."); |
| 7204 | return GetInterfaceEHType(IT->getDecl(), false); |
| 7205 | } |
| 7206 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 7207 | void CGObjCNonFragileABIMac::EmitTryStmt(CodeGen::CodeGenFunction &CGF, |
| 7208 | const ObjCAtTryStmt &S) { |
David Chisnall | 05dc91b | 2011-03-25 17:46:35 +0000 | [diff] [blame] | 7209 | EmitTryCatchStmt(CGF, S, |
| 7210 | cast<llvm::Function>(ObjCTypes.getObjCBeginCatchFn()), |
| 7211 | cast<llvm::Function>(ObjCTypes.getObjCEndCatchFn()), |
| 7212 | cast<llvm::Function>(ObjCTypes.getExceptionRethrowFn())); |
Daniel Dunbar | 8ecbaf2 | 2009-02-24 07:47:38 +0000 | [diff] [blame] | 7213 | } |
| 7214 | |
Anders Carlsson | f57c5b2 | 2009-02-16 22:59:18 +0000 | [diff] [blame] | 7215 | /// EmitThrowStmt - Generate code for a throw statement. |
| 7216 | void CGObjCNonFragileABIMac::EmitThrowStmt(CodeGen::CodeGenFunction &CGF, |
Fariborz Jahanian | 6a3c70e | 2013-01-10 19:02:56 +0000 | [diff] [blame] | 7217 | const ObjCAtThrowStmt &S, |
| 7218 | bool ClearInsertionPoint) { |
Anders Carlsson | f57c5b2 | 2009-02-16 22:59:18 +0000 | [diff] [blame] | 7219 | if (const Expr *ThrowExpr = S.getThrowExpr()) { |
John McCall | 2b014d6 | 2011-10-01 10:32:24 +0000 | [diff] [blame] | 7220 | llvm::Value *Exception = CGF.EmitObjCThrowOperand(ThrowExpr); |
Benjamin Kramer | 578faa8 | 2011-09-27 21:06:10 +0000 | [diff] [blame] | 7221 | Exception = CGF.Builder.CreateBitCast(Exception, ObjCTypes.ObjectPtrTy); |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 7222 | CGF.EmitRuntimeCallOrInvoke(ObjCTypes.getExceptionThrowFn(), Exception) |
John McCall | 7ec404c | 2010-10-16 08:21:07 +0000 | [diff] [blame] | 7223 | .setDoesNotReturn(); |
Anders Carlsson | f57c5b2 | 2009-02-16 22:59:18 +0000 | [diff] [blame] | 7224 | } else { |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 7225 | CGF.EmitRuntimeCallOrInvoke(ObjCTypes.getExceptionRethrowFn()) |
John McCall | 7ec404c | 2010-10-16 08:21:07 +0000 | [diff] [blame] | 7226 | .setDoesNotReturn(); |
Anders Carlsson | f57c5b2 | 2009-02-16 22:59:18 +0000 | [diff] [blame] | 7227 | } |
| 7228 | |
John McCall | 7ec404c | 2010-10-16 08:21:07 +0000 | [diff] [blame] | 7229 | CGF.Builder.CreateUnreachable(); |
Fariborz Jahanian | 6a3c70e | 2013-01-10 19:02:56 +0000 | [diff] [blame] | 7230 | if (ClearInsertionPoint) |
| 7231 | CGF.Builder.ClearInsertionPoint(); |
Anders Carlsson | f57c5b2 | 2009-02-16 22:59:18 +0000 | [diff] [blame] | 7232 | } |
Daniel Dunbar | e588b99 | 2009-03-01 04:46:24 +0000 | [diff] [blame] | 7233 | |
John McCall | 5a18039 | 2010-07-24 00:37:23 +0000 | [diff] [blame] | 7234 | llvm::Constant * |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7235 | CGObjCNonFragileABIMac::GetInterfaceEHType(const ObjCInterfaceDecl *ID, |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 7236 | bool ForDefinition) { |
Daniel Dunbar | e588b99 | 2009-03-01 04:46:24 +0000 | [diff] [blame] | 7237 | llvm::GlobalVariable * &Entry = EHTypeReferences[ID->getIdentifier()]; |
Daniel Dunbar | e588b99 | 2009-03-01 04:46:24 +0000 | [diff] [blame] | 7238 | |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 7239 | // If we don't need a definition, return the entry if found or check |
| 7240 | // if we use an external reference. |
| 7241 | if (!ForDefinition) { |
| 7242 | if (Entry) |
| 7243 | return Entry; |
Daniel Dunbar | 7e075cb | 2009-04-07 06:43:45 +0000 | [diff] [blame] | 7244 | |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 7245 | // If this type (or a super class) has the __objc_exception__ |
| 7246 | // attribute, emit an external reference. |
Douglas Gregor | 68584ed | 2009-06-18 16:11:24 +0000 | [diff] [blame] | 7247 | if (hasObjCExceptionAttribute(CGM.getContext(), ID)) |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7248 | return Entry = |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 7249 | new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.EHTypeTy, false, |
| 7250 | llvm::GlobalValue::ExternalLinkage, |
| 7251 | nullptr, |
| 7252 | ("OBJC_EHTYPE_$_" + |
| 7253 | ID->getObjCRuntimeNameAsString())); |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 7254 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7255 | |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 7256 | // Otherwise we need to either make a new entry or fill in the |
| 7257 | // initializer. |
| 7258 | assert((!Entry || !Entry->hasInitializer()) && "Duplicate EHType definition"); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 7259 | llvm::SmallString<64> ClassName(getClassSymbolPrefix()); |
| 7260 | ClassName += ID->getObjCRuntimeNameAsString(); |
Daniel Dunbar | e588b99 | 2009-03-01 04:46:24 +0000 | [diff] [blame] | 7261 | std::string VTableName = "objc_ehtype_vtable"; |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7262 | llvm::GlobalVariable *VTableGV = |
Daniel Dunbar | e588b99 | 2009-03-01 04:46:24 +0000 | [diff] [blame] | 7263 | CGM.getModule().getGlobalVariable(VTableName); |
| 7264 | if (!VTableGV) |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7265 | VTableGV = new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.Int8PtrTy, |
| 7266 | false, |
Daniel Dunbar | e588b99 | 2009-03-01 04:46:24 +0000 | [diff] [blame] | 7267 | llvm::GlobalValue::ExternalLinkage, |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 7268 | nullptr, VTableName); |
Daniel Dunbar | e588b99 | 2009-03-01 04:46:24 +0000 | [diff] [blame] | 7269 | |
Chris Lattner | 8b41868 | 2012-02-07 00:39:47 +0000 | [diff] [blame] | 7270 | llvm::Value *VTableIdx = llvm::ConstantInt::get(CGM.Int32Ty, 2); |
Daniel Dunbar | e588b99 | 2009-03-01 04:46:24 +0000 | [diff] [blame] | 7271 | |
Benjamin Kramer | 1d236ab | 2011-10-15 12:20:02 +0000 | [diff] [blame] | 7272 | llvm::Constant *Values[] = { |
Pirama Arumuga Nainar | 58878f8 | 2015-05-06 11:48:57 -0700 | [diff] [blame] | 7273 | llvm::ConstantExpr::getGetElementPtr(VTableGV->getValueType(), VTableGV, |
| 7274 | VTableIdx), |
| 7275 | GetClassName(ID->getObjCRuntimeNameAsString()), |
| 7276 | GetClassGlobal(ClassName.str())}; |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 7277 | llvm::Constant *Init = |
Owen Anderson | 08e2524 | 2009-07-27 22:29:56 +0000 | [diff] [blame] | 7278 | llvm::ConstantStruct::get(ObjCTypes.EHTypeTy, Values); |
Daniel Dunbar | e588b99 | 2009-03-01 04:46:24 +0000 | [diff] [blame] | 7279 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 7280 | llvm::GlobalValue::LinkageTypes L = ForDefinition |
| 7281 | ? llvm::GlobalValue::ExternalLinkage |
| 7282 | : llvm::GlobalValue::WeakAnyLinkage; |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 7283 | if (Entry) { |
| 7284 | Entry->setInitializer(Init); |
| 7285 | } else { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 7286 | llvm::SmallString<64> EHTYPEName("OBJC_EHTYPE_$_"); |
| 7287 | EHTYPEName += ID->getObjCRuntimeNameAsString(); |
Owen Anderson | 1c431b3 | 2009-07-08 19:05:04 +0000 | [diff] [blame] | 7288 | Entry = new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.EHTypeTy, false, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 7289 | L, |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7290 | Init, |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 7291 | EHTYPEName.str()); |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 7292 | } |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 7293 | assert(Entry->getLinkage() == L); |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 7294 | |
John McCall | 0b5a483 | 2013-02-19 01:57:29 +0000 | [diff] [blame] | 7295 | if (ID->getVisibility() == HiddenVisibility) |
Daniel Dunbar | 6ab187a | 2009-04-07 05:48:37 +0000 | [diff] [blame] | 7296 | Entry->setVisibility(llvm::GlobalValue::HiddenVisibility); |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 7297 | Entry->setAlignment(CGM.getDataLayout().getABITypeAlignment( |
Daniel Dunbar | 4b429ae | 2010-04-25 20:39:32 +0000 | [diff] [blame] | 7298 | ObjCTypes.EHTypeTy)); |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 7299 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 7300 | if (ForDefinition) |
Daniel Dunbar | 8158a2f | 2009-04-08 04:21:03 +0000 | [diff] [blame] | 7301 | Entry->setSection("__DATA,__objc_const"); |
Daniel Dunbar | e588b99 | 2009-03-01 04:46:24 +0000 | [diff] [blame] | 7302 | |
| 7303 | return Entry; |
| 7304 | } |
Daniel Dunbar | 6bff251 | 2009-08-03 17:06:42 +0000 | [diff] [blame] | 7305 | |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 7306 | /* *** */ |
| 7307 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 7308 | CodeGen::CGObjCRuntime * |
| 7309 | CodeGen::CreateMacObjCRuntime(CodeGen::CodeGenModule &CGM) { |
John McCall | 260611a | 2012-06-20 06:18:46 +0000 | [diff] [blame] | 7310 | switch (CGM.getLangOpts().ObjCRuntime.getKind()) { |
| 7311 | case ObjCRuntime::FragileMacOSX: |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 7312 | return new CGObjCMac(CGM); |
John McCall | 260611a | 2012-06-20 06:18:46 +0000 | [diff] [blame] | 7313 | |
| 7314 | case ObjCRuntime::MacOSX: |
| 7315 | case ObjCRuntime::iOS: |
Pirama Arumuga Nainar | 87d948e | 2016-03-03 15:49:35 -0800 | [diff] [blame] | 7316 | case ObjCRuntime::WatchOS: |
John McCall | 260611a | 2012-06-20 06:18:46 +0000 | [diff] [blame] | 7317 | return new CGObjCNonFragileABIMac(CGM); |
| 7318 | |
David Chisnall | 11d3f4c | 2012-07-03 20:49:52 +0000 | [diff] [blame] | 7319 | case ObjCRuntime::GNUstep: |
| 7320 | case ObjCRuntime::GCC: |
John McCall | f7226fb | 2012-07-12 02:07:58 +0000 | [diff] [blame] | 7321 | case ObjCRuntime::ObjFW: |
John McCall | 260611a | 2012-06-20 06:18:46 +0000 | [diff] [blame] | 7322 | llvm_unreachable("these runtimes are not Mac runtimes"); |
| 7323 | } |
| 7324 | llvm_unreachable("bad runtime"); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 7325 | } |