Daniel Dunbar | bd012ff | 2008-07-29 23:18:29 +0000 | [diff] [blame] | 1 | //===-- CodeGenFunction.h - Per-Function state for LLVM CodeGen -*- C++ -*-===// |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
Chris Lattner | 0bc735f | 2007-12-29 19:59:25 +0000 | [diff] [blame] | 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 10 | // This is the internal per-function state used for llvm translation. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
Chris Lattner | ef52a2f | 2008-02-29 17:10:38 +0000 | [diff] [blame] | 14 | #ifndef CLANG_CODEGEN_CODEGENFUNCTION_H |
| 15 | #define CLANG_CODEGEN_CODEGENFUNCTION_H |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 16 | |
Daniel Dunbar | 45d196b | 2008-11-01 01:53:16 +0000 | [diff] [blame] | 17 | #include "CGBuilder.h" |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 18 | #include "CGDebugInfo.h" |
Daniel Dunbar | 8f2926b | 2008-08-23 03:46:30 +0000 | [diff] [blame] | 19 | #include "CGValue.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 20 | #include "CodeGenModule.h" |
| 21 | #include "clang/AST/CharUnits.h" |
| 22 | #include "clang/AST/ExprCXX.h" |
| 23 | #include "clang/AST/ExprObjC.h" |
| 24 | #include "clang/AST/Type.h" |
| 25 | #include "clang/Basic/ABI.h" |
Ben Langmuir | 524387a | 2013-05-09 19:17:11 +0000 | [diff] [blame] | 26 | #include "clang/Basic/CapturedStmt.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 27 | #include "clang/Basic/TargetInfo.h" |
| 28 | #include "clang/Frontend/CodeGenOptions.h" |
| 29 | #include "llvm/ADT/ArrayRef.h" |
| 30 | #include "llvm/ADT/DenseMap.h" |
| 31 | #include "llvm/ADT/SmallVector.h" |
| 32 | #include "llvm/Support/Debug.h" |
| 33 | #include "llvm/Support/ValueHandle.h" |
Daniel Dunbar | 8f2926b | 2008-08-23 03:46:30 +0000 | [diff] [blame] | 34 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 35 | namespace llvm { |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 36 | class BasicBlock; |
Benjamin Kramer | f21efe9 | 2009-08-11 17:46:57 +0000 | [diff] [blame] | 37 | class LLVMContext; |
David Chisnall | dd5c98f | 2010-05-01 11:15:56 +0000 | [diff] [blame] | 38 | class MDNode; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 39 | class Module; |
Daniel Dunbar | 898d508 | 2008-09-30 01:06:03 +0000 | [diff] [blame] | 40 | class SwitchInst; |
Daniel Dunbar | 259e9cc | 2009-10-19 01:21:05 +0000 | [diff] [blame] | 41 | class Twine; |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 42 | class Value; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 43 | class CallSite; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 44 | } |
| 45 | |
| 46 | namespace clang { |
| 47 | class ASTContext; |
John McCall | 1a343eb | 2011-11-10 08:15:53 +0000 | [diff] [blame] | 48 | class BlockDecl; |
Anders Carlsson | 7267c16 | 2009-05-29 21:03:38 +0000 | [diff] [blame] | 49 | class CXXDestructorDecl; |
Richard Smith | ad762fc | 2011-04-14 22:09:26 +0000 | [diff] [blame] | 50 | class CXXForRangeStmt; |
Anders Carlsson | 6815e94 | 2009-09-27 18:58:34 +0000 | [diff] [blame] | 51 | class CXXTryStmt; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 52 | class Decl; |
Chris Lattner | ad8dcf4 | 2011-02-17 07:39:24 +0000 | [diff] [blame] | 53 | class LabelDecl; |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 54 | class EnumConstantDecl; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 55 | class FunctionDecl; |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 56 | class FunctionProtoType; |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 57 | class LabelStmt; |
Fariborz Jahanian | 679a502 | 2009-01-10 21:06:09 +0000 | [diff] [blame] | 58 | class ObjCContainerDecl; |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 59 | class ObjCInterfaceDecl; |
| 60 | class ObjCIvarDecl; |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 61 | class ObjCMethodDecl; |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 62 | class ObjCImplementationDecl; |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 63 | class ObjCPropertyImplDecl; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 64 | class TargetInfo; |
John McCall | 492c4f9 | 2010-03-03 04:15:11 +0000 | [diff] [blame] | 65 | class TargetCodeGenInfo; |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 66 | class VarDecl; |
Chris Lattner | 16f0049 | 2009-04-26 01:32:48 +0000 | [diff] [blame] | 67 | class ObjCForCollectionStmt; |
| 68 | class ObjCAtTryStmt; |
| 69 | class ObjCAtThrowStmt; |
| 70 | class ObjCAtSynchronizedStmt; |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 71 | class ObjCAutoreleasePoolStmt; |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 72 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 73 | namespace CodeGen { |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 74 | class CodeGenTypes; |
Daniel Dunbar | bb36d33 | 2009-02-02 21:43:58 +0000 | [diff] [blame] | 75 | class CGFunctionInfo; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 76 | class CGRecordLayout; |
John McCall | ee50429 | 2010-05-21 04:11:14 +0000 | [diff] [blame] | 77 | class CGBlockInfo; |
John McCall | 4c40d98 | 2010-08-31 07:33:07 +0000 | [diff] [blame] | 78 | class CGCXXABI; |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 79 | class BlockFlags; |
| 80 | class BlockFieldFlags; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 81 | |
John McCall | 9d232c8 | 2013-03-07 21:37:08 +0000 | [diff] [blame] | 82 | /// The kind of evaluation to perform on values of a particular |
| 83 | /// type. Basically, is the code in CGExprScalar, CGExprComplex, or |
| 84 | /// CGExprAgg? |
| 85 | /// |
| 86 | /// TODO: should vectors maybe be split out into their own thing? |
| 87 | enum TypeEvaluationKind { |
| 88 | TEK_Scalar, |
| 89 | TEK_Complex, |
| 90 | TEK_Aggregate |
| 91 | }; |
| 92 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 93 | /// A branch fixup. These are required when emitting a goto to a |
| 94 | /// label which hasn't been emitted yet. The goto is optimistically |
| 95 | /// emitted as a branch to the basic block for the label, and (if it |
| 96 | /// occurs in a scope with non-trivial cleanups) a fixup is added to |
| 97 | /// the innermost cleanup. When a (normal) cleanup is popped, any |
| 98 | /// unresolved fixups in that scope are threaded through the cleanup. |
| 99 | struct BranchFixup { |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 100 | /// The block containing the terminator which needs to be modified |
| 101 | /// into a switch if this fixup is resolved into the current scope. |
| 102 | /// If null, LatestBranch points directly to the destination. |
| 103 | llvm::BasicBlock *OptimisticBranchBlock; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 104 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 105 | /// The ultimate destination of the branch. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 106 | /// |
| 107 | /// This can be set to null to indicate that this fixup was |
| 108 | /// successfully resolved. |
| 109 | llvm::BasicBlock *Destination; |
| 110 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 111 | /// The destination index value. |
| 112 | unsigned DestinationIndex; |
| 113 | |
| 114 | /// The initial branch of the fixup. |
| 115 | llvm::BranchInst *InitialBranch; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 116 | }; |
| 117 | |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 118 | template <class T> struct InvariantValue { |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 119 | typedef T type; |
| 120 | typedef T saved_type; |
| 121 | static bool needsSaving(type value) { return false; } |
| 122 | static saved_type save(CodeGenFunction &CGF, type value) { return value; } |
| 123 | static type restore(CodeGenFunction &CGF, saved_type value) { return value; } |
| 124 | }; |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 125 | |
| 126 | /// A metaprogramming class for ensuring that a value will dominate an |
| 127 | /// arbitrary position in a function. |
| 128 | template <class T> struct DominatingValue : InvariantValue<T> {}; |
| 129 | |
| 130 | template <class T, bool mightBeInstruction = |
| 131 | llvm::is_base_of<llvm::Value, T>::value && |
| 132 | !llvm::is_base_of<llvm::Constant, T>::value && |
| 133 | !llvm::is_base_of<llvm::BasicBlock, T>::value> |
| 134 | struct DominatingPointer; |
| 135 | template <class T> struct DominatingPointer<T,false> : InvariantValue<T*> {}; |
| 136 | // template <class T> struct DominatingPointer<T,true> at end of file |
| 137 | |
| 138 | template <class T> struct DominatingValue<T*> : DominatingPointer<T> {}; |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 139 | |
John McCall | cd2d2b7 | 2010-08-13 21:20:51 +0000 | [diff] [blame] | 140 | enum CleanupKind { |
| 141 | EHCleanup = 0x1, |
| 142 | NormalCleanup = 0x2, |
| 143 | NormalAndEHCleanup = EHCleanup | NormalCleanup, |
| 144 | |
| 145 | InactiveCleanup = 0x4, |
| 146 | InactiveEHCleanup = EHCleanup | InactiveCleanup, |
| 147 | InactiveNormalCleanup = NormalCleanup | InactiveCleanup, |
| 148 | InactiveNormalAndEHCleanup = NormalAndEHCleanup | InactiveCleanup |
| 149 | }; |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 150 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 151 | /// A stack of scopes which respond to exceptions, including cleanups |
| 152 | /// and catch blocks. |
| 153 | class EHScopeStack { |
| 154 | public: |
| 155 | /// A saved depth on the scope stack. This is necessary because |
| 156 | /// pushing scopes onto the stack invalidates iterators. |
| 157 | class stable_iterator { |
| 158 | friend class EHScopeStack; |
| 159 | |
| 160 | /// Offset from StartOfData to EndOfBuffer. |
| 161 | ptrdiff_t Size; |
| 162 | |
| 163 | stable_iterator(ptrdiff_t Size) : Size(Size) {} |
| 164 | |
| 165 | public: |
| 166 | static stable_iterator invalid() { return stable_iterator(-1); } |
| 167 | stable_iterator() : Size(-1) {} |
| 168 | |
| 169 | bool isValid() const { return Size >= 0; } |
| 170 | |
John McCall | 838d796 | 2010-08-14 07:46:19 +0000 | [diff] [blame] | 171 | /// Returns true if this scope encloses I. |
| 172 | /// Returns false if I is invalid. |
| 173 | /// This scope must be valid. |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 174 | bool encloses(stable_iterator I) const { return Size <= I.Size; } |
John McCall | 838d796 | 2010-08-14 07:46:19 +0000 | [diff] [blame] | 175 | |
| 176 | /// Returns true if this scope strictly encloses I: that is, |
| 177 | /// if it encloses I and is not I. |
| 178 | /// Returns false is I is invalid. |
| 179 | /// This scope must be valid. |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 180 | bool strictlyEncloses(stable_iterator I) const { return Size < I.Size; } |
John McCall | 1bda662 | 2010-07-21 00:40:03 +0000 | [diff] [blame] | 181 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 182 | friend bool operator==(stable_iterator A, stable_iterator B) { |
| 183 | return A.Size == B.Size; |
| 184 | } |
| 185 | friend bool operator!=(stable_iterator A, stable_iterator B) { |
| 186 | return A.Size != B.Size; |
| 187 | } |
| 188 | }; |
| 189 | |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 190 | /// Information for lazily generating a cleanup. Subclasses must be |
| 191 | /// POD-like: cleanups will not be destructed, and they will be |
| 192 | /// allocated on the cleanup stack and freely copied and moved |
| 193 | /// around. |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 194 | /// |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 195 | /// Cleanup implementations should generally be declared in an |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 196 | /// anonymous namespace. |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 197 | class Cleanup { |
John McCall | c4a1a84 | 2011-07-12 00:15:30 +0000 | [diff] [blame] | 198 | // Anchor the construction vtable. |
| 199 | virtual void anchor(); |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 200 | public: |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 201 | /// Generation flags. |
| 202 | class Flags { |
| 203 | enum { |
| 204 | F_IsForEH = 0x1, |
| 205 | F_IsNormalCleanupKind = 0x2, |
| 206 | F_IsEHCleanupKind = 0x4 |
| 207 | }; |
| 208 | unsigned flags; |
| 209 | |
| 210 | public: |
| 211 | Flags() : flags(0) {} |
| 212 | |
| 213 | /// isForEH - true if the current emission is for an EH cleanup. |
| 214 | bool isForEHCleanup() const { return flags & F_IsForEH; } |
| 215 | bool isForNormalCleanup() const { return !isForEHCleanup(); } |
| 216 | void setIsForEHCleanup() { flags |= F_IsForEH; } |
| 217 | |
| 218 | bool isNormalCleanupKind() const { return flags & F_IsNormalCleanupKind; } |
| 219 | void setIsNormalCleanupKind() { flags |= F_IsNormalCleanupKind; } |
| 220 | |
| 221 | /// isEHCleanupKind - true if the cleanup was pushed as an EH |
| 222 | /// cleanup. |
| 223 | bool isEHCleanupKind() const { return flags & F_IsEHCleanupKind; } |
| 224 | void setIsEHCleanupKind() { flags |= F_IsEHCleanupKind; } |
| 225 | }; |
| 226 | |
John McCall | c4a1a84 | 2011-07-12 00:15:30 +0000 | [diff] [blame] | 227 | // Provide a virtual destructor to suppress a very common warning |
| 228 | // that unfortunately cannot be suppressed without this. Cleanups |
| 229 | // should not rely on this destructor ever being called. |
| 230 | virtual ~Cleanup() {} |
John McCall | 3e29f96 | 2010-07-13 23:19:49 +0000 | [diff] [blame] | 231 | |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 232 | /// Emit the cleanup. For normal cleanups, this is run in the |
| 233 | /// same EH context as when the cleanup was pushed, i.e. the |
| 234 | /// immediately-enclosing context of the cleanup scope. For |
| 235 | /// EH cleanups, this is run in a terminate context. |
| 236 | /// |
Dmitri Gribenko | 70517ca | 2012-08-23 17:58:28 +0000 | [diff] [blame] | 237 | // \param flags cleanup kind. |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 238 | virtual void Emit(CodeGenFunction &CGF, Flags flags) = 0; |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 239 | }; |
| 240 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 241 | /// ConditionalCleanupN stores the saved form of its N parameters, |
| 242 | /// then restores them and performs the cleanup. |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 243 | template <class T, class A0> |
| 244 | class ConditionalCleanup1 : public Cleanup { |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 245 | typedef typename DominatingValue<A0>::saved_type A0_saved; |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 246 | A0_saved a0_saved; |
| 247 | |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 248 | void Emit(CodeGenFunction &CGF, Flags flags) { |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 249 | A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 250 | T(a0).Emit(CGF, flags); |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 251 | } |
| 252 | |
| 253 | public: |
| 254 | ConditionalCleanup1(A0_saved a0) |
| 255 | : a0_saved(a0) {} |
| 256 | }; |
| 257 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 258 | template <class T, class A0, class A1> |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 259 | class ConditionalCleanup2 : public Cleanup { |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 260 | typedef typename DominatingValue<A0>::saved_type A0_saved; |
| 261 | typedef typename DominatingValue<A1>::saved_type A1_saved; |
John McCall | 4bbcbda | 2011-01-26 19:15:39 +0000 | [diff] [blame] | 262 | A0_saved a0_saved; |
| 263 | A1_saved a1_saved; |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 264 | |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 265 | void Emit(CodeGenFunction &CGF, Flags flags) { |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 266 | A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); |
| 267 | A1 a1 = DominatingValue<A1>::restore(CGF, a1_saved); |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 268 | T(a0, a1).Emit(CGF, flags); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 269 | } |
| 270 | |
| 271 | public: |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 272 | ConditionalCleanup2(A0_saved a0, A1_saved a1) |
| 273 | : a0_saved(a0), a1_saved(a1) {} |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 274 | }; |
| 275 | |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 276 | template <class T, class A0, class A1, class A2> |
| 277 | class ConditionalCleanup3 : public Cleanup { |
| 278 | typedef typename DominatingValue<A0>::saved_type A0_saved; |
| 279 | typedef typename DominatingValue<A1>::saved_type A1_saved; |
| 280 | typedef typename DominatingValue<A2>::saved_type A2_saved; |
| 281 | A0_saved a0_saved; |
| 282 | A1_saved a1_saved; |
| 283 | A2_saved a2_saved; |
| 284 | |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 285 | void Emit(CodeGenFunction &CGF, Flags flags) { |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 286 | A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); |
| 287 | A1 a1 = DominatingValue<A1>::restore(CGF, a1_saved); |
| 288 | A2 a2 = DominatingValue<A2>::restore(CGF, a2_saved); |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 289 | T(a0, a1, a2).Emit(CGF, flags); |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 290 | } |
| 291 | |
| 292 | public: |
| 293 | ConditionalCleanup3(A0_saved a0, A1_saved a1, A2_saved a2) |
John McCall | c4a1a84 | 2011-07-12 00:15:30 +0000 | [diff] [blame] | 294 | : a0_saved(a0), a1_saved(a1), a2_saved(a2) {} |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 295 | }; |
| 296 | |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 297 | template <class T, class A0, class A1, class A2, class A3> |
| 298 | class ConditionalCleanup4 : public Cleanup { |
| 299 | typedef typename DominatingValue<A0>::saved_type A0_saved; |
| 300 | typedef typename DominatingValue<A1>::saved_type A1_saved; |
| 301 | typedef typename DominatingValue<A2>::saved_type A2_saved; |
| 302 | typedef typename DominatingValue<A3>::saved_type A3_saved; |
| 303 | A0_saved a0_saved; |
| 304 | A1_saved a1_saved; |
| 305 | A2_saved a2_saved; |
| 306 | A3_saved a3_saved; |
| 307 | |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 308 | void Emit(CodeGenFunction &CGF, Flags flags) { |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 309 | A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); |
| 310 | A1 a1 = DominatingValue<A1>::restore(CGF, a1_saved); |
| 311 | A2 a2 = DominatingValue<A2>::restore(CGF, a2_saved); |
| 312 | A3 a3 = DominatingValue<A3>::restore(CGF, a3_saved); |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 313 | T(a0, a1, a2, a3).Emit(CGF, flags); |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | public: |
| 317 | ConditionalCleanup4(A0_saved a0, A1_saved a1, A2_saved a2, A3_saved a3) |
| 318 | : a0_saved(a0), a1_saved(a1), a2_saved(a2), a3_saved(a3) {} |
| 319 | }; |
| 320 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 321 | private: |
| 322 | // The implementation for this class is in CGException.h and |
| 323 | // CGException.cpp; the definition is here because it's used as a |
| 324 | // member of CodeGenFunction. |
| 325 | |
| 326 | /// The start of the scope-stack buffer, i.e. the allocated pointer |
| 327 | /// for the buffer. All of these pointers are either simultaneously |
| 328 | /// null or simultaneously valid. |
| 329 | char *StartOfBuffer; |
| 330 | |
| 331 | /// The end of the buffer. |
| 332 | char *EndOfBuffer; |
| 333 | |
| 334 | /// The first valid entry in the buffer. |
| 335 | char *StartOfData; |
| 336 | |
| 337 | /// The innermost normal cleanup on the stack. |
| 338 | stable_iterator InnermostNormalCleanup; |
| 339 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 340 | /// The innermost EH scope on the stack. |
| 341 | stable_iterator InnermostEHScope; |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 342 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 343 | /// The current set of branch fixups. A branch fixup is a jump to |
| 344 | /// an as-yet unemitted label, i.e. a label for which we don't yet |
| 345 | /// know the EH stack depth. Whenever we pop a cleanup, we have |
| 346 | /// to thread all the current branch fixups through it. |
| 347 | /// |
| 348 | /// Fixups are recorded as the Use of the respective branch or |
| 349 | /// switch statement. The use points to the final destination. |
| 350 | /// When popping out of a cleanup, these uses are threaded through |
| 351 | /// the cleanup and adjusted to point to the new cleanup. |
| 352 | /// |
| 353 | /// Note that branches are allowed to jump into protected scopes |
| 354 | /// in certain situations; e.g. the following code is legal: |
| 355 | /// struct A { ~A(); }; // trivial ctor, non-trivial dtor |
| 356 | /// goto foo; |
| 357 | /// A a; |
| 358 | /// foo: |
| 359 | /// bar(); |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 360 | SmallVector<BranchFixup, 8> BranchFixups; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 361 | |
| 362 | char *allocate(size_t Size); |
| 363 | |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 364 | void *pushCleanup(CleanupKind K, size_t DataSize); |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 365 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 366 | public: |
| 367 | EHScopeStack() : StartOfBuffer(0), EndOfBuffer(0), StartOfData(0), |
| 368 | InnermostNormalCleanup(stable_end()), |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 369 | InnermostEHScope(stable_end()) {} |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 370 | ~EHScopeStack() { delete[] StartOfBuffer; } |
| 371 | |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 372 | // Variadic templates would make this not terrible. |
| 373 | |
| 374 | /// Push a lazily-created cleanup on the stack. |
John McCall | 8e3f861 | 2010-07-13 22:12:14 +0000 | [diff] [blame] | 375 | template <class T> |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 376 | void pushCleanup(CleanupKind Kind) { |
| 377 | void *Buffer = pushCleanup(Kind, sizeof(T)); |
| 378 | Cleanup *Obj = new(Buffer) T(); |
John McCall | 8e3f861 | 2010-07-13 22:12:14 +0000 | [diff] [blame] | 379 | (void) Obj; |
| 380 | } |
| 381 | |
| 382 | /// Push a lazily-created cleanup on the stack. |
| 383 | template <class T, class A0> |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 384 | void pushCleanup(CleanupKind Kind, A0 a0) { |
| 385 | void *Buffer = pushCleanup(Kind, sizeof(T)); |
| 386 | Cleanup *Obj = new(Buffer) T(a0); |
John McCall | 8e3f861 | 2010-07-13 22:12:14 +0000 | [diff] [blame] | 387 | (void) Obj; |
| 388 | } |
| 389 | |
| 390 | /// Push a lazily-created cleanup on the stack. |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 391 | template <class T, class A0, class A1> |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 392 | void pushCleanup(CleanupKind Kind, A0 a0, A1 a1) { |
| 393 | void *Buffer = pushCleanup(Kind, sizeof(T)); |
| 394 | Cleanup *Obj = new(Buffer) T(a0, a1); |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 395 | (void) Obj; |
| 396 | } |
| 397 | |
| 398 | /// Push a lazily-created cleanup on the stack. |
| 399 | template <class T, class A0, class A1, class A2> |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 400 | void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2) { |
| 401 | void *Buffer = pushCleanup(Kind, sizeof(T)); |
| 402 | Cleanup *Obj = new(Buffer) T(a0, a1, a2); |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 403 | (void) Obj; |
| 404 | } |
| 405 | |
| 406 | /// Push a lazily-created cleanup on the stack. |
| 407 | template <class T, class A0, class A1, class A2, class A3> |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 408 | void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2, A3 a3) { |
| 409 | void *Buffer = pushCleanup(Kind, sizeof(T)); |
| 410 | Cleanup *Obj = new(Buffer) T(a0, a1, a2, a3); |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 411 | (void) Obj; |
| 412 | } |
| 413 | |
John McCall | 7719971 | 2010-07-21 05:47:49 +0000 | [diff] [blame] | 414 | /// Push a lazily-created cleanup on the stack. |
| 415 | template <class T, class A0, class A1, class A2, class A3, class A4> |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 416 | void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2, A3 a3, A4 a4) { |
| 417 | void *Buffer = pushCleanup(Kind, sizeof(T)); |
| 418 | Cleanup *Obj = new(Buffer) T(a0, a1, a2, a3, a4); |
John McCall | 7719971 | 2010-07-21 05:47:49 +0000 | [diff] [blame] | 419 | (void) Obj; |
| 420 | } |
| 421 | |
John McCall | 7d8647f | 2010-09-14 07:57:04 +0000 | [diff] [blame] | 422 | // Feel free to add more variants of the following: |
| 423 | |
| 424 | /// Push a cleanup with non-constant storage requirements on the |
| 425 | /// stack. The cleanup type must provide an additional static method: |
| 426 | /// static size_t getExtraSize(size_t); |
| 427 | /// The argument to this method will be the value N, which will also |
| 428 | /// be passed as the first argument to the constructor. |
| 429 | /// |
| 430 | /// The data stored in the extra storage must obey the same |
| 431 | /// restrictions as normal cleanup member data. |
| 432 | /// |
| 433 | /// The pointer returned from this method is valid until the cleanup |
| 434 | /// stack is modified. |
| 435 | template <class T, class A0, class A1, class A2> |
| 436 | T *pushCleanupWithExtra(CleanupKind Kind, size_t N, A0 a0, A1 a1, A2 a2) { |
| 437 | void *Buffer = pushCleanup(Kind, sizeof(T) + T::getExtraSize(N)); |
| 438 | return new (Buffer) T(N, a0, a1, a2); |
| 439 | } |
| 440 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 441 | /// Pops a cleanup scope off the stack. This is private to CGCleanup.cpp. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 442 | void popCleanup(); |
| 443 | |
| 444 | /// Push a set of catch handlers on the stack. The catch is |
| 445 | /// uninitialized and will need to have the given number of handlers |
| 446 | /// set on it. |
| 447 | class EHCatchScope *pushCatch(unsigned NumHandlers); |
| 448 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 449 | /// Pops a catch scope off the stack. This is private to CGException.cpp. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 450 | void popCatch(); |
| 451 | |
| 452 | /// Push an exceptions filter on the stack. |
| 453 | class EHFilterScope *pushFilter(unsigned NumFilters); |
| 454 | |
| 455 | /// Pops an exceptions filter off the stack. |
| 456 | void popFilter(); |
| 457 | |
| 458 | /// Push a terminate handler on the stack. |
| 459 | void pushTerminate(); |
| 460 | |
| 461 | /// Pops a terminate handler off the stack. |
| 462 | void popTerminate(); |
| 463 | |
| 464 | /// Determines whether the exception-scopes stack is empty. |
| 465 | bool empty() const { return StartOfData == EndOfBuffer; } |
| 466 | |
| 467 | bool requiresLandingPad() const { |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 468 | return InnermostEHScope != stable_end(); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 469 | } |
| 470 | |
| 471 | /// Determines whether there are any normal cleanups on the stack. |
| 472 | bool hasNormalCleanups() const { |
| 473 | return InnermostNormalCleanup != stable_end(); |
| 474 | } |
| 475 | |
| 476 | /// Returns the innermost normal cleanup on the stack, or |
| 477 | /// stable_end() if there are no normal cleanups. |
| 478 | stable_iterator getInnermostNormalCleanup() const { |
| 479 | return InnermostNormalCleanup; |
| 480 | } |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 481 | stable_iterator getInnermostActiveNormalCleanup() const; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 482 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 483 | stable_iterator getInnermostEHScope() const { |
| 484 | return InnermostEHScope; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 485 | } |
| 486 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 487 | stable_iterator getInnermostActiveEHScope() const; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 488 | |
| 489 | /// An unstable reference to a scope-stack depth. Invalidated by |
| 490 | /// pushes but not pops. |
| 491 | class iterator; |
| 492 | |
| 493 | /// Returns an iterator pointing to the innermost EH scope. |
| 494 | iterator begin() const; |
| 495 | |
| 496 | /// Returns an iterator pointing to the outermost EH scope. |
| 497 | iterator end() const; |
| 498 | |
| 499 | /// Create a stable reference to the top of the EH stack. The |
| 500 | /// returned reference is valid until that scope is popped off the |
| 501 | /// stack. |
| 502 | stable_iterator stable_begin() const { |
| 503 | return stable_iterator(EndOfBuffer - StartOfData); |
| 504 | } |
| 505 | |
| 506 | /// Create a stable reference to the bottom of the EH stack. |
| 507 | static stable_iterator stable_end() { |
| 508 | return stable_iterator(0); |
| 509 | } |
| 510 | |
| 511 | /// Translates an iterator into a stable_iterator. |
| 512 | stable_iterator stabilize(iterator it) const; |
| 513 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 514 | /// Turn a stable reference to a scope depth into a unstable pointer |
| 515 | /// to the EH stack. |
| 516 | iterator find(stable_iterator save) const; |
| 517 | |
| 518 | /// Removes the cleanup pointed to by the given stable_iterator. |
| 519 | void removeCleanup(stable_iterator save); |
| 520 | |
| 521 | /// Add a branch fixup to the current cleanup scope. |
| 522 | BranchFixup &addBranchFixup() { |
| 523 | assert(hasNormalCleanups() && "adding fixup in scope without cleanups"); |
| 524 | BranchFixups.push_back(BranchFixup()); |
| 525 | return BranchFixups.back(); |
| 526 | } |
| 527 | |
| 528 | unsigned getNumBranchFixups() const { return BranchFixups.size(); } |
| 529 | BranchFixup &getBranchFixup(unsigned I) { |
| 530 | assert(I < getNumBranchFixups()); |
| 531 | return BranchFixups[I]; |
| 532 | } |
| 533 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 534 | /// Pops lazily-removed fixups from the end of the list. This |
| 535 | /// should only be called by procedures which have just popped a |
| 536 | /// cleanup or resolved one or more fixups. |
| 537 | void popNullFixups(); |
| 538 | |
| 539 | /// Clears the branch-fixups list. This should only be called by |
John McCall | 8abdbd8 | 2010-09-18 02:24:39 +0000 | [diff] [blame] | 540 | /// ResolveAllBranchFixups. |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 541 | void clearFixups() { BranchFixups.clear(); } |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 542 | }; |
| 543 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 544 | /// CodeGenFunction - This class organizes the per-function state that is used |
| 545 | /// while generating LLVM code. |
John McCall | 5936e33 | 2011-02-15 09:22:45 +0000 | [diff] [blame] | 546 | class CodeGenFunction : public CodeGenTypeCache { |
Dmitri Gribenko | f56faa0 | 2012-09-15 20:20:27 +0000 | [diff] [blame] | 547 | CodeGenFunction(const CodeGenFunction &) LLVM_DELETED_FUNCTION; |
| 548 | void operator=(const CodeGenFunction &) LLVM_DELETED_FUNCTION; |
John McCall | 4c40d98 | 2010-08-31 07:33:07 +0000 | [diff] [blame] | 549 | |
| 550 | friend class CGCXXABI; |
Chris Lattner | bfc0c1a | 2007-08-26 23:13:56 +0000 | [diff] [blame] | 551 | public: |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 552 | /// A jump destination is an abstract label, branching to which may |
| 553 | /// require a jump out through normal cleanups. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 554 | struct JumpDest { |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 555 | JumpDest() : Block(0), ScopeDepth(), Index(0) {} |
| 556 | JumpDest(llvm::BasicBlock *Block, |
| 557 | EHScopeStack::stable_iterator Depth, |
| 558 | unsigned Index) |
| 559 | : Block(Block), ScopeDepth(Depth), Index(Index) {} |
| 560 | |
| 561 | bool isValid() const { return Block != 0; } |
| 562 | llvm::BasicBlock *getBlock() const { return Block; } |
| 563 | EHScopeStack::stable_iterator getScopeDepth() const { return ScopeDepth; } |
| 564 | unsigned getDestIndex() const { return Index; } |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 565 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 566 | // This should be used cautiously. |
| 567 | void setScopeDepth(EHScopeStack::stable_iterator depth) { |
| 568 | ScopeDepth = depth; |
| 569 | } |
| 570 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 571 | private: |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 572 | llvm::BasicBlock *Block; |
| 573 | EHScopeStack::stable_iterator ScopeDepth; |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 574 | unsigned Index; |
| 575 | }; |
| 576 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 577 | CodeGenModule &CGM; // Per-module state. |
Daniel Dunbar | 444be73 | 2009-11-13 05:51:54 +0000 | [diff] [blame] | 578 | const TargetInfo &Target; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 579 | |
Chris Lattner | 58dee10 | 2007-08-21 16:57:55 +0000 | [diff] [blame] | 580 | typedef std::pair<llvm::Value *, llvm::Value *> ComplexPairTy; |
Daniel Dunbar | 45d196b | 2008-11-01 01:53:16 +0000 | [diff] [blame] | 581 | CGBuilderTy Builder; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 582 | |
John McCall | f5ebf9b | 2013-05-03 07:33:41 +0000 | [diff] [blame] | 583 | /// CurFuncDecl - Holds the Decl for the current outermost |
| 584 | /// non-closure context. |
Chris Lattner | 4111024 | 2008-06-17 18:05:57 +0000 | [diff] [blame] | 585 | const Decl *CurFuncDecl; |
Chris Lattner | b5437d2 | 2009-04-23 05:30:27 +0000 | [diff] [blame] | 586 | /// CurCodeDecl - This is the inner-most code context, which includes blocks. |
| 587 | const Decl *CurCodeDecl; |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 588 | const CGFunctionInfo *CurFnInfo; |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 589 | QualType FnRetTy; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 590 | llvm::Function *CurFn; |
| 591 | |
Mike Stump | 6a1e0eb | 2009-12-04 23:26:17 +0000 | [diff] [blame] | 592 | /// CurGD - The GlobalDecl for the current function being compiled. |
| 593 | GlobalDecl CurGD; |
Mike Stump | 6a1e0eb | 2009-12-04 23:26:17 +0000 | [diff] [blame] | 594 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 595 | /// PrologueCleanupDepth - The cleanup depth enclosing all the |
| 596 | /// cleanups associated with the parameters. |
| 597 | EHScopeStack::stable_iterator PrologueCleanupDepth; |
| 598 | |
Daniel Dunbar | 5ca2084 | 2008-09-09 21:00:17 +0000 | [diff] [blame] | 599 | /// ReturnBlock - Unified return block. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 600 | JumpDest ReturnBlock; |
| 601 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 602 | /// ReturnValue - The temporary alloca to hold the return value. This is null |
Sylvestre Ledru | f3477c1 | 2012-09-27 10:16:10 +0000 | [diff] [blame] | 603 | /// iff the function has no return value. |
Eli Friedman | b17daf9 | 2009-12-04 02:43:40 +0000 | [diff] [blame] | 604 | llvm::Value *ReturnValue; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 605 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 606 | /// AllocaInsertPoint - This is an instruction in the entry block before which |
| 607 | /// we prefer to insert allocas. |
Chris Lattner | 481769b | 2009-03-31 22:17:44 +0000 | [diff] [blame] | 608 | llvm::AssertingVH<llvm::Instruction> AllocaInsertPt; |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 609 | |
Ben Langmuir | 524387a | 2013-05-09 19:17:11 +0000 | [diff] [blame] | 610 | /// \brief API for captured statement code generation. |
| 611 | class CGCapturedStmtInfo { |
| 612 | public: |
| 613 | explicit CGCapturedStmtInfo(const CapturedStmt &S, |
| 614 | CapturedRegionKind K = CR_Default) |
| 615 | : Kind(K), ThisValue(0), CXXThisFieldDecl(0) { |
| 616 | |
| 617 | RecordDecl::field_iterator Field = |
| 618 | S.getCapturedRecordDecl()->field_begin(); |
| 619 | for (CapturedStmt::const_capture_iterator I = S.capture_begin(), |
| 620 | E = S.capture_end(); |
| 621 | I != E; ++I, ++Field) { |
| 622 | if (I->capturesThis()) |
| 623 | CXXThisFieldDecl = *Field; |
| 624 | else |
| 625 | CaptureFields[I->getCapturedVar()] = *Field; |
| 626 | } |
| 627 | } |
| 628 | |
| 629 | virtual ~CGCapturedStmtInfo(); |
| 630 | |
| 631 | CapturedRegionKind getKind() const { return Kind; } |
| 632 | |
| 633 | void setContextValue(llvm::Value *V) { ThisValue = V; } |
| 634 | // \brief Retrieve the value of the context parameter. |
| 635 | llvm::Value *getContextValue() const { return ThisValue; } |
| 636 | |
| 637 | /// \brief Lookup the captured field decl for a variable. |
| 638 | const FieldDecl *lookup(const VarDecl *VD) const { |
| 639 | return CaptureFields.lookup(VD); |
| 640 | } |
| 641 | |
| 642 | bool isCXXThisExprCaptured() const { return CXXThisFieldDecl != 0; } |
| 643 | FieldDecl *getThisFieldDecl() const { return CXXThisFieldDecl; } |
| 644 | |
| 645 | /// \brief Emit the captured statement body. |
| 646 | virtual void EmitBody(CodeGenFunction &CGF, Stmt *S) { |
| 647 | CGF.EmitStmt(S); |
| 648 | } |
| 649 | |
| 650 | /// \brief Get the name of the capture helper. |
| 651 | virtual StringRef getHelperName() const { return "__captured_stmt"; } |
| 652 | |
| 653 | private: |
| 654 | /// \brief The kind of captured statement being generated. |
| 655 | CapturedRegionKind Kind; |
| 656 | |
| 657 | /// \brief Keep the map between VarDecl and FieldDecl. |
| 658 | llvm::SmallDenseMap<const VarDecl *, FieldDecl *> CaptureFields; |
| 659 | |
| 660 | /// \brief The base address of the captured record, passed in as the first |
| 661 | /// argument of the parallel region function. |
| 662 | llvm::Value *ThisValue; |
| 663 | |
| 664 | /// \brief Captured 'this' type. |
| 665 | FieldDecl *CXXThisFieldDecl; |
| 666 | }; |
| 667 | CGCapturedStmtInfo *CapturedStmtInfo; |
| 668 | |
Nuno Lopes | b3198a8 | 2012-05-08 22:10:46 +0000 | [diff] [blame] | 669 | /// BoundsChecking - Emit run-time bounds checks. Higher values mean |
| 670 | /// potentially higher performance penalties. |
| 671 | unsigned char BoundsChecking; |
| 672 | |
Richard Smith | d6396a6 | 2012-11-05 22:21:05 +0000 | [diff] [blame] | 673 | /// \brief Whether any type-checking sanitizers are enabled. If \c false, |
| 674 | /// calls to EmitTypeCheck can be skipped. |
| 675 | bool SanitizePerformTypeCheck; |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 676 | |
Will Dietz | 4f45bc0 | 2013-01-18 11:30:38 +0000 | [diff] [blame] | 677 | /// \brief Sanitizer options to use for this function. |
| 678 | const SanitizerOptions *SanOpts; |
| 679 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 680 | /// In ARC, whether we should autorelease the return value. |
| 681 | bool AutoreleaseResult; |
| 682 | |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 683 | const CodeGen::CGBlockInfo *BlockInfo; |
| 684 | llvm::Value *BlockPointer; |
| 685 | |
Eli Friedman | cec5ebd | 2012-02-11 02:57:39 +0000 | [diff] [blame] | 686 | llvm::DenseMap<const VarDecl *, FieldDecl *> LambdaCaptureFields; |
| 687 | FieldDecl *LambdaThisCaptureField; |
| 688 | |
Douglas Gregor | 3d91bbc | 2010-05-17 15:52:46 +0000 | [diff] [blame] | 689 | /// \brief A mapping from NRVO variables to the flags used to indicate |
| 690 | /// when the NRVO has been applied to this variable. |
| 691 | llvm::DenseMap<const VarDecl *, llvm::Value *> NRVOFlags; |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 692 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 693 | EHScopeStack EHStack; |
| 694 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 695 | /// i32s containing the indexes of the cleanup destinations. |
| 696 | llvm::AllocaInst *NormalCleanupDest; |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 697 | |
| 698 | unsigned NextCleanupDestIndex; |
| 699 | |
John McCall | 1a343eb | 2011-11-10 08:15:53 +0000 | [diff] [blame] | 700 | /// FirstBlockInfo - The head of a singly-linked-list of block layouts. |
| 701 | CGBlockInfo *FirstBlockInfo; |
| 702 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 703 | /// EHResumeBlock - Unified block containing a call to llvm.eh.resume. |
| 704 | llvm::BasicBlock *EHResumeBlock; |
| 705 | |
Bill Wendling | 285cfd8 | 2011-09-19 20:31:14 +0000 | [diff] [blame] | 706 | /// The exception slot. All landing pads write the current exception pointer |
| 707 | /// into this alloca. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 708 | llvm::Value *ExceptionSlot; |
| 709 | |
Bill Wendling | 285cfd8 | 2011-09-19 20:31:14 +0000 | [diff] [blame] | 710 | /// The selector slot. Under the MandatoryCleanup model, all landing pads |
| 711 | /// write the current selector value into this alloca. |
John McCall | 93c332a | 2011-05-28 21:13:02 +0000 | [diff] [blame] | 712 | llvm::AllocaInst *EHSelectorSlot; |
| 713 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 714 | /// Emits a landing pad for the current EH stack. |
| 715 | llvm::BasicBlock *EmitLandingPad(); |
| 716 | |
| 717 | llvm::BasicBlock *getInvokeDestImpl(); |
| 718 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 719 | template <class T> |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 720 | typename DominatingValue<T>::saved_type saveValueInCond(T value) { |
| 721 | return DominatingValue<T>::save(*this, value); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 722 | } |
| 723 | |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 724 | public: |
Anders Carlsson | fa1f756 | 2009-02-10 06:07:49 +0000 | [diff] [blame] | 725 | /// ObjCEHValueStack - Stack of Objective-C exception values, used for |
| 726 | /// rethrows. |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 727 | SmallVector<llvm::Value*, 8> ObjCEHValueStack; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 728 | |
John McCall | d768e9d | 2011-06-22 02:32:12 +0000 | [diff] [blame] | 729 | /// A class controlling the emission of a finally block. |
| 730 | class FinallyInfo { |
| 731 | /// Where the catchall's edge through the cleanup should go. |
| 732 | JumpDest RethrowDest; |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 733 | |
John McCall | d768e9d | 2011-06-22 02:32:12 +0000 | [diff] [blame] | 734 | /// A function to call to enter the catch. |
| 735 | llvm::Constant *BeginCatchFn; |
| 736 | |
| 737 | /// An i1 variable indicating whether or not the @finally is |
| 738 | /// running for an exception. |
| 739 | llvm::AllocaInst *ForEHVar; |
| 740 | |
| 741 | /// An i8* variable into which the exception pointer to rethrow |
| 742 | /// has been saved. |
| 743 | llvm::AllocaInst *SavedExnVar; |
| 744 | |
| 745 | public: |
| 746 | void enter(CodeGenFunction &CGF, const Stmt *Finally, |
| 747 | llvm::Constant *beginCatchFn, llvm::Constant *endCatchFn, |
| 748 | llvm::Constant *rethrowFn); |
| 749 | void exit(CodeGenFunction &CGF); |
| 750 | }; |
Mike Stump | d88ea56 | 2009-12-09 03:35:49 +0000 | [diff] [blame] | 751 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 752 | /// pushFullExprCleanup - Push a cleanup to be run at the end of the |
| 753 | /// current full-expression. Safe against the possibility that |
| 754 | /// we're currently inside a conditionally-evaluated expression. |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 755 | template <class T, class A0> |
| 756 | void pushFullExprCleanup(CleanupKind kind, A0 a0) { |
| 757 | // If we're not in a conditional branch, or if none of the |
| 758 | // arguments requires saving, then use the unconditional cleanup. |
John McCall | c4a1a84 | 2011-07-12 00:15:30 +0000 | [diff] [blame] | 759 | if (!isInConditionalBranch()) |
| 760 | return EHStack.pushCleanup<T>(kind, a0); |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 761 | |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 762 | typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 763 | |
| 764 | typedef EHScopeStack::ConditionalCleanup1<T, A0> CleanupType; |
| 765 | EHStack.pushCleanup<CleanupType>(kind, a0_saved); |
| 766 | initFullExprCleanup(); |
| 767 | } |
| 768 | |
| 769 | /// pushFullExprCleanup - Push a cleanup to be run at the end of the |
| 770 | /// current full-expression. Safe against the possibility that |
| 771 | /// we're currently inside a conditionally-evaluated expression. |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 772 | template <class T, class A0, class A1> |
| 773 | void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1) { |
| 774 | // If we're not in a conditional branch, or if none of the |
| 775 | // arguments requires saving, then use the unconditional cleanup. |
John McCall | c4a1a84 | 2011-07-12 00:15:30 +0000 | [diff] [blame] | 776 | if (!isInConditionalBranch()) |
| 777 | return EHStack.pushCleanup<T>(kind, a0, a1); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 778 | |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 779 | typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); |
| 780 | typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 781 | |
| 782 | typedef EHScopeStack::ConditionalCleanup2<T, A0, A1> CleanupType; |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 783 | EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved); |
| 784 | initFullExprCleanup(); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 785 | } |
| 786 | |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 787 | /// pushFullExprCleanup - Push a cleanup to be run at the end of the |
| 788 | /// current full-expression. Safe against the possibility that |
| 789 | /// we're currently inside a conditionally-evaluated expression. |
| 790 | template <class T, class A0, class A1, class A2> |
| 791 | void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1, A2 a2) { |
| 792 | // If we're not in a conditional branch, or if none of the |
| 793 | // arguments requires saving, then use the unconditional cleanup. |
| 794 | if (!isInConditionalBranch()) { |
John McCall | c4a1a84 | 2011-07-12 00:15:30 +0000 | [diff] [blame] | 795 | return EHStack.pushCleanup<T>(kind, a0, a1, a2); |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 796 | } |
| 797 | |
| 798 | typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); |
| 799 | typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); |
| 800 | typename DominatingValue<A2>::saved_type a2_saved = saveValueInCond(a2); |
| 801 | |
| 802 | typedef EHScopeStack::ConditionalCleanup3<T, A0, A1, A2> CleanupType; |
| 803 | EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved, a2_saved); |
| 804 | initFullExprCleanup(); |
| 805 | } |
| 806 | |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 807 | /// pushFullExprCleanup - Push a cleanup to be run at the end of the |
| 808 | /// current full-expression. Safe against the possibility that |
| 809 | /// we're currently inside a conditionally-evaluated expression. |
| 810 | template <class T, class A0, class A1, class A2, class A3> |
| 811 | void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1, A2 a2, A3 a3) { |
| 812 | // If we're not in a conditional branch, or if none of the |
| 813 | // arguments requires saving, then use the unconditional cleanup. |
| 814 | if (!isInConditionalBranch()) { |
| 815 | return EHStack.pushCleanup<T>(kind, a0, a1, a2, a3); |
| 816 | } |
| 817 | |
| 818 | typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); |
| 819 | typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); |
| 820 | typename DominatingValue<A2>::saved_type a2_saved = saveValueInCond(a2); |
| 821 | typename DominatingValue<A3>::saved_type a3_saved = saveValueInCond(a3); |
| 822 | |
| 823 | typedef EHScopeStack::ConditionalCleanup4<T, A0, A1, A2, A3> CleanupType; |
| 824 | EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved, |
| 825 | a2_saved, a3_saved); |
| 826 | initFullExprCleanup(); |
| 827 | } |
| 828 | |
John McCall | 6f103ba | 2011-11-10 10:43:54 +0000 | [diff] [blame] | 829 | /// Set up the last cleaup that was pushed as a conditional |
| 830 | /// full-expression cleanup. |
| 831 | void initFullExprCleanup(); |
| 832 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 833 | /// PushDestructorCleanup - Push a cleanup to call the |
| 834 | /// complete-object destructor of an object of the given type at the |
| 835 | /// given address. Does nothing if T is not a C++ class type with a |
| 836 | /// non-trivial destructor. |
| 837 | void PushDestructorCleanup(QualType T, llvm::Value *Addr); |
| 838 | |
John McCall | 81407d4 | 2010-07-21 06:29:51 +0000 | [diff] [blame] | 839 | /// PushDestructorCleanup - Push a cleanup to call the |
| 840 | /// complete-object variant of the given destructor on the object at |
| 841 | /// the given address. |
| 842 | void PushDestructorCleanup(const CXXDestructorDecl *Dtor, |
| 843 | llvm::Value *Addr); |
| 844 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 845 | /// PopCleanupBlock - Will pop the cleanup entry on the stack and |
| 846 | /// process all branch fixups. |
Adrian Prantl | 1c3db76 | 2013-05-16 00:41:26 +0000 | [diff] [blame] | 847 | void PopCleanupBlock(bool FallThroughIsBranchThrough = false); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 848 | |
John McCall | 7d8647f | 2010-09-14 07:57:04 +0000 | [diff] [blame] | 849 | /// DeactivateCleanupBlock - Deactivates the given cleanup block. |
| 850 | /// The block cannot be reactivated. Pops it if it's the top of the |
| 851 | /// stack. |
John McCall | 6f103ba | 2011-11-10 10:43:54 +0000 | [diff] [blame] | 852 | /// |
| 853 | /// \param DominatingIP - An instruction which is known to |
| 854 | /// dominate the current IP (if set) and which lies along |
| 855 | /// all paths of execution between the current IP and the |
| 856 | /// the point at which the cleanup comes into scope. |
| 857 | void DeactivateCleanupBlock(EHScopeStack::stable_iterator Cleanup, |
| 858 | llvm::Instruction *DominatingIP); |
John McCall | 7d8647f | 2010-09-14 07:57:04 +0000 | [diff] [blame] | 859 | |
| 860 | /// ActivateCleanupBlock - Activates an initially-inactive cleanup. |
| 861 | /// Cannot be used to resurrect a deactivated cleanup. |
John McCall | 6f103ba | 2011-11-10 10:43:54 +0000 | [diff] [blame] | 862 | /// |
| 863 | /// \param DominatingIP - An instruction which is known to |
| 864 | /// dominate the current IP (if set) and which lies along |
| 865 | /// all paths of execution between the current IP and the |
| 866 | /// the point at which the cleanup comes into scope. |
| 867 | void ActivateCleanupBlock(EHScopeStack::stable_iterator Cleanup, |
| 868 | llvm::Instruction *DominatingIP); |
John McCall | cd2d2b7 | 2010-08-13 21:20:51 +0000 | [diff] [blame] | 869 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 870 | /// \brief Enters a new scope for capturing cleanups, all of which |
| 871 | /// will be executed once the scope is exited. |
| 872 | class RunCleanupsScope { |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 873 | EHScopeStack::stable_iterator CleanupStackDepth; |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 874 | bool OldDidCallStackSave; |
John McCall | ed38313 | 2013-03-01 01:24:35 +0000 | [diff] [blame] | 875 | protected: |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 876 | bool PerformCleanup; |
John McCall | ed38313 | 2013-03-01 01:24:35 +0000 | [diff] [blame] | 877 | private: |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 878 | |
Dmitri Gribenko | f56faa0 | 2012-09-15 20:20:27 +0000 | [diff] [blame] | 879 | RunCleanupsScope(const RunCleanupsScope &) LLVM_DELETED_FUNCTION; |
| 880 | void operator=(const RunCleanupsScope &) LLVM_DELETED_FUNCTION; |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 881 | |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 882 | protected: |
| 883 | CodeGenFunction& CGF; |
Will Dietz | 4f45bc0 | 2013-01-18 11:30:38 +0000 | [diff] [blame] | 884 | |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 885 | public: |
| 886 | /// \brief Enter a new cleanup scope. |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 887 | explicit RunCleanupsScope(CodeGenFunction &CGF) |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 888 | : PerformCleanup(true), CGF(CGF) |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 889 | { |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 890 | CleanupStackDepth = CGF.EHStack.stable_begin(); |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 891 | OldDidCallStackSave = CGF.DidCallStackSave; |
Argyrios Kyrtzidis | 4ada2ca | 2010-09-14 00:42:34 +0000 | [diff] [blame] | 892 | CGF.DidCallStackSave = false; |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 893 | } |
| 894 | |
| 895 | /// \brief Exit this cleanup scope, emitting any accumulated |
| 896 | /// cleanups. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 897 | ~RunCleanupsScope() { |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 898 | if (PerformCleanup) { |
| 899 | CGF.DidCallStackSave = OldDidCallStackSave; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 900 | CGF.PopCleanupBlocks(CleanupStackDepth); |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 901 | } |
| 902 | } |
| 903 | |
| 904 | /// \brief Determine whether this scope requires any cleanups. |
| 905 | bool requiresCleanups() const { |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 906 | return CGF.EHStack.stable_begin() != CleanupStackDepth; |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 907 | } |
| 908 | |
| 909 | /// \brief Force the emission of cleanups now, instead of waiting |
| 910 | /// until this object is destroyed. |
| 911 | void ForceCleanup() { |
| 912 | assert(PerformCleanup && "Already forced cleanup"); |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 913 | CGF.DidCallStackSave = OldDidCallStackSave; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 914 | CGF.PopCleanupBlocks(CleanupStackDepth); |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 915 | PerformCleanup = false; |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 916 | } |
| 917 | }; |
| 918 | |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 919 | class LexicalScope: protected RunCleanupsScope { |
| 920 | SourceRange Range; |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 921 | SmallVector<const LabelDecl*, 4> Labels; |
| 922 | LexicalScope *ParentScope; |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 923 | |
Dmitri Gribenko | f56faa0 | 2012-09-15 20:20:27 +0000 | [diff] [blame] | 924 | LexicalScope(const LexicalScope &) LLVM_DELETED_FUNCTION; |
| 925 | void operator=(const LexicalScope &) LLVM_DELETED_FUNCTION; |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 926 | |
| 927 | public: |
| 928 | /// \brief Enter a new cleanup scope. |
| 929 | explicit LexicalScope(CodeGenFunction &CGF, SourceRange Range) |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 930 | : RunCleanupsScope(CGF), Range(Range), ParentScope(CGF.CurLexicalScope) { |
| 931 | CGF.CurLexicalScope = this; |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 932 | if (CGDebugInfo *DI = CGF.getDebugInfo()) |
| 933 | DI->EmitLexicalBlockStart(CGF.Builder, Range.getBegin()); |
| 934 | } |
| 935 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 936 | void addLabel(const LabelDecl *label) { |
| 937 | assert(PerformCleanup && "adding label to dead scope?"); |
| 938 | Labels.push_back(label); |
| 939 | } |
| 940 | |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 941 | /// \brief Exit this cleanup scope, emitting any accumulated |
| 942 | /// cleanups. |
| 943 | ~LexicalScope() { |
Adrian Prantl | efb72ad | 2013-04-01 19:02:06 +0000 | [diff] [blame] | 944 | if (CGDebugInfo *DI = CGF.getDebugInfo()) |
| 945 | DI->EmitLexicalBlockEnd(CGF.Builder, Range.getEnd()); |
| 946 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 947 | // If we should perform a cleanup, force them now. Note that |
| 948 | // this ends the cleanup scope before rescoping any labels. |
| 949 | if (PerformCleanup) ForceCleanup(); |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 950 | } |
| 951 | |
| 952 | /// \brief Force the emission of cleanups now, instead of waiting |
| 953 | /// until this object is destroyed. |
| 954 | void ForceCleanup() { |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 955 | CGF.CurLexicalScope = ParentScope; |
Adrian Prantl | efb72ad | 2013-04-01 19:02:06 +0000 | [diff] [blame] | 956 | RunCleanupsScope::ForceCleanup(); |
| 957 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 958 | if (!Labels.empty()) |
| 959 | rescopeLabels(); |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 960 | } |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 961 | |
| 962 | void rescopeLabels(); |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 963 | }; |
| 964 | |
Anders Carlsson | 44ec82b | 2010-03-30 03:14:41 +0000 | [diff] [blame] | 965 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 966 | /// PopCleanupBlocks - Takes the old cleanup stack size and emits |
| 967 | /// the cleanup blocks that have been added. |
Adrian Prantl | 1c3db76 | 2013-05-16 00:41:26 +0000 | [diff] [blame] | 968 | void PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize); |
Anders Carlsson | 44ec82b | 2010-03-30 03:14:41 +0000 | [diff] [blame] | 969 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 970 | void ResolveBranchFixups(llvm::BasicBlock *Target); |
| 971 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 972 | /// The given basic block lies in the current EH scope, but may be a |
| 973 | /// target of a potentially scope-crossing jump; get a stable handle |
| 974 | /// to which we can perform this jump later. |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 975 | JumpDest getJumpDestInCurrentScope(llvm::BasicBlock *Target) { |
John McCall | 413e677 | 2010-07-28 01:07:35 +0000 | [diff] [blame] | 976 | return JumpDest(Target, |
| 977 | EHStack.getInnermostNormalCleanup(), |
| 978 | NextCleanupDestIndex++); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 979 | } |
Anders Carlsson | c71c845 | 2009-02-07 23:50:39 +0000 | [diff] [blame] | 980 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 981 | /// The given basic block lies in the current EH scope, but may be a |
| 982 | /// target of a potentially scope-crossing jump; get a stable handle |
| 983 | /// to which we can perform this jump later. |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 984 | JumpDest getJumpDestInCurrentScope(StringRef Name = StringRef()) { |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 985 | return getJumpDestInCurrentScope(createBasicBlock(Name)); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 986 | } |
| 987 | |
| 988 | /// EmitBranchThroughCleanup - Emit a branch from the current insert |
| 989 | /// block through the normal cleanup handling code (if any) and then |
| 990 | /// on to \arg Dest. |
| 991 | void EmitBranchThroughCleanup(JumpDest Dest); |
Chris Lattner | b11f919 | 2011-04-17 00:54:30 +0000 | [diff] [blame] | 992 | |
| 993 | /// isObviouslyBranchWithoutCleanups - Return true if a branch to the |
| 994 | /// specified destination obviously has no cleanups to run. 'false' is always |
| 995 | /// a conservatively correct answer for this method. |
| 996 | bool isObviouslyBranchWithoutCleanups(JumpDest Dest) const; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 997 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 998 | /// popCatchScope - Pops the catch scope at the top of the EHScope |
| 999 | /// stack, emitting any required code (other than the catch handlers |
| 1000 | /// themselves). |
| 1001 | void popCatchScope(); |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 1002 | |
David Chisnall | c686004 | 2012-11-07 16:50:40 +0000 | [diff] [blame] | 1003 | llvm::BasicBlock *getEHResumeBlock(bool isCleanup); |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 1004 | llvm::BasicBlock *getEHDispatchBlock(EHScopeStack::stable_iterator scope); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1005 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 1006 | /// An object to manage conditionally-evaluated expressions. |
| 1007 | class ConditionalEvaluation { |
| 1008 | llvm::BasicBlock *StartBB; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1009 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 1010 | public: |
| 1011 | ConditionalEvaluation(CodeGenFunction &CGF) |
| 1012 | : StartBB(CGF.Builder.GetInsertBlock()) {} |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1013 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 1014 | void begin(CodeGenFunction &CGF) { |
| 1015 | assert(CGF.OutermostConditional != this); |
| 1016 | if (!CGF.OutermostConditional) |
| 1017 | CGF.OutermostConditional = this; |
| 1018 | } |
| 1019 | |
| 1020 | void end(CodeGenFunction &CGF) { |
| 1021 | assert(CGF.OutermostConditional != 0); |
| 1022 | if (CGF.OutermostConditional == this) |
| 1023 | CGF.OutermostConditional = 0; |
| 1024 | } |
| 1025 | |
| 1026 | /// Returns a block which will be executed prior to each |
| 1027 | /// evaluation of the conditional code. |
| 1028 | llvm::BasicBlock *getStartingBlock() const { |
| 1029 | return StartBB; |
| 1030 | } |
| 1031 | }; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1032 | |
John McCall | 3019c44 | 2010-09-17 00:50:28 +0000 | [diff] [blame] | 1033 | /// isInConditionalBranch - Return true if we're currently emitting |
| 1034 | /// one branch or the other of a conditional expression. |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 1035 | bool isInConditionalBranch() const { return OutermostConditional != 0; } |
| 1036 | |
John McCall | 6f103ba | 2011-11-10 10:43:54 +0000 | [diff] [blame] | 1037 | void setBeforeOutermostConditional(llvm::Value *value, llvm::Value *addr) { |
| 1038 | assert(isInConditionalBranch()); |
| 1039 | llvm::BasicBlock *block = OutermostConditional->getStartingBlock(); |
| 1040 | new llvm::StoreInst(value, addr, &block->back()); |
| 1041 | } |
| 1042 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 1043 | /// An RAII object to record that we're evaluating a statement |
| 1044 | /// expression. |
| 1045 | class StmtExprEvaluation { |
| 1046 | CodeGenFunction &CGF; |
| 1047 | |
| 1048 | /// We have to save the outermost conditional: cleanups in a |
| 1049 | /// statement expression aren't conditional just because the |
| 1050 | /// StmtExpr is. |
| 1051 | ConditionalEvaluation *SavedOutermostConditional; |
| 1052 | |
| 1053 | public: |
| 1054 | StmtExprEvaluation(CodeGenFunction &CGF) |
| 1055 | : CGF(CGF), SavedOutermostConditional(CGF.OutermostConditional) { |
| 1056 | CGF.OutermostConditional = 0; |
| 1057 | } |
| 1058 | |
| 1059 | ~StmtExprEvaluation() { |
| 1060 | CGF.OutermostConditional = SavedOutermostConditional; |
| 1061 | CGF.EnsureInsertPoint(); |
| 1062 | } |
| 1063 | }; |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1064 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1065 | /// An object which temporarily prevents a value from being |
| 1066 | /// destroyed by aggressive peephole optimizations that assume that |
| 1067 | /// all uses of a value have been realized in the IR. |
| 1068 | class PeepholeProtection { |
| 1069 | llvm::Instruction *Inst; |
| 1070 | friend class CodeGenFunction; |
| 1071 | |
| 1072 | public: |
| 1073 | PeepholeProtection() : Inst(0) {} |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1074 | }; |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1075 | |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1076 | /// A non-RAII class containing all the information about a bound |
| 1077 | /// opaque value. OpaqueValueMapping, below, is a RAII wrapper for |
| 1078 | /// this which makes individual mappings very simple; using this |
| 1079 | /// class directly is useful when you have a variable number of |
| 1080 | /// opaque values or don't want the RAII functionality for some |
| 1081 | /// reason. |
| 1082 | class OpaqueValueMappingData { |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1083 | const OpaqueValueExpr *OpaqueValue; |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1084 | bool BoundLValue; |
| 1085 | CodeGenFunction::PeepholeProtection Protection; |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1086 | |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1087 | OpaqueValueMappingData(const OpaqueValueExpr *ov, |
| 1088 | bool boundLValue) |
| 1089 | : OpaqueValue(ov), BoundLValue(boundLValue) {} |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1090 | public: |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1091 | OpaqueValueMappingData() : OpaqueValue(0) {} |
| 1092 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1093 | static bool shouldBindAsLValue(const Expr *expr) { |
John McCall | a5493f8 | 2011-11-08 22:54:08 +0000 | [diff] [blame] | 1094 | // gl-values should be bound as l-values for obvious reasons. |
| 1095 | // Records should be bound as l-values because IR generation |
| 1096 | // always keeps them in memory. Expressions of function type |
| 1097 | // act exactly like l-values but are formally required to be |
| 1098 | // r-values in C. |
| 1099 | return expr->isGLValue() || |
| 1100 | expr->getType()->isRecordType() || |
| 1101 | expr->getType()->isFunctionType(); |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1102 | } |
| 1103 | |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1104 | static OpaqueValueMappingData bind(CodeGenFunction &CGF, |
| 1105 | const OpaqueValueExpr *ov, |
| 1106 | const Expr *e) { |
| 1107 | if (shouldBindAsLValue(ov)) |
| 1108 | return bind(CGF, ov, CGF.EmitLValue(e)); |
| 1109 | return bind(CGF, ov, CGF.EmitAnyExpr(e)); |
| 1110 | } |
| 1111 | |
| 1112 | static OpaqueValueMappingData bind(CodeGenFunction &CGF, |
| 1113 | const OpaqueValueExpr *ov, |
| 1114 | const LValue &lv) { |
| 1115 | assert(shouldBindAsLValue(ov)); |
| 1116 | CGF.OpaqueLValues.insert(std::make_pair(ov, lv)); |
| 1117 | return OpaqueValueMappingData(ov, true); |
| 1118 | } |
| 1119 | |
| 1120 | static OpaqueValueMappingData bind(CodeGenFunction &CGF, |
| 1121 | const OpaqueValueExpr *ov, |
| 1122 | const RValue &rv) { |
| 1123 | assert(!shouldBindAsLValue(ov)); |
| 1124 | CGF.OpaqueRValues.insert(std::make_pair(ov, rv)); |
| 1125 | |
| 1126 | OpaqueValueMappingData data(ov, false); |
| 1127 | |
| 1128 | // Work around an extremely aggressive peephole optimization in |
| 1129 | // EmitScalarConversion which assumes that all other uses of a |
| 1130 | // value are extant. |
| 1131 | data.Protection = CGF.protectFromPeepholes(rv); |
| 1132 | |
| 1133 | return data; |
| 1134 | } |
| 1135 | |
| 1136 | bool isValid() const { return OpaqueValue != 0; } |
| 1137 | void clear() { OpaqueValue = 0; } |
| 1138 | |
| 1139 | void unbind(CodeGenFunction &CGF) { |
| 1140 | assert(OpaqueValue && "no data to unbind!"); |
| 1141 | |
| 1142 | if (BoundLValue) { |
| 1143 | CGF.OpaqueLValues.erase(OpaqueValue); |
| 1144 | } else { |
| 1145 | CGF.OpaqueRValues.erase(OpaqueValue); |
| 1146 | CGF.unprotectFromPeepholes(Protection); |
| 1147 | } |
| 1148 | } |
| 1149 | }; |
| 1150 | |
| 1151 | /// An RAII object to set (and then clear) a mapping for an OpaqueValueExpr. |
| 1152 | class OpaqueValueMapping { |
| 1153 | CodeGenFunction &CGF; |
| 1154 | OpaqueValueMappingData Data; |
| 1155 | |
| 1156 | public: |
| 1157 | static bool shouldBindAsLValue(const Expr *expr) { |
| 1158 | return OpaqueValueMappingData::shouldBindAsLValue(expr); |
| 1159 | } |
| 1160 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1161 | /// Build the opaque value mapping for the given conditional |
| 1162 | /// operator if it's the GNU ?: extension. This is a common |
| 1163 | /// enough pattern that the convenience operator is really |
| 1164 | /// helpful. |
| 1165 | /// |
| 1166 | OpaqueValueMapping(CodeGenFunction &CGF, |
| 1167 | const AbstractConditionalOperator *op) : CGF(CGF) { |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1168 | if (isa<ConditionalOperator>(op)) |
| 1169 | // Leave Data empty. |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1170 | return; |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1171 | |
| 1172 | const BinaryConditionalOperator *e = cast<BinaryConditionalOperator>(op); |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1173 | Data = OpaqueValueMappingData::bind(CGF, e->getOpaqueValue(), |
| 1174 | e->getCommon()); |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1175 | } |
| 1176 | |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1177 | OpaqueValueMapping(CodeGenFunction &CGF, |
| 1178 | const OpaqueValueExpr *opaqueValue, |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1179 | LValue lvalue) |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1180 | : CGF(CGF), Data(OpaqueValueMappingData::bind(CGF, opaqueValue, lvalue)) { |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1181 | } |
| 1182 | |
| 1183 | OpaqueValueMapping(CodeGenFunction &CGF, |
| 1184 | const OpaqueValueExpr *opaqueValue, |
| 1185 | RValue rvalue) |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1186 | : CGF(CGF), Data(OpaqueValueMappingData::bind(CGF, opaqueValue, rvalue)) { |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1187 | } |
| 1188 | |
| 1189 | void pop() { |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1190 | Data.unbind(CGF); |
| 1191 | Data.clear(); |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1192 | } |
| 1193 | |
| 1194 | ~OpaqueValueMapping() { |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1195 | if (Data.isValid()) Data.unbind(CGF); |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1196 | } |
| 1197 | }; |
Fariborz Jahanian | e220455 | 2010-11-16 19:29:39 +0000 | [diff] [blame] | 1198 | |
| 1199 | /// getByrefValueFieldNumber - Given a declaration, returns the LLVM field |
| 1200 | /// number that holds the value. |
| 1201 | unsigned getByRefValueLLVMField(const ValueDecl *VD) const; |
Fariborz Jahanian | 52a80e1 | 2011-01-26 23:08:27 +0000 | [diff] [blame] | 1202 | |
| 1203 | /// BuildBlockByrefAddress - Computes address location of the |
| 1204 | /// variable which is declared as __block. |
| 1205 | llvm::Value *BuildBlockByrefAddress(llvm::Value *BaseAddr, |
| 1206 | const VarDecl *V); |
Chris Lattner | 7f02f72 | 2007-08-24 05:35:26 +0000 | [diff] [blame] | 1207 | private: |
Chris Lattner | d9becd1 | 2009-10-28 23:59:40 +0000 | [diff] [blame] | 1208 | CGDebugInfo *DebugInfo; |
Devang Patel | aa11289 | 2011-03-07 18:45:56 +0000 | [diff] [blame] | 1209 | bool DisableDebugInfo; |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 1210 | |
Manman Ren | 63fd408 | 2013-03-20 16:59:38 +0000 | [diff] [blame] | 1211 | /// If the current function returns 'this', use the field to keep track of |
| 1212 | /// the callee that returns 'this'. |
| 1213 | llvm::Value *CalleeWithThisReturn; |
| 1214 | |
John McCall | 93c332a | 2011-05-28 21:13:02 +0000 | [diff] [blame] | 1215 | /// DidCallStackSave - Whether llvm.stacksave has been called. Used to avoid |
| 1216 | /// calling llvm.stacksave for multiple VLAs in the same scope. |
| 1217 | bool DidCallStackSave; |
| 1218 | |
Mike Stump | f71d232 | 2009-11-30 20:08:49 +0000 | [diff] [blame] | 1219 | /// IndirectBranch - The first time an indirect goto is seen we create a block |
| 1220 | /// with an indirect branch. Every time we see the address of a label taken, |
| 1221 | /// we add the label to the indirect goto. Every subsequent indirect goto is |
| 1222 | /// codegen'd as a jump to the IndirectBranch's basic block. |
Chris Lattner | d9becd1 | 2009-10-28 23:59:40 +0000 | [diff] [blame] | 1223 | llvm::IndirectBrInst *IndirectBranch; |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 1224 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1225 | /// LocalDeclMap - This keeps track of the LLVM allocas or globals for local C |
| 1226 | /// decls. |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 1227 | typedef llvm::DenseMap<const Decl*, llvm::Value*> DeclMapTy; |
| 1228 | DeclMapTy LocalDeclMap; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1229 | |
| 1230 | /// LabelMap - This keeps track of the LLVM basic block for each C label. |
Chris Lattner | ad8dcf4 | 2011-02-17 07:39:24 +0000 | [diff] [blame] | 1231 | llvm::DenseMap<const LabelDecl*, JumpDest> LabelMap; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1232 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1233 | // BreakContinueStack - This keeps track of where break and continue |
Anders Carlsson | e4b6d34 | 2009-02-10 05:52:02 +0000 | [diff] [blame] | 1234 | // statements should jump to. |
Chris Lattner | da13870 | 2007-07-16 21:28:45 +0000 | [diff] [blame] | 1235 | struct BreakContinue { |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1236 | BreakContinue(JumpDest Break, JumpDest Continue) |
| 1237 | : BreakBlock(Break), ContinueBlock(Continue) {} |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1238 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1239 | JumpDest BreakBlock; |
| 1240 | JumpDest ContinueBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1241 | }; |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 1242 | SmallVector<BreakContinue, 8> BreakContinueStack; |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 1243 | |
Zhongxing Xu | 170fd49 | 2012-01-14 09:08:15 +0000 | [diff] [blame] | 1244 | /// SwitchInsn - This is nearest current switch instruction. It is null if |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1245 | /// current context is not in a switch. |
Devang Patel | 51b09f2 | 2007-10-04 23:45:31 +0000 | [diff] [blame] | 1246 | llvm::SwitchInst *SwitchInsn; |
| 1247 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1248 | /// CaseRangeBlock - This block holds if condition check for last case |
Devang Patel | 80fd5f9 | 2007-10-09 17:08:50 +0000 | [diff] [blame] | 1249 | /// statement range in current switch instruction. |
Devang Patel | c049e4f | 2007-10-08 20:57:48 +0000 | [diff] [blame] | 1250 | llvm::BasicBlock *CaseRangeBlock; |
| 1251 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1252 | /// OpaqueLValues - Keeps track of the current set of opaque value |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1253 | /// expressions. |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1254 | llvm::DenseMap<const OpaqueValueExpr *, LValue> OpaqueLValues; |
| 1255 | llvm::DenseMap<const OpaqueValueExpr *, RValue> OpaqueRValues; |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1256 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1257 | // VLASizeMap - This keeps track of the associated size for each VLA type. |
Eli Friedman | bbed6b9 | 2009-08-15 02:50:32 +0000 | [diff] [blame] | 1258 | // We track this by the size expression rather than the type itself because |
| 1259 | // in certain situations, like a const qualifier applied to an VLA typedef, |
| 1260 | // multiple VLA types can share the same size expression. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1261 | // FIXME: Maybe this could be a stack of maps that is pushed/popped as we |
| 1262 | // enter/leave scopes. |
Eli Friedman | bbed6b9 | 2009-08-15 02:50:32 +0000 | [diff] [blame] | 1263 | llvm::DenseMap<const Expr*, llvm::Value*> VLASizeMap; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1264 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1265 | /// A block containing a single 'unreachable' instruction. Created |
| 1266 | /// lazily by getUnreachableBlock(). |
| 1267 | llvm::BasicBlock *UnreachableBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1268 | |
Adrian Prantl | d072e59 | 2013-05-03 20:11:48 +0000 | [diff] [blame] | 1269 | /// Counts of the number return expressions in the function. |
| 1270 | unsigned NumReturnExprs; |
Adrian Prantl | fa6b079 | 2013-05-02 17:30:20 +0000 | [diff] [blame] | 1271 | |
| 1272 | /// Count the number of simple (constant) return expressions in the function. |
| 1273 | unsigned NumSimpleReturnExprs; |
| 1274 | |
Adrian Prantl | d072e59 | 2013-05-03 20:11:48 +0000 | [diff] [blame] | 1275 | /// The last regular (non-return) debug location (breakpoint) in the function. |
| 1276 | SourceLocation LastStopPoint; |
Adrian Prantl | fa6b079 | 2013-05-02 17:30:20 +0000 | [diff] [blame] | 1277 | |
Richard Smith | c3bf52c | 2013-04-20 22:23:05 +0000 | [diff] [blame] | 1278 | public: |
| 1279 | /// A scope within which we are constructing the fields of an object which |
| 1280 | /// might use a CXXDefaultInitExpr. This stashes away a 'this' value to use |
| 1281 | /// if we need to evaluate a CXXDefaultInitExpr within the evaluation. |
| 1282 | class FieldConstructionScope { |
| 1283 | public: |
| 1284 | FieldConstructionScope(CodeGenFunction &CGF, llvm::Value *This) |
| 1285 | : CGF(CGF), OldCXXDefaultInitExprThis(CGF.CXXDefaultInitExprThis) { |
| 1286 | CGF.CXXDefaultInitExprThis = This; |
| 1287 | } |
| 1288 | ~FieldConstructionScope() { |
| 1289 | CGF.CXXDefaultInitExprThis = OldCXXDefaultInitExprThis; |
| 1290 | } |
| 1291 | |
| 1292 | private: |
| 1293 | CodeGenFunction &CGF; |
| 1294 | llvm::Value *OldCXXDefaultInitExprThis; |
| 1295 | }; |
| 1296 | |
| 1297 | /// The scope of a CXXDefaultInitExpr. Within this scope, the value of 'this' |
| 1298 | /// is overridden to be the object under construction. |
| 1299 | class CXXDefaultInitExprScope { |
| 1300 | public: |
| 1301 | CXXDefaultInitExprScope(CodeGenFunction &CGF) |
| 1302 | : CGF(CGF), OldCXXThisValue(CGF.CXXThisValue) { |
| 1303 | CGF.CXXThisValue = CGF.CXXDefaultInitExprThis; |
| 1304 | } |
| 1305 | ~CXXDefaultInitExprScope() { |
| 1306 | CGF.CXXThisValue = OldCXXThisValue; |
| 1307 | } |
| 1308 | |
| 1309 | public: |
| 1310 | CodeGenFunction &CGF; |
| 1311 | llvm::Value *OldCXXThisValue; |
| 1312 | }; |
| 1313 | |
| 1314 | private: |
Anders Carlsson | f6c56e2 | 2009-11-25 03:15:49 +0000 | [diff] [blame] | 1315 | /// CXXThisDecl - When generating code for a C++ member function, |
| 1316 | /// this will hold the implicit 'this' declaration. |
Eli Friedman | cec5ebd | 2012-02-11 02:57:39 +0000 | [diff] [blame] | 1317 | ImplicitParamDecl *CXXABIThisDecl; |
| 1318 | llvm::Value *CXXABIThisValue; |
John McCall | 2504941 | 2010-02-16 22:04:33 +0000 | [diff] [blame] | 1319 | llvm::Value *CXXThisValue; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1320 | |
Richard Smith | c3bf52c | 2013-04-20 22:23:05 +0000 | [diff] [blame] | 1321 | /// The value of 'this' to use when evaluating CXXDefaultInitExprs within |
| 1322 | /// this expression. |
| 1323 | llvm::Value *CXXDefaultInitExprThis; |
| 1324 | |
Timur Iskhodzhanov | 59660c2 | 2013-02-13 08:37:51 +0000 | [diff] [blame] | 1325 | /// CXXStructorImplicitParamDecl - When generating code for a constructor or |
| 1326 | /// destructor, this will hold the implicit argument (e.g. VTT). |
| 1327 | ImplicitParamDecl *CXXStructorImplicitParamDecl; |
| 1328 | llvm::Value *CXXStructorImplicitParamValue; |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1329 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 1330 | /// OutermostConditional - Points to the outermost active |
| 1331 | /// conditional control. This is used so that we know if a |
| 1332 | /// temporary should be destroyed conditionally. |
| 1333 | ConditionalEvaluation *OutermostConditional; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1334 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 1335 | /// The current lexical scope. |
| 1336 | LexicalScope *CurLexicalScope; |
Anders Carlsson | 7dfa407 | 2009-09-12 02:14:24 +0000 | [diff] [blame] | 1337 | |
Adrian Prantl | 1c3db76 | 2013-05-16 00:41:26 +0000 | [diff] [blame] | 1338 | /// The current source location that should be used for exception |
| 1339 | /// handling code. |
| 1340 | SourceLocation CurEHLocation; |
| 1341 | |
Anders Carlsson | 7dfa407 | 2009-09-12 02:14:24 +0000 | [diff] [blame] | 1342 | /// ByrefValueInfoMap - For each __block variable, contains a pair of the LLVM |
| 1343 | /// type as well as the field number that contains the actual data. |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 1344 | llvm::DenseMap<const ValueDecl *, std::pair<llvm::Type *, |
Anders Carlsson | 7dfa407 | 2009-09-12 02:14:24 +0000 | [diff] [blame] | 1345 | unsigned> > ByRefValueInfo; |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1346 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1347 | llvm::BasicBlock *TerminateLandingPad; |
Mike Stump | 182f383 | 2009-12-10 00:02:42 +0000 | [diff] [blame] | 1348 | llvm::BasicBlock *TerminateHandler; |
Chris Lattner | 83252dc | 2010-07-20 21:07:09 +0000 | [diff] [blame] | 1349 | llvm::BasicBlock *TrapBB; |
Eli Friedman | 9406705 | 2009-12-10 02:21:21 +0000 | [diff] [blame] | 1350 | |
Tanya Lattner | 0df579e | 2012-07-09 22:06:01 +0000 | [diff] [blame] | 1351 | /// Add a kernel metadata node to the named metadata node 'opencl.kernels'. |
| 1352 | /// In the kernel metadata node, reference the kernel function and metadata |
| 1353 | /// nodes for its optional attribute qualifiers (OpenCL 1.1 6.7.2): |
Joey Gouly | 37453b9 | 2013-03-08 09:42:32 +0000 | [diff] [blame] | 1354 | /// - A node for the vec_type_hint(<type>) qualifier contains string |
| 1355 | /// "vec_type_hint", an undefined value of the <type> data type, |
| 1356 | /// and a Boolean that is true if the <type> is integer and signed. |
Tanya Lattner | 0df579e | 2012-07-09 22:06:01 +0000 | [diff] [blame] | 1357 | /// - A node for the work_group_size_hint(X,Y,Z) qualifier contains string |
| 1358 | /// "work_group_size_hint", and three 32-bit integers X, Y and Z. |
| 1359 | /// - A node for the reqd_work_group_size(X,Y,Z) qualifier contains string |
| 1360 | /// "reqd_work_group_size", and three 32-bit integers X, Y and Z. |
| 1361 | void EmitOpenCLKernelMetadata(const FunctionDecl *FD, |
| 1362 | llvm::Function *Fn); |
| 1363 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1364 | public: |
Fariborz Jahanian | 4904bf4 | 2012-06-26 16:06:38 +0000 | [diff] [blame] | 1365 | CodeGenFunction(CodeGenModule &cgm, bool suppressNewContext=false); |
John McCall | 1a343eb | 2011-11-10 08:15:53 +0000 | [diff] [blame] | 1366 | ~CodeGenFunction(); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1367 | |
John McCall | 1e7fe75 | 2010-09-02 09:58:18 +0000 | [diff] [blame] | 1368 | CodeGenTypes &getTypes() const { return CGM.getTypes(); } |
John McCall | f2aac84 | 2011-05-15 02:34:36 +0000 | [diff] [blame] | 1369 | ASTContext &getContext() const { return CGM.getContext(); } |
Alexey Samsonov | a240df2 | 2012-10-16 07:22:28 +0000 | [diff] [blame] | 1370 | /// Returns true if DebugInfo is actually initialized. |
| 1371 | bool maybeInitializeDebugInfo() { |
| 1372 | if (CGM.getModuleDebugInfo()) { |
| 1373 | DebugInfo = CGM.getModuleDebugInfo(); |
| 1374 | return true; |
| 1375 | } |
| 1376 | return false; |
| 1377 | } |
Devang Patel | aa11289 | 2011-03-07 18:45:56 +0000 | [diff] [blame] | 1378 | CGDebugInfo *getDebugInfo() { |
| 1379 | if (DisableDebugInfo) |
| 1380 | return NULL; |
| 1381 | return DebugInfo; |
| 1382 | } |
| 1383 | void disableDebugInfo() { DisableDebugInfo = true; } |
| 1384 | void enableDebugInfo() { DisableDebugInfo = false; } |
| 1385 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 1386 | bool shouldUseFusedARCCalls() { |
| 1387 | return CGM.getCodeGenOpts().OptimizationLevel == 0; |
| 1388 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1389 | |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 1390 | const LangOptions &getLangOpts() const { return CGM.getLangOpts(); } |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1391 | |
Bill Wendling | 285cfd8 | 2011-09-19 20:31:14 +0000 | [diff] [blame] | 1392 | /// Returns a pointer to the function's exception object and selector slot, |
| 1393 | /// which is assigned in every landing pad. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1394 | llvm::Value *getExceptionSlot(); |
John McCall | 93c332a | 2011-05-28 21:13:02 +0000 | [diff] [blame] | 1395 | llvm::Value *getEHSelectorSlot(); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1396 | |
Bill Wendling | ae27059 | 2011-09-15 18:57:19 +0000 | [diff] [blame] | 1397 | /// Returns the contents of the function's exception object and selector |
| 1398 | /// slots. |
| 1399 | llvm::Value *getExceptionFromSlot(); |
| 1400 | llvm::Value *getSelectorFromSlot(); |
| 1401 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 1402 | llvm::Value *getNormalCleanupDestSlot(); |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 1403 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1404 | llvm::BasicBlock *getUnreachableBlock() { |
| 1405 | if (!UnreachableBlock) { |
| 1406 | UnreachableBlock = createBasicBlock("unreachable"); |
| 1407 | new llvm::UnreachableInst(getLLVMContext(), UnreachableBlock); |
| 1408 | } |
| 1409 | return UnreachableBlock; |
| 1410 | } |
| 1411 | |
| 1412 | llvm::BasicBlock *getInvokeDest() { |
| 1413 | if (!EHStack.requiresLandingPad()) return 0; |
| 1414 | return getInvokeDestImpl(); |
| 1415 | } |
Daniel Dunbar | 9834ffb | 2009-02-23 17:26:39 +0000 | [diff] [blame] | 1416 | |
John McCall | 64aa4b3 | 2013-04-16 22:48:15 +0000 | [diff] [blame] | 1417 | const TargetInfo &getTarget() const { return Target; } |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1418 | llvm::LLVMContext &getLLVMContext() { return CGM.getLLVMContext(); } |
Owen Anderson | 6924382 | 2009-07-13 04:10:07 +0000 | [diff] [blame] | 1419 | |
Daniel Dunbar | 9834ffb | 2009-02-23 17:26:39 +0000 | [diff] [blame] | 1420 | //===--------------------------------------------------------------------===// |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1421 | // Cleanups |
| 1422 | //===--------------------------------------------------------------------===// |
| 1423 | |
| 1424 | typedef void Destroyer(CodeGenFunction &CGF, llvm::Value *addr, QualType ty); |
| 1425 | |
John McCall | 2673c68 | 2011-07-11 08:38:19 +0000 | [diff] [blame] | 1426 | void pushIrregularPartialArrayCleanup(llvm::Value *arrayBegin, |
| 1427 | llvm::Value *arrayEndPointer, |
| 1428 | QualType elementType, |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1429 | Destroyer *destroyer); |
John McCall | 2673c68 | 2011-07-11 08:38:19 +0000 | [diff] [blame] | 1430 | void pushRegularPartialArrayCleanup(llvm::Value *arrayBegin, |
| 1431 | llvm::Value *arrayEnd, |
| 1432 | QualType elementType, |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1433 | Destroyer *destroyer); |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1434 | |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 1435 | void pushDestroy(QualType::DestructionKind dtorKind, |
| 1436 | llvm::Value *addr, QualType type); |
John McCall | 074cae0 | 2013-02-01 05:11:40 +0000 | [diff] [blame] | 1437 | void pushEHDestroy(QualType::DestructionKind dtorKind, |
| 1438 | llvm::Value *addr, QualType type); |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1439 | void pushDestroy(CleanupKind kind, llvm::Value *addr, QualType type, |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1440 | Destroyer *destroyer, bool useEHCleanupForArray); |
| 1441 | void emitDestroy(llvm::Value *addr, QualType type, Destroyer *destroyer, |
John McCall | 2673c68 | 2011-07-11 08:38:19 +0000 | [diff] [blame] | 1442 | bool useEHCleanupForArray); |
John McCall | a91f666 | 2011-07-13 03:01:35 +0000 | [diff] [blame] | 1443 | llvm::Function *generateDestroyHelper(llvm::Constant *addr, |
| 1444 | QualType type, |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1445 | Destroyer *destroyer, |
John McCall | a91f666 | 2011-07-13 03:01:35 +0000 | [diff] [blame] | 1446 | bool useEHCleanupForArray); |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1447 | void emitArrayDestroy(llvm::Value *begin, llvm::Value *end, |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1448 | QualType type, Destroyer *destroyer, |
John McCall | fbf780a | 2011-07-13 08:09:46 +0000 | [diff] [blame] | 1449 | bool checkZeroLength, bool useEHCleanup); |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1450 | |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1451 | Destroyer *getDestroyer(QualType::DestructionKind destructionKind); |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 1452 | |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1453 | /// Determines whether an EH cleanup is required to destroy a type |
| 1454 | /// with the given destruction kind. |
| 1455 | bool needsEHCleanup(QualType::DestructionKind kind) { |
| 1456 | switch (kind) { |
| 1457 | case QualType::DK_none: |
| 1458 | return false; |
| 1459 | case QualType::DK_cxx_destructor: |
| 1460 | case QualType::DK_objc_weak_lifetime: |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 1461 | return getLangOpts().Exceptions; |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1462 | case QualType::DK_objc_strong_lifetime: |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 1463 | return getLangOpts().Exceptions && |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1464 | CGM.getCodeGenOpts().ObjCAutoRefCountExceptions; |
| 1465 | } |
| 1466 | llvm_unreachable("bad destruction kind"); |
| 1467 | } |
| 1468 | |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 1469 | CleanupKind getCleanupKind(QualType::DestructionKind kind) { |
| 1470 | return (needsEHCleanup(kind) ? NormalAndEHCleanup : NormalCleanup); |
| 1471 | } |
| 1472 | |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1473 | //===--------------------------------------------------------------------===// |
Daniel Dunbar | 9834ffb | 2009-02-23 17:26:39 +0000 | [diff] [blame] | 1474 | // Objective-C |
| 1475 | //===--------------------------------------------------------------------===// |
| 1476 | |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 1477 | void GenerateObjCMethod(const ObjCMethodDecl *OMD); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 1478 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1479 | void StartObjCMethod(const ObjCMethodDecl *MD, |
Devang Patel | 8d3f897 | 2011-05-19 23:37:41 +0000 | [diff] [blame] | 1480 | const ObjCContainerDecl *CD, |
| 1481 | SourceLocation StartLoc); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 1482 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1483 | /// GenerateObjCGetter - Synthesize an Objective-C property getter function. |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 1484 | void GenerateObjCGetter(ObjCImplementationDecl *IMP, |
| 1485 | const ObjCPropertyImplDecl *PID); |
John McCall | 1e1f487 | 2011-09-13 03:34:09 +0000 | [diff] [blame] | 1486 | void generateObjCGetterBody(const ObjCImplementationDecl *classImpl, |
Fariborz Jahanian | b6e5fe3 | 2012-01-07 18:56:22 +0000 | [diff] [blame] | 1487 | const ObjCPropertyImplDecl *propImpl, |
Fariborz Jahanian | 490a52b | 2012-05-29 19:56:01 +0000 | [diff] [blame] | 1488 | const ObjCMethodDecl *GetterMothodDecl, |
Fariborz Jahanian | b6e5fe3 | 2012-01-07 18:56:22 +0000 | [diff] [blame] | 1489 | llvm::Constant *AtomicHelperFn); |
Fariborz Jahanian | 2846b97 | 2011-02-18 19:15:13 +0000 | [diff] [blame] | 1490 | |
Fariborz Jahanian | 109dfc6 | 2010-04-28 21:28:56 +0000 | [diff] [blame] | 1491 | void GenerateObjCCtorDtorMethod(ObjCImplementationDecl *IMP, |
| 1492 | ObjCMethodDecl *MD, bool ctor); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 1493 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1494 | /// GenerateObjCSetter - Synthesize an Objective-C property setter function |
| 1495 | /// for the given property. |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 1496 | void GenerateObjCSetter(ObjCImplementationDecl *IMP, |
| 1497 | const ObjCPropertyImplDecl *PID); |
John McCall | 71c758d | 2011-09-10 09:17:20 +0000 | [diff] [blame] | 1498 | void generateObjCSetterBody(const ObjCImplementationDecl *classImpl, |
Fariborz Jahanian | cd93b96 | 2012-01-06 22:33:54 +0000 | [diff] [blame] | 1499 | const ObjCPropertyImplDecl *propImpl, |
| 1500 | llvm::Constant *AtomicHelperFn); |
Fariborz Jahanian | 0b2bd47 | 2010-04-13 00:38:05 +0000 | [diff] [blame] | 1501 | bool IndirectObjCSetterArg(const CGFunctionInfo &FI); |
Fariborz Jahanian | 15bd588 | 2010-04-13 18:32:24 +0000 | [diff] [blame] | 1502 | bool IvarTypeWithAggrGCObjects(QualType Ty); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 1503 | |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 1504 | //===--------------------------------------------------------------------===// |
| 1505 | // Block Bits |
| 1506 | //===--------------------------------------------------------------------===// |
| 1507 | |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 1508 | llvm::Value *EmitBlockLiteral(const BlockExpr *); |
John McCall | 1a343eb | 2011-11-10 08:15:53 +0000 | [diff] [blame] | 1509 | llvm::Value *EmitBlockLiteral(const CGBlockInfo &Info); |
| 1510 | static void destroyBlockInfos(CGBlockInfo *info); |
Blaine Garst | 2a7eb28 | 2010-02-23 21:51:17 +0000 | [diff] [blame] | 1511 | llvm::Constant *BuildDescriptorBlockDecl(const BlockExpr *, |
Fariborz Jahanian | 89ecd41 | 2010-08-04 16:57:49 +0000 | [diff] [blame] | 1512 | const CGBlockInfo &Info, |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 1513 | llvm::StructType *, |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1514 | llvm::Constant *BlockVarLayout); |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 1515 | |
Fariborz Jahanian | 564360b | 2010-06-24 00:08:06 +0000 | [diff] [blame] | 1516 | llvm::Function *GenerateBlockFunction(GlobalDecl GD, |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 1517 | const CGBlockInfo &Info, |
Eli Friedman | 64bee65 | 2012-02-25 02:48:22 +0000 | [diff] [blame] | 1518 | const DeclMapTy &ldm, |
| 1519 | bool IsLambdaConversionToBlock); |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 1520 | |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1521 | llvm::Constant *GenerateCopyHelperFunction(const CGBlockInfo &blockInfo); |
| 1522 | llvm::Constant *GenerateDestroyHelperFunction(const CGBlockInfo &blockInfo); |
Fariborz Jahanian | 20abee6 | 2012-01-10 00:37:01 +0000 | [diff] [blame] | 1523 | llvm::Constant *GenerateObjCAtomicSetterCopyHelperFunction( |
| 1524 | const ObjCPropertyImplDecl *PID); |
| 1525 | llvm::Constant *GenerateObjCAtomicGetterCopyHelperFunction( |
| 1526 | const ObjCPropertyImplDecl *PID); |
Eli Friedman | cae40c4 | 2012-02-28 01:08:45 +0000 | [diff] [blame] | 1527 | llvm::Value *EmitBlockCopyAndAutorelease(llvm::Value *Block, QualType Ty); |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1528 | |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1529 | void BuildBlockRelease(llvm::Value *DeclPtr, BlockFieldFlags flags); |
| 1530 | |
John McCall | 5af02db | 2011-03-31 01:59:53 +0000 | [diff] [blame] | 1531 | class AutoVarEmission; |
| 1532 | |
| 1533 | void emitByrefStructureInit(const AutoVarEmission &emission); |
| 1534 | void enterByrefCleanup(const AutoVarEmission &emission); |
| 1535 | |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 1536 | llvm::Value *LoadBlockStruct() { |
| 1537 | assert(BlockPointer && "no block pointer set!"); |
| 1538 | return BlockPointer; |
| 1539 | } |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 1540 | |
John McCall | ea1471e | 2010-05-20 01:18:31 +0000 | [diff] [blame] | 1541 | void AllocateBlockCXXThisPointer(const CXXThisExpr *E); |
John McCall | f4b88a4 | 2012-03-10 09:33:50 +0000 | [diff] [blame] | 1542 | void AllocateBlockDecl(const DeclRefExpr *E); |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 1543 | llvm::Value *GetAddrOfBlockDecl(const VarDecl *var, bool ByRef); |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 1544 | llvm::Type *BuildByRefType(const VarDecl *var); |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 1545 | |
John McCall | d26bc76 | 2011-03-09 04:27:21 +0000 | [diff] [blame] | 1546 | void GenerateCode(GlobalDecl GD, llvm::Function *Fn, |
| 1547 | const CGFunctionInfo &FnInfo); |
John McCall | f5ebf9b | 2013-05-03 07:33:41 +0000 | [diff] [blame] | 1548 | void StartFunction(GlobalDecl GD, |
| 1549 | QualType RetTy, |
Daniel Dunbar | 7c08651 | 2008-09-09 23:14:03 +0000 | [diff] [blame] | 1550 | llvm::Function *Fn, |
John McCall | d26bc76 | 2011-03-09 04:27:21 +0000 | [diff] [blame] | 1551 | const CGFunctionInfo &FnInfo, |
Daniel Dunbar | 2284ac9 | 2008-10-18 18:22:23 +0000 | [diff] [blame] | 1552 | const FunctionArgList &Args, |
Tilmann Scheller | 9c6082f | 2011-03-02 21:36:49 +0000 | [diff] [blame] | 1553 | SourceLocation StartLoc); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 1554 | |
John McCall | 9fc6a77 | 2010-02-19 09:25:03 +0000 | [diff] [blame] | 1555 | void EmitConstructorBody(FunctionArgList &Args); |
| 1556 | void EmitDestructorBody(FunctionArgList &Args); |
Lang Hames | 56c00c4 | 2013-02-17 07:22:09 +0000 | [diff] [blame] | 1557 | void emitImplicitAssignmentOperatorBody(FunctionArgList &Args); |
John McCall | 9fc6a77 | 2010-02-19 09:25:03 +0000 | [diff] [blame] | 1558 | void EmitFunctionBody(FunctionArgList &Args); |
John McCall | a355e07 | 2010-02-18 03:17:58 +0000 | [diff] [blame] | 1559 | |
Eli Friedman | 64bee65 | 2012-02-25 02:48:22 +0000 | [diff] [blame] | 1560 | void EmitForwardingCallToLambda(const CXXRecordDecl *Lambda, |
| 1561 | CallArgList &CallArgs); |
Eli Friedman | bd89f8c | 2012-02-16 01:37:33 +0000 | [diff] [blame] | 1562 | void EmitLambdaToBlockPointerBody(FunctionArgList &Args); |
Eli Friedman | 64bee65 | 2012-02-25 02:48:22 +0000 | [diff] [blame] | 1563 | void EmitLambdaBlockInvokeBody(); |
Douglas Gregor | 27dd7d9 | 2012-02-17 03:02:34 +0000 | [diff] [blame] | 1564 | void EmitLambdaDelegatingInvokeBody(const CXXMethodDecl *MD); |
| 1565 | void EmitLambdaStaticInvokeFunction(const CXXMethodDecl *MD); |
Eli Friedman | bd89f8c | 2012-02-16 01:37:33 +0000 | [diff] [blame] | 1566 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1567 | /// EmitReturnBlock - Emit the unified return block, trying to avoid its |
| 1568 | /// emission when possible. |
David Blaikie | 0a0f93c | 2013-02-01 19:09:49 +0000 | [diff] [blame] | 1569 | void EmitReturnBlock(); |
Daniel Dunbar | 1c1d607 | 2009-01-26 23:27:52 +0000 | [diff] [blame] | 1570 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1571 | /// FinishFunction - Complete IR generation of the current function. It is |
| 1572 | /// legal to call this function even if there is no current insertion point. |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 1573 | void FinishFunction(SourceLocation EndLoc=SourceLocation()); |
Daniel Dunbar | 17b708d | 2008-09-09 23:27:19 +0000 | [diff] [blame] | 1574 | |
Anders Carlsson | 519c328 | 2010-03-24 00:39:18 +0000 | [diff] [blame] | 1575 | /// GenerateThunk - Generate a thunk for the given method. |
John McCall | d26bc76 | 2011-03-09 04:27:21 +0000 | [diff] [blame] | 1576 | void GenerateThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, |
| 1577 | GlobalDecl GD, const ThunkInfo &Thunk); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1578 | |
Eli Friedman | 7dcdf5b | 2011-05-06 17:27:27 +0000 | [diff] [blame] | 1579 | void GenerateVarArgsThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, |
| 1580 | GlobalDecl GD, const ThunkInfo &Thunk); |
| 1581 | |
Douglas Gregor | fb8cc25 | 2010-05-05 05:51:00 +0000 | [diff] [blame] | 1582 | void EmitCtorPrologue(const CXXConstructorDecl *CD, CXXCtorType Type, |
| 1583 | FunctionArgList &Args); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1584 | |
Eli Friedman | b74ed08 | 2012-02-14 02:31:03 +0000 | [diff] [blame] | 1585 | void EmitInitializerForField(FieldDecl *Field, LValue LHS, Expr *Init, |
| 1586 | ArrayRef<VarDecl *> ArrayIndexes); |
| 1587 | |
Anders Carlsson | d103f9f | 2010-03-28 19:40:00 +0000 | [diff] [blame] | 1588 | /// InitializeVTablePointer - Initialize the vtable pointer of the given |
| 1589 | /// subobject. |
| 1590 | /// |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1591 | void InitializeVTablePointer(BaseSubobject Base, |
Anders Carlsson | b3b772e | 2010-04-20 05:22:15 +0000 | [diff] [blame] | 1592 | const CXXRecordDecl *NearestVBase, |
Ken Dyck | d6fb21f | 2011-03-23 01:04:18 +0000 | [diff] [blame] | 1593 | CharUnits OffsetFromNearestVBase, |
Anders Carlsson | d103f9f | 2010-03-28 19:40:00 +0000 | [diff] [blame] | 1594 | llvm::Constant *VTable, |
| 1595 | const CXXRecordDecl *VTableClass); |
| 1596 | |
| 1597 | typedef llvm::SmallPtrSet<const CXXRecordDecl *, 4> VisitedVirtualBasesSetTy; |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1598 | void InitializeVTablePointers(BaseSubobject Base, |
Anders Carlsson | b3b772e | 2010-04-20 05:22:15 +0000 | [diff] [blame] | 1599 | const CXXRecordDecl *NearestVBase, |
Ken Dyck | d6fb21f | 2011-03-23 01:04:18 +0000 | [diff] [blame] | 1600 | CharUnits OffsetFromNearestVBase, |
Anders Carlsson | 603d6d1 | 2010-03-28 21:07:49 +0000 | [diff] [blame] | 1601 | bool BaseIsNonVirtualPrimaryBase, |
| 1602 | llvm::Constant *VTable, |
| 1603 | const CXXRecordDecl *VTableClass, |
| 1604 | VisitedVirtualBasesSetTy& VBases); |
Eli Friedman | 77a259c | 2009-12-08 06:46:18 +0000 | [diff] [blame] | 1605 | |
Anders Carlsson | 603d6d1 | 2010-03-28 21:07:49 +0000 | [diff] [blame] | 1606 | void InitializeVTablePointers(const CXXRecordDecl *ClassDecl); |
Anders Carlsson | d103f9f | 2010-03-28 19:40:00 +0000 | [diff] [blame] | 1607 | |
Dan Gohman | 043fb9a | 2010-10-26 18:44:08 +0000 | [diff] [blame] | 1608 | /// GetVTablePtr - Return the Value of the vtable pointer member pointed |
| 1609 | /// to by This. |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 1610 | llvm::Value *GetVTablePtr(llvm::Value *This, llvm::Type *Ty); |
Anders Carlsson | d103f9f | 2010-03-28 19:40:00 +0000 | [diff] [blame] | 1611 | |
John McCall | 50da2ca | 2010-07-21 05:30:47 +0000 | [diff] [blame] | 1612 | /// EnterDtorCleanups - Enter the cleanups necessary to complete the |
| 1613 | /// given phase of destruction for a destructor. The end result |
| 1614 | /// should call destructors on members and base classes in reverse |
| 1615 | /// order of their construction. |
| 1616 | void EnterDtorCleanups(const CXXDestructorDecl *Dtor, CXXDtorType Type); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1617 | |
Chris Lattner | 7255a2d | 2010-06-22 00:03:40 +0000 | [diff] [blame] | 1618 | /// ShouldInstrumentFunction - Return true if the current function should be |
| 1619 | /// instrumented with __cyg_profile_func_* calls |
| 1620 | bool ShouldInstrumentFunction(); |
| 1621 | |
| 1622 | /// EmitFunctionInstrumentation - Emit LLVM code to call the specified |
| 1623 | /// instrumentation function with the current function and the call site, if |
| 1624 | /// function instrumentation is enabled. |
| 1625 | void EmitFunctionInstrumentation(const char *Fn); |
| 1626 | |
Roman Divacky | be4c870 | 2011-02-10 16:52:03 +0000 | [diff] [blame] | 1627 | /// EmitMCountInstrumentation - Emit call to .mcount. |
| 1628 | void EmitMCountInstrumentation(); |
| 1629 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1630 | /// EmitFunctionProlog - Emit the target specific LLVM code to load the |
| 1631 | /// arguments for the given function. This is also responsible for naming the |
| 1632 | /// LLVM function arguments. |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 1633 | void EmitFunctionProlog(const CGFunctionInfo &FI, |
| 1634 | llvm::Function *Fn, |
Daniel Dunbar | 17b708d | 2008-09-09 23:27:19 +0000 | [diff] [blame] | 1635 | const FunctionArgList &Args); |
| 1636 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1637 | /// EmitFunctionEpilog - Emit the target specific LLVM code to return the |
| 1638 | /// given temporary. |
Adrian Prantl | fa6b079 | 2013-05-02 17:30:20 +0000 | [diff] [blame] | 1639 | void EmitFunctionEpilog(const CGFunctionInfo &FI, bool EmitRetDbgLoc); |
Daniel Dunbar | 17b708d | 2008-09-09 23:27:19 +0000 | [diff] [blame] | 1640 | |
Mike Stump | cce3d4f | 2009-12-07 23:38:24 +0000 | [diff] [blame] | 1641 | /// EmitStartEHSpec - Emit the start of the exception spec. |
| 1642 | void EmitStartEHSpec(const Decl *D); |
| 1643 | |
| 1644 | /// EmitEndEHSpec - Emit the end of the exception spec. |
| 1645 | void EmitEndEHSpec(const Decl *D); |
| 1646 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1647 | /// getTerminateLandingPad - Return a landing pad that just calls terminate. |
| 1648 | llvm::BasicBlock *getTerminateLandingPad(); |
| 1649 | |
| 1650 | /// getTerminateHandler - Return a handler (not a landing pad, just |
| 1651 | /// a catch handler) that just calls terminate. This is used when |
| 1652 | /// a terminate scope encloses a try. |
Mike Stump | 9b39c51 | 2009-12-09 22:59:31 +0000 | [diff] [blame] | 1653 | llvm::BasicBlock *getTerminateHandler(); |
| 1654 | |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 1655 | llvm::Type *ConvertTypeForMem(QualType T); |
| 1656 | llvm::Type *ConvertType(QualType T); |
| 1657 | llvm::Type *ConvertType(const TypeDecl *T) { |
John McCall | bff225e | 2010-02-16 04:15:37 +0000 | [diff] [blame] | 1658 | return ConvertType(getContext().getTypeDeclType(T)); |
| 1659 | } |
Chris Lattner | c8aa5f1 | 2008-04-04 04:07:35 +0000 | [diff] [blame] | 1660 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1661 | /// LoadObjCSelf - Load the value of self. This function is only valid while |
| 1662 | /// generating code for an Objective-C method. |
Chris Lattner | c8aa5f1 | 2008-04-04 04:07:35 +0000 | [diff] [blame] | 1663 | llvm::Value *LoadObjCSelf(); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1664 | |
| 1665 | /// TypeOfSelfObject - Return type of object that this self represents. |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 1666 | QualType TypeOfSelfObject(); |
Chris Lattner | 4111024 | 2008-06-17 18:05:57 +0000 | [diff] [blame] | 1667 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1668 | /// hasAggregateLLVMType - Return true if the specified AST type will map into |
| 1669 | /// an aggregate LLVM type or is void. |
John McCall | 9d232c8 | 2013-03-07 21:37:08 +0000 | [diff] [blame] | 1670 | static TypeEvaluationKind getEvaluationKind(QualType T); |
| 1671 | |
| 1672 | static bool hasScalarEvaluationKind(QualType T) { |
| 1673 | return getEvaluationKind(T) == TEK_Scalar; |
| 1674 | } |
| 1675 | |
| 1676 | static bool hasAggregateEvaluationKind(QualType T) { |
| 1677 | return getEvaluationKind(T) == TEK_Aggregate; |
| 1678 | } |
Daniel Dunbar | 55e8742 | 2008-11-11 02:29:29 +0000 | [diff] [blame] | 1679 | |
| 1680 | /// createBasicBlock - Create an LLVM basic block. |
Richard Smith | 4def70d | 2012-10-09 19:52:38 +0000 | [diff] [blame] | 1681 | llvm::BasicBlock *createBasicBlock(const Twine &name = "", |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1682 | llvm::Function *parent = 0, |
| 1683 | llvm::BasicBlock *before = 0) { |
Daniel Dunbar | 29ea672 | 2008-11-12 00:01:12 +0000 | [diff] [blame] | 1684 | #ifdef NDEBUG |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1685 | return llvm::BasicBlock::Create(getLLVMContext(), "", parent, before); |
Daniel Dunbar | 29ea672 | 2008-11-12 00:01:12 +0000 | [diff] [blame] | 1686 | #else |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1687 | return llvm::BasicBlock::Create(getLLVMContext(), name, parent, before); |
Daniel Dunbar | 29ea672 | 2008-11-12 00:01:12 +0000 | [diff] [blame] | 1688 | #endif |
Daniel Dunbar | 55e8742 | 2008-11-11 02:29:29 +0000 | [diff] [blame] | 1689 | } |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1690 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1691 | /// getBasicBlockForLabel - Return the LLVM basicblock that the specified |
| 1692 | /// label maps to. |
Chris Lattner | ad8dcf4 | 2011-02-17 07:39:24 +0000 | [diff] [blame] | 1693 | JumpDest getJumpDestForLabel(const LabelDecl *S); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1694 | |
Mike Stump | f71d232 | 2009-11-30 20:08:49 +0000 | [diff] [blame] | 1695 | /// SimplifyForwardingBlocks - If the given basic block is only a branch to |
| 1696 | /// another basic block, simplify it. This assumes that no other code could |
| 1697 | /// potentially reference the basic block. |
Daniel Dunbar | aa5bd87 | 2009-04-01 04:37:47 +0000 | [diff] [blame] | 1698 | void SimplifyForwardingBlocks(llvm::BasicBlock *BB); |
| 1699 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1700 | /// EmitBlock - Emit the given block \arg BB and set it as the insert point, |
| 1701 | /// adding a fall-through branch from the current insert block if |
| 1702 | /// necessary. It is legal to call this function even if there is no current |
| 1703 | /// insertion point. |
Daniel Dunbar | a0c21a8 | 2008-11-13 01:24:05 +0000 | [diff] [blame] | 1704 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1705 | /// IsFinished - If true, indicates that the caller has finished emitting |
| 1706 | /// branches to the given block and does not expect to emit code into it. This |
| 1707 | /// means the block can be ignored if it is unreachable. |
Daniel Dunbar | a0c21a8 | 2008-11-13 01:24:05 +0000 | [diff] [blame] | 1708 | void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false); |
Daniel Dunbar | 824e3bd | 2008-11-11 04:34:23 +0000 | [diff] [blame] | 1709 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 1710 | /// EmitBlockAfterUses - Emit the given block somewhere hopefully |
| 1711 | /// near its uses, and leave the insertion point in it. |
| 1712 | void EmitBlockAfterUses(llvm::BasicBlock *BB); |
| 1713 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1714 | /// EmitBranch - Emit a branch to the specified basic block from the current |
| 1715 | /// insert block, taking care to avoid creation of branches from dummy |
| 1716 | /// blocks. It is legal to call this function even if there is no current |
| 1717 | /// insertion point. |
Daniel Dunbar | 5e08ad3 | 2008-11-11 22:06:59 +0000 | [diff] [blame] | 1718 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1719 | /// This function clears the current insertion point. The caller should follow |
| 1720 | /// calls to this function with calls to Emit*Block prior to generation new |
| 1721 | /// code. |
Daniel Dunbar | d57a871 | 2008-11-11 09:41:28 +0000 | [diff] [blame] | 1722 | void EmitBranch(llvm::BasicBlock *Block); |
| 1723 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1724 | /// HaveInsertPoint - True if an insertion point is defined. If not, this |
| 1725 | /// indicates that the current code being emitted is unreachable. |
| 1726 | bool HaveInsertPoint() const { |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 1727 | return Builder.GetInsertBlock() != 0; |
| 1728 | } |
| 1729 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1730 | /// EnsureInsertPoint - Ensure that an insertion point is defined so that |
| 1731 | /// emitted IR has a place to go. Note that by definition, if this function |
| 1732 | /// creates a block then that block is unreachable; callers may do better to |
| 1733 | /// detect when no insertion point is defined and simply skip IR generation. |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 1734 | void EnsureInsertPoint() { |
| 1735 | if (!HaveInsertPoint()) |
| 1736 | EmitBlock(createBasicBlock()); |
| 1737 | } |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1738 | |
Daniel Dunbar | 488e993 | 2008-08-16 00:56:44 +0000 | [diff] [blame] | 1739 | /// ErrorUnsupported - Print out an error that codegen doesn't support the |
Chris Lattner | dc5e826 | 2007-12-02 01:43:38 +0000 | [diff] [blame] | 1740 | /// specified stmt yet. |
Daniel Dunbar | 90df4b6 | 2008-09-04 03:43:08 +0000 | [diff] [blame] | 1741 | void ErrorUnsupported(const Stmt *S, const char *Type, |
| 1742 | bool OmitOnError=false); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1743 | |
| 1744 | //===--------------------------------------------------------------------===// |
| 1745 | // Helpers |
| 1746 | //===--------------------------------------------------------------------===// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1747 | |
Eli Friedman | 6da2c71 | 2011-12-03 04:14:32 +0000 | [diff] [blame] | 1748 | LValue MakeAddrLValue(llvm::Value *V, QualType T, |
| 1749 | CharUnits Alignment = CharUnits()) { |
Dan Gohman | 3d5aff5 | 2010-10-14 23:06:10 +0000 | [diff] [blame] | 1750 | return LValue::MakeAddr(V, T, Alignment, getContext(), |
| 1751 | CGM.getTBAAInfo(T)); |
Daniel Dunbar | 5cf8bfe | 2010-08-21 02:53:44 +0000 | [diff] [blame] | 1752 | } |
John McCall | e0c1168 | 2012-07-02 23:58:38 +0000 | [diff] [blame] | 1753 | |
Eli Friedman | 2f77b3d | 2011-11-16 00:42:57 +0000 | [diff] [blame] | 1754 | LValue MakeNaturalAlignAddrLValue(llvm::Value *V, QualType T) { |
Eli Friedman | 6da2c71 | 2011-12-03 04:14:32 +0000 | [diff] [blame] | 1755 | CharUnits Alignment; |
| 1756 | if (!T->isIncompleteType()) |
| 1757 | Alignment = getContext().getTypeAlignInChars(T); |
Eli Friedman | 2f77b3d | 2011-11-16 00:42:57 +0000 | [diff] [blame] | 1758 | return LValue::MakeAddr(V, T, Alignment, getContext(), |
| 1759 | CGM.getTBAAInfo(T)); |
| 1760 | } |
Daniel Dunbar | 5cf8bfe | 2010-08-21 02:53:44 +0000 | [diff] [blame] | 1761 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1762 | /// CreateTempAlloca - This creates a alloca and inserts it into the entry |
Daniel Dunbar | 195337d | 2010-02-09 02:48:28 +0000 | [diff] [blame] | 1763 | /// block. The caller is responsible for setting an appropriate alignment on |
| 1764 | /// the alloca. |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 1765 | llvm::AllocaInst *CreateTempAlloca(llvm::Type *Ty, |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 1766 | const Twine &Name = "tmp"); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1767 | |
John McCall | ac41816 | 2010-04-22 01:10:34 +0000 | [diff] [blame] | 1768 | /// InitTempAlloca - Provide an initial value for the given alloca. |
| 1769 | void InitTempAlloca(llvm::AllocaInst *Alloca, llvm::Value *Value); |
| 1770 | |
Daniel Dunbar | 9bd4da2 | 2010-02-16 19:44:13 +0000 | [diff] [blame] | 1771 | /// CreateIRTemp - Create a temporary IR object of the given type, with |
| 1772 | /// appropriate alignment. This routine should only be used when an temporary |
| 1773 | /// value needs to be stored into an alloca (for example, to avoid explicit |
| 1774 | /// PHI construction), but the type is the IR type, not the type appropriate |
| 1775 | /// for storing in memory. |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 1776 | llvm::AllocaInst *CreateIRTemp(QualType T, const Twine &Name = "tmp"); |
Daniel Dunbar | 9bd4da2 | 2010-02-16 19:44:13 +0000 | [diff] [blame] | 1777 | |
Daniel Dunbar | 195337d | 2010-02-09 02:48:28 +0000 | [diff] [blame] | 1778 | /// CreateMemTemp - Create a temporary memory object of the given type, with |
| 1779 | /// appropriate alignment. |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 1780 | llvm::AllocaInst *CreateMemTemp(QualType T, const Twine &Name = "tmp"); |
Daniel Dunbar | 195337d | 2010-02-09 02:48:28 +0000 | [diff] [blame] | 1781 | |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 1782 | /// CreateAggTemp - Create a temporary memory object for the given |
| 1783 | /// aggregate type. |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 1784 | AggValueSlot CreateAggTemp(QualType T, const Twine &Name = "tmp") { |
Eli Friedman | d7722d9 | 2011-12-03 02:13:40 +0000 | [diff] [blame] | 1785 | CharUnits Alignment = getContext().getTypeAlignInChars(T); |
Eli Friedman | f394078 | 2011-12-03 00:54:26 +0000 | [diff] [blame] | 1786 | return AggValueSlot::forAddr(CreateMemTemp(T, Name), Alignment, |
| 1787 | T.getQualifiers(), |
John McCall | 7c2349b | 2011-08-25 20:40:09 +0000 | [diff] [blame] | 1788 | AggValueSlot::IsNotDestructed, |
John McCall | 410ffb2 | 2011-08-25 23:04:34 +0000 | [diff] [blame] | 1789 | AggValueSlot::DoesNotNeedGCBarriers, |
Chad Rosier | 649b4a1 | 2012-03-29 17:37:10 +0000 | [diff] [blame] | 1790 | AggValueSlot::IsNotAliased); |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 1791 | } |
| 1792 | |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1793 | /// Emit a cast to void* in the appropriate address space. |
| 1794 | llvm::Value *EmitCastToVoidPtr(llvm::Value *value); |
| 1795 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1796 | /// EvaluateExprAsBool - Perform the usual unary conversions on the specified |
| 1797 | /// expression and compare the result against zero, returning an Int1Ty value. |
| 1798 | llvm::Value *EvaluateExprAsBool(const Expr *E); |
| 1799 | |
John McCall | 2a41637 | 2010-12-05 02:00:02 +0000 | [diff] [blame] | 1800 | /// EmitIgnoredExpr - Emit an expression in a context which ignores the result. |
| 1801 | void EmitIgnoredExpr(const Expr *E); |
| 1802 | |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 1803 | /// EmitAnyExpr - Emit code to compute the specified expression which can have |
| 1804 | /// any type. The result is returned as an RValue struct. If this is an |
| 1805 | /// aggregate expression, the aggloc/agglocvolatile arguments indicate where |
| 1806 | /// the result should be returned. |
Mike Stump | 49d1cd5 | 2009-05-26 22:03:21 +0000 | [diff] [blame] | 1807 | /// |
Dmitri Gribenko | 70517ca | 2012-08-23 17:58:28 +0000 | [diff] [blame] | 1808 | /// \param ignoreResult True if the resulting value isn't used. |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 1809 | RValue EmitAnyExpr(const Expr *E, |
John McCall | e0c1168 | 2012-07-02 23:58:38 +0000 | [diff] [blame] | 1810 | AggValueSlot aggSlot = AggValueSlot::ignored(), |
| 1811 | bool ignoreResult = false); |
Devang Patel | d9363c3 | 2007-09-28 21:49:18 +0000 | [diff] [blame] | 1812 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1813 | // EmitVAListRef - Emit a "reference" to a va_list; this is either the address |
| 1814 | // or the value of the expression, depending on how va_list is defined. |
Eli Friedman | 4fd0aa5 | 2009-01-20 17:46:04 +0000 | [diff] [blame] | 1815 | llvm::Value *EmitVAListRef(const Expr *E); |
| 1816 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1817 | /// EmitAnyExprToTemp - Similary to EmitAnyExpr(), however, the result will |
| 1818 | /// always be accessible even if no aggregate location is provided. |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 1819 | RValue EmitAnyExprToTemp(const Expr *E); |
Daniel Dunbar | 46f45b9 | 2008-09-09 01:06:48 +0000 | [diff] [blame] | 1820 | |
John McCall | 60d3365 | 2011-03-08 09:11:50 +0000 | [diff] [blame] | 1821 | /// EmitAnyExprToMem - Emits the code necessary to evaluate an |
Chad Rosier | 649b4a1 | 2012-03-29 17:37:10 +0000 | [diff] [blame] | 1822 | /// arbitrary expression into the given memory location. |
John McCall | 3d3ec1c | 2010-04-21 10:05:39 +0000 | [diff] [blame] | 1823 | void EmitAnyExprToMem(const Expr *E, llvm::Value *Location, |
Chad Rosier | 649b4a1 | 2012-03-29 17:37:10 +0000 | [diff] [blame] | 1824 | Qualifiers Quals, bool IsInitializer); |
John McCall | 3d3ec1c | 2010-04-21 10:05:39 +0000 | [diff] [blame] | 1825 | |
John McCall | 60d3365 | 2011-03-08 09:11:50 +0000 | [diff] [blame] | 1826 | /// EmitExprAsInit - Emits the code necessary to initialize a |
| 1827 | /// location in memory with the given initializer. |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 1828 | void EmitExprAsInit(const Expr *init, const ValueDecl *D, |
John McCall | a07398e | 2011-06-16 04:16:24 +0000 | [diff] [blame] | 1829 | LValue lvalue, bool capturedByInit); |
John McCall | 60d3365 | 2011-03-08 09:11:50 +0000 | [diff] [blame] | 1830 | |
Fariborz Jahanian | 3ac83d6 | 2013-01-25 23:57:05 +0000 | [diff] [blame] | 1831 | /// hasVolatileMember - returns true if aggregate type has a volatile |
| 1832 | /// member. |
| 1833 | bool hasVolatileMember(QualType T) { |
| 1834 | if (const RecordType *RT = T->getAs<RecordType>()) { |
| 1835 | const RecordDecl *RD = cast<RecordDecl>(RT->getDecl()); |
| 1836 | return RD->hasVolatileMember(); |
| 1837 | } |
| 1838 | return false; |
| 1839 | } |
Arnaud A. de Grandmaison | 8fcbb8d | 2013-02-05 09:06:17 +0000 | [diff] [blame] | 1840 | /// EmitAggregateCopy - Emit an aggregate assignment. |
Benjamin Kramer | 6cacae8 | 2012-09-30 12:43:37 +0000 | [diff] [blame] | 1841 | /// |
| 1842 | /// The difference to EmitAggregateCopy is that tail padding is not copied. |
| 1843 | /// This is required for correctness when assigning non-POD structures in C++. |
| 1844 | void EmitAggregateAssign(llvm::Value *DestPtr, llvm::Value *SrcPtr, |
Fariborz Jahanian | 3ac83d6 | 2013-01-25 23:57:05 +0000 | [diff] [blame] | 1845 | QualType EltTy) { |
| 1846 | bool IsVolatile = hasVolatileMember(EltTy); |
| 1847 | EmitAggregateCopy(DestPtr, SrcPtr, EltTy, IsVolatile, CharUnits::Zero(), |
| 1848 | true); |
Benjamin Kramer | 6cacae8 | 2012-09-30 12:43:37 +0000 | [diff] [blame] | 1849 | } |
| 1850 | |
Arnaud A. de Grandmaison | 8fcbb8d | 2013-02-05 09:06:17 +0000 | [diff] [blame] | 1851 | /// EmitAggregateCopy - Emit an aggregate copy. |
Mike Stump | 27fe2e6 | 2009-05-23 22:29:41 +0000 | [diff] [blame] | 1852 | /// |
Sylvestre Ledru | f3477c1 | 2012-09-27 10:16:10 +0000 | [diff] [blame] | 1853 | /// \param isVolatile - True iff either the source or the destination is |
Mike Stump | 27fe2e6 | 2009-05-23 22:29:41 +0000 | [diff] [blame] | 1854 | /// volatile. |
Benjamin Kramer | 6cacae8 | 2012-09-30 12:43:37 +0000 | [diff] [blame] | 1855 | /// \param isAssignment - If false, allow padding to be copied. This often |
| 1856 | /// yields more efficient. |
Daniel Dunbar | 7482d12 | 2008-09-09 20:49:46 +0000 | [diff] [blame] | 1857 | void EmitAggregateCopy(llvm::Value *DestPtr, llvm::Value *SrcPtr, |
Eli Friedman | bd7d828 | 2011-12-05 22:23:28 +0000 | [diff] [blame] | 1858 | QualType EltTy, bool isVolatile=false, |
Benjamin Kramer | 6cacae8 | 2012-09-30 12:43:37 +0000 | [diff] [blame] | 1859 | CharUnits Alignment = CharUnits::Zero(), |
| 1860 | bool isAssignment = false); |
Daniel Dunbar | 7482d12 | 2008-09-09 20:49:46 +0000 | [diff] [blame] | 1861 | |
Devang Patel | 51b09f2 | 2007-10-04 23:45:31 +0000 | [diff] [blame] | 1862 | /// StartBlock - Start new block named N. If insert block is a dummy block |
| 1863 | /// then reuse it. |
| 1864 | void StartBlock(const char *N); |
| 1865 | |
Anders Carlsson | dde0a94 | 2008-09-11 09:15:33 +0000 | [diff] [blame] | 1866 | /// GetAddrOfLocalVar - Return the address of a local variable. |
John McCall | 4c40d98 | 2010-08-31 07:33:07 +0000 | [diff] [blame] | 1867 | llvm::Value *GetAddrOfLocalVar(const VarDecl *VD) { |
| 1868 | llvm::Value *Res = LocalDeclMap[VD]; |
| 1869 | assert(Res && "Invalid argument to GetAddrOfLocalVar(), no decl!"); |
| 1870 | return Res; |
| 1871 | } |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1872 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1873 | /// getOpaqueLValueMapping - Given an opaque value expression (which |
| 1874 | /// must be mapped to an l-value), return its mapping. |
| 1875 | const LValue &getOpaqueLValueMapping(const OpaqueValueExpr *e) { |
| 1876 | assert(OpaqueValueMapping::shouldBindAsLValue(e)); |
| 1877 | |
| 1878 | llvm::DenseMap<const OpaqueValueExpr*,LValue>::iterator |
| 1879 | it = OpaqueLValues.find(e); |
| 1880 | assert(it != OpaqueLValues.end() && "no mapping for opaque value!"); |
| 1881 | return it->second; |
| 1882 | } |
| 1883 | |
| 1884 | /// getOpaqueRValueMapping - Given an opaque value expression (which |
| 1885 | /// must be mapped to an r-value), return its mapping. |
| 1886 | const RValue &getOpaqueRValueMapping(const OpaqueValueExpr *e) { |
| 1887 | assert(!OpaqueValueMapping::shouldBindAsLValue(e)); |
| 1888 | |
| 1889 | llvm::DenseMap<const OpaqueValueExpr*,RValue>::iterator |
| 1890 | it = OpaqueRValues.find(e); |
| 1891 | assert(it != OpaqueRValues.end() && "no mapping for opaque value!"); |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1892 | return it->second; |
| 1893 | } |
| 1894 | |
Dan Gohman | 4f8d123 | 2008-05-22 00:50:06 +0000 | [diff] [blame] | 1895 | /// getAccessedFieldNo - Given an encoded value and a result number, return |
| 1896 | /// the input field number being accessed. |
| 1897 | static unsigned getAccessedFieldNo(unsigned Idx, const llvm::Constant *Elts); |
| 1898 | |
Chris Lattner | ad8dcf4 | 2011-02-17 07:39:24 +0000 | [diff] [blame] | 1899 | llvm::BlockAddress *GetAddrOfLabel(const LabelDecl *L); |
Chris Lattner | 3d00fdc | 2009-10-13 06:55:33 +0000 | [diff] [blame] | 1900 | llvm::BasicBlock *GetIndirectGotoBlock(); |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 1901 | |
Anders Carlsson | 1884eb0 | 2010-05-22 17:35:42 +0000 | [diff] [blame] | 1902 | /// EmitNullInitialization - Generate code to set a value of the given type to |
| 1903 | /// null, If the type contains data member pointers, they will be initialized |
| 1904 | /// to -1 in accordance with the Itanium C++ ABI. |
| 1905 | void EmitNullInitialization(llvm::Value *DestPtr, QualType Ty); |
Anders Carlsson | ddf7cac | 2008-11-04 05:30:00 +0000 | [diff] [blame] | 1906 | |
| 1907 | // EmitVAArg - Generate code to get an argument from the passed in pointer |
| 1908 | // and update it accordingly. The return value is a pointer to the argument. |
| 1909 | // FIXME: We should be able to get rid of this method and use the va_arg |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1910 | // instruction in LLVM instead once it works well enough. |
Anders Carlsson | ddf7cac | 2008-11-04 05:30:00 +0000 | [diff] [blame] | 1911 | llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty); |
Anders Carlsson | f666b77 | 2008-12-20 20:27:15 +0000 | [diff] [blame] | 1912 | |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1913 | /// emitArrayLength - Compute the length of an array, even if it's a |
| 1914 | /// VLA, and drill down to the base element type. |
| 1915 | llvm::Value *emitArrayLength(const ArrayType *arrayType, |
| 1916 | QualType &baseType, |
| 1917 | llvm::Value *&addr); |
| 1918 | |
John McCall | bc8d40d | 2011-06-24 21:55:10 +0000 | [diff] [blame] | 1919 | /// EmitVLASize - Capture all the sizes for the VLA expressions in |
| 1920 | /// the given variably-modified type and store them in the VLASizeMap. |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 1921 | /// |
| 1922 | /// This function can be called with a null (unreachable) insert point. |
John McCall | bc8d40d | 2011-06-24 21:55:10 +0000 | [diff] [blame] | 1923 | void EmitVariablyModifiedType(QualType Ty); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1924 | |
John McCall | bc8d40d | 2011-06-24 21:55:10 +0000 | [diff] [blame] | 1925 | /// getVLASize - Returns an LLVM value that corresponds to the size, |
| 1926 | /// in non-variably-sized elements, of a variable length array type, |
| 1927 | /// plus that largest non-variably-sized element type. Assumes that |
| 1928 | /// the type has already been emitted with EmitVariablyModifiedType. |
| 1929 | std::pair<llvm::Value*,QualType> getVLASize(const VariableArrayType *vla); |
| 1930 | std::pair<llvm::Value*,QualType> getVLASize(QualType vla); |
Anders Carlsson | dcc90d8 | 2008-12-12 07:19:02 +0000 | [diff] [blame] | 1931 | |
Anders Carlsson | 5f4307b | 2009-04-14 16:58:56 +0000 | [diff] [blame] | 1932 | /// LoadCXXThis - Load the value of 'this'. This function is only valid while |
| 1933 | /// generating code for an C++ member function. |
John McCall | 2504941 | 2010-02-16 22:04:33 +0000 | [diff] [blame] | 1934 | llvm::Value *LoadCXXThis() { |
| 1935 | assert(CXXThisValue && "no 'this' value for this function"); |
| 1936 | return CXXThisValue; |
| 1937 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1938 | |
Anders Carlsson | c997d42 | 2010-01-02 01:01:18 +0000 | [diff] [blame] | 1939 | /// LoadCXXVTT - Load the VTT parameter to base constructors/destructors have |
| 1940 | /// virtual bases. |
Timur Iskhodzhanov | 59660c2 | 2013-02-13 08:37:51 +0000 | [diff] [blame] | 1941 | // FIXME: Every place that calls LoadCXXVTT is something |
| 1942 | // that needs to be abstracted properly. |
John McCall | 2504941 | 2010-02-16 22:04:33 +0000 | [diff] [blame] | 1943 | llvm::Value *LoadCXXVTT() { |
Timur Iskhodzhanov | 59660c2 | 2013-02-13 08:37:51 +0000 | [diff] [blame] | 1944 | assert(CXXStructorImplicitParamValue && "no VTT value for this function"); |
| 1945 | return CXXStructorImplicitParamValue; |
| 1946 | } |
| 1947 | |
| 1948 | /// LoadCXXStructorImplicitParam - Load the implicit parameter |
| 1949 | /// for a constructor/destructor. |
| 1950 | llvm::Value *LoadCXXStructorImplicitParam() { |
| 1951 | assert(CXXStructorImplicitParamValue && |
| 1952 | "no implicit argument value for this function"); |
| 1953 | return CXXStructorImplicitParamValue; |
John McCall | 2504941 | 2010-02-16 22:04:33 +0000 | [diff] [blame] | 1954 | } |
John McCall | bff225e | 2010-02-16 04:15:37 +0000 | [diff] [blame] | 1955 | |
| 1956 | /// GetAddressOfBaseOfCompleteClass - Convert the given pointer to a |
Anders Carlsson | 8561a86 | 2010-04-24 23:01:49 +0000 | [diff] [blame] | 1957 | /// complete class to the given direct base. |
| 1958 | llvm::Value * |
| 1959 | GetAddressOfDirectBaseInCompleteClass(llvm::Value *Value, |
| 1960 | const CXXRecordDecl *Derived, |
| 1961 | const CXXRecordDecl *Base, |
| 1962 | bool BaseIsVirtual); |
Anders Carlsson | a88ad56 | 2010-04-24 21:51:08 +0000 | [diff] [blame] | 1963 | |
Mike Stump | f71d232 | 2009-11-30 20:08:49 +0000 | [diff] [blame] | 1964 | /// GetAddressOfBaseClass - This function will add the necessary delta to the |
| 1965 | /// load of 'this' and returns address of the base class. |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1966 | llvm::Value *GetAddressOfBaseClass(llvm::Value *Value, |
Anders Carlsson | 8561a86 | 2010-04-24 23:01:49 +0000 | [diff] [blame] | 1967 | const CXXRecordDecl *Derived, |
John McCall | f871d0c | 2010-08-07 06:22:56 +0000 | [diff] [blame] | 1968 | CastExpr::path_const_iterator PathBegin, |
| 1969 | CastExpr::path_const_iterator PathEnd, |
Anders Carlsson | 34a2d38 | 2010-04-24 21:06:20 +0000 | [diff] [blame] | 1970 | bool NullCheckValue); |
| 1971 | |
Anders Carlsson | a3697c9 | 2009-11-23 17:57:54 +0000 | [diff] [blame] | 1972 | llvm::Value *GetAddressOfDerivedClass(llvm::Value *Value, |
Anders Carlsson | 8561a86 | 2010-04-24 23:01:49 +0000 | [diff] [blame] | 1973 | const CXXRecordDecl *Derived, |
John McCall | f871d0c | 2010-08-07 06:22:56 +0000 | [diff] [blame] | 1974 | CastExpr::path_const_iterator PathBegin, |
| 1975 | CastExpr::path_const_iterator PathEnd, |
Anders Carlsson | a3697c9 | 2009-11-23 17:57:54 +0000 | [diff] [blame] | 1976 | bool NullCheckValue); |
| 1977 | |
Timur Iskhodzhanov | 1d4fff5 | 2013-02-27 13:46:31 +0000 | [diff] [blame] | 1978 | /// GetVTTParameter - Return the VTT parameter that should be passed to a |
| 1979 | /// base constructor/destructor with virtual bases. |
| 1980 | /// FIXME: VTTs are Itanium ABI-specific, so the definition should move |
| 1981 | /// to ItaniumCXXABI.cpp together with all the references to VTT. |
| 1982 | llvm::Value *GetVTTParameter(GlobalDecl GD, bool ForVirtualBase, |
| 1983 | bool Delegating); |
| 1984 | |
John McCall | c0bf462 | 2010-02-23 00:48:20 +0000 | [diff] [blame] | 1985 | void EmitDelegateCXXConstructorCall(const CXXConstructorDecl *Ctor, |
| 1986 | CXXCtorType CtorType, |
| 1987 | const FunctionArgList &Args); |
Sean Hunt | 059ce0d | 2011-05-01 07:04:31 +0000 | [diff] [blame] | 1988 | // It's important not to confuse this and the previous function. Delegating |
| 1989 | // constructors are the C++0x feature. The constructor delegate optimization |
| 1990 | // is used to reduce duplication in the base and complete consturctors where |
| 1991 | // they are substantially the same. |
| 1992 | void EmitDelegatingCXXConstructorCall(const CXXConstructorDecl *Ctor, |
| 1993 | const FunctionArgList &Args); |
Anders Carlsson | 155ed4a | 2010-05-02 23:20:53 +0000 | [diff] [blame] | 1994 | void EmitCXXConstructorCall(const CXXConstructorDecl *D, CXXCtorType Type, |
Douglas Gregor | 378e1e7 | 2013-01-31 05:50:40 +0000 | [diff] [blame] | 1995 | bool ForVirtualBase, bool Delegating, |
| 1996 | llvm::Value *This, |
Anders Carlsson | b14095a | 2009-04-17 00:06:03 +0000 | [diff] [blame] | 1997 | CallExpr::const_arg_iterator ArgBeg, |
| 1998 | CallExpr::const_arg_iterator ArgEnd); |
Fariborz Jahanian | 3499987 | 2010-11-13 21:53:34 +0000 | [diff] [blame] | 1999 | |
| 2000 | void EmitSynthesizedCXXCopyCtorCall(const CXXConstructorDecl *D, |
| 2001 | llvm::Value *This, llvm::Value *Src, |
| 2002 | CallExpr::const_arg_iterator ArgBeg, |
| 2003 | CallExpr::const_arg_iterator ArgEnd); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2004 | |
Fariborz Jahanian | 288dcaf | 2009-08-19 20:55:16 +0000 | [diff] [blame] | 2005 | void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, |
Anders Carlsson | 569c1f4 | 2009-09-23 02:45:36 +0000 | [diff] [blame] | 2006 | const ConstantArrayType *ArrayTy, |
Anders Carlsson | 5d4d946 | 2009-11-24 18:43:52 +0000 | [diff] [blame] | 2007 | llvm::Value *ArrayPtr, |
| 2008 | CallExpr::const_arg_iterator ArgBeg, |
Douglas Gregor | 59174c0 | 2010-07-21 01:10:17 +0000 | [diff] [blame] | 2009 | CallExpr::const_arg_iterator ArgEnd, |
| 2010 | bool ZeroInitialization = false); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2011 | |
Anders Carlsson | 569c1f4 | 2009-09-23 02:45:36 +0000 | [diff] [blame] | 2012 | void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, |
| 2013 | llvm::Value *NumElements, |
Anders Carlsson | 5d4d946 | 2009-11-24 18:43:52 +0000 | [diff] [blame] | 2014 | llvm::Value *ArrayPtr, |
| 2015 | CallExpr::const_arg_iterator ArgBeg, |
Douglas Gregor | 59174c0 | 2010-07-21 01:10:17 +0000 | [diff] [blame] | 2016 | CallExpr::const_arg_iterator ArgEnd, |
| 2017 | bool ZeroInitialization = false); |
Anders Carlsson | b14095a | 2009-04-17 00:06:03 +0000 | [diff] [blame] | 2018 | |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 2019 | static Destroyer destroyCXXObject; |
| 2020 | |
Anders Carlsson | 7267c16 | 2009-05-29 21:03:38 +0000 | [diff] [blame] | 2021 | void EmitCXXDestructorCall(const CXXDestructorDecl *D, CXXDtorType Type, |
Douglas Gregor | 378e1e7 | 2013-01-31 05:50:40 +0000 | [diff] [blame] | 2022 | bool ForVirtualBase, bool Delegating, |
| 2023 | llvm::Value *This); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2024 | |
John McCall | 1970567 | 2011-09-15 06:49:18 +0000 | [diff] [blame] | 2025 | void EmitNewArrayInitializer(const CXXNewExpr *E, QualType elementType, |
| 2026 | llvm::Value *NewPtr, llvm::Value *NumElements); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2027 | |
Peter Collingbourne | 8681160 | 2011-11-27 22:09:22 +0000 | [diff] [blame] | 2028 | void EmitCXXTemporary(const CXXTemporary *Temporary, QualType TempType, |
| 2029 | llvm::Value *Ptr); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2030 | |
Anders Carlsson | a00703d | 2009-05-31 01:40:14 +0000 | [diff] [blame] | 2031 | llvm::Value *EmitCXXNewExpr(const CXXNewExpr *E); |
Anders Carlsson | 60e282c | 2009-08-16 21:13:42 +0000 | [diff] [blame] | 2032 | void EmitCXXDeleteExpr(const CXXDeleteExpr *E); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2033 | |
Eli Friedman | 4bf8152 | 2009-11-18 00:57:03 +0000 | [diff] [blame] | 2034 | void EmitDeleteCall(const FunctionDecl *DeleteFD, llvm::Value *Ptr, |
| 2035 | QualType DeleteTy); |
| 2036 | |
Mike Stump | c2e84ae | 2009-11-15 08:09:41 +0000 | [diff] [blame] | 2037 | llvm::Value* EmitCXXTypeidExpr(const CXXTypeidExpr *E); |
Mike Stump | c849c05 | 2009-11-16 06:50:58 +0000 | [diff] [blame] | 2038 | llvm::Value *EmitDynamicCast(llvm::Value *V, const CXXDynamicCastExpr *DCE); |
Nico Weber | c5f8046 | 2012-10-11 10:13:44 +0000 | [diff] [blame] | 2039 | llvm::Value* EmitCXXUuidofExpr(const CXXUuidofExpr *E); |
Mike Stump | c2e84ae | 2009-11-15 08:09:41 +0000 | [diff] [blame] | 2040 | |
Sebastian Redl | 972edf0 | 2012-02-19 16:03:09 +0000 | [diff] [blame] | 2041 | void MaybeEmitStdInitializerListCleanup(llvm::Value *loc, const Expr *init); |
Sebastian Redl | af130fd | 2012-02-19 12:28:02 +0000 | [diff] [blame] | 2042 | void EmitStdInitializerListCleanup(llvm::Value *loc, |
| 2043 | const InitListExpr *init); |
Sebastian Redl | 32cf1f2 | 2012-02-17 08:42:25 +0000 | [diff] [blame] | 2044 | |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 2045 | /// \brief Situations in which we might emit a check for the suitability of a |
| 2046 | /// pointer or glvalue. |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 2047 | enum TypeCheckKind { |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 2048 | /// Checking the operand of a load. Must be suitably sized and aligned. |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 2049 | TCK_Load, |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 2050 | /// Checking the destination of a store. Must be suitably sized and aligned. |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 2051 | TCK_Store, |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 2052 | /// Checking the bound value in a reference binding. Must be suitably sized |
| 2053 | /// and aligned, but is not required to refer to an object (until the |
| 2054 | /// reference is used), per core issue 453. |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 2055 | TCK_ReferenceBinding, |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 2056 | /// Checking the object expression in a non-static data member access. Must |
| 2057 | /// be an object within its lifetime. |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 2058 | TCK_MemberAccess, |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 2059 | /// Checking the 'this' pointer for a call to a non-static member function. |
| 2060 | /// Must be an object within its lifetime. |
Richard Smith | 8e1cee6 | 2012-10-25 02:14:12 +0000 | [diff] [blame] | 2061 | TCK_MemberCall, |
| 2062 | /// Checking the 'this' pointer for a constructor call. |
Richard Smith | c764830 | 2013-02-13 21:18:23 +0000 | [diff] [blame] | 2063 | TCK_ConstructorCall, |
| 2064 | /// Checking the operand of a static_cast to a derived pointer type. Must be |
| 2065 | /// null or an object within its lifetime. |
| 2066 | TCK_DowncastPointer, |
| 2067 | /// Checking the operand of a static_cast to a derived reference type. Must |
| 2068 | /// be an object within its lifetime. |
| 2069 | TCK_DowncastReference |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 2070 | }; |
| 2071 | |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 2072 | /// \brief Emit a check that \p V is the address of storage of the |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 2073 | /// appropriate size and alignment for an object of type \p Type. |
Richard Smith | 4def70d | 2012-10-09 19:52:38 +0000 | [diff] [blame] | 2074 | void EmitTypeCheck(TypeCheckKind TCK, SourceLocation Loc, llvm::Value *V, |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 2075 | QualType Type, CharUnits Alignment = CharUnits::Zero()); |
Mike Stump | b14e62d | 2009-12-16 02:57:00 +0000 | [diff] [blame] | 2076 | |
Richard Smith | a0a628f | 2013-02-23 02:53:19 +0000 | [diff] [blame] | 2077 | /// \brief Emit a check that \p Base points into an array object, which |
| 2078 | /// we can access at index \p Index. \p Accessed should be \c false if we |
| 2079 | /// this expression is used as an lvalue, for instance in "&Arr[Idx]". |
| 2080 | void EmitBoundsCheck(const Expr *E, const Expr *Base, llvm::Value *Index, |
| 2081 | QualType IndexType, bool Accessed); |
| 2082 | |
Chris Lattner | dd36d32 | 2010-01-09 21:40:03 +0000 | [diff] [blame] | 2083 | llvm::Value *EmitScalarPrePostIncDec(const UnaryOperator *E, LValue LV, |
| 2084 | bool isInc, bool isPre); |
| 2085 | ComplexPairTy EmitComplexPrePostIncDec(const UnaryOperator *E, LValue LV, |
| 2086 | bool isInc, bool isPre); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2087 | //===--------------------------------------------------------------------===// |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2088 | // Declaration Emission |
| 2089 | //===--------------------------------------------------------------------===// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2090 | |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 2091 | /// EmitDecl - Emit a declaration. |
| 2092 | /// |
| 2093 | /// This function can be called with a null (unreachable) insert point. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2094 | void EmitDecl(const Decl &D); |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 2095 | |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 2096 | /// EmitVarDecl - Emit a local variable declaration. |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 2097 | /// |
| 2098 | /// This function can be called with a null (unreachable) insert point. |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 2099 | void EmitVarDecl(const VarDecl &D); |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 2100 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2101 | void EmitScalarInit(const Expr *init, const ValueDecl *D, |
John McCall | a07398e | 2011-06-16 04:16:24 +0000 | [diff] [blame] | 2102 | LValue lvalue, bool capturedByInit); |
John McCall | 7acddac | 2011-06-17 06:42:21 +0000 | [diff] [blame] | 2103 | void EmitScalarInit(llvm::Value *init, LValue lvalue); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2104 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 2105 | typedef void SpecialInitFn(CodeGenFunction &Init, const VarDecl &D, |
| 2106 | llvm::Value *Address); |
| 2107 | |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 2108 | /// EmitAutoVarDecl - Emit an auto variable declaration. |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 2109 | /// |
| 2110 | /// This function can be called with a null (unreachable) insert point. |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 2111 | void EmitAutoVarDecl(const VarDecl &D); |
| 2112 | |
| 2113 | class AutoVarEmission { |
| 2114 | friend class CodeGenFunction; |
| 2115 | |
John McCall | 57b3b6a | 2011-02-22 07:16:58 +0000 | [diff] [blame] | 2116 | const VarDecl *Variable; |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 2117 | |
| 2118 | /// The alignment of the variable. |
| 2119 | CharUnits Alignment; |
| 2120 | |
| 2121 | /// The address of the alloca. Null if the variable was emitted |
| 2122 | /// as a global constant. |
| 2123 | llvm::Value *Address; |
| 2124 | |
| 2125 | llvm::Value *NRVOFlag; |
| 2126 | |
| 2127 | /// True if the variable is a __block variable. |
| 2128 | bool IsByRef; |
| 2129 | |
| 2130 | /// True if the variable is of aggregate type and has a constant |
| 2131 | /// initializer. |
| 2132 | bool IsConstantAggregate; |
| 2133 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 2134 | /// Non-null if we should use lifetime annotations. |
| 2135 | llvm::Value *SizeForLifetimeMarkers; |
| 2136 | |
John McCall | 57b3b6a | 2011-02-22 07:16:58 +0000 | [diff] [blame] | 2137 | struct Invalid {}; |
| 2138 | AutoVarEmission(Invalid) : Variable(0) {} |
| 2139 | |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 2140 | AutoVarEmission(const VarDecl &variable) |
John McCall | 57b3b6a | 2011-02-22 07:16:58 +0000 | [diff] [blame] | 2141 | : Variable(&variable), Address(0), NRVOFlag(0), |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 2142 | IsByRef(false), IsConstantAggregate(false), |
| 2143 | SizeForLifetimeMarkers(0) {} |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 2144 | |
| 2145 | bool wasEmittedAsGlobal() const { return Address == 0; } |
| 2146 | |
| 2147 | public: |
John McCall | 57b3b6a | 2011-02-22 07:16:58 +0000 | [diff] [blame] | 2148 | static AutoVarEmission invalid() { return AutoVarEmission(Invalid()); } |
| 2149 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 2150 | bool useLifetimeMarkers() const { return SizeForLifetimeMarkers != 0; } |
| 2151 | llvm::Value *getSizeForLifetimeMarkers() const { |
| 2152 | assert(useLifetimeMarkers()); |
| 2153 | return SizeForLifetimeMarkers; |
| 2154 | } |
| 2155 | |
| 2156 | /// Returns the raw, allocated address, which is not necessarily |
| 2157 | /// the address of the object itself. |
| 2158 | llvm::Value *getAllocatedAddress() const { |
| 2159 | return Address; |
| 2160 | } |
| 2161 | |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 2162 | /// Returns the address of the object within this declaration. |
| 2163 | /// Note that this does not chase the forwarding pointer for |
| 2164 | /// __block decls. |
| 2165 | llvm::Value *getObjectAddress(CodeGenFunction &CGF) const { |
| 2166 | if (!IsByRef) return Address; |
| 2167 | |
| 2168 | return CGF.Builder.CreateStructGEP(Address, |
John McCall | 57b3b6a | 2011-02-22 07:16:58 +0000 | [diff] [blame] | 2169 | CGF.getByRefValueLLVMField(Variable), |
| 2170 | Variable->getNameAsString()); |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 2171 | } |
| 2172 | }; |
| 2173 | AutoVarEmission EmitAutoVarAlloca(const VarDecl &var); |
| 2174 | void EmitAutoVarInit(const AutoVarEmission &emission); |
| 2175 | void EmitAutoVarCleanups(const AutoVarEmission &emission); |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 2176 | void emitAutoVarTypeCleanup(const AutoVarEmission &emission, |
| 2177 | QualType::DestructionKind dtorKind); |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 2178 | |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 2179 | void EmitStaticVarDecl(const VarDecl &D, |
| 2180 | llvm::GlobalValue::LinkageTypes Linkage); |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 2181 | |
| 2182 | /// EmitParmDecl - Emit a ParmVarDecl or an ImplicitParamDecl. |
Devang Patel | 093ac46 | 2011-03-03 20:13:15 +0000 | [diff] [blame] | 2183 | void EmitParmDecl(const VarDecl &D, llvm::Value *Arg, unsigned ArgNo); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2184 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 2185 | /// protectFromPeepholes - Protect a value that we're intending to |
| 2186 | /// store to the side, but which will probably be used later, from |
| 2187 | /// aggressive peepholing optimizations that might delete it. |
| 2188 | /// |
| 2189 | /// Pass the result to unprotectFromPeepholes to declare that |
| 2190 | /// protection is no longer required. |
| 2191 | /// |
| 2192 | /// There's no particular reason why this shouldn't apply to |
| 2193 | /// l-values, it's just that no existing peepholes work on pointers. |
| 2194 | PeepholeProtection protectFromPeepholes(RValue rvalue); |
| 2195 | void unprotectFromPeepholes(PeepholeProtection protection); |
| 2196 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2197 | //===--------------------------------------------------------------------===// |
| 2198 | // Statement Emission |
| 2199 | //===--------------------------------------------------------------------===// |
| 2200 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2201 | /// EmitStopPoint - Emit a debug stoppoint if we are emitting debug info. |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 2202 | void EmitStopPoint(const Stmt *S); |
| 2203 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2204 | /// EmitStmt - Emit the code for the statement \arg S. It is legal to call |
| 2205 | /// this function even if there is no current insertion point. |
| 2206 | /// |
| 2207 | /// This function may clear the current insertion point; callers should use |
| 2208 | /// EnsureInsertPoint if they wish to subsequently generate code without first |
| 2209 | /// calling EmitBlock, EmitBranch, or EmitStmt. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2210 | void EmitStmt(const Stmt *S); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 2211 | |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 2212 | /// EmitSimpleStmt - Try to emit a "simple" statement which does not |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2213 | /// necessarily require an insertion point or debug information; typically |
| 2214 | /// because the statement amounts to a jump or a container of other |
| 2215 | /// statements. |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 2216 | /// |
| 2217 | /// \return True if the statement was handled. |
| 2218 | bool EmitSimpleStmt(const Stmt *S); |
| 2219 | |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 2220 | RValue EmitCompoundStmt(const CompoundStmt &S, bool GetLast = false, |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 2221 | AggValueSlot AVS = AggValueSlot::ignored()); |
David Blaikie | a650485 | 2013-01-26 22:16:26 +0000 | [diff] [blame] | 2222 | RValue EmitCompoundStmtWithoutScope(const CompoundStmt &S, |
| 2223 | bool GetLast = false, AggValueSlot AVS = |
| 2224 | AggValueSlot::ignored()); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 2225 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2226 | /// EmitLabel - Emit the block for the given label. It is legal to call this |
| 2227 | /// function even if there is no current insertion point. |
Chris Lattner | ad8dcf4 | 2011-02-17 07:39:24 +0000 | [diff] [blame] | 2228 | void EmitLabel(const LabelDecl *D); // helper for EmitLabelStmt. |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 2229 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2230 | void EmitLabelStmt(const LabelStmt &S); |
Richard Smith | 534986f | 2012-04-14 00:33:13 +0000 | [diff] [blame] | 2231 | void EmitAttributedStmt(const AttributedStmt &S); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2232 | void EmitGotoStmt(const GotoStmt &S); |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 2233 | void EmitIndirectGotoStmt(const IndirectGotoStmt &S); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2234 | void EmitIfStmt(const IfStmt &S); |
| 2235 | void EmitWhileStmt(const WhileStmt &S); |
| 2236 | void EmitDoStmt(const DoStmt &S); |
| 2237 | void EmitForStmt(const ForStmt &S); |
| 2238 | void EmitReturnStmt(const ReturnStmt &S); |
| 2239 | void EmitDeclStmt(const DeclStmt &S); |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 2240 | void EmitBreakStmt(const BreakStmt &S); |
| 2241 | void EmitContinueStmt(const ContinueStmt &S); |
Devang Patel | 51b09f2 | 2007-10-04 23:45:31 +0000 | [diff] [blame] | 2242 | void EmitSwitchStmt(const SwitchStmt &S); |
| 2243 | void EmitDefaultStmt(const DefaultStmt &S); |
| 2244 | void EmitCaseStmt(const CaseStmt &S); |
Devang Patel | c049e4f | 2007-10-08 20:57:48 +0000 | [diff] [blame] | 2245 | void EmitCaseStmtRange(const CaseStmt &S); |
Chad Rosier | a23b91d | 2012-08-28 18:54:39 +0000 | [diff] [blame] | 2246 | void EmitAsmStmt(const AsmStmt &S); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2247 | |
Anders Carlsson | 3d8400d | 2008-08-30 19:51:14 +0000 | [diff] [blame] | 2248 | void EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S); |
Anders Carlsson | 64d5d6c | 2008-09-09 10:04:29 +0000 | [diff] [blame] | 2249 | void EmitObjCAtTryStmt(const ObjCAtTryStmt &S); |
| 2250 | void EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S); |
Chris Lattner | 10cac6f | 2008-11-15 21:26:17 +0000 | [diff] [blame] | 2251 | void EmitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt &S); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2252 | void EmitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt &S); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2253 | |
John McCall | 93c332a | 2011-05-28 21:13:02 +0000 | [diff] [blame] | 2254 | llvm::Constant *getUnwindResumeFn(); |
Douglas Gregor | 86a3a03 | 2010-05-16 01:24:12 +0000 | [diff] [blame] | 2255 | llvm::Constant *getUnwindResumeOrRethrowFn(); |
John McCall | 59a7000 | 2010-07-07 06:56:46 +0000 | [diff] [blame] | 2256 | void EnterCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); |
| 2257 | void ExitCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); |
John McCall | 9fc6a77 | 2010-02-19 09:25:03 +0000 | [diff] [blame] | 2258 | |
Anders Carlsson | 6815e94 | 2009-09-27 18:58:34 +0000 | [diff] [blame] | 2259 | void EmitCXXTryStmt(const CXXTryStmt &S); |
Richard Smith | ad762fc | 2011-04-14 22:09:26 +0000 | [diff] [blame] | 2260 | void EmitCXXForRangeStmt(const CXXForRangeStmt &S); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2261 | |
Ben Langmuir | 524387a | 2013-05-09 19:17:11 +0000 | [diff] [blame] | 2262 | llvm::Function *EmitCapturedStmt(const CapturedStmt &S, CapturedRegionKind K); |
| 2263 | llvm::Function *GenerateCapturedStmtFunction(const CapturedDecl *CD, |
| 2264 | const RecordDecl *RD); |
| 2265 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2266 | //===--------------------------------------------------------------------===// |
| 2267 | // LValue Expression Emission |
| 2268 | //===--------------------------------------------------------------------===// |
| 2269 | |
Daniel Dunbar | 13e8173 | 2009-02-05 07:09:07 +0000 | [diff] [blame] | 2270 | /// GetUndefRValue - Get an appropriate 'undef' rvalue for the given type. |
| 2271 | RValue GetUndefRValue(QualType Ty); |
| 2272 | |
Daniel Dunbar | ce1d38b | 2009-01-09 16:50:52 +0000 | [diff] [blame] | 2273 | /// EmitUnsupportedRValue - Emit a dummy r-value using the type of E |
| 2274 | /// and issue an ErrorUnsupported style diagnostic (using the |
| 2275 | /// provided Name). |
| 2276 | RValue EmitUnsupportedRValue(const Expr *E, |
| 2277 | const char *Name); |
| 2278 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2279 | /// EmitUnsupportedLValue - Emit a dummy l-value using the type of E and issue |
| 2280 | /// an ErrorUnsupported style diagnostic (using the provided Name). |
Daniel Dunbar | 6ba82a4 | 2008-08-25 20:45:57 +0000 | [diff] [blame] | 2281 | LValue EmitUnsupportedLValue(const Expr *E, |
| 2282 | const char *Name); |
| 2283 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2284 | /// EmitLValue - Emit code to compute a designator that specifies the location |
| 2285 | /// of the expression. |
| 2286 | /// |
| 2287 | /// This can return one of two things: a simple address or a bitfield |
| 2288 | /// reference. In either case, the LLVM Value* in the LValue structure is |
| 2289 | /// guaranteed to be an LLVM pointer type. |
| 2290 | /// |
| 2291 | /// If this returns a bitfield reference, nothing about the pointee type of |
| 2292 | /// the LLVM value is known: For example, it may not be a pointer to an |
| 2293 | /// integer. |
| 2294 | /// |
| 2295 | /// If this returns a normal address, and if the lvalue's C type is fixed |
| 2296 | /// size, this method guarantees that the returned pointer type will point to |
| 2297 | /// an LLVM type of the same size of the lvalue's type. If the lvalue has a |
| 2298 | /// variable length type, this is not possible. |
| 2299 | /// |
| 2300 | LValue EmitLValue(const Expr *E); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2301 | |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 2302 | /// \brief Same as EmitLValue but additionally we generate checking code to |
| 2303 | /// guard against undefined behavior. This is only suitable when we know |
| 2304 | /// that the address will be used to access the object. |
| 2305 | LValue EmitCheckedLValue(const Expr *E, TypeCheckKind TCK); |
Mike Stump | b14e62d | 2009-12-16 02:57:00 +0000 | [diff] [blame] | 2306 | |
John McCall | 9d232c8 | 2013-03-07 21:37:08 +0000 | [diff] [blame] | 2307 | RValue convertTempToRValue(llvm::Value *addr, QualType type); |
| 2308 | |
John McCall | 9eda3ab | 2013-03-07 21:37:17 +0000 | [diff] [blame] | 2309 | void EmitAtomicInit(Expr *E, LValue lvalue); |
| 2310 | |
| 2311 | RValue EmitAtomicLoad(LValue lvalue, |
| 2312 | AggValueSlot slot = AggValueSlot::ignored()); |
| 2313 | |
| 2314 | void EmitAtomicStore(RValue rvalue, LValue lvalue, bool isInit); |
| 2315 | |
John McCall | 26815d9 | 2010-10-27 20:58:56 +0000 | [diff] [blame] | 2316 | /// EmitToMemory - Change a scalar value from its value |
| 2317 | /// representation to its in-memory representation. |
| 2318 | llvm::Value *EmitToMemory(llvm::Value *Value, QualType Ty); |
| 2319 | |
| 2320 | /// EmitFromMemory - Change a scalar value from its memory |
| 2321 | /// representation to its value representation. |
| 2322 | llvm::Value *EmitFromMemory(llvm::Value *Value, QualType Ty); |
| 2323 | |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 2324 | /// EmitLoadOfScalar - Load a scalar value from an address, taking |
| 2325 | /// care to appropriately convert from the memory representation to |
| 2326 | /// the LLVM value representation. |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 2327 | llvm::Value *EmitLoadOfScalar(llvm::Value *Addr, bool Volatile, |
Dan Gohman | 3d5aff5 | 2010-10-14 23:06:10 +0000 | [diff] [blame] | 2328 | unsigned Alignment, QualType Ty, |
Manman Ren | b37a73d | 2013-04-04 21:53:22 +0000 | [diff] [blame] | 2329 | llvm::MDNode *TBAAInfo = 0, |
| 2330 | QualType TBAABaseTy = QualType(), |
| 2331 | uint64_t TBAAOffset = 0); |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 2332 | |
| 2333 | /// EmitLoadOfScalar - Load a scalar value from an address, taking |
| 2334 | /// care to appropriately convert from the memory representation to |
| 2335 | /// the LLVM value representation. The l-value must be a simple |
| 2336 | /// l-value. |
John McCall | a07398e | 2011-06-16 04:16:24 +0000 | [diff] [blame] | 2337 | llvm::Value *EmitLoadOfScalar(LValue lvalue); |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 2338 | |
| 2339 | /// EmitStoreOfScalar - Store a scalar value to an address, taking |
| 2340 | /// care to appropriately convert from the memory representation to |
| 2341 | /// the LLVM value representation. |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 2342 | void EmitStoreOfScalar(llvm::Value *Value, llvm::Value *Addr, |
Dan Gohman | 3d5aff5 | 2010-10-14 23:06:10 +0000 | [diff] [blame] | 2343 | bool Volatile, unsigned Alignment, QualType Ty, |
Manman Ren | b37a73d | 2013-04-04 21:53:22 +0000 | [diff] [blame] | 2344 | llvm::MDNode *TBAAInfo = 0, bool isInit = false, |
| 2345 | QualType TBAABaseTy = QualType(), |
| 2346 | uint64_t TBAAOffset = 0); |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 2347 | |
| 2348 | /// EmitStoreOfScalar - Store a scalar value to an address, taking |
| 2349 | /// care to appropriately convert from the memory representation to |
| 2350 | /// the LLVM value representation. The l-value must be a simple |
David Chisnall | 7a7ee30 | 2012-01-16 17:27:18 +0000 | [diff] [blame] | 2351 | /// l-value. The isInit flag indicates whether this is an initialization. |
| 2352 | /// If so, atomic qualifiers are ignored and the store is always non-atomic. |
| 2353 | void EmitStoreOfScalar(llvm::Value *value, LValue lvalue, bool isInit=false); |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 2354 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2355 | /// EmitLoadOfLValue - Given an expression that represents a value lvalue, |
| 2356 | /// this method emits the address of the lvalue, then loads the result as an |
| 2357 | /// rvalue, returning the rvalue. |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 2358 | RValue EmitLoadOfLValue(LValue V); |
| 2359 | RValue EmitLoadOfExtVectorElementLValue(LValue V); |
| 2360 | RValue EmitLoadOfBitfieldLValue(LValue LV); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2361 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2362 | /// EmitStoreThroughLValue - Store the specified rvalue into the specified |
| 2363 | /// lvalue, where both are guaranteed to the have the same type, and that type |
| 2364 | /// is 'Ty'. |
David Chisnall | 7a7ee30 | 2012-01-16 17:27:18 +0000 | [diff] [blame] | 2365 | void EmitStoreThroughLValue(RValue Src, LValue Dst, bool isInit=false); |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 2366 | void EmitStoreThroughExtVectorComponentLValue(RValue Src, LValue Dst); |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 2367 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2368 | /// EmitStoreThroughLValue - Store Src into Dst with same constraints as |
| 2369 | /// EmitStoreThroughLValue. |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 2370 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2371 | /// \param Result [out] - If non-null, this will be set to a Value* for the |
| 2372 | /// bit-field contents after the store, appropriate for use as the result of |
| 2373 | /// an assignment to the bit-field. |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 2374 | void EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst, |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 2375 | llvm::Value **Result=0); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2376 | |
John McCall | 83ce9d4 | 2010-11-16 23:07:28 +0000 | [diff] [blame] | 2377 | /// Emit an l-value for an assignment (simple or compound) of complex type. |
| 2378 | LValue EmitComplexAssignmentLValue(const BinaryOperator *E); |
John McCall | 2a41637 | 2010-12-05 02:00:02 +0000 | [diff] [blame] | 2379 | LValue EmitComplexCompoundAssignmentLValue(const CompoundAssignOperator *E); |
John McCall | 83ce9d4 | 2010-11-16 23:07:28 +0000 | [diff] [blame] | 2380 | |
Chris Lattner | fc8f0e1 | 2011-04-15 05:22:18 +0000 | [diff] [blame] | 2381 | // Note: only available for agg return types |
Daniel Dunbar | 80e62c2 | 2008-09-04 03:20:13 +0000 | [diff] [blame] | 2382 | LValue EmitBinaryOperatorLValue(const BinaryOperator *E); |
John McCall | 2a41637 | 2010-12-05 02:00:02 +0000 | [diff] [blame] | 2383 | LValue EmitCompoundAssignmentLValue(const CompoundAssignOperator *E); |
Daniel Dunbar | 5b5c9ef | 2009-02-11 20:59:32 +0000 | [diff] [blame] | 2384 | // Note: only available for agg return types |
Christopher Lamb | 22c940e | 2007-12-29 05:02:41 +0000 | [diff] [blame] | 2385 | LValue EmitCallExprLValue(const CallExpr *E); |
Daniel Dunbar | 5b5c9ef | 2009-02-11 20:59:32 +0000 | [diff] [blame] | 2386 | // Note: only available for agg return types |
| 2387 | LValue EmitVAArgExprLValue(const VAArgExpr *E); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2388 | LValue EmitDeclRefLValue(const DeclRefExpr *E); |
| 2389 | LValue EmitStringLiteralLValue(const StringLiteral *E); |
Chris Lattner | eaf2bb8 | 2009-02-24 22:18:39 +0000 | [diff] [blame] | 2390 | LValue EmitObjCEncodeExprLValue(const ObjCEncodeExpr *E); |
Chris Lattner | d9f6910 | 2008-08-10 01:53:14 +0000 | [diff] [blame] | 2391 | LValue EmitPredefinedLValue(const PredefinedExpr *E); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2392 | LValue EmitUnaryOpLValue(const UnaryOperator *E); |
Richard Smith | a0a628f | 2013-02-23 02:53:19 +0000 | [diff] [blame] | 2393 | LValue EmitArraySubscriptExpr(const ArraySubscriptExpr *E, |
| 2394 | bool Accessed = false); |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 2395 | LValue EmitExtVectorElementExpr(const ExtVectorElementExpr *E); |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 2396 | LValue EmitMemberExpr(const MemberExpr *E); |
Fariborz Jahanian | 820bca4 | 2009-12-09 23:35:29 +0000 | [diff] [blame] | 2397 | LValue EmitObjCIsaExpr(const ObjCIsaExpr *E); |
Eli Friedman | 06e863f | 2008-05-13 23:18:27 +0000 | [diff] [blame] | 2398 | LValue EmitCompoundLiteralLValue(const CompoundLiteralExpr *E); |
Richard Smith | 13ec910 | 2012-05-14 21:57:21 +0000 | [diff] [blame] | 2399 | LValue EmitInitListLValue(const InitListExpr *E); |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 2400 | LValue EmitConditionalOperatorLValue(const AbstractConditionalOperator *E); |
Chris Lattner | 75dfeda | 2009-03-18 18:28:57 +0000 | [diff] [blame] | 2401 | LValue EmitCastLValue(const CastExpr *E); |
Douglas Gregor | ed8abf1 | 2010-07-08 06:14:04 +0000 | [diff] [blame] | 2402 | LValue EmitNullInitializationLValue(const CXXScalarValueInitExpr *E); |
Douglas Gregor | 03e8003 | 2011-06-21 17:03:29 +0000 | [diff] [blame] | 2403 | LValue EmitMaterializeTemporaryExpr(const MaterializeTemporaryExpr *E); |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 2404 | LValue EmitOpaqueValueLValue(const OpaqueValueExpr *e); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2405 | |
Eli Friedman | 377ecc7 | 2012-04-16 03:54:45 +0000 | [diff] [blame] | 2406 | RValue EmitRValueForField(LValue LV, const FieldDecl *FD); |
Anton Korobeynikov | eaf856d | 2012-04-13 11:22:00 +0000 | [diff] [blame] | 2407 | |
John McCall | dd2ecee | 2012-03-10 03:05:10 +0000 | [diff] [blame] | 2408 | class ConstantEmission { |
| 2409 | llvm::PointerIntPair<llvm::Constant*, 1, bool> ValueAndIsReference; |
| 2410 | ConstantEmission(llvm::Constant *C, bool isReference) |
| 2411 | : ValueAndIsReference(C, isReference) {} |
| 2412 | public: |
| 2413 | ConstantEmission() {} |
| 2414 | static ConstantEmission forReference(llvm::Constant *C) { |
| 2415 | return ConstantEmission(C, true); |
| 2416 | } |
| 2417 | static ConstantEmission forValue(llvm::Constant *C) { |
| 2418 | return ConstantEmission(C, false); |
| 2419 | } |
| 2420 | |
David Blaikie | 7247c88 | 2013-05-15 07:37:26 +0000 | [diff] [blame] | 2421 | LLVM_EXPLICIT operator bool() const { return ValueAndIsReference.getOpaqueValue() != 0; } |
John McCall | dd2ecee | 2012-03-10 03:05:10 +0000 | [diff] [blame] | 2422 | |
| 2423 | bool isReference() const { return ValueAndIsReference.getInt(); } |
| 2424 | LValue getReferenceLValue(CodeGenFunction &CGF, Expr *refExpr) const { |
| 2425 | assert(isReference()); |
| 2426 | return CGF.MakeNaturalAlignAddrLValue(ValueAndIsReference.getPointer(), |
| 2427 | refExpr->getType()); |
| 2428 | } |
| 2429 | |
| 2430 | llvm::Constant *getValue() const { |
| 2431 | assert(!isReference()); |
| 2432 | return ValueAndIsReference.getPointer(); |
| 2433 | } |
| 2434 | }; |
| 2435 | |
John McCall | f4b88a4 | 2012-03-10 09:33:50 +0000 | [diff] [blame] | 2436 | ConstantEmission tryEmitAsConstant(DeclRefExpr *refExpr); |
John McCall | dd2ecee | 2012-03-10 03:05:10 +0000 | [diff] [blame] | 2437 | |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 2438 | RValue EmitPseudoObjectRValue(const PseudoObjectExpr *e, |
| 2439 | AggValueSlot slot = AggValueSlot::ignored()); |
| 2440 | LValue EmitPseudoObjectLValue(const PseudoObjectExpr *e); |
| 2441 | |
Daniel Dunbar | 2a03192 | 2009-04-22 05:08:15 +0000 | [diff] [blame] | 2442 | llvm::Value *EmitIvarOffset(const ObjCInterfaceDecl *Interface, |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 2443 | const ObjCIvarDecl *Ivar); |
Eli Friedman | 377ecc7 | 2012-04-16 03:54:45 +0000 | [diff] [blame] | 2444 | LValue EmitLValueForField(LValue Base, const FieldDecl* Field); |
John McCall | f5ebf9b | 2013-05-03 07:33:41 +0000 | [diff] [blame] | 2445 | LValue EmitLValueForLambdaField(const FieldDecl *Field); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2446 | |
Anders Carlsson | 06a2970 | 2010-01-29 05:24:29 +0000 | [diff] [blame] | 2447 | /// EmitLValueForFieldInitialization - Like EmitLValueForField, except that |
| 2448 | /// if the Field is a reference, this will return the address of the reference |
| 2449 | /// and not the address of the value stored in the reference. |
Eli Friedman | 377ecc7 | 2012-04-16 03:54:45 +0000 | [diff] [blame] | 2450 | LValue EmitLValueForFieldInitialization(LValue Base, |
| 2451 | const FieldDecl* Field); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2452 | |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 2453 | LValue EmitLValueForIvar(QualType ObjectTy, |
| 2454 | llvm::Value* Base, const ObjCIvarDecl *Ivar, |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 2455 | unsigned CVRQualifiers); |
| 2456 | |
Anders Carlsson | b58d017 | 2009-05-30 23:23:33 +0000 | [diff] [blame] | 2457 | LValue EmitCXXConstructLValue(const CXXConstructExpr *E); |
Anders Carlsson | e61c9e8 | 2009-05-30 23:30:54 +0000 | [diff] [blame] | 2458 | LValue EmitCXXBindTemporaryLValue(const CXXBindTemporaryExpr *E); |
Eli Friedman | 31a3702 | 2012-02-08 05:34:55 +0000 | [diff] [blame] | 2459 | LValue EmitLambdaLValue(const LambdaExpr *E); |
Mike Stump | c2e84ae | 2009-11-15 08:09:41 +0000 | [diff] [blame] | 2460 | LValue EmitCXXTypeidLValue(const CXXTypeidExpr *E); |
Nico Weber | c5f8046 | 2012-10-11 10:13:44 +0000 | [diff] [blame] | 2461 | LValue EmitCXXUuidofLValue(const CXXUuidofExpr *E); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2462 | |
Daniel Dunbar | 0a04d77 | 2008-08-23 10:51:21 +0000 | [diff] [blame] | 2463 | LValue EmitObjCMessageExprLValue(const ObjCMessageExpr *E); |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 2464 | LValue EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E); |
Chris Lattner | 6545994 | 2009-04-25 19:35:26 +0000 | [diff] [blame] | 2465 | LValue EmitStmtExprLValue(const StmtExpr *E); |
Fariborz Jahanian | 8bfd31f | 2009-10-22 22:57:31 +0000 | [diff] [blame] | 2466 | LValue EmitPointerToDataMemberBinaryExpr(const BinaryOperator *E); |
Fariborz Jahanian | 03b2960 | 2010-06-17 19:56:20 +0000 | [diff] [blame] | 2467 | LValue EmitObjCSelectorLValue(const ObjCSelectorExpr *E); |
John McCall | 189d6ef | 2010-10-09 01:34:31 +0000 | [diff] [blame] | 2468 | void EmitDeclRefExprDbgValue(const DeclRefExpr *E, llvm::Constant *Init); |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 2469 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2470 | //===--------------------------------------------------------------------===// |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 2471 | // Scalar Expression Emission |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2472 | //===--------------------------------------------------------------------===// |
| 2473 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2474 | /// EmitCall - Generate a call of the given function, expecting the given |
| 2475 | /// result type, and using the given argument list which specifies both the |
| 2476 | /// LLVM arguments and the types they were derived from. |
Daniel Dunbar | c0ef9f5 | 2009-02-20 18:06:48 +0000 | [diff] [blame] | 2477 | /// |
Mike Stump | f71d232 | 2009-11-30 20:08:49 +0000 | [diff] [blame] | 2478 | /// \param TargetDecl - If given, the decl of the function in a direct call; |
| 2479 | /// used to set attributes on the call (noreturn, etc.). |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 2480 | RValue EmitCall(const CGFunctionInfo &FnInfo, |
| 2481 | llvm::Value *Callee, |
Anders Carlsson | f3c47c9 | 2009-12-24 19:25:24 +0000 | [diff] [blame] | 2482 | ReturnValueSlot ReturnValue, |
Daniel Dunbar | c0ef9f5 | 2009-02-20 18:06:48 +0000 | [diff] [blame] | 2483 | const CallArgList &Args, |
David Chisnall | dd5c98f | 2010-05-01 11:15:56 +0000 | [diff] [blame] | 2484 | const Decl *TargetDecl = 0, |
David Chisnall | 4b02afc | 2010-05-02 13:41:58 +0000 | [diff] [blame] | 2485 | llvm::Instruction **callOrInvoke = 0); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2486 | |
Anders Carlsson | 31777a2 | 2009-12-24 19:08:58 +0000 | [diff] [blame] | 2487 | RValue EmitCall(QualType FnType, llvm::Value *Callee, |
Anders Carlsson | d2490a9 | 2009-12-24 20:40:36 +0000 | [diff] [blame] | 2488 | ReturnValueSlot ReturnValue, |
Anders Carlsson | 9864771 | 2009-05-27 01:22:39 +0000 | [diff] [blame] | 2489 | CallExpr::const_arg_iterator ArgBeg, |
| 2490 | CallExpr::const_arg_iterator ArgEnd, |
| 2491 | const Decl *TargetDecl = 0); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2492 | RValue EmitCallExpr(const CallExpr *E, |
Anders Carlsson | d2490a9 | 2009-12-24 20:40:36 +0000 | [diff] [blame] | 2493 | ReturnValueSlot ReturnValue = ReturnValueSlot()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2494 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 2495 | llvm::CallInst *EmitRuntimeCall(llvm::Value *callee, |
| 2496 | const Twine &name = ""); |
| 2497 | llvm::CallInst *EmitRuntimeCall(llvm::Value *callee, |
| 2498 | ArrayRef<llvm::Value*> args, |
| 2499 | const Twine &name = ""); |
| 2500 | llvm::CallInst *EmitNounwindRuntimeCall(llvm::Value *callee, |
| 2501 | const Twine &name = ""); |
| 2502 | llvm::CallInst *EmitNounwindRuntimeCall(llvm::Value *callee, |
| 2503 | ArrayRef<llvm::Value*> args, |
| 2504 | const Twine &name = ""); |
| 2505 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 2506 | llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee, |
Chris Lattner | 2d3ba4f | 2011-07-23 17:14:25 +0000 | [diff] [blame] | 2507 | ArrayRef<llvm::Value *> Args, |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 2508 | const Twine &Name = ""); |
Jay Foad | 4c7d9f1 | 2011-07-15 08:37:34 +0000 | [diff] [blame] | 2509 | llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee, |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 2510 | const Twine &Name = ""); |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 2511 | llvm::CallSite EmitRuntimeCallOrInvoke(llvm::Value *callee, |
| 2512 | ArrayRef<llvm::Value*> args, |
| 2513 | const Twine &name = ""); |
| 2514 | llvm::CallSite EmitRuntimeCallOrInvoke(llvm::Value *callee, |
| 2515 | const Twine &name = ""); |
| 2516 | void EmitNoreturnRuntimeCallOrInvoke(llvm::Value *callee, |
| 2517 | ArrayRef<llvm::Value*> args); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 2518 | |
Anders Carlsson | 566abee | 2009-11-13 04:45:41 +0000 | [diff] [blame] | 2519 | llvm::Value *BuildVirtualCall(const CXXMethodDecl *MD, llvm::Value *This, |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 2520 | llvm::Type *Ty); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2521 | llvm::Value *BuildVirtualCall(const CXXDestructorDecl *DD, CXXDtorType Type, |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 2522 | llvm::Value *This, llvm::Type *Ty); |
Fariborz Jahanian | 2726267 | 2011-01-20 17:19:02 +0000 | [diff] [blame] | 2523 | llvm::Value *BuildAppleKextVirtualCall(const CXXMethodDecl *MD, |
| 2524 | NestedNameSpecifier *Qual, |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 2525 | llvm::Type *Ty); |
Fariborz Jahanian | ccd5259 | 2011-02-01 23:22:34 +0000 | [diff] [blame] | 2526 | |
| 2527 | llvm::Value *BuildAppleKextVirtualDestructorCall(const CXXDestructorDecl *DD, |
| 2528 | CXXDtorType Type, |
Fariborz Jahanian | 771c678 | 2011-02-03 19:27:17 +0000 | [diff] [blame] | 2529 | const CXXRecordDecl *RD); |
Anders Carlsson | 566abee | 2009-11-13 04:45:41 +0000 | [diff] [blame] | 2530 | |
Anders Carlsson | b9de2c5 | 2009-05-11 23:37:08 +0000 | [diff] [blame] | 2531 | RValue EmitCXXMemberCall(const CXXMethodDecl *MD, |
Richard Smith | 4def70d | 2012-10-09 19:52:38 +0000 | [diff] [blame] | 2532 | SourceLocation CallLoc, |
Anders Carlsson | b9de2c5 | 2009-05-11 23:37:08 +0000 | [diff] [blame] | 2533 | llvm::Value *Callee, |
Anders Carlsson | a1736c0 | 2009-12-24 21:13:40 +0000 | [diff] [blame] | 2534 | ReturnValueSlot ReturnValue, |
Anders Carlsson | b9de2c5 | 2009-05-11 23:37:08 +0000 | [diff] [blame] | 2535 | llvm::Value *This, |
Timur Iskhodzhanov | 59660c2 | 2013-02-13 08:37:51 +0000 | [diff] [blame] | 2536 | llvm::Value *ImplicitParam, |
| 2537 | QualType ImplicitParamTy, |
Anders Carlsson | b9de2c5 | 2009-05-11 23:37:08 +0000 | [diff] [blame] | 2538 | CallExpr::const_arg_iterator ArgBeg, |
| 2539 | CallExpr::const_arg_iterator ArgEnd); |
Anders Carlsson | a1736c0 | 2009-12-24 21:13:40 +0000 | [diff] [blame] | 2540 | RValue EmitCXXMemberCallExpr(const CXXMemberCallExpr *E, |
| 2541 | ReturnValueSlot ReturnValue); |
| 2542 | RValue EmitCXXMemberPointerCallExpr(const CXXMemberCallExpr *E, |
| 2543 | ReturnValueSlot ReturnValue); |
Ted Kremenek | 5549976 | 2008-06-17 02:43:46 +0000 | [diff] [blame] | 2544 | |
Anders Carlsson | a2447e0 | 2011-05-08 20:32:23 +0000 | [diff] [blame] | 2545 | llvm::Value *EmitCXXOperatorMemberCallee(const CXXOperatorCallExpr *E, |
| 2546 | const CXXMethodDecl *MD, |
| 2547 | llvm::Value *This); |
Anders Carlsson | 0f29463 | 2009-05-27 04:18:27 +0000 | [diff] [blame] | 2548 | RValue EmitCXXOperatorMemberCallExpr(const CXXOperatorCallExpr *E, |
Anders Carlsson | a1736c0 | 2009-12-24 21:13:40 +0000 | [diff] [blame] | 2549 | const CXXMethodDecl *MD, |
| 2550 | ReturnValueSlot ReturnValue); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2551 | |
Peter Collingbourne | 6c0aa5f | 2011-10-06 18:29:37 +0000 | [diff] [blame] | 2552 | RValue EmitCUDAKernelCallExpr(const CUDAKernelCallExpr *E, |
| 2553 | ReturnValueSlot ReturnValue); |
| 2554 | |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2555 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2556 | RValue EmitBuiltinExpr(const FunctionDecl *FD, |
Daniel Dunbar | ef2abfe | 2009-02-16 22:43:43 +0000 | [diff] [blame] | 2557 | unsigned BuiltinID, const CallExpr *E); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2558 | |
Anders Carlsson | a1736c0 | 2009-12-24 21:13:40 +0000 | [diff] [blame] | 2559 | RValue EmitBlockCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue); |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 2560 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2561 | /// EmitTargetBuiltinExpr - Emit the given builtin call. Returns 0 if the call |
| 2562 | /// is unhandled by the current target. |
Daniel Dunbar | f02e9dd | 2008-10-10 00:24:54 +0000 | [diff] [blame] | 2563 | llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
| 2564 | |
Tim Northover | ff920ee | 2013-05-04 07:15:13 +0000 | [diff] [blame] | 2565 | llvm::Value *EmitAArch64BuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
Chris Lattner | 2752c01 | 2010-03-03 19:03:45 +0000 | [diff] [blame] | 2566 | llvm::Value *EmitARMBuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2567 | llvm::Value *EmitNeonCall(llvm::Function *F, |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 2568 | SmallVectorImpl<llvm::Value*> &O, |
Bob Wilson | db3d4d0 | 2010-12-08 22:37:56 +0000 | [diff] [blame] | 2569 | const char *name, |
Nate Begeman | 61eecf5 | 2010-06-14 05:21:25 +0000 | [diff] [blame] | 2570 | unsigned shift = 0, bool rightshift = false); |
Bob Wilson | cf55652 | 2010-12-07 22:40:02 +0000 | [diff] [blame] | 2571 | llvm::Value *EmitNeonSplat(llvm::Value *V, llvm::Constant *Idx); |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 2572 | llvm::Value *EmitNeonShiftVector(llvm::Value *V, llvm::Type *Ty, |
Nate Begeman | 61eecf5 | 2010-06-14 05:21:25 +0000 | [diff] [blame] | 2573 | bool negateForRightShift); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2574 | |
Bill Wendling | 795b100 | 2012-02-22 09:30:11 +0000 | [diff] [blame] | 2575 | llvm::Value *BuildVector(ArrayRef<llvm::Value*> Ops); |
Anders Carlsson | 564f1de | 2007-12-09 23:17:02 +0000 | [diff] [blame] | 2576 | llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
| 2577 | llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2578 | |
Daniel Dunbar | ed7c618 | 2008-08-20 00:28:19 +0000 | [diff] [blame] | 2579 | llvm::Value *EmitObjCProtocolExpr(const ObjCProtocolExpr *E); |
Chris Lattner | 7f02f72 | 2007-08-24 05:35:26 +0000 | [diff] [blame] | 2580 | llvm::Value *EmitObjCStringLiteral(const ObjCStringLiteral *E); |
Patrick Beard | eb382ec | 2012-04-19 00:25:12 +0000 | [diff] [blame] | 2581 | llvm::Value *EmitObjCBoxedExpr(const ObjCBoxedExpr *E); |
Ted Kremenek | ebcb57a | 2012-03-06 20:05:56 +0000 | [diff] [blame] | 2582 | llvm::Value *EmitObjCArrayLiteral(const ObjCArrayLiteral *E); |
| 2583 | llvm::Value *EmitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E); |
| 2584 | llvm::Value *EmitObjCCollectionLiteral(const Expr *E, |
| 2585 | const ObjCMethodDecl *MethodWithObjects); |
Chris Lattner | 8fdf328 | 2008-06-24 17:04:18 +0000 | [diff] [blame] | 2586 | llvm::Value *EmitObjCSelectorExpr(const ObjCSelectorExpr *E); |
John McCall | ef072fd | 2010-05-22 01:48:05 +0000 | [diff] [blame] | 2587 | RValue EmitObjCMessageExpr(const ObjCMessageExpr *E, |
| 2588 | ReturnValueSlot Return = ReturnValueSlot()); |
Chris Lattner | 8fdf328 | 2008-06-24 17:04:18 +0000 | [diff] [blame] | 2589 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2590 | /// Retrieves the default cleanup kind for an ARC cleanup. |
| 2591 | /// Except under -fobjc-arc-eh, ARC cleanups are normal-only. |
| 2592 | CleanupKind getARCCleanupKind() { |
| 2593 | return CGM.getCodeGenOpts().ObjCAutoRefCountExceptions |
| 2594 | ? NormalAndEHCleanup : NormalCleanup; |
| 2595 | } |
| 2596 | |
| 2597 | // ARC primitives. |
| 2598 | void EmitARCInitWeak(llvm::Value *value, llvm::Value *addr); |
| 2599 | void EmitARCDestroyWeak(llvm::Value *addr); |
| 2600 | llvm::Value *EmitARCLoadWeak(llvm::Value *addr); |
| 2601 | llvm::Value *EmitARCLoadWeakRetained(llvm::Value *addr); |
| 2602 | llvm::Value *EmitARCStoreWeak(llvm::Value *value, llvm::Value *addr, |
| 2603 | bool ignored); |
| 2604 | void EmitARCCopyWeak(llvm::Value *dst, llvm::Value *src); |
| 2605 | void EmitARCMoveWeak(llvm::Value *dst, llvm::Value *src); |
| 2606 | llvm::Value *EmitARCRetainAutorelease(QualType type, llvm::Value *value); |
| 2607 | llvm::Value *EmitARCRetainAutoreleaseNonBlock(llvm::Value *value); |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 2608 | llvm::Value *EmitARCStoreStrong(LValue lvalue, llvm::Value *value, |
John McCall | 5b07e80 | 2013-03-13 03:10:54 +0000 | [diff] [blame] | 2609 | bool resultIgnored); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2610 | llvm::Value *EmitARCStoreStrongCall(llvm::Value *addr, llvm::Value *value, |
John McCall | 5b07e80 | 2013-03-13 03:10:54 +0000 | [diff] [blame] | 2611 | bool resultIgnored); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2612 | llvm::Value *EmitARCRetain(QualType type, llvm::Value *value); |
| 2613 | llvm::Value *EmitARCRetainNonBlock(llvm::Value *value); |
John McCall | 348f16f | 2011-10-04 06:23:45 +0000 | [diff] [blame] | 2614 | llvm::Value *EmitARCRetainBlock(llvm::Value *value, bool mandatory); |
John McCall | 5b07e80 | 2013-03-13 03:10:54 +0000 | [diff] [blame] | 2615 | void EmitARCDestroyStrong(llvm::Value *addr, ARCPreciseLifetime_t precise); |
| 2616 | void EmitARCRelease(llvm::Value *value, ARCPreciseLifetime_t precise); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2617 | llvm::Value *EmitARCAutorelease(llvm::Value *value); |
| 2618 | llvm::Value *EmitARCAutoreleaseReturnValue(llvm::Value *value); |
| 2619 | llvm::Value *EmitARCRetainAutoreleaseReturnValue(llvm::Value *value); |
| 2620 | llvm::Value *EmitARCRetainAutoreleasedReturnValue(llvm::Value *value); |
| 2621 | |
| 2622 | std::pair<LValue,llvm::Value*> |
| 2623 | EmitARCStoreAutoreleasing(const BinaryOperator *e); |
| 2624 | std::pair<LValue,llvm::Value*> |
| 2625 | EmitARCStoreStrong(const BinaryOperator *e, bool ignored); |
| 2626 | |
John McCall | 2b014d6 | 2011-10-01 10:32:24 +0000 | [diff] [blame] | 2627 | llvm::Value *EmitObjCThrowOperand(const Expr *expr); |
| 2628 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2629 | llvm::Value *EmitObjCProduceObject(QualType T, llvm::Value *Ptr); |
| 2630 | llvm::Value *EmitObjCConsumeObject(QualType T, llvm::Value *Ptr); |
| 2631 | llvm::Value *EmitObjCExtendObjectLifetime(QualType T, llvm::Value *Ptr); |
| 2632 | |
John McCall | 348f16f | 2011-10-04 06:23:45 +0000 | [diff] [blame] | 2633 | llvm::Value *EmitARCExtendBlockObject(const Expr *expr); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2634 | llvm::Value *EmitARCRetainScalarExpr(const Expr *expr); |
| 2635 | llvm::Value *EmitARCRetainAutoreleaseScalarExpr(const Expr *expr); |
| 2636 | |
John McCall | b6a6079 | 2013-03-23 02:35:54 +0000 | [diff] [blame] | 2637 | void EmitARCIntrinsicUse(llvm::ArrayRef<llvm::Value*> values); |
| 2638 | |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 2639 | static Destroyer destroyARCStrongImprecise; |
| 2640 | static Destroyer destroyARCStrongPrecise; |
| 2641 | static Destroyer destroyARCWeak; |
| 2642 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2643 | void EmitObjCAutoreleasePoolPop(llvm::Value *Ptr); |
| 2644 | llvm::Value *EmitObjCAutoreleasePoolPush(); |
| 2645 | llvm::Value *EmitObjCMRRAutoreleasePoolPush(); |
| 2646 | void EmitObjCAutoreleasePoolCleanup(llvm::Value *Ptr); |
| 2647 | void EmitObjCMRRAutoreleasePoolPop(llvm::Value *Ptr); |
| 2648 | |
Anders Carlsson | 4029ca7 | 2009-05-20 00:24:07 +0000 | [diff] [blame] | 2649 | /// EmitReferenceBindingToExpr - Emits a reference binding to the passed in |
| 2650 | /// expression. Will emit a temporary variable if E is not an LValue. |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2651 | RValue EmitReferenceBindingToExpr(const Expr* E, |
Anders Carlsson | 32f36ba | 2010-06-26 16:35:32 +0000 | [diff] [blame] | 2652 | const NamedDecl *InitializedDecl); |
Anders Carlsson | 3aba093 | 2010-01-31 18:34:51 +0000 | [diff] [blame] | 2653 | |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 2654 | //===--------------------------------------------------------------------===// |
Chris Lattner | bfc0c1a | 2007-08-26 23:13:56 +0000 | [diff] [blame] | 2655 | // Expression Emission |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 2656 | //===--------------------------------------------------------------------===// |
Chris Lattner | bfc0c1a | 2007-08-26 23:13:56 +0000 | [diff] [blame] | 2657 | |
| 2658 | // Expressions are broken into three classes: scalar, complex, aggregate. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2659 | |
| 2660 | /// EmitScalarExpr - Emit the computation of the specified expression of LLVM |
| 2661 | /// scalar type, returning the result. |
Anders Carlsson | 14c5cbf | 2009-08-16 07:36:22 +0000 | [diff] [blame] | 2662 | llvm::Value *EmitScalarExpr(const Expr *E , bool IgnoreResultAssign = false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2663 | |
Chris Lattner | 3707b25 | 2007-08-26 06:48:56 +0000 | [diff] [blame] | 2664 | /// EmitScalarConversion - Emit a conversion from the specified type to the |
| 2665 | /// specified destination type, both of which are LLVM scalar types. |
| 2666 | llvm::Value *EmitScalarConversion(llvm::Value *Src, QualType SrcTy, |
| 2667 | QualType DstTy); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2668 | |
Chris Lattner | 4f1a7b3 | 2007-08-26 16:34:22 +0000 | [diff] [blame] | 2669 | /// EmitComplexToScalarConversion - Emit a conversion from the specified |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2670 | /// complex type to the specified destination type, where the destination type |
| 2671 | /// is an LLVM scalar type. |
Chris Lattner | 4f1a7b3 | 2007-08-26 16:34:22 +0000 | [diff] [blame] | 2672 | llvm::Value *EmitComplexToScalarConversion(ComplexPairTy Src, QualType SrcTy, |
| 2673 | QualType DstTy); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2674 | |
| 2675 | |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 2676 | /// EmitAggExpr - Emit the computation of the specified expression |
| 2677 | /// of aggregate type. The result is computed into the given slot, |
| 2678 | /// which may be null to indicate that the value is not needed. |
John McCall | e0c1168 | 2012-07-02 23:58:38 +0000 | [diff] [blame] | 2679 | void EmitAggExpr(const Expr *E, AggValueSlot AS); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2680 | |
Daniel Dunbar | 18aba0d | 2010-02-05 19:38:31 +0000 | [diff] [blame] | 2681 | /// EmitAggExprToLValue - Emit the computation of the specified expression of |
| 2682 | /// aggregate type into a temporary LValue. |
| 2683 | LValue EmitAggExprToLValue(const Expr *E); |
| 2684 | |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 2685 | /// EmitGCMemmoveCollectable - Emit special API for structs with object |
| 2686 | /// pointers. |
| 2687 | void EmitGCMemmoveCollectable(llvm::Value *DestPtr, llvm::Value *SrcPtr, |
Fariborz Jahanian | 08c3213 | 2009-08-31 19:33:16 +0000 | [diff] [blame] | 2688 | QualType Ty); |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 2689 | |
John McCall | 0c24c80 | 2011-06-24 23:21:27 +0000 | [diff] [blame] | 2690 | /// EmitExtendGCLifetime - Given a pointer to an Objective-C object, |
| 2691 | /// make sure it survives garbage collection until this point. |
| 2692 | void EmitExtendGCLifetime(llvm::Value *object); |
| 2693 | |
Chris Lattner | b6ef18a | 2007-08-21 05:54:00 +0000 | [diff] [blame] | 2694 | /// EmitComplexExpr - Emit the computation of the specified expression of |
Chris Lattner | 23b1cdb | 2007-08-23 23:43:33 +0000 | [diff] [blame] | 2695 | /// complex type, returning the result. |
John McCall | b418d74 | 2010-11-16 10:08:07 +0000 | [diff] [blame] | 2696 | ComplexPairTy EmitComplexExpr(const Expr *E, |
| 2697 | bool IgnoreReal = false, |
| 2698 | bool IgnoreImag = false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2699 | |
John McCall | 9d232c8 | 2013-03-07 21:37:08 +0000 | [diff] [blame] | 2700 | /// EmitComplexExprIntoLValue - Emit the given expression of complex |
| 2701 | /// type and place its result into the specified l-value. |
| 2702 | void EmitComplexExprIntoLValue(const Expr *E, LValue dest, bool isInit); |
Daniel Dunbar | 7f8ea5c | 2008-08-30 05:35:15 +0000 | [diff] [blame] | 2703 | |
John McCall | 9d232c8 | 2013-03-07 21:37:08 +0000 | [diff] [blame] | 2704 | /// EmitStoreOfComplex - Store a complex number into the specified l-value. |
| 2705 | void EmitStoreOfComplex(ComplexPairTy V, LValue dest, bool isInit); |
| 2706 | |
| 2707 | /// EmitLoadOfComplex - Load a complex number from the specified l-value. |
| 2708 | ComplexPairTy EmitLoadOfComplex(LValue src); |
Chris Lattner | 2621fd1 | 2008-05-08 05:58:21 +0000 | [diff] [blame] | 2709 | |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 2710 | /// CreateStaticVarDecl - Create a zero-initialized LLVM global for |
| 2711 | /// a static local variable. |
Chandler Carruth | 0f30a12 | 2012-03-30 19:44:53 +0000 | [diff] [blame] | 2712 | llvm::GlobalVariable *CreateStaticVarDecl(const VarDecl &D, |
| 2713 | const char *Separator, |
| 2714 | llvm::GlobalValue::LinkageTypes Linkage); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2715 | |
Chandler Carruth | 0f30a12 | 2012-03-30 19:44:53 +0000 | [diff] [blame] | 2716 | /// AddInitializerToStaticVarDecl - Add the initializer for 'D' to the |
| 2717 | /// global variable that has already been created for it. If the initializer |
| 2718 | /// has a different type than GV does, this may free GV and return a different |
| 2719 | /// one. Otherwise it just returns GV. |
| 2720 | llvm::GlobalVariable * |
| 2721 | AddInitializerToStaticVarDecl(const VarDecl &D, |
| 2722 | llvm::GlobalVariable *GV); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2723 | |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 2724 | |
Anders Carlsson | 3b2e16b | 2009-08-08 21:45:14 +0000 | [diff] [blame] | 2725 | /// EmitCXXGlobalVarDeclInit - Create the initializer for a C++ |
| 2726 | /// variable with global storage. |
Richard Smith | 7ca4850 | 2012-02-13 22:16:19 +0000 | [diff] [blame] | 2727 | void EmitCXXGlobalVarDeclInit(const VarDecl &D, llvm::Constant *DeclPtr, |
| 2728 | bool PerformInit); |
Anders Carlsson | 3b2e16b | 2009-08-08 21:45:14 +0000 | [diff] [blame] | 2729 | |
John McCall | 20bb175 | 2012-05-01 06:13:13 +0000 | [diff] [blame] | 2730 | /// Call atexit() with a function that passes the given argument to |
| 2731 | /// the given function. |
| 2732 | void registerGlobalDtorWithAtExit(llvm::Constant *fn, llvm::Constant *addr); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2733 | |
John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 2734 | /// Emit code in this function to perform a guarded variable |
| 2735 | /// initialization. Guarded initializations are used when it's not |
| 2736 | /// possible to prove that an initialization will be done exactly |
| 2737 | /// once, e.g. with a static local variable or a static data member |
| 2738 | /// of a class template. |
Chandler Carruth | 0f30a12 | 2012-03-30 19:44:53 +0000 | [diff] [blame] | 2739 | void EmitCXXGuardedInit(const VarDecl &D, llvm::GlobalVariable *DeclPtr, |
Richard Smith | 7ca4850 | 2012-02-13 22:16:19 +0000 | [diff] [blame] | 2740 | bool PerformInit); |
John McCall | 5cd91b5 | 2010-09-08 01:44:27 +0000 | [diff] [blame] | 2741 | |
Daniel Dunbar | efb0fa9 | 2010-03-20 04:15:41 +0000 | [diff] [blame] | 2742 | /// GenerateCXXGlobalInitFunc - Generates code for initializing global |
| 2743 | /// variables. |
| 2744 | void GenerateCXXGlobalInitFunc(llvm::Function *Fn, |
Benjamin Kramer | c7b5f38 | 2013-04-26 21:32:52 +0000 | [diff] [blame] | 2745 | ArrayRef<llvm::Constant *> Decls, |
Richard Smith | b80a16e | 2013-04-19 16:42:07 +0000 | [diff] [blame] | 2746 | llvm::GlobalVariable *Guard = 0); |
Daniel Dunbar | efb0fa9 | 2010-03-20 04:15:41 +0000 | [diff] [blame] | 2747 | |
John McCall | 3f88f68 | 2012-04-06 18:21:03 +0000 | [diff] [blame] | 2748 | /// GenerateCXXGlobalDtorsFunc - Generates code for destroying global |
Daniel Dunbar | efb0fa9 | 2010-03-20 04:15:41 +0000 | [diff] [blame] | 2749 | /// variables. |
John McCall | 3f88f68 | 2012-04-06 18:21:03 +0000 | [diff] [blame] | 2750 | void GenerateCXXGlobalDtorsFunc(llvm::Function *Fn, |
| 2751 | const std::vector<std::pair<llvm::WeakVH, |
| 2752 | llvm::Constant*> > &DtorsAndObjects); |
Daniel Dunbar | efb0fa9 | 2010-03-20 04:15:41 +0000 | [diff] [blame] | 2753 | |
John McCall | d26bc76 | 2011-03-09 04:27:21 +0000 | [diff] [blame] | 2754 | void GenerateCXXGlobalVarDeclInitFunc(llvm::Function *Fn, |
| 2755 | const VarDecl *D, |
Richard Smith | 7ca4850 | 2012-02-13 22:16:19 +0000 | [diff] [blame] | 2756 | llvm::GlobalVariable *Addr, |
| 2757 | bool PerformInit); |
Daniel Dunbar | efb0fa9 | 2010-03-20 04:15:41 +0000 | [diff] [blame] | 2758 | |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 2759 | void EmitCXXConstructExpr(const CXXConstructExpr *E, AggValueSlot Dest); |
Fariborz Jahanian | 3499987 | 2010-11-13 21:53:34 +0000 | [diff] [blame] | 2760 | |
| 2761 | void EmitSynthesizedCXXCopyCtor(llvm::Value *Dest, llvm::Value *Src, |
Fariborz Jahanian | 830937b | 2010-12-02 17:02:11 +0000 | [diff] [blame] | 2762 | const Expr *Exp); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2763 | |
John McCall | 1a343eb | 2011-11-10 08:15:53 +0000 | [diff] [blame] | 2764 | void enterFullExpression(const ExprWithCleanups *E) { |
| 2765 | if (E->getNumObjects() == 0) return; |
| 2766 | enterNonTrivialFullExpression(E); |
| 2767 | } |
| 2768 | void enterNonTrivialFullExpression(const ExprWithCleanups *E); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2769 | |
Richard Smith | 4c71b8c | 2013-05-07 21:53:22 +0000 | [diff] [blame] | 2770 | void EmitCXXThrowExpr(const CXXThrowExpr *E, bool KeepInsertionPoint = true); |
Douglas Gregor | 1eb2e59 | 2010-05-16 00:44:00 +0000 | [diff] [blame] | 2771 | |
Eli Friedman | 4c5d8af | 2012-02-09 03:32:31 +0000 | [diff] [blame] | 2772 | void EmitLambdaExpr(const LambdaExpr *E, AggValueSlot Dest); |
| 2773 | |
Eli Friedman | 276b061 | 2011-10-11 02:20:01 +0000 | [diff] [blame] | 2774 | RValue EmitAtomicExpr(AtomicExpr *E, llvm::Value *Dest = 0); |
| 2775 | |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 2776 | //===--------------------------------------------------------------------===// |
Julien Lerouge | 77f68bb | 2011-09-09 22:41:49 +0000 | [diff] [blame] | 2777 | // Annotations Emission |
| 2778 | //===--------------------------------------------------------------------===// |
| 2779 | |
| 2780 | /// Emit an annotation call (intrinsic or builtin). |
| 2781 | llvm::Value *EmitAnnotationCall(llvm::Value *AnnotationFn, |
| 2782 | llvm::Value *AnnotatedVal, |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 2783 | StringRef AnnotationStr, |
Julien Lerouge | 77f68bb | 2011-09-09 22:41:49 +0000 | [diff] [blame] | 2784 | SourceLocation Location); |
| 2785 | |
| 2786 | /// Emit local annotations for the local variable V, declared by D. |
| 2787 | void EmitVarAnnotations(const VarDecl *D, llvm::Value *V); |
| 2788 | |
| 2789 | /// Emit field annotations for the given field & value. Returns the |
| 2790 | /// annotation result. |
| 2791 | llvm::Value *EmitFieldAnnotations(const FieldDecl *D, llvm::Value *V); |
| 2792 | |
| 2793 | //===--------------------------------------------------------------------===// |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 2794 | // Internal Helpers |
| 2795 | //===--------------------------------------------------------------------===// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2796 | |
Chris Lattner | 0946ccd | 2008-11-11 07:41:27 +0000 | [diff] [blame] | 2797 | /// ContainsLabel - Return true if the statement contains a label in it. If |
| 2798 | /// this statement is not executed normally, it not containing a label means |
| 2799 | /// that we can just remove the code. |
| 2800 | static bool ContainsLabel(const Stmt *S, bool IgnoreCaseStmts = false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2801 | |
Chris Lattner | ef425a6 | 2011-02-28 00:18:40 +0000 | [diff] [blame] | 2802 | /// containsBreak - Return true if the statement contains a break out of it. |
| 2803 | /// If the statement (recursively) contains a switch or loop with a break |
| 2804 | /// inside of it, this is fine. |
| 2805 | static bool containsBreak(const Stmt *S); |
| 2806 | |
Daniel Dunbar | 4bc0455 | 2008-11-12 10:12:14 +0000 | [diff] [blame] | 2807 | /// ConstantFoldsToSimpleInteger - If the specified expression does not fold |
Chris Lattner | c2c9001 | 2011-02-27 23:02:32 +0000 | [diff] [blame] | 2808 | /// to a constant, or if it does but contains a label, return false. If it |
| 2809 | /// constant folds return true and set the boolean result in Result. |
| 2810 | bool ConstantFoldsToSimpleInteger(const Expr *Cond, bool &Result); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2811 | |
Chris Lattner | ef425a6 | 2011-02-28 00:18:40 +0000 | [diff] [blame] | 2812 | /// ConstantFoldsToSimpleInteger - If the specified expression does not fold |
| 2813 | /// to a constant, or if it does but contains a label, return false. If it |
| 2814 | /// constant folds return true and set the folded value. |
Richard Trieu | e1ecdc1 | 2012-07-23 20:21:35 +0000 | [diff] [blame] | 2815 | bool ConstantFoldsToSimpleInteger(const Expr *Cond, llvm::APSInt &Result); |
Chris Lattner | ef425a6 | 2011-02-28 00:18:40 +0000 | [diff] [blame] | 2816 | |
Chris Lattner | 31a0984 | 2008-11-12 08:04:58 +0000 | [diff] [blame] | 2817 | /// EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g. for an |
| 2818 | /// if statement) to the specified blocks. Based on the condition, this might |
| 2819 | /// try to simplify the codegen of the conditional based on the branch. |
Chris Lattner | 9bc47e2 | 2008-11-12 07:46:33 +0000 | [diff] [blame] | 2820 | void EmitBranchOnBoolExpr(const Expr *Cond, llvm::BasicBlock *TrueBlock, |
Daniel Dunbar | 4bc0455 | 2008-11-12 10:12:14 +0000 | [diff] [blame] | 2821 | llvm::BasicBlock *FalseBlock); |
Mike Stump | be07f60 | 2009-12-14 21:58:14 +0000 | [diff] [blame] | 2822 | |
Richard Smith | 4def70d | 2012-10-09 19:52:38 +0000 | [diff] [blame] | 2823 | /// \brief Emit a description of a type in a format suitable for passing to |
| 2824 | /// a runtime sanitizer handler. |
| 2825 | llvm::Constant *EmitCheckTypeDescriptor(QualType T); |
| 2826 | |
| 2827 | /// \brief Convert a value into a format suitable for passing to a runtime |
| 2828 | /// sanitizer handler. |
| 2829 | llvm::Value *EmitCheckValue(llvm::Value *V); |
| 2830 | |
| 2831 | /// \brief Emit a description of a source location in a format suitable for |
| 2832 | /// passing to a runtime sanitizer handler. |
| 2833 | llvm::Constant *EmitCheckSourceLocation(SourceLocation Loc); |
| 2834 | |
Will Dietz | ad95481 | 2012-12-02 19:50:33 +0000 | [diff] [blame] | 2835 | /// \brief Specify under what conditions this check can be recovered |
| 2836 | enum CheckRecoverableKind { |
| 2837 | /// Always terminate program execution if this check fails |
| 2838 | CRK_Unrecoverable, |
| 2839 | /// Check supports recovering, allows user to specify which |
| 2840 | CRK_Recoverable, |
| 2841 | /// Runtime conditionally aborts, always need to support recovery. |
| 2842 | CRK_AlwaysRecoverable |
| 2843 | }; |
| 2844 | |
Richard Smith | cc30561 | 2012-11-01 22:15:34 +0000 | [diff] [blame] | 2845 | /// \brief Create a basic block that will call a handler function in a |
| 2846 | /// sanitizer runtime with the provided arguments, and create a conditional |
| 2847 | /// branch to it. |
Richard Smith | 4def70d | 2012-10-09 19:52:38 +0000 | [diff] [blame] | 2848 | void EmitCheck(llvm::Value *Checked, StringRef CheckName, |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 2849 | ArrayRef<llvm::Constant *> StaticArgs, |
| 2850 | ArrayRef<llvm::Value *> DynamicArgs, |
Will Dietz | ad95481 | 2012-12-02 19:50:33 +0000 | [diff] [blame] | 2851 | CheckRecoverableKind Recoverable); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2852 | |
Richard Smith | cc30561 | 2012-11-01 22:15:34 +0000 | [diff] [blame] | 2853 | /// \brief Create a basic block that will call the trap intrinsic, and emit a |
| 2854 | /// conditional branch to it, for the -ftrapv checks. |
Chad Rosier | 78d85b1 | 2013-01-29 23:31:22 +0000 | [diff] [blame] | 2855 | void EmitTrapCheck(llvm::Value *Checked); |
Richard Smith | cc30561 | 2012-11-01 22:15:34 +0000 | [diff] [blame] | 2856 | |
Anders Carlsson | 21c9ad9 | 2010-03-30 03:27:09 +0000 | [diff] [blame] | 2857 | /// EmitCallArg - Emit a single call argument. |
John McCall | 413ebdb | 2011-03-11 20:59:21 +0000 | [diff] [blame] | 2858 | void EmitCallArg(CallArgList &args, const Expr *E, QualType ArgType); |
Anders Carlsson | 21c9ad9 | 2010-03-30 03:27:09 +0000 | [diff] [blame] | 2859 | |
John McCall | 2736071 | 2010-05-26 22:34:26 +0000 | [diff] [blame] | 2860 | /// EmitDelegateCallArg - We are performing a delegate call; that |
| 2861 | /// is, the current function is delegating to another one. Produce |
| 2862 | /// a r-value suitable for passing the given parameter. |
John McCall | 413ebdb | 2011-03-11 20:59:21 +0000 | [diff] [blame] | 2863 | void EmitDelegateCallArg(CallArgList &args, const VarDecl *param); |
John McCall | 2736071 | 2010-05-26 22:34:26 +0000 | [diff] [blame] | 2864 | |
Peter Collingbourne | c5096cb | 2011-10-27 19:19:51 +0000 | [diff] [blame] | 2865 | /// SetFPAccuracy - Set the minimum required accuracy of the given floating |
| 2866 | /// point operation, expressed as the maximum relative error in ulp. |
Duncan Sands | 8250016 | 2012-04-10 08:23:07 +0000 | [diff] [blame] | 2867 | void SetFPAccuracy(llvm::Value *Val, float Accuracy); |
Peter Collingbourne | c5096cb | 2011-10-27 19:19:51 +0000 | [diff] [blame] | 2868 | |
Chris Lattner | 31a0984 | 2008-11-12 08:04:58 +0000 | [diff] [blame] | 2869 | private: |
Rafael Espindola | c3f8955 | 2012-03-24 16:50:34 +0000 | [diff] [blame] | 2870 | llvm::MDNode *getRangeForLoadFromType(QualType Ty); |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 2871 | void EmitReturnOfRValue(RValue RV, QualType Ty); |
| 2872 | |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 2873 | /// ExpandTypeFromArgs - Reconstruct a structure of type \arg Ty |
| 2874 | /// from function arguments into \arg Dst. See ABIArgInfo::Expand. |
| 2875 | /// |
| 2876 | /// \param AI - The first function argument of the expansion. |
| 2877 | /// \return The argument following the last expanded function |
| 2878 | /// argument. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2879 | llvm::Function::arg_iterator |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 2880 | ExpandTypeFromArgs(QualType Ty, LValue Dst, |
| 2881 | llvm::Function::arg_iterator AI); |
| 2882 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2883 | /// ExpandTypeToArgs - Expand an RValue \arg Src, with the LLVM type for \arg |
| 2884 | /// Ty, into individual arguments on the provided vector \arg Args. See |
| 2885 | /// ABIArgInfo::Expand. |
| 2886 | void ExpandTypeToArgs(QualType Ty, RValue Src, |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 2887 | SmallVector<llvm::Value*, 16> &Args, |
Chris Lattner | 811bf36 | 2011-07-12 06:29:11 +0000 | [diff] [blame] | 2888 | llvm::FunctionType *IRFuncTy); |
Anders Carlsson | c8c7b18 | 2009-01-11 19:40:10 +0000 | [diff] [blame] | 2889 | |
Chad Rosier | 42b6055 | 2012-08-23 20:00:18 +0000 | [diff] [blame] | 2890 | llvm::Value* EmitAsmInput(const TargetInfo::ConstraintInfo &Info, |
Anders Carlsson | c8c7b18 | 2009-01-11 19:40:10 +0000 | [diff] [blame] | 2891 | const Expr *InputExpr, std::string &ConstraintStr); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2892 | |
Chad Rosier | 42b6055 | 2012-08-23 20:00:18 +0000 | [diff] [blame] | 2893 | llvm::Value* EmitAsmInputLValue(const TargetInfo::ConstraintInfo &Info, |
Eli Friedman | 6d7cfd7 | 2010-07-16 00:55:21 +0000 | [diff] [blame] | 2894 | LValue InputValue, QualType InputType, |
| 2895 | std::string &ConstraintStr); |
| 2896 | |
Anders Carlsson | 0139bb9 | 2009-04-08 20:47:54 +0000 | [diff] [blame] | 2897 | /// EmitCallArgs - Emit call arguments for a function. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2898 | /// The CallArgTypeInfo parameter is used for iterating over the known |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2899 | /// argument types of the function being called. |
| 2900 | template<typename T> |
| 2901 | void EmitCallArgs(CallArgList& Args, const T* CallArgTypeInfo, |
Anders Carlsson | 0139bb9 | 2009-04-08 20:47:54 +0000 | [diff] [blame] | 2902 | CallExpr::const_arg_iterator ArgBeg, |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2903 | CallExpr::const_arg_iterator ArgEnd) { |
| 2904 | CallExpr::const_arg_iterator Arg = ArgBeg; |
Anders Carlsson | 0139bb9 | 2009-04-08 20:47:54 +0000 | [diff] [blame] | 2905 | |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2906 | // First, use the argument types that the type info knows about |
| 2907 | if (CallArgTypeInfo) { |
| 2908 | for (typename T::arg_type_iterator I = CallArgTypeInfo->arg_type_begin(), |
| 2909 | E = CallArgTypeInfo->arg_type_end(); I != E; ++I, ++Arg) { |
Eli Friedman | 44b0a3e | 2009-11-18 03:42:04 +0000 | [diff] [blame] | 2910 | assert(Arg != ArgEnd && "Running over edge of argument list!"); |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2911 | QualType ArgType = *I; |
Fariborz Jahanian | 745da3a | 2010-09-24 17:30:16 +0000 | [diff] [blame] | 2912 | #ifndef NDEBUG |
| 2913 | QualType ActualArgType = Arg->getType(); |
| 2914 | if (ArgType->isPointerType() && ActualArgType->isPointerType()) { |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2915 | QualType ActualBaseType = |
Fariborz Jahanian | 745da3a | 2010-09-24 17:30:16 +0000 | [diff] [blame] | 2916 | ActualArgType->getAs<PointerType>()->getPointeeType(); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2917 | QualType ArgBaseType = |
Fariborz Jahanian | 745da3a | 2010-09-24 17:30:16 +0000 | [diff] [blame] | 2918 | ArgType->getAs<PointerType>()->getPointeeType(); |
| 2919 | if (ArgBaseType->isVariableArrayType()) { |
| 2920 | if (const VariableArrayType *VAT = |
| 2921 | getContext().getAsVariableArrayType(ActualBaseType)) { |
| 2922 | if (!VAT->getSizeExpr()) |
| 2923 | ActualArgType = ArgType; |
| 2924 | } |
| 2925 | } |
| 2926 | } |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2927 | assert(getContext().getCanonicalType(ArgType.getNonReferenceType()). |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2928 | getTypePtr() == |
Fariborz Jahanian | 745da3a | 2010-09-24 17:30:16 +0000 | [diff] [blame] | 2929 | getContext().getCanonicalType(ActualArgType).getTypePtr() && |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2930 | "type mismatch in call argument!"); |
Fariborz Jahanian | 745da3a | 2010-09-24 17:30:16 +0000 | [diff] [blame] | 2931 | #endif |
John McCall | 413ebdb | 2011-03-11 20:59:21 +0000 | [diff] [blame] | 2932 | EmitCallArg(Args, *Arg, ArgType); |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2933 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2934 | |
| 2935 | // Either we've emitted all the call args, or we have a call to a |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2936 | // variadic function. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2937 | assert((Arg == ArgEnd || CallArgTypeInfo->isVariadic()) && |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2938 | "Extra arguments in non-variadic function!"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2939 | |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2940 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2941 | |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2942 | // If we still have any arguments, emit them using the type of the argument. |
John McCall | 413ebdb | 2011-03-11 20:59:21 +0000 | [diff] [blame] | 2943 | for (; Arg != ArgEnd; ++Arg) |
| 2944 | EmitCallArg(Args, *Arg, Arg->getType()); |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2945 | } |
John McCall | 492c4f9 | 2010-03-03 04:15:11 +0000 | [diff] [blame] | 2946 | |
| 2947 | const TargetCodeGenInfo &getTargetHooks() const { |
| 2948 | return CGM.getTargetCodeGenInfo(); |
| 2949 | } |
John McCall | 744016d | 2010-07-06 23:57:41 +0000 | [diff] [blame] | 2950 | |
| 2951 | void EmitDeclMetadata(); |
John McCall | f0c11f7 | 2011-03-31 08:03:29 +0000 | [diff] [blame] | 2952 | |
| 2953 | CodeGenModule::ByrefHelpers * |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 2954 | buildByrefHelpers(llvm::StructType &byrefType, |
John McCall | f0c11f7 | 2011-03-31 08:03:29 +0000 | [diff] [blame] | 2955 | const AutoVarEmission &emission); |
Dan Gohman | b49bd27 | 2012-02-16 00:57:37 +0000 | [diff] [blame] | 2956 | |
| 2957 | void AddObjCARCExceptionMetadata(llvm::Instruction *Inst); |
Jay Foad | f4c3db1 | 2012-03-02 18:34:30 +0000 | [diff] [blame] | 2958 | |
Eli Friedman | ea93e40 | 2012-08-23 03:10:17 +0000 | [diff] [blame] | 2959 | /// GetPointeeAlignment - Given an expression with a pointer type, emit the |
| 2960 | /// value and compute our best estimate of the alignment of the pointee. |
| 2961 | std::pair<llvm::Value*, unsigned> EmitPointerWithAlignment(const Expr *Addr); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2962 | }; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2963 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 2964 | /// Helper class with most of the code for saving a value for a |
| 2965 | /// conditional expression cleanup. |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 2966 | struct DominatingLLVMValue { |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 2967 | typedef llvm::PointerIntPair<llvm::Value*, 1, bool> saved_type; |
| 2968 | |
| 2969 | /// Answer whether the given value needs extra work to be saved. |
| 2970 | static bool needsSaving(llvm::Value *value) { |
| 2971 | // If it's not an instruction, we don't need to save. |
| 2972 | if (!isa<llvm::Instruction>(value)) return false; |
| 2973 | |
| 2974 | // If it's an instruction in the entry block, we don't need to save. |
| 2975 | llvm::BasicBlock *block = cast<llvm::Instruction>(value)->getParent(); |
| 2976 | return (block != &block->getParent()->getEntryBlock()); |
| 2977 | } |
| 2978 | |
| 2979 | /// Try to save the given value. |
| 2980 | static saved_type save(CodeGenFunction &CGF, llvm::Value *value) { |
| 2981 | if (!needsSaving(value)) return saved_type(value, false); |
| 2982 | |
| 2983 | // Otherwise we need an alloca. |
| 2984 | llvm::Value *alloca = |
| 2985 | CGF.CreateTempAlloca(value->getType(), "cond-cleanup.save"); |
| 2986 | CGF.Builder.CreateStore(value, alloca); |
| 2987 | |
| 2988 | return saved_type(alloca, true); |
| 2989 | } |
| 2990 | |
| 2991 | static llvm::Value *restore(CodeGenFunction &CGF, saved_type value) { |
| 2992 | if (!value.getInt()) return value.getPointer(); |
| 2993 | return CGF.Builder.CreateLoad(value.getPointer()); |
| 2994 | } |
| 2995 | }; |
| 2996 | |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 2997 | /// A partial specialization of DominatingValue for llvm::Values that |
| 2998 | /// might be llvm::Instructions. |
| 2999 | template <class T> struct DominatingPointer<T,true> : DominatingLLVMValue { |
| 3000 | typedef T *type; |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 3001 | static type restore(CodeGenFunction &CGF, saved_type value) { |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 3002 | return static_cast<T*>(DominatingLLVMValue::restore(CGF, value)); |
| 3003 | } |
| 3004 | }; |
| 3005 | |
| 3006 | /// A specialization of DominatingValue for RValue. |
| 3007 | template <> struct DominatingValue<RValue> { |
| 3008 | typedef RValue type; |
| 3009 | class saved_type { |
| 3010 | enum Kind { ScalarLiteral, ScalarAddress, AggregateLiteral, |
| 3011 | AggregateAddress, ComplexAddress }; |
| 3012 | |
| 3013 | llvm::Value *Value; |
| 3014 | Kind K; |
| 3015 | saved_type(llvm::Value *v, Kind k) : Value(v), K(k) {} |
| 3016 | |
| 3017 | public: |
| 3018 | static bool needsSaving(RValue value); |
| 3019 | static saved_type save(CodeGenFunction &CGF, RValue value); |
| 3020 | RValue restore(CodeGenFunction &CGF); |
| 3021 | |
| 3022 | // implementations in CGExprCXX.cpp |
| 3023 | }; |
| 3024 | |
| 3025 | static bool needsSaving(type value) { |
| 3026 | return saved_type::needsSaving(value); |
| 3027 | } |
| 3028 | static saved_type save(CodeGenFunction &CGF, type value) { |
| 3029 | return saved_type::save(CGF, value); |
| 3030 | } |
| 3031 | static type restore(CodeGenFunction &CGF, saved_type value) { |
| 3032 | return value.restore(CGF); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 3033 | } |
| 3034 | }; |
| 3035 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 3036 | } // end namespace CodeGen |
| 3037 | } // end namespace clang |
Fariborz Jahanian | 4e1524b | 2012-01-29 20:27:13 +0000 | [diff] [blame] | 3038 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 3039 | #endif |