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" |
| 26 | #include "clang/Basic/TargetInfo.h" |
| 27 | #include "clang/Frontend/CodeGenOptions.h" |
| 28 | #include "llvm/ADT/ArrayRef.h" |
| 29 | #include "llvm/ADT/DenseMap.h" |
| 30 | #include "llvm/ADT/SmallVector.h" |
| 31 | #include "llvm/Support/Debug.h" |
| 32 | #include "llvm/Support/ValueHandle.h" |
Daniel Dunbar | 8f2926b | 2008-08-23 03:46:30 +0000 | [diff] [blame] | 33 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 34 | namespace llvm { |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 35 | class BasicBlock; |
Benjamin Kramer | f21efe9 | 2009-08-11 17:46:57 +0000 | [diff] [blame] | 36 | class LLVMContext; |
David Chisnall | dd5c98f | 2010-05-01 11:15:56 +0000 | [diff] [blame] | 37 | class MDNode; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 38 | class Module; |
Daniel Dunbar | 898d508 | 2008-09-30 01:06:03 +0000 | [diff] [blame] | 39 | class SwitchInst; |
Daniel Dunbar | 259e9cc | 2009-10-19 01:21:05 +0000 | [diff] [blame] | 40 | class Twine; |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 41 | class Value; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 42 | class CallSite; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 43 | } |
| 44 | |
| 45 | namespace clang { |
| 46 | class ASTContext; |
John McCall | 1a343eb | 2011-11-10 08:15:53 +0000 | [diff] [blame] | 47 | class BlockDecl; |
Anders Carlsson | 7267c16 | 2009-05-29 21:03:38 +0000 | [diff] [blame] | 48 | class CXXDestructorDecl; |
Richard Smith | ad762fc | 2011-04-14 22:09:26 +0000 | [diff] [blame] | 49 | class CXXForRangeStmt; |
Anders Carlsson | 6815e94 | 2009-09-27 18:58:34 +0000 | [diff] [blame] | 50 | class CXXTryStmt; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 51 | class Decl; |
Chris Lattner | ad8dcf4 | 2011-02-17 07:39:24 +0000 | [diff] [blame] | 52 | class LabelDecl; |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 53 | class EnumConstantDecl; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 54 | class FunctionDecl; |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 55 | class FunctionProtoType; |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 56 | class LabelStmt; |
Fariborz Jahanian | 679a502 | 2009-01-10 21:06:09 +0000 | [diff] [blame] | 57 | class ObjCContainerDecl; |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 58 | class ObjCInterfaceDecl; |
| 59 | class ObjCIvarDecl; |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 60 | class ObjCMethodDecl; |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 61 | class ObjCImplementationDecl; |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 62 | class ObjCPropertyImplDecl; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 63 | class TargetInfo; |
John McCall | 492c4f9 | 2010-03-03 04:15:11 +0000 | [diff] [blame] | 64 | class TargetCodeGenInfo; |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 65 | class VarDecl; |
Chris Lattner | 16f0049 | 2009-04-26 01:32:48 +0000 | [diff] [blame] | 66 | class ObjCForCollectionStmt; |
| 67 | class ObjCAtTryStmt; |
| 68 | class ObjCAtThrowStmt; |
| 69 | class ObjCAtSynchronizedStmt; |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 70 | class ObjCAutoreleasePoolStmt; |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 71 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 72 | namespace CodeGen { |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 73 | class CodeGenTypes; |
Daniel Dunbar | bb36d33 | 2009-02-02 21:43:58 +0000 | [diff] [blame] | 74 | class CGFunctionInfo; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 75 | class CGRecordLayout; |
John McCall | ee50429 | 2010-05-21 04:11:14 +0000 | [diff] [blame] | 76 | class CGBlockInfo; |
John McCall | 4c40d98 | 2010-08-31 07:33:07 +0000 | [diff] [blame] | 77 | class CGCXXABI; |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 78 | class BlockFlags; |
| 79 | class BlockFieldFlags; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 80 | |
John McCall | 9d232c8 | 2013-03-07 21:37:08 +0000 | [diff] [blame] | 81 | /// The kind of evaluation to perform on values of a particular |
| 82 | /// type. Basically, is the code in CGExprScalar, CGExprComplex, or |
| 83 | /// CGExprAgg? |
| 84 | /// |
| 85 | /// TODO: should vectors maybe be split out into their own thing? |
| 86 | enum TypeEvaluationKind { |
| 87 | TEK_Scalar, |
| 88 | TEK_Complex, |
| 89 | TEK_Aggregate |
| 90 | }; |
| 91 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 92 | /// A branch fixup. These are required when emitting a goto to a |
| 93 | /// label which hasn't been emitted yet. The goto is optimistically |
| 94 | /// emitted as a branch to the basic block for the label, and (if it |
| 95 | /// occurs in a scope with non-trivial cleanups) a fixup is added to |
| 96 | /// the innermost cleanup. When a (normal) cleanup is popped, any |
| 97 | /// unresolved fixups in that scope are threaded through the cleanup. |
| 98 | struct BranchFixup { |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 99 | /// The block containing the terminator which needs to be modified |
| 100 | /// into a switch if this fixup is resolved into the current scope. |
| 101 | /// If null, LatestBranch points directly to the destination. |
| 102 | llvm::BasicBlock *OptimisticBranchBlock; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 103 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 104 | /// The ultimate destination of the branch. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 105 | /// |
| 106 | /// This can be set to null to indicate that this fixup was |
| 107 | /// successfully resolved. |
| 108 | llvm::BasicBlock *Destination; |
| 109 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 110 | /// The destination index value. |
| 111 | unsigned DestinationIndex; |
| 112 | |
| 113 | /// The initial branch of the fixup. |
| 114 | llvm::BranchInst *InitialBranch; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 115 | }; |
| 116 | |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 117 | template <class T> struct InvariantValue { |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 118 | typedef T type; |
| 119 | typedef T saved_type; |
| 120 | static bool needsSaving(type value) { return false; } |
| 121 | static saved_type save(CodeGenFunction &CGF, type value) { return value; } |
| 122 | static type restore(CodeGenFunction &CGF, saved_type value) { return value; } |
| 123 | }; |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 124 | |
| 125 | /// A metaprogramming class for ensuring that a value will dominate an |
| 126 | /// arbitrary position in a function. |
| 127 | template <class T> struct DominatingValue : InvariantValue<T> {}; |
| 128 | |
| 129 | template <class T, bool mightBeInstruction = |
| 130 | llvm::is_base_of<llvm::Value, T>::value && |
| 131 | !llvm::is_base_of<llvm::Constant, T>::value && |
| 132 | !llvm::is_base_of<llvm::BasicBlock, T>::value> |
| 133 | struct DominatingPointer; |
| 134 | template <class T> struct DominatingPointer<T,false> : InvariantValue<T*> {}; |
| 135 | // template <class T> struct DominatingPointer<T,true> at end of file |
| 136 | |
| 137 | template <class T> struct DominatingValue<T*> : DominatingPointer<T> {}; |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 138 | |
John McCall | cd2d2b7 | 2010-08-13 21:20:51 +0000 | [diff] [blame] | 139 | enum CleanupKind { |
| 140 | EHCleanup = 0x1, |
| 141 | NormalCleanup = 0x2, |
| 142 | NormalAndEHCleanup = EHCleanup | NormalCleanup, |
| 143 | |
| 144 | InactiveCleanup = 0x4, |
| 145 | InactiveEHCleanup = EHCleanup | InactiveCleanup, |
| 146 | InactiveNormalCleanup = NormalCleanup | InactiveCleanup, |
| 147 | InactiveNormalAndEHCleanup = NormalAndEHCleanup | InactiveCleanup |
| 148 | }; |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 149 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 150 | /// A stack of scopes which respond to exceptions, including cleanups |
| 151 | /// and catch blocks. |
| 152 | class EHScopeStack { |
| 153 | public: |
| 154 | /// A saved depth on the scope stack. This is necessary because |
| 155 | /// pushing scopes onto the stack invalidates iterators. |
| 156 | class stable_iterator { |
| 157 | friend class EHScopeStack; |
| 158 | |
| 159 | /// Offset from StartOfData to EndOfBuffer. |
| 160 | ptrdiff_t Size; |
| 161 | |
| 162 | stable_iterator(ptrdiff_t Size) : Size(Size) {} |
| 163 | |
| 164 | public: |
| 165 | static stable_iterator invalid() { return stable_iterator(-1); } |
| 166 | stable_iterator() : Size(-1) {} |
| 167 | |
| 168 | bool isValid() const { return Size >= 0; } |
| 169 | |
John McCall | 838d796 | 2010-08-14 07:46:19 +0000 | [diff] [blame] | 170 | /// Returns true if this scope encloses I. |
| 171 | /// Returns false if I is invalid. |
| 172 | /// This scope must be valid. |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 173 | bool encloses(stable_iterator I) const { return Size <= I.Size; } |
John McCall | 838d796 | 2010-08-14 07:46:19 +0000 | [diff] [blame] | 174 | |
| 175 | /// Returns true if this scope strictly encloses I: that is, |
| 176 | /// if it encloses I and is not I. |
| 177 | /// Returns false is I is invalid. |
| 178 | /// This scope must be valid. |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 179 | bool strictlyEncloses(stable_iterator I) const { return Size < I.Size; } |
John McCall | 1bda662 | 2010-07-21 00:40:03 +0000 | [diff] [blame] | 180 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 181 | friend bool operator==(stable_iterator A, stable_iterator B) { |
| 182 | return A.Size == B.Size; |
| 183 | } |
| 184 | friend bool operator!=(stable_iterator A, stable_iterator B) { |
| 185 | return A.Size != B.Size; |
| 186 | } |
| 187 | }; |
| 188 | |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 189 | /// Information for lazily generating a cleanup. Subclasses must be |
| 190 | /// POD-like: cleanups will not be destructed, and they will be |
| 191 | /// allocated on the cleanup stack and freely copied and moved |
| 192 | /// around. |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 193 | /// |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 194 | /// Cleanup implementations should generally be declared in an |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 195 | /// anonymous namespace. |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 196 | class Cleanup { |
John McCall | c4a1a84 | 2011-07-12 00:15:30 +0000 | [diff] [blame] | 197 | // Anchor the construction vtable. |
| 198 | virtual void anchor(); |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 199 | public: |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 200 | /// Generation flags. |
| 201 | class Flags { |
| 202 | enum { |
| 203 | F_IsForEH = 0x1, |
| 204 | F_IsNormalCleanupKind = 0x2, |
| 205 | F_IsEHCleanupKind = 0x4 |
| 206 | }; |
| 207 | unsigned flags; |
| 208 | |
| 209 | public: |
| 210 | Flags() : flags(0) {} |
| 211 | |
| 212 | /// isForEH - true if the current emission is for an EH cleanup. |
| 213 | bool isForEHCleanup() const { return flags & F_IsForEH; } |
| 214 | bool isForNormalCleanup() const { return !isForEHCleanup(); } |
| 215 | void setIsForEHCleanup() { flags |= F_IsForEH; } |
| 216 | |
| 217 | bool isNormalCleanupKind() const { return flags & F_IsNormalCleanupKind; } |
| 218 | void setIsNormalCleanupKind() { flags |= F_IsNormalCleanupKind; } |
| 219 | |
| 220 | /// isEHCleanupKind - true if the cleanup was pushed as an EH |
| 221 | /// cleanup. |
| 222 | bool isEHCleanupKind() const { return flags & F_IsEHCleanupKind; } |
| 223 | void setIsEHCleanupKind() { flags |= F_IsEHCleanupKind; } |
| 224 | }; |
| 225 | |
John McCall | c4a1a84 | 2011-07-12 00:15:30 +0000 | [diff] [blame] | 226 | // Provide a virtual destructor to suppress a very common warning |
| 227 | // that unfortunately cannot be suppressed without this. Cleanups |
| 228 | // should not rely on this destructor ever being called. |
| 229 | virtual ~Cleanup() {} |
John McCall | 3e29f96 | 2010-07-13 23:19:49 +0000 | [diff] [blame] | 230 | |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 231 | /// Emit the cleanup. For normal cleanups, this is run in the |
| 232 | /// same EH context as when the cleanup was pushed, i.e. the |
| 233 | /// immediately-enclosing context of the cleanup scope. For |
| 234 | /// EH cleanups, this is run in a terminate context. |
| 235 | /// |
Dmitri Gribenko | 70517ca | 2012-08-23 17:58:28 +0000 | [diff] [blame] | 236 | // \param flags cleanup kind. |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 237 | virtual void Emit(CodeGenFunction &CGF, Flags flags) = 0; |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 238 | }; |
| 239 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 240 | /// ConditionalCleanupN stores the saved form of its N parameters, |
| 241 | /// then restores them and performs the cleanup. |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 242 | template <class T, class A0> |
| 243 | class ConditionalCleanup1 : public Cleanup { |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 244 | typedef typename DominatingValue<A0>::saved_type A0_saved; |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 245 | A0_saved a0_saved; |
| 246 | |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 247 | void Emit(CodeGenFunction &CGF, Flags flags) { |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 248 | A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 249 | T(a0).Emit(CGF, flags); |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 250 | } |
| 251 | |
| 252 | public: |
| 253 | ConditionalCleanup1(A0_saved a0) |
| 254 | : a0_saved(a0) {} |
| 255 | }; |
| 256 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 257 | template <class T, class A0, class A1> |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 258 | class ConditionalCleanup2 : public Cleanup { |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 259 | typedef typename DominatingValue<A0>::saved_type A0_saved; |
| 260 | typedef typename DominatingValue<A1>::saved_type A1_saved; |
John McCall | 4bbcbda | 2011-01-26 19:15:39 +0000 | [diff] [blame] | 261 | A0_saved a0_saved; |
| 262 | A1_saved a1_saved; |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 263 | |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 264 | void Emit(CodeGenFunction &CGF, Flags flags) { |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 265 | A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); |
| 266 | A1 a1 = DominatingValue<A1>::restore(CGF, a1_saved); |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 267 | T(a0, a1).Emit(CGF, flags); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 268 | } |
| 269 | |
| 270 | public: |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 271 | ConditionalCleanup2(A0_saved a0, A1_saved a1) |
| 272 | : a0_saved(a0), a1_saved(a1) {} |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 273 | }; |
| 274 | |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 275 | template <class T, class A0, class A1, class A2> |
| 276 | class ConditionalCleanup3 : public Cleanup { |
| 277 | typedef typename DominatingValue<A0>::saved_type A0_saved; |
| 278 | typedef typename DominatingValue<A1>::saved_type A1_saved; |
| 279 | typedef typename DominatingValue<A2>::saved_type A2_saved; |
| 280 | A0_saved a0_saved; |
| 281 | A1_saved a1_saved; |
| 282 | A2_saved a2_saved; |
| 283 | |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 284 | void Emit(CodeGenFunction &CGF, Flags flags) { |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 285 | A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); |
| 286 | A1 a1 = DominatingValue<A1>::restore(CGF, a1_saved); |
| 287 | A2 a2 = DominatingValue<A2>::restore(CGF, a2_saved); |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 288 | T(a0, a1, a2).Emit(CGF, flags); |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 289 | } |
| 290 | |
| 291 | public: |
| 292 | ConditionalCleanup3(A0_saved a0, A1_saved a1, A2_saved a2) |
John McCall | c4a1a84 | 2011-07-12 00:15:30 +0000 | [diff] [blame] | 293 | : a0_saved(a0), a1_saved(a1), a2_saved(a2) {} |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 294 | }; |
| 295 | |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 296 | template <class T, class A0, class A1, class A2, class A3> |
| 297 | class ConditionalCleanup4 : public Cleanup { |
| 298 | typedef typename DominatingValue<A0>::saved_type A0_saved; |
| 299 | typedef typename DominatingValue<A1>::saved_type A1_saved; |
| 300 | typedef typename DominatingValue<A2>::saved_type A2_saved; |
| 301 | typedef typename DominatingValue<A3>::saved_type A3_saved; |
| 302 | A0_saved a0_saved; |
| 303 | A1_saved a1_saved; |
| 304 | A2_saved a2_saved; |
| 305 | A3_saved a3_saved; |
| 306 | |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 307 | void Emit(CodeGenFunction &CGF, Flags flags) { |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 308 | A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); |
| 309 | A1 a1 = DominatingValue<A1>::restore(CGF, a1_saved); |
| 310 | A2 a2 = DominatingValue<A2>::restore(CGF, a2_saved); |
| 311 | A3 a3 = DominatingValue<A3>::restore(CGF, a3_saved); |
John McCall | ad346f4 | 2011-07-12 20:27:29 +0000 | [diff] [blame] | 312 | T(a0, a1, a2, a3).Emit(CGF, flags); |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 313 | } |
| 314 | |
| 315 | public: |
| 316 | ConditionalCleanup4(A0_saved a0, A1_saved a1, A2_saved a2, A3_saved a3) |
| 317 | : a0_saved(a0), a1_saved(a1), a2_saved(a2), a3_saved(a3) {} |
| 318 | }; |
| 319 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 320 | private: |
| 321 | // The implementation for this class is in CGException.h and |
| 322 | // CGException.cpp; the definition is here because it's used as a |
| 323 | // member of CodeGenFunction. |
| 324 | |
| 325 | /// The start of the scope-stack buffer, i.e. the allocated pointer |
| 326 | /// for the buffer. All of these pointers are either simultaneously |
| 327 | /// null or simultaneously valid. |
| 328 | char *StartOfBuffer; |
| 329 | |
| 330 | /// The end of the buffer. |
| 331 | char *EndOfBuffer; |
| 332 | |
| 333 | /// The first valid entry in the buffer. |
| 334 | char *StartOfData; |
| 335 | |
| 336 | /// The innermost normal cleanup on the stack. |
| 337 | stable_iterator InnermostNormalCleanup; |
| 338 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 339 | /// The innermost EH scope on the stack. |
| 340 | stable_iterator InnermostEHScope; |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 341 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 342 | /// The current set of branch fixups. A branch fixup is a jump to |
| 343 | /// an as-yet unemitted label, i.e. a label for which we don't yet |
| 344 | /// know the EH stack depth. Whenever we pop a cleanup, we have |
| 345 | /// to thread all the current branch fixups through it. |
| 346 | /// |
| 347 | /// Fixups are recorded as the Use of the respective branch or |
| 348 | /// switch statement. The use points to the final destination. |
| 349 | /// When popping out of a cleanup, these uses are threaded through |
| 350 | /// the cleanup and adjusted to point to the new cleanup. |
| 351 | /// |
| 352 | /// Note that branches are allowed to jump into protected scopes |
| 353 | /// in certain situations; e.g. the following code is legal: |
| 354 | /// struct A { ~A(); }; // trivial ctor, non-trivial dtor |
| 355 | /// goto foo; |
| 356 | /// A a; |
| 357 | /// foo: |
| 358 | /// bar(); |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 359 | SmallVector<BranchFixup, 8> BranchFixups; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 360 | |
| 361 | char *allocate(size_t Size); |
| 362 | |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 363 | void *pushCleanup(CleanupKind K, size_t DataSize); |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 364 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 365 | public: |
| 366 | EHScopeStack() : StartOfBuffer(0), EndOfBuffer(0), StartOfData(0), |
| 367 | InnermostNormalCleanup(stable_end()), |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 368 | InnermostEHScope(stable_end()) {} |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 369 | ~EHScopeStack() { delete[] StartOfBuffer; } |
| 370 | |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 371 | // Variadic templates would make this not terrible. |
| 372 | |
| 373 | /// Push a lazily-created cleanup on the stack. |
John McCall | 8e3f861 | 2010-07-13 22:12:14 +0000 | [diff] [blame] | 374 | template <class T> |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 375 | void pushCleanup(CleanupKind Kind) { |
| 376 | void *Buffer = pushCleanup(Kind, sizeof(T)); |
| 377 | Cleanup *Obj = new(Buffer) T(); |
John McCall | 8e3f861 | 2010-07-13 22:12:14 +0000 | [diff] [blame] | 378 | (void) Obj; |
| 379 | } |
| 380 | |
| 381 | /// Push a lazily-created cleanup on the stack. |
| 382 | template <class T, class A0> |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 383 | void pushCleanup(CleanupKind Kind, A0 a0) { |
| 384 | void *Buffer = pushCleanup(Kind, sizeof(T)); |
| 385 | Cleanup *Obj = new(Buffer) T(a0); |
John McCall | 8e3f861 | 2010-07-13 22:12:14 +0000 | [diff] [blame] | 386 | (void) Obj; |
| 387 | } |
| 388 | |
| 389 | /// Push a lazily-created cleanup on the stack. |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 390 | template <class T, class A0, class A1> |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 391 | void pushCleanup(CleanupKind Kind, A0 a0, A1 a1) { |
| 392 | void *Buffer = pushCleanup(Kind, sizeof(T)); |
| 393 | Cleanup *Obj = new(Buffer) T(a0, a1); |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 394 | (void) Obj; |
| 395 | } |
| 396 | |
| 397 | /// Push a lazily-created cleanup on the stack. |
| 398 | template <class T, class A0, class A1, class A2> |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 399 | void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2) { |
| 400 | void *Buffer = pushCleanup(Kind, sizeof(T)); |
| 401 | Cleanup *Obj = new(Buffer) T(a0, a1, a2); |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 402 | (void) Obj; |
| 403 | } |
| 404 | |
| 405 | /// Push a lazily-created cleanup on the stack. |
| 406 | template <class T, class A0, class A1, class A2, class A3> |
John McCall | 1f0fca5 | 2010-07-21 07:22:38 +0000 | [diff] [blame] | 407 | void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2, A3 a3) { |
| 408 | void *Buffer = pushCleanup(Kind, sizeof(T)); |
| 409 | Cleanup *Obj = new(Buffer) T(a0, a1, a2, a3); |
John McCall | da65ea8 | 2010-07-13 20:32:21 +0000 | [diff] [blame] | 410 | (void) Obj; |
| 411 | } |
| 412 | |
John McCall | 7719971 | 2010-07-21 05:47:49 +0000 | [diff] [blame] | 413 | /// Push a lazily-created cleanup on the stack. |
| 414 | 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] | 415 | void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2, A3 a3, A4 a4) { |
| 416 | void *Buffer = pushCleanup(Kind, sizeof(T)); |
| 417 | Cleanup *Obj = new(Buffer) T(a0, a1, a2, a3, a4); |
John McCall | 7719971 | 2010-07-21 05:47:49 +0000 | [diff] [blame] | 418 | (void) Obj; |
| 419 | } |
| 420 | |
John McCall | 7d8647f | 2010-09-14 07:57:04 +0000 | [diff] [blame] | 421 | // Feel free to add more variants of the following: |
| 422 | |
| 423 | /// Push a cleanup with non-constant storage requirements on the |
| 424 | /// stack. The cleanup type must provide an additional static method: |
| 425 | /// static size_t getExtraSize(size_t); |
| 426 | /// The argument to this method will be the value N, which will also |
| 427 | /// be passed as the first argument to the constructor. |
| 428 | /// |
| 429 | /// The data stored in the extra storage must obey the same |
| 430 | /// restrictions as normal cleanup member data. |
| 431 | /// |
| 432 | /// The pointer returned from this method is valid until the cleanup |
| 433 | /// stack is modified. |
| 434 | template <class T, class A0, class A1, class A2> |
| 435 | T *pushCleanupWithExtra(CleanupKind Kind, size_t N, A0 a0, A1 a1, A2 a2) { |
| 436 | void *Buffer = pushCleanup(Kind, sizeof(T) + T::getExtraSize(N)); |
| 437 | return new (Buffer) T(N, a0, a1, a2); |
| 438 | } |
| 439 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 440 | /// 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] | 441 | void popCleanup(); |
| 442 | |
| 443 | /// Push a set of catch handlers on the stack. The catch is |
| 444 | /// uninitialized and will need to have the given number of handlers |
| 445 | /// set on it. |
| 446 | class EHCatchScope *pushCatch(unsigned NumHandlers); |
| 447 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 448 | /// 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] | 449 | void popCatch(); |
| 450 | |
| 451 | /// Push an exceptions filter on the stack. |
| 452 | class EHFilterScope *pushFilter(unsigned NumFilters); |
| 453 | |
| 454 | /// Pops an exceptions filter off the stack. |
| 455 | void popFilter(); |
| 456 | |
| 457 | /// Push a terminate handler on the stack. |
| 458 | void pushTerminate(); |
| 459 | |
| 460 | /// Pops a terminate handler off the stack. |
| 461 | void popTerminate(); |
| 462 | |
| 463 | /// Determines whether the exception-scopes stack is empty. |
| 464 | bool empty() const { return StartOfData == EndOfBuffer; } |
| 465 | |
| 466 | bool requiresLandingPad() const { |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 467 | return InnermostEHScope != stable_end(); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 468 | } |
| 469 | |
| 470 | /// Determines whether there are any normal cleanups on the stack. |
| 471 | bool hasNormalCleanups() const { |
| 472 | return InnermostNormalCleanup != stable_end(); |
| 473 | } |
| 474 | |
| 475 | /// Returns the innermost normal cleanup on the stack, or |
| 476 | /// stable_end() if there are no normal cleanups. |
| 477 | stable_iterator getInnermostNormalCleanup() const { |
| 478 | return InnermostNormalCleanup; |
| 479 | } |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 480 | stable_iterator getInnermostActiveNormalCleanup() const; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 481 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 482 | stable_iterator getInnermostEHScope() const { |
| 483 | return InnermostEHScope; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 484 | } |
| 485 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 486 | stable_iterator getInnermostActiveEHScope() const; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 487 | |
| 488 | /// An unstable reference to a scope-stack depth. Invalidated by |
| 489 | /// pushes but not pops. |
| 490 | class iterator; |
| 491 | |
| 492 | /// Returns an iterator pointing to the innermost EH scope. |
| 493 | iterator begin() const; |
| 494 | |
| 495 | /// Returns an iterator pointing to the outermost EH scope. |
| 496 | iterator end() const; |
| 497 | |
| 498 | /// Create a stable reference to the top of the EH stack. The |
| 499 | /// returned reference is valid until that scope is popped off the |
| 500 | /// stack. |
| 501 | stable_iterator stable_begin() const { |
| 502 | return stable_iterator(EndOfBuffer - StartOfData); |
| 503 | } |
| 504 | |
| 505 | /// Create a stable reference to the bottom of the EH stack. |
| 506 | static stable_iterator stable_end() { |
| 507 | return stable_iterator(0); |
| 508 | } |
| 509 | |
| 510 | /// Translates an iterator into a stable_iterator. |
| 511 | stable_iterator stabilize(iterator it) const; |
| 512 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 513 | /// Turn a stable reference to a scope depth into a unstable pointer |
| 514 | /// to the EH stack. |
| 515 | iterator find(stable_iterator save) const; |
| 516 | |
| 517 | /// Removes the cleanup pointed to by the given stable_iterator. |
| 518 | void removeCleanup(stable_iterator save); |
| 519 | |
| 520 | /// Add a branch fixup to the current cleanup scope. |
| 521 | BranchFixup &addBranchFixup() { |
| 522 | assert(hasNormalCleanups() && "adding fixup in scope without cleanups"); |
| 523 | BranchFixups.push_back(BranchFixup()); |
| 524 | return BranchFixups.back(); |
| 525 | } |
| 526 | |
| 527 | unsigned getNumBranchFixups() const { return BranchFixups.size(); } |
| 528 | BranchFixup &getBranchFixup(unsigned I) { |
| 529 | assert(I < getNumBranchFixups()); |
| 530 | return BranchFixups[I]; |
| 531 | } |
| 532 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 533 | /// Pops lazily-removed fixups from the end of the list. This |
| 534 | /// should only be called by procedures which have just popped a |
| 535 | /// cleanup or resolved one or more fixups. |
| 536 | void popNullFixups(); |
| 537 | |
| 538 | /// Clears the branch-fixups list. This should only be called by |
John McCall | 8abdbd8 | 2010-09-18 02:24:39 +0000 | [diff] [blame] | 539 | /// ResolveAllBranchFixups. |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 540 | void clearFixups() { BranchFixups.clear(); } |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 541 | }; |
| 542 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 543 | /// CodeGenFunction - This class organizes the per-function state that is used |
| 544 | /// while generating LLVM code. |
John McCall | 5936e33 | 2011-02-15 09:22:45 +0000 | [diff] [blame] | 545 | class CodeGenFunction : public CodeGenTypeCache { |
Dmitri Gribenko | f56faa0 | 2012-09-15 20:20:27 +0000 | [diff] [blame] | 546 | CodeGenFunction(const CodeGenFunction &) LLVM_DELETED_FUNCTION; |
| 547 | void operator=(const CodeGenFunction &) LLVM_DELETED_FUNCTION; |
John McCall | 4c40d98 | 2010-08-31 07:33:07 +0000 | [diff] [blame] | 548 | |
| 549 | friend class CGCXXABI; |
Chris Lattner | bfc0c1a | 2007-08-26 23:13:56 +0000 | [diff] [blame] | 550 | public: |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 551 | /// A jump destination is an abstract label, branching to which may |
| 552 | /// require a jump out through normal cleanups. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 553 | struct JumpDest { |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 554 | JumpDest() : Block(0), ScopeDepth(), Index(0) {} |
| 555 | JumpDest(llvm::BasicBlock *Block, |
| 556 | EHScopeStack::stable_iterator Depth, |
| 557 | unsigned Index) |
| 558 | : Block(Block), ScopeDepth(Depth), Index(Index) {} |
| 559 | |
| 560 | bool isValid() const { return Block != 0; } |
| 561 | llvm::BasicBlock *getBlock() const { return Block; } |
| 562 | EHScopeStack::stable_iterator getScopeDepth() const { return ScopeDepth; } |
| 563 | unsigned getDestIndex() const { return Index; } |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 564 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 565 | // This should be used cautiously. |
| 566 | void setScopeDepth(EHScopeStack::stable_iterator depth) { |
| 567 | ScopeDepth = depth; |
| 568 | } |
| 569 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 570 | private: |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 571 | llvm::BasicBlock *Block; |
| 572 | EHScopeStack::stable_iterator ScopeDepth; |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 573 | unsigned Index; |
| 574 | }; |
| 575 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 576 | CodeGenModule &CGM; // Per-module state. |
Daniel Dunbar | 444be73 | 2009-11-13 05:51:54 +0000 | [diff] [blame] | 577 | const TargetInfo &Target; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 578 | |
Chris Lattner | 58dee10 | 2007-08-21 16:57:55 +0000 | [diff] [blame] | 579 | typedef std::pair<llvm::Value *, llvm::Value *> ComplexPairTy; |
Daniel Dunbar | 45d196b | 2008-11-01 01:53:16 +0000 | [diff] [blame] | 580 | CGBuilderTy Builder; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 581 | |
Chris Lattner | b5437d2 | 2009-04-23 05:30:27 +0000 | [diff] [blame] | 582 | /// CurFuncDecl - Holds the Decl for the current function or ObjC method. |
| 583 | /// This excludes BlockDecls. |
Chris Lattner | 4111024 | 2008-06-17 18:05:57 +0000 | [diff] [blame] | 584 | const Decl *CurFuncDecl; |
Chris Lattner | b5437d2 | 2009-04-23 05:30:27 +0000 | [diff] [blame] | 585 | /// CurCodeDecl - This is the inner-most code context, which includes blocks. |
| 586 | const Decl *CurCodeDecl; |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 587 | const CGFunctionInfo *CurFnInfo; |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 588 | QualType FnRetTy; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 589 | llvm::Function *CurFn; |
| 590 | |
Mike Stump | 6a1e0eb | 2009-12-04 23:26:17 +0000 | [diff] [blame] | 591 | /// CurGD - The GlobalDecl for the current function being compiled. |
| 592 | GlobalDecl CurGD; |
Mike Stump | 6a1e0eb | 2009-12-04 23:26:17 +0000 | [diff] [blame] | 593 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 594 | /// PrologueCleanupDepth - The cleanup depth enclosing all the |
| 595 | /// cleanups associated with the parameters. |
| 596 | EHScopeStack::stable_iterator PrologueCleanupDepth; |
| 597 | |
Daniel Dunbar | 5ca2084 | 2008-09-09 21:00:17 +0000 | [diff] [blame] | 598 | /// ReturnBlock - Unified return block. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 599 | JumpDest ReturnBlock; |
| 600 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 601 | /// ReturnValue - The temporary alloca to hold the return value. This is null |
Sylvestre Ledru | f3477c1 | 2012-09-27 10:16:10 +0000 | [diff] [blame] | 602 | /// iff the function has no return value. |
Eli Friedman | b17daf9 | 2009-12-04 02:43:40 +0000 | [diff] [blame] | 603 | llvm::Value *ReturnValue; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 604 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 605 | /// AllocaInsertPoint - This is an instruction in the entry block before which |
| 606 | /// we prefer to insert allocas. |
Chris Lattner | 481769b | 2009-03-31 22:17:44 +0000 | [diff] [blame] | 607 | llvm::AssertingVH<llvm::Instruction> AllocaInsertPt; |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 608 | |
Nuno Lopes | b3198a8 | 2012-05-08 22:10:46 +0000 | [diff] [blame] | 609 | /// BoundsChecking - Emit run-time bounds checks. Higher values mean |
| 610 | /// potentially higher performance penalties. |
| 611 | unsigned char BoundsChecking; |
| 612 | |
Richard Smith | d6396a6 | 2012-11-05 22:21:05 +0000 | [diff] [blame] | 613 | /// \brief Whether any type-checking sanitizers are enabled. If \c false, |
| 614 | /// calls to EmitTypeCheck can be skipped. |
| 615 | bool SanitizePerformTypeCheck; |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 616 | |
Will Dietz | 4f45bc0 | 2013-01-18 11:30:38 +0000 | [diff] [blame] | 617 | /// \brief Sanitizer options to use for this function. |
| 618 | const SanitizerOptions *SanOpts; |
| 619 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 620 | /// In ARC, whether we should autorelease the return value. |
| 621 | bool AutoreleaseResult; |
| 622 | |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 623 | const CodeGen::CGBlockInfo *BlockInfo; |
| 624 | llvm::Value *BlockPointer; |
| 625 | |
Eli Friedman | cec5ebd | 2012-02-11 02:57:39 +0000 | [diff] [blame] | 626 | llvm::DenseMap<const VarDecl *, FieldDecl *> LambdaCaptureFields; |
| 627 | FieldDecl *LambdaThisCaptureField; |
| 628 | |
Douglas Gregor | 3d91bbc | 2010-05-17 15:52:46 +0000 | [diff] [blame] | 629 | /// \brief A mapping from NRVO variables to the flags used to indicate |
| 630 | /// when the NRVO has been applied to this variable. |
| 631 | llvm::DenseMap<const VarDecl *, llvm::Value *> NRVOFlags; |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 632 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 633 | EHScopeStack EHStack; |
| 634 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 635 | /// i32s containing the indexes of the cleanup destinations. |
| 636 | llvm::AllocaInst *NormalCleanupDest; |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 637 | |
| 638 | unsigned NextCleanupDestIndex; |
| 639 | |
John McCall | 1a343eb | 2011-11-10 08:15:53 +0000 | [diff] [blame] | 640 | /// FirstBlockInfo - The head of a singly-linked-list of block layouts. |
| 641 | CGBlockInfo *FirstBlockInfo; |
| 642 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 643 | /// EHResumeBlock - Unified block containing a call to llvm.eh.resume. |
| 644 | llvm::BasicBlock *EHResumeBlock; |
| 645 | |
Bill Wendling | 285cfd8 | 2011-09-19 20:31:14 +0000 | [diff] [blame] | 646 | /// The exception slot. All landing pads write the current exception pointer |
| 647 | /// into this alloca. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 648 | llvm::Value *ExceptionSlot; |
| 649 | |
Bill Wendling | 285cfd8 | 2011-09-19 20:31:14 +0000 | [diff] [blame] | 650 | /// The selector slot. Under the MandatoryCleanup model, all landing pads |
| 651 | /// write the current selector value into this alloca. |
John McCall | 93c332a | 2011-05-28 21:13:02 +0000 | [diff] [blame] | 652 | llvm::AllocaInst *EHSelectorSlot; |
| 653 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 654 | /// Emits a landing pad for the current EH stack. |
| 655 | llvm::BasicBlock *EmitLandingPad(); |
| 656 | |
| 657 | llvm::BasicBlock *getInvokeDestImpl(); |
| 658 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 659 | template <class T> |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 660 | typename DominatingValue<T>::saved_type saveValueInCond(T value) { |
| 661 | return DominatingValue<T>::save(*this, value); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 662 | } |
| 663 | |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 664 | public: |
Anders Carlsson | fa1f756 | 2009-02-10 06:07:49 +0000 | [diff] [blame] | 665 | /// ObjCEHValueStack - Stack of Objective-C exception values, used for |
| 666 | /// rethrows. |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 667 | SmallVector<llvm::Value*, 8> ObjCEHValueStack; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 668 | |
John McCall | d768e9d | 2011-06-22 02:32:12 +0000 | [diff] [blame] | 669 | /// A class controlling the emission of a finally block. |
| 670 | class FinallyInfo { |
| 671 | /// Where the catchall's edge through the cleanup should go. |
| 672 | JumpDest RethrowDest; |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 673 | |
John McCall | d768e9d | 2011-06-22 02:32:12 +0000 | [diff] [blame] | 674 | /// A function to call to enter the catch. |
| 675 | llvm::Constant *BeginCatchFn; |
| 676 | |
| 677 | /// An i1 variable indicating whether or not the @finally is |
| 678 | /// running for an exception. |
| 679 | llvm::AllocaInst *ForEHVar; |
| 680 | |
| 681 | /// An i8* variable into which the exception pointer to rethrow |
| 682 | /// has been saved. |
| 683 | llvm::AllocaInst *SavedExnVar; |
| 684 | |
| 685 | public: |
| 686 | void enter(CodeGenFunction &CGF, const Stmt *Finally, |
| 687 | llvm::Constant *beginCatchFn, llvm::Constant *endCatchFn, |
| 688 | llvm::Constant *rethrowFn); |
| 689 | void exit(CodeGenFunction &CGF); |
| 690 | }; |
Mike Stump | d88ea56 | 2009-12-09 03:35:49 +0000 | [diff] [blame] | 691 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 692 | /// pushFullExprCleanup - Push a cleanup to be run at the end of the |
| 693 | /// current full-expression. Safe against the possibility that |
| 694 | /// we're currently inside a conditionally-evaluated expression. |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 695 | template <class T, class A0> |
| 696 | void pushFullExprCleanup(CleanupKind kind, A0 a0) { |
| 697 | // If we're not in a conditional branch, or if none of the |
| 698 | // arguments requires saving, then use the unconditional cleanup. |
John McCall | c4a1a84 | 2011-07-12 00:15:30 +0000 | [diff] [blame] | 699 | if (!isInConditionalBranch()) |
| 700 | return EHStack.pushCleanup<T>(kind, a0); |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 701 | |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 702 | typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 703 | |
| 704 | typedef EHScopeStack::ConditionalCleanup1<T, A0> CleanupType; |
| 705 | EHStack.pushCleanup<CleanupType>(kind, a0_saved); |
| 706 | initFullExprCleanup(); |
| 707 | } |
| 708 | |
| 709 | /// pushFullExprCleanup - Push a cleanup to be run at the end of the |
| 710 | /// current full-expression. Safe against the possibility that |
| 711 | /// we're currently inside a conditionally-evaluated expression. |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 712 | template <class T, class A0, class A1> |
| 713 | void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1) { |
| 714 | // If we're not in a conditional branch, or if none of the |
| 715 | // arguments requires saving, then use the unconditional cleanup. |
John McCall | c4a1a84 | 2011-07-12 00:15:30 +0000 | [diff] [blame] | 716 | if (!isInConditionalBranch()) |
| 717 | return EHStack.pushCleanup<T>(kind, a0, a1); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 718 | |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 719 | typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); |
| 720 | typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 721 | |
| 722 | typedef EHScopeStack::ConditionalCleanup2<T, A0, A1> CleanupType; |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 723 | EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved); |
| 724 | initFullExprCleanup(); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 725 | } |
| 726 | |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 727 | /// pushFullExprCleanup - Push a cleanup to be run at the end of the |
| 728 | /// current full-expression. Safe against the possibility that |
| 729 | /// we're currently inside a conditionally-evaluated expression. |
| 730 | template <class T, class A0, class A1, class A2> |
| 731 | void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1, A2 a2) { |
| 732 | // If we're not in a conditional branch, or if none of the |
| 733 | // arguments requires saving, then use the unconditional cleanup. |
| 734 | if (!isInConditionalBranch()) { |
John McCall | c4a1a84 | 2011-07-12 00:15:30 +0000 | [diff] [blame] | 735 | return EHStack.pushCleanup<T>(kind, a0, a1, a2); |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 736 | } |
| 737 | |
| 738 | typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); |
| 739 | typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); |
| 740 | typename DominatingValue<A2>::saved_type a2_saved = saveValueInCond(a2); |
| 741 | |
| 742 | typedef EHScopeStack::ConditionalCleanup3<T, A0, A1, A2> CleanupType; |
| 743 | EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved, a2_saved); |
| 744 | initFullExprCleanup(); |
| 745 | } |
| 746 | |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 747 | /// pushFullExprCleanup - Push a cleanup to be run at the end of the |
| 748 | /// current full-expression. Safe against the possibility that |
| 749 | /// we're currently inside a conditionally-evaluated expression. |
| 750 | template <class T, class A0, class A1, class A2, class A3> |
| 751 | void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1, A2 a2, A3 a3) { |
| 752 | // If we're not in a conditional branch, or if none of the |
| 753 | // arguments requires saving, then use the unconditional cleanup. |
| 754 | if (!isInConditionalBranch()) { |
| 755 | return EHStack.pushCleanup<T>(kind, a0, a1, a2, a3); |
| 756 | } |
| 757 | |
| 758 | typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); |
| 759 | typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); |
| 760 | typename DominatingValue<A2>::saved_type a2_saved = saveValueInCond(a2); |
| 761 | typename DominatingValue<A3>::saved_type a3_saved = saveValueInCond(a3); |
| 762 | |
| 763 | typedef EHScopeStack::ConditionalCleanup4<T, A0, A1, A2, A3> CleanupType; |
| 764 | EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved, |
| 765 | a2_saved, a3_saved); |
| 766 | initFullExprCleanup(); |
| 767 | } |
| 768 | |
John McCall | 6f103ba | 2011-11-10 10:43:54 +0000 | [diff] [blame] | 769 | /// Set up the last cleaup that was pushed as a conditional |
| 770 | /// full-expression cleanup. |
| 771 | void initFullExprCleanup(); |
| 772 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 773 | /// PushDestructorCleanup - Push a cleanup to call the |
| 774 | /// complete-object destructor of an object of the given type at the |
| 775 | /// given address. Does nothing if T is not a C++ class type with a |
| 776 | /// non-trivial destructor. |
| 777 | void PushDestructorCleanup(QualType T, llvm::Value *Addr); |
| 778 | |
John McCall | 81407d4 | 2010-07-21 06:29:51 +0000 | [diff] [blame] | 779 | /// PushDestructorCleanup - Push a cleanup to call the |
| 780 | /// complete-object variant of the given destructor on the object at |
| 781 | /// the given address. |
| 782 | void PushDestructorCleanup(const CXXDestructorDecl *Dtor, |
| 783 | llvm::Value *Addr); |
| 784 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 785 | /// PopCleanupBlock - Will pop the cleanup entry on the stack and |
| 786 | /// process all branch fixups. |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 787 | void PopCleanupBlock(bool FallThroughIsBranchThrough = false); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 788 | |
John McCall | 7d8647f | 2010-09-14 07:57:04 +0000 | [diff] [blame] | 789 | /// DeactivateCleanupBlock - Deactivates the given cleanup block. |
| 790 | /// The block cannot be reactivated. Pops it if it's the top of the |
| 791 | /// stack. |
John McCall | 6f103ba | 2011-11-10 10:43:54 +0000 | [diff] [blame] | 792 | /// |
| 793 | /// \param DominatingIP - An instruction which is known to |
| 794 | /// dominate the current IP (if set) and which lies along |
| 795 | /// all paths of execution between the current IP and the |
| 796 | /// the point at which the cleanup comes into scope. |
| 797 | void DeactivateCleanupBlock(EHScopeStack::stable_iterator Cleanup, |
| 798 | llvm::Instruction *DominatingIP); |
John McCall | 7d8647f | 2010-09-14 07:57:04 +0000 | [diff] [blame] | 799 | |
| 800 | /// ActivateCleanupBlock - Activates an initially-inactive cleanup. |
| 801 | /// Cannot be used to resurrect a deactivated cleanup. |
John McCall | 6f103ba | 2011-11-10 10:43:54 +0000 | [diff] [blame] | 802 | /// |
| 803 | /// \param DominatingIP - An instruction which is known to |
| 804 | /// dominate the current IP (if set) and which lies along |
| 805 | /// all paths of execution between the current IP and the |
| 806 | /// the point at which the cleanup comes into scope. |
| 807 | void ActivateCleanupBlock(EHScopeStack::stable_iterator Cleanup, |
| 808 | llvm::Instruction *DominatingIP); |
John McCall | cd2d2b7 | 2010-08-13 21:20:51 +0000 | [diff] [blame] | 809 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 810 | /// \brief Enters a new scope for capturing cleanups, all of which |
| 811 | /// will be executed once the scope is exited. |
| 812 | class RunCleanupsScope { |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 813 | EHScopeStack::stable_iterator CleanupStackDepth; |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 814 | bool OldDidCallStackSave; |
John McCall | ed38313 | 2013-03-01 01:24:35 +0000 | [diff] [blame] | 815 | protected: |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 816 | bool PerformCleanup; |
John McCall | ed38313 | 2013-03-01 01:24:35 +0000 | [diff] [blame] | 817 | private: |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 818 | |
Dmitri Gribenko | f56faa0 | 2012-09-15 20:20:27 +0000 | [diff] [blame] | 819 | RunCleanupsScope(const RunCleanupsScope &) LLVM_DELETED_FUNCTION; |
| 820 | void operator=(const RunCleanupsScope &) LLVM_DELETED_FUNCTION; |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 821 | |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 822 | protected: |
| 823 | CodeGenFunction& CGF; |
Will Dietz | 4f45bc0 | 2013-01-18 11:30:38 +0000 | [diff] [blame] | 824 | |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 825 | public: |
| 826 | /// \brief Enter a new cleanup scope. |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 827 | explicit RunCleanupsScope(CodeGenFunction &CGF) |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 828 | : PerformCleanup(true), CGF(CGF) |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 829 | { |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 830 | CleanupStackDepth = CGF.EHStack.stable_begin(); |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 831 | OldDidCallStackSave = CGF.DidCallStackSave; |
Argyrios Kyrtzidis | 4ada2ca | 2010-09-14 00:42:34 +0000 | [diff] [blame] | 832 | CGF.DidCallStackSave = false; |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 833 | } |
| 834 | |
| 835 | /// \brief Exit this cleanup scope, emitting any accumulated |
| 836 | /// cleanups. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 837 | ~RunCleanupsScope() { |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 838 | if (PerformCleanup) { |
| 839 | CGF.DidCallStackSave = OldDidCallStackSave; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 840 | CGF.PopCleanupBlocks(CleanupStackDepth); |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 841 | } |
| 842 | } |
| 843 | |
| 844 | /// \brief Determine whether this scope requires any cleanups. |
| 845 | bool requiresCleanups() const { |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 846 | return CGF.EHStack.stable_begin() != CleanupStackDepth; |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 847 | } |
| 848 | |
| 849 | /// \brief Force the emission of cleanups now, instead of waiting |
| 850 | /// until this object is destroyed. |
| 851 | void ForceCleanup() { |
| 852 | assert(PerformCleanup && "Already forced cleanup"); |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 853 | CGF.DidCallStackSave = OldDidCallStackSave; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 854 | CGF.PopCleanupBlocks(CleanupStackDepth); |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 855 | PerformCleanup = false; |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 856 | } |
| 857 | }; |
| 858 | |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 859 | class LexicalScope: protected RunCleanupsScope { |
| 860 | SourceRange Range; |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 861 | SmallVector<const LabelDecl*, 4> Labels; |
| 862 | LexicalScope *ParentScope; |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 863 | |
Dmitri Gribenko | f56faa0 | 2012-09-15 20:20:27 +0000 | [diff] [blame] | 864 | LexicalScope(const LexicalScope &) LLVM_DELETED_FUNCTION; |
| 865 | void operator=(const LexicalScope &) LLVM_DELETED_FUNCTION; |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 866 | |
| 867 | public: |
| 868 | /// \brief Enter a new cleanup scope. |
| 869 | explicit LexicalScope(CodeGenFunction &CGF, SourceRange Range) |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 870 | : RunCleanupsScope(CGF), Range(Range), ParentScope(CGF.CurLexicalScope) { |
| 871 | CGF.CurLexicalScope = this; |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 872 | if (CGDebugInfo *DI = CGF.getDebugInfo()) |
| 873 | DI->EmitLexicalBlockStart(CGF.Builder, Range.getBegin()); |
| 874 | } |
| 875 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 876 | void addLabel(const LabelDecl *label) { |
| 877 | assert(PerformCleanup && "adding label to dead scope?"); |
| 878 | Labels.push_back(label); |
| 879 | } |
| 880 | |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 881 | /// \brief Exit this cleanup scope, emitting any accumulated |
| 882 | /// cleanups. |
| 883 | ~LexicalScope() { |
Adrian Prantl | efb72ad | 2013-04-01 19:02:06 +0000 | [diff] [blame] | 884 | if (CGDebugInfo *DI = CGF.getDebugInfo()) |
| 885 | DI->EmitLexicalBlockEnd(CGF.Builder, Range.getEnd()); |
| 886 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 887 | // If we should perform a cleanup, force them now. Note that |
| 888 | // this ends the cleanup scope before rescoping any labels. |
| 889 | if (PerformCleanup) ForceCleanup(); |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 890 | } |
| 891 | |
| 892 | /// \brief Force the emission of cleanups now, instead of waiting |
| 893 | /// until this object is destroyed. |
| 894 | void ForceCleanup() { |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 895 | CGF.CurLexicalScope = ParentScope; |
Adrian Prantl | efb72ad | 2013-04-01 19:02:06 +0000 | [diff] [blame] | 896 | RunCleanupsScope::ForceCleanup(); |
| 897 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 898 | if (!Labels.empty()) |
| 899 | rescopeLabels(); |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 900 | } |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 901 | |
| 902 | void rescopeLabels(); |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 903 | }; |
| 904 | |
Anders Carlsson | 44ec82b | 2010-03-30 03:14:41 +0000 | [diff] [blame] | 905 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 906 | /// PopCleanupBlocks - Takes the old cleanup stack size and emits |
| 907 | /// the cleanup blocks that have been added. |
| 908 | void PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize); |
Anders Carlsson | 44ec82b | 2010-03-30 03:14:41 +0000 | [diff] [blame] | 909 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 910 | void ResolveBranchFixups(llvm::BasicBlock *Target); |
| 911 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 912 | /// The given basic block lies in the current EH scope, but may be a |
| 913 | /// target of a potentially scope-crossing jump; get a stable handle |
| 914 | /// to which we can perform this jump later. |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 915 | JumpDest getJumpDestInCurrentScope(llvm::BasicBlock *Target) { |
John McCall | 413e677 | 2010-07-28 01:07:35 +0000 | [diff] [blame] | 916 | return JumpDest(Target, |
| 917 | EHStack.getInnermostNormalCleanup(), |
| 918 | NextCleanupDestIndex++); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 919 | } |
Anders Carlsson | c71c845 | 2009-02-07 23:50:39 +0000 | [diff] [blame] | 920 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 921 | /// The given basic block lies in the current EH scope, but may be a |
| 922 | /// target of a potentially scope-crossing jump; get a stable handle |
| 923 | /// to which we can perform this jump later. |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 924 | JumpDest getJumpDestInCurrentScope(StringRef Name = StringRef()) { |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 925 | return getJumpDestInCurrentScope(createBasicBlock(Name)); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 926 | } |
| 927 | |
| 928 | /// EmitBranchThroughCleanup - Emit a branch from the current insert |
| 929 | /// block through the normal cleanup handling code (if any) and then |
| 930 | /// on to \arg Dest. |
| 931 | void EmitBranchThroughCleanup(JumpDest Dest); |
Chris Lattner | b11f919 | 2011-04-17 00:54:30 +0000 | [diff] [blame] | 932 | |
| 933 | /// isObviouslyBranchWithoutCleanups - Return true if a branch to the |
| 934 | /// specified destination obviously has no cleanups to run. 'false' is always |
| 935 | /// a conservatively correct answer for this method. |
| 936 | bool isObviouslyBranchWithoutCleanups(JumpDest Dest) const; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 937 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 938 | /// popCatchScope - Pops the catch scope at the top of the EHScope |
| 939 | /// stack, emitting any required code (other than the catch handlers |
| 940 | /// themselves). |
| 941 | void popCatchScope(); |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 942 | |
David Chisnall | c686004 | 2012-11-07 16:50:40 +0000 | [diff] [blame] | 943 | llvm::BasicBlock *getEHResumeBlock(bool isCleanup); |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 944 | llvm::BasicBlock *getEHDispatchBlock(EHScopeStack::stable_iterator scope); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 945 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 946 | /// An object to manage conditionally-evaluated expressions. |
| 947 | class ConditionalEvaluation { |
| 948 | llvm::BasicBlock *StartBB; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 949 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 950 | public: |
| 951 | ConditionalEvaluation(CodeGenFunction &CGF) |
| 952 | : StartBB(CGF.Builder.GetInsertBlock()) {} |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 953 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 954 | void begin(CodeGenFunction &CGF) { |
| 955 | assert(CGF.OutermostConditional != this); |
| 956 | if (!CGF.OutermostConditional) |
| 957 | CGF.OutermostConditional = this; |
| 958 | } |
| 959 | |
| 960 | void end(CodeGenFunction &CGF) { |
| 961 | assert(CGF.OutermostConditional != 0); |
| 962 | if (CGF.OutermostConditional == this) |
| 963 | CGF.OutermostConditional = 0; |
| 964 | } |
| 965 | |
| 966 | /// Returns a block which will be executed prior to each |
| 967 | /// evaluation of the conditional code. |
| 968 | llvm::BasicBlock *getStartingBlock() const { |
| 969 | return StartBB; |
| 970 | } |
| 971 | }; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 972 | |
John McCall | 3019c44 | 2010-09-17 00:50:28 +0000 | [diff] [blame] | 973 | /// isInConditionalBranch - Return true if we're currently emitting |
| 974 | /// one branch or the other of a conditional expression. |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 975 | bool isInConditionalBranch() const { return OutermostConditional != 0; } |
| 976 | |
John McCall | 6f103ba | 2011-11-10 10:43:54 +0000 | [diff] [blame] | 977 | void setBeforeOutermostConditional(llvm::Value *value, llvm::Value *addr) { |
| 978 | assert(isInConditionalBranch()); |
| 979 | llvm::BasicBlock *block = OutermostConditional->getStartingBlock(); |
| 980 | new llvm::StoreInst(value, addr, &block->back()); |
| 981 | } |
| 982 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 983 | /// An RAII object to record that we're evaluating a statement |
| 984 | /// expression. |
| 985 | class StmtExprEvaluation { |
| 986 | CodeGenFunction &CGF; |
| 987 | |
| 988 | /// We have to save the outermost conditional: cleanups in a |
| 989 | /// statement expression aren't conditional just because the |
| 990 | /// StmtExpr is. |
| 991 | ConditionalEvaluation *SavedOutermostConditional; |
| 992 | |
| 993 | public: |
| 994 | StmtExprEvaluation(CodeGenFunction &CGF) |
| 995 | : CGF(CGF), SavedOutermostConditional(CGF.OutermostConditional) { |
| 996 | CGF.OutermostConditional = 0; |
| 997 | } |
| 998 | |
| 999 | ~StmtExprEvaluation() { |
| 1000 | CGF.OutermostConditional = SavedOutermostConditional; |
| 1001 | CGF.EnsureInsertPoint(); |
| 1002 | } |
| 1003 | }; |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1004 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1005 | /// An object which temporarily prevents a value from being |
| 1006 | /// destroyed by aggressive peephole optimizations that assume that |
| 1007 | /// all uses of a value have been realized in the IR. |
| 1008 | class PeepholeProtection { |
| 1009 | llvm::Instruction *Inst; |
| 1010 | friend class CodeGenFunction; |
| 1011 | |
| 1012 | public: |
| 1013 | PeepholeProtection() : Inst(0) {} |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1014 | }; |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1015 | |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1016 | /// A non-RAII class containing all the information about a bound |
| 1017 | /// opaque value. OpaqueValueMapping, below, is a RAII wrapper for |
| 1018 | /// this which makes individual mappings very simple; using this |
| 1019 | /// class directly is useful when you have a variable number of |
| 1020 | /// opaque values or don't want the RAII functionality for some |
| 1021 | /// reason. |
| 1022 | class OpaqueValueMappingData { |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1023 | const OpaqueValueExpr *OpaqueValue; |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1024 | bool BoundLValue; |
| 1025 | CodeGenFunction::PeepholeProtection Protection; |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1026 | |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1027 | OpaqueValueMappingData(const OpaqueValueExpr *ov, |
| 1028 | bool boundLValue) |
| 1029 | : OpaqueValue(ov), BoundLValue(boundLValue) {} |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1030 | public: |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1031 | OpaqueValueMappingData() : OpaqueValue(0) {} |
| 1032 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1033 | static bool shouldBindAsLValue(const Expr *expr) { |
John McCall | a5493f8 | 2011-11-08 22:54:08 +0000 | [diff] [blame] | 1034 | // gl-values should be bound as l-values for obvious reasons. |
| 1035 | // Records should be bound as l-values because IR generation |
| 1036 | // always keeps them in memory. Expressions of function type |
| 1037 | // act exactly like l-values but are formally required to be |
| 1038 | // r-values in C. |
| 1039 | return expr->isGLValue() || |
| 1040 | expr->getType()->isRecordType() || |
| 1041 | expr->getType()->isFunctionType(); |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1042 | } |
| 1043 | |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1044 | static OpaqueValueMappingData bind(CodeGenFunction &CGF, |
| 1045 | const OpaqueValueExpr *ov, |
| 1046 | const Expr *e) { |
| 1047 | if (shouldBindAsLValue(ov)) |
| 1048 | return bind(CGF, ov, CGF.EmitLValue(e)); |
| 1049 | return bind(CGF, ov, CGF.EmitAnyExpr(e)); |
| 1050 | } |
| 1051 | |
| 1052 | static OpaqueValueMappingData bind(CodeGenFunction &CGF, |
| 1053 | const OpaqueValueExpr *ov, |
| 1054 | const LValue &lv) { |
| 1055 | assert(shouldBindAsLValue(ov)); |
| 1056 | CGF.OpaqueLValues.insert(std::make_pair(ov, lv)); |
| 1057 | return OpaqueValueMappingData(ov, true); |
| 1058 | } |
| 1059 | |
| 1060 | static OpaqueValueMappingData bind(CodeGenFunction &CGF, |
| 1061 | const OpaqueValueExpr *ov, |
| 1062 | const RValue &rv) { |
| 1063 | assert(!shouldBindAsLValue(ov)); |
| 1064 | CGF.OpaqueRValues.insert(std::make_pair(ov, rv)); |
| 1065 | |
| 1066 | OpaqueValueMappingData data(ov, false); |
| 1067 | |
| 1068 | // Work around an extremely aggressive peephole optimization in |
| 1069 | // EmitScalarConversion which assumes that all other uses of a |
| 1070 | // value are extant. |
| 1071 | data.Protection = CGF.protectFromPeepholes(rv); |
| 1072 | |
| 1073 | return data; |
| 1074 | } |
| 1075 | |
| 1076 | bool isValid() const { return OpaqueValue != 0; } |
| 1077 | void clear() { OpaqueValue = 0; } |
| 1078 | |
| 1079 | void unbind(CodeGenFunction &CGF) { |
| 1080 | assert(OpaqueValue && "no data to unbind!"); |
| 1081 | |
| 1082 | if (BoundLValue) { |
| 1083 | CGF.OpaqueLValues.erase(OpaqueValue); |
| 1084 | } else { |
| 1085 | CGF.OpaqueRValues.erase(OpaqueValue); |
| 1086 | CGF.unprotectFromPeepholes(Protection); |
| 1087 | } |
| 1088 | } |
| 1089 | }; |
| 1090 | |
| 1091 | /// An RAII object to set (and then clear) a mapping for an OpaqueValueExpr. |
| 1092 | class OpaqueValueMapping { |
| 1093 | CodeGenFunction &CGF; |
| 1094 | OpaqueValueMappingData Data; |
| 1095 | |
| 1096 | public: |
| 1097 | static bool shouldBindAsLValue(const Expr *expr) { |
| 1098 | return OpaqueValueMappingData::shouldBindAsLValue(expr); |
| 1099 | } |
| 1100 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1101 | /// Build the opaque value mapping for the given conditional |
| 1102 | /// operator if it's the GNU ?: extension. This is a common |
| 1103 | /// enough pattern that the convenience operator is really |
| 1104 | /// helpful. |
| 1105 | /// |
| 1106 | OpaqueValueMapping(CodeGenFunction &CGF, |
| 1107 | const AbstractConditionalOperator *op) : CGF(CGF) { |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1108 | if (isa<ConditionalOperator>(op)) |
| 1109 | // Leave Data empty. |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1110 | return; |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1111 | |
| 1112 | const BinaryConditionalOperator *e = cast<BinaryConditionalOperator>(op); |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1113 | Data = OpaqueValueMappingData::bind(CGF, e->getOpaqueValue(), |
| 1114 | e->getCommon()); |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1115 | } |
| 1116 | |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1117 | OpaqueValueMapping(CodeGenFunction &CGF, |
| 1118 | const OpaqueValueExpr *opaqueValue, |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1119 | LValue lvalue) |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1120 | : CGF(CGF), Data(OpaqueValueMappingData::bind(CGF, opaqueValue, lvalue)) { |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1121 | } |
| 1122 | |
| 1123 | OpaqueValueMapping(CodeGenFunction &CGF, |
| 1124 | const OpaqueValueExpr *opaqueValue, |
| 1125 | RValue rvalue) |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1126 | : CGF(CGF), Data(OpaqueValueMappingData::bind(CGF, opaqueValue, rvalue)) { |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1127 | } |
| 1128 | |
| 1129 | void pop() { |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1130 | Data.unbind(CGF); |
| 1131 | Data.clear(); |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1132 | } |
| 1133 | |
| 1134 | ~OpaqueValueMapping() { |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 1135 | if (Data.isValid()) Data.unbind(CGF); |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1136 | } |
| 1137 | }; |
Fariborz Jahanian | e220455 | 2010-11-16 19:29:39 +0000 | [diff] [blame] | 1138 | |
| 1139 | /// getByrefValueFieldNumber - Given a declaration, returns the LLVM field |
| 1140 | /// number that holds the value. |
| 1141 | unsigned getByRefValueLLVMField(const ValueDecl *VD) const; |
Fariborz Jahanian | 52a80e1 | 2011-01-26 23:08:27 +0000 | [diff] [blame] | 1142 | |
| 1143 | /// BuildBlockByrefAddress - Computes address location of the |
| 1144 | /// variable which is declared as __block. |
| 1145 | llvm::Value *BuildBlockByrefAddress(llvm::Value *BaseAddr, |
| 1146 | const VarDecl *V); |
Chris Lattner | 7f02f72 | 2007-08-24 05:35:26 +0000 | [diff] [blame] | 1147 | private: |
Chris Lattner | d9becd1 | 2009-10-28 23:59:40 +0000 | [diff] [blame] | 1148 | CGDebugInfo *DebugInfo; |
Devang Patel | aa11289 | 2011-03-07 18:45:56 +0000 | [diff] [blame] | 1149 | bool DisableDebugInfo; |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 1150 | |
Manman Ren | 63fd408 | 2013-03-20 16:59:38 +0000 | [diff] [blame] | 1151 | /// If the current function returns 'this', use the field to keep track of |
| 1152 | /// the callee that returns 'this'. |
| 1153 | llvm::Value *CalleeWithThisReturn; |
| 1154 | |
John McCall | 93c332a | 2011-05-28 21:13:02 +0000 | [diff] [blame] | 1155 | /// DidCallStackSave - Whether llvm.stacksave has been called. Used to avoid |
| 1156 | /// calling llvm.stacksave for multiple VLAs in the same scope. |
| 1157 | bool DidCallStackSave; |
| 1158 | |
Mike Stump | f71d232 | 2009-11-30 20:08:49 +0000 | [diff] [blame] | 1159 | /// IndirectBranch - The first time an indirect goto is seen we create a block |
| 1160 | /// with an indirect branch. Every time we see the address of a label taken, |
| 1161 | /// we add the label to the indirect goto. Every subsequent indirect goto is |
| 1162 | /// codegen'd as a jump to the IndirectBranch's basic block. |
Chris Lattner | d9becd1 | 2009-10-28 23:59:40 +0000 | [diff] [blame] | 1163 | llvm::IndirectBrInst *IndirectBranch; |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 1164 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1165 | /// LocalDeclMap - This keeps track of the LLVM allocas or globals for local C |
| 1166 | /// decls. |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 1167 | typedef llvm::DenseMap<const Decl*, llvm::Value*> DeclMapTy; |
| 1168 | DeclMapTy LocalDeclMap; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1169 | |
| 1170 | /// 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] | 1171 | llvm::DenseMap<const LabelDecl*, JumpDest> LabelMap; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1172 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1173 | // BreakContinueStack - This keeps track of where break and continue |
Anders Carlsson | e4b6d34 | 2009-02-10 05:52:02 +0000 | [diff] [blame] | 1174 | // statements should jump to. |
Chris Lattner | da13870 | 2007-07-16 21:28:45 +0000 | [diff] [blame] | 1175 | struct BreakContinue { |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1176 | BreakContinue(JumpDest Break, JumpDest Continue) |
| 1177 | : BreakBlock(Break), ContinueBlock(Continue) {} |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1178 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1179 | JumpDest BreakBlock; |
| 1180 | JumpDest ContinueBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1181 | }; |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 1182 | SmallVector<BreakContinue, 8> BreakContinueStack; |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 1183 | |
Zhongxing Xu | 170fd49 | 2012-01-14 09:08:15 +0000 | [diff] [blame] | 1184 | /// SwitchInsn - This is nearest current switch instruction. It is null if |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1185 | /// current context is not in a switch. |
Devang Patel | 51b09f2 | 2007-10-04 23:45:31 +0000 | [diff] [blame] | 1186 | llvm::SwitchInst *SwitchInsn; |
| 1187 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1188 | /// CaseRangeBlock - This block holds if condition check for last case |
Devang Patel | 80fd5f9 | 2007-10-09 17:08:50 +0000 | [diff] [blame] | 1189 | /// statement range in current switch instruction. |
Devang Patel | c049e4f | 2007-10-08 20:57:48 +0000 | [diff] [blame] | 1190 | llvm::BasicBlock *CaseRangeBlock; |
| 1191 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1192 | /// OpaqueLValues - Keeps track of the current set of opaque value |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1193 | /// expressions. |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1194 | llvm::DenseMap<const OpaqueValueExpr *, LValue> OpaqueLValues; |
| 1195 | llvm::DenseMap<const OpaqueValueExpr *, RValue> OpaqueRValues; |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1196 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1197 | // VLASizeMap - This keeps track of the associated size for each VLA type. |
Eli Friedman | bbed6b9 | 2009-08-15 02:50:32 +0000 | [diff] [blame] | 1198 | // We track this by the size expression rather than the type itself because |
| 1199 | // in certain situations, like a const qualifier applied to an VLA typedef, |
| 1200 | // multiple VLA types can share the same size expression. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1201 | // FIXME: Maybe this could be a stack of maps that is pushed/popped as we |
| 1202 | // enter/leave scopes. |
Eli Friedman | bbed6b9 | 2009-08-15 02:50:32 +0000 | [diff] [blame] | 1203 | llvm::DenseMap<const Expr*, llvm::Value*> VLASizeMap; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1204 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1205 | /// A block containing a single 'unreachable' instruction. Created |
| 1206 | /// lazily by getUnreachableBlock(). |
| 1207 | llvm::BasicBlock *UnreachableBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1208 | |
Anders Carlsson | f6c56e2 | 2009-11-25 03:15:49 +0000 | [diff] [blame] | 1209 | /// CXXThisDecl - When generating code for a C++ member function, |
| 1210 | /// this will hold the implicit 'this' declaration. |
Eli Friedman | cec5ebd | 2012-02-11 02:57:39 +0000 | [diff] [blame] | 1211 | ImplicitParamDecl *CXXABIThisDecl; |
| 1212 | llvm::Value *CXXABIThisValue; |
John McCall | 2504941 | 2010-02-16 22:04:33 +0000 | [diff] [blame] | 1213 | llvm::Value *CXXThisValue; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1214 | |
Timur Iskhodzhanov | 59660c2 | 2013-02-13 08:37:51 +0000 | [diff] [blame] | 1215 | /// CXXStructorImplicitParamDecl - When generating code for a constructor or |
| 1216 | /// destructor, this will hold the implicit argument (e.g. VTT). |
| 1217 | ImplicitParamDecl *CXXStructorImplicitParamDecl; |
| 1218 | llvm::Value *CXXStructorImplicitParamValue; |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1219 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 1220 | /// OutermostConditional - Points to the outermost active |
| 1221 | /// conditional control. This is used so that we know if a |
| 1222 | /// temporary should be destroyed conditionally. |
| 1223 | ConditionalEvaluation *OutermostConditional; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1224 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 1225 | /// The current lexical scope. |
| 1226 | LexicalScope *CurLexicalScope; |
Anders Carlsson | 7dfa407 | 2009-09-12 02:14:24 +0000 | [diff] [blame] | 1227 | |
| 1228 | /// ByrefValueInfoMap - For each __block variable, contains a pair of the LLVM |
| 1229 | /// type as well as the field number that contains the actual data. |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 1230 | llvm::DenseMap<const ValueDecl *, std::pair<llvm::Type *, |
Anders Carlsson | 7dfa407 | 2009-09-12 02:14:24 +0000 | [diff] [blame] | 1231 | unsigned> > ByRefValueInfo; |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1232 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1233 | llvm::BasicBlock *TerminateLandingPad; |
Mike Stump | 182f383 | 2009-12-10 00:02:42 +0000 | [diff] [blame] | 1234 | llvm::BasicBlock *TerminateHandler; |
Chris Lattner | 83252dc | 2010-07-20 21:07:09 +0000 | [diff] [blame] | 1235 | llvm::BasicBlock *TrapBB; |
Eli Friedman | 9406705 | 2009-12-10 02:21:21 +0000 | [diff] [blame] | 1236 | |
Tanya Lattner | 0df579e | 2012-07-09 22:06:01 +0000 | [diff] [blame] | 1237 | /// Add a kernel metadata node to the named metadata node 'opencl.kernels'. |
| 1238 | /// In the kernel metadata node, reference the kernel function and metadata |
| 1239 | /// nodes for its optional attribute qualifiers (OpenCL 1.1 6.7.2): |
Joey Gouly | 37453b9 | 2013-03-08 09:42:32 +0000 | [diff] [blame] | 1240 | /// - A node for the vec_type_hint(<type>) qualifier contains string |
| 1241 | /// "vec_type_hint", an undefined value of the <type> data type, |
| 1242 | /// 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] | 1243 | /// - A node for the work_group_size_hint(X,Y,Z) qualifier contains string |
| 1244 | /// "work_group_size_hint", and three 32-bit integers X, Y and Z. |
| 1245 | /// - A node for the reqd_work_group_size(X,Y,Z) qualifier contains string |
| 1246 | /// "reqd_work_group_size", and three 32-bit integers X, Y and Z. |
| 1247 | void EmitOpenCLKernelMetadata(const FunctionDecl *FD, |
| 1248 | llvm::Function *Fn); |
| 1249 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1250 | public: |
Fariborz Jahanian | 4904bf4 | 2012-06-26 16:06:38 +0000 | [diff] [blame] | 1251 | CodeGenFunction(CodeGenModule &cgm, bool suppressNewContext=false); |
John McCall | 1a343eb | 2011-11-10 08:15:53 +0000 | [diff] [blame] | 1252 | ~CodeGenFunction(); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1253 | |
John McCall | 1e7fe75 | 2010-09-02 09:58:18 +0000 | [diff] [blame] | 1254 | CodeGenTypes &getTypes() const { return CGM.getTypes(); } |
John McCall | f2aac84 | 2011-05-15 02:34:36 +0000 | [diff] [blame] | 1255 | ASTContext &getContext() const { return CGM.getContext(); } |
Alexey Samsonov | a240df2 | 2012-10-16 07:22:28 +0000 | [diff] [blame] | 1256 | /// Returns true if DebugInfo is actually initialized. |
| 1257 | bool maybeInitializeDebugInfo() { |
| 1258 | if (CGM.getModuleDebugInfo()) { |
| 1259 | DebugInfo = CGM.getModuleDebugInfo(); |
| 1260 | return true; |
| 1261 | } |
| 1262 | return false; |
| 1263 | } |
Devang Patel | aa11289 | 2011-03-07 18:45:56 +0000 | [diff] [blame] | 1264 | CGDebugInfo *getDebugInfo() { |
| 1265 | if (DisableDebugInfo) |
| 1266 | return NULL; |
| 1267 | return DebugInfo; |
| 1268 | } |
| 1269 | void disableDebugInfo() { DisableDebugInfo = true; } |
| 1270 | void enableDebugInfo() { DisableDebugInfo = false; } |
| 1271 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 1272 | bool shouldUseFusedARCCalls() { |
| 1273 | return CGM.getCodeGenOpts().OptimizationLevel == 0; |
| 1274 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1275 | |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 1276 | const LangOptions &getLangOpts() const { return CGM.getLangOpts(); } |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1277 | |
Bill Wendling | 285cfd8 | 2011-09-19 20:31:14 +0000 | [diff] [blame] | 1278 | /// Returns a pointer to the function's exception object and selector slot, |
| 1279 | /// which is assigned in every landing pad. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1280 | llvm::Value *getExceptionSlot(); |
John McCall | 93c332a | 2011-05-28 21:13:02 +0000 | [diff] [blame] | 1281 | llvm::Value *getEHSelectorSlot(); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1282 | |
Bill Wendling | ae27059 | 2011-09-15 18:57:19 +0000 | [diff] [blame] | 1283 | /// Returns the contents of the function's exception object and selector |
| 1284 | /// slots. |
| 1285 | llvm::Value *getExceptionFromSlot(); |
| 1286 | llvm::Value *getSelectorFromSlot(); |
| 1287 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 1288 | llvm::Value *getNormalCleanupDestSlot(); |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 1289 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1290 | llvm::BasicBlock *getUnreachableBlock() { |
| 1291 | if (!UnreachableBlock) { |
| 1292 | UnreachableBlock = createBasicBlock("unreachable"); |
| 1293 | new llvm::UnreachableInst(getLLVMContext(), UnreachableBlock); |
| 1294 | } |
| 1295 | return UnreachableBlock; |
| 1296 | } |
| 1297 | |
| 1298 | llvm::BasicBlock *getInvokeDest() { |
| 1299 | if (!EHStack.requiresLandingPad()) return 0; |
| 1300 | return getInvokeDestImpl(); |
| 1301 | } |
Daniel Dunbar | 9834ffb | 2009-02-23 17:26:39 +0000 | [diff] [blame] | 1302 | |
John McCall | 64aa4b3 | 2013-04-16 22:48:15 +0000 | [diff] [blame] | 1303 | const TargetInfo &getTarget() const { return Target; } |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1304 | llvm::LLVMContext &getLLVMContext() { return CGM.getLLVMContext(); } |
Owen Anderson | 6924382 | 2009-07-13 04:10:07 +0000 | [diff] [blame] | 1305 | |
Daniel Dunbar | 9834ffb | 2009-02-23 17:26:39 +0000 | [diff] [blame] | 1306 | //===--------------------------------------------------------------------===// |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1307 | // Cleanups |
| 1308 | //===--------------------------------------------------------------------===// |
| 1309 | |
| 1310 | typedef void Destroyer(CodeGenFunction &CGF, llvm::Value *addr, QualType ty); |
| 1311 | |
John McCall | 2673c68 | 2011-07-11 08:38:19 +0000 | [diff] [blame] | 1312 | void pushIrregularPartialArrayCleanup(llvm::Value *arrayBegin, |
| 1313 | llvm::Value *arrayEndPointer, |
| 1314 | QualType elementType, |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1315 | Destroyer *destroyer); |
John McCall | 2673c68 | 2011-07-11 08:38:19 +0000 | [diff] [blame] | 1316 | void pushRegularPartialArrayCleanup(llvm::Value *arrayBegin, |
| 1317 | llvm::Value *arrayEnd, |
| 1318 | QualType elementType, |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1319 | Destroyer *destroyer); |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1320 | |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 1321 | void pushDestroy(QualType::DestructionKind dtorKind, |
| 1322 | llvm::Value *addr, QualType type); |
John McCall | 074cae0 | 2013-02-01 05:11:40 +0000 | [diff] [blame] | 1323 | void pushEHDestroy(QualType::DestructionKind dtorKind, |
| 1324 | llvm::Value *addr, QualType type); |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1325 | void pushDestroy(CleanupKind kind, llvm::Value *addr, QualType type, |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1326 | Destroyer *destroyer, bool useEHCleanupForArray); |
| 1327 | void emitDestroy(llvm::Value *addr, QualType type, Destroyer *destroyer, |
John McCall | 2673c68 | 2011-07-11 08:38:19 +0000 | [diff] [blame] | 1328 | bool useEHCleanupForArray); |
John McCall | a91f666 | 2011-07-13 03:01:35 +0000 | [diff] [blame] | 1329 | llvm::Function *generateDestroyHelper(llvm::Constant *addr, |
| 1330 | QualType type, |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1331 | Destroyer *destroyer, |
John McCall | a91f666 | 2011-07-13 03:01:35 +0000 | [diff] [blame] | 1332 | bool useEHCleanupForArray); |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1333 | void emitArrayDestroy(llvm::Value *begin, llvm::Value *end, |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1334 | QualType type, Destroyer *destroyer, |
John McCall | fbf780a | 2011-07-13 08:09:46 +0000 | [diff] [blame] | 1335 | bool checkZeroLength, bool useEHCleanup); |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1336 | |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1337 | Destroyer *getDestroyer(QualType::DestructionKind destructionKind); |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 1338 | |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1339 | /// Determines whether an EH cleanup is required to destroy a type |
| 1340 | /// with the given destruction kind. |
| 1341 | bool needsEHCleanup(QualType::DestructionKind kind) { |
| 1342 | switch (kind) { |
| 1343 | case QualType::DK_none: |
| 1344 | return false; |
| 1345 | case QualType::DK_cxx_destructor: |
| 1346 | case QualType::DK_objc_weak_lifetime: |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 1347 | return getLangOpts().Exceptions; |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1348 | case QualType::DK_objc_strong_lifetime: |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 1349 | return getLangOpts().Exceptions && |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1350 | CGM.getCodeGenOpts().ObjCAutoRefCountExceptions; |
| 1351 | } |
| 1352 | llvm_unreachable("bad destruction kind"); |
| 1353 | } |
| 1354 | |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 1355 | CleanupKind getCleanupKind(QualType::DestructionKind kind) { |
| 1356 | return (needsEHCleanup(kind) ? NormalAndEHCleanup : NormalCleanup); |
| 1357 | } |
| 1358 | |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1359 | //===--------------------------------------------------------------------===// |
Daniel Dunbar | 9834ffb | 2009-02-23 17:26:39 +0000 | [diff] [blame] | 1360 | // Objective-C |
| 1361 | //===--------------------------------------------------------------------===// |
| 1362 | |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 1363 | void GenerateObjCMethod(const ObjCMethodDecl *OMD); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 1364 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1365 | void StartObjCMethod(const ObjCMethodDecl *MD, |
Devang Patel | 8d3f897 | 2011-05-19 23:37:41 +0000 | [diff] [blame] | 1366 | const ObjCContainerDecl *CD, |
| 1367 | SourceLocation StartLoc); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 1368 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1369 | /// GenerateObjCGetter - Synthesize an Objective-C property getter function. |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 1370 | void GenerateObjCGetter(ObjCImplementationDecl *IMP, |
| 1371 | const ObjCPropertyImplDecl *PID); |
John McCall | 1e1f487 | 2011-09-13 03:34:09 +0000 | [diff] [blame] | 1372 | void generateObjCGetterBody(const ObjCImplementationDecl *classImpl, |
Fariborz Jahanian | b6e5fe3 | 2012-01-07 18:56:22 +0000 | [diff] [blame] | 1373 | const ObjCPropertyImplDecl *propImpl, |
Fariborz Jahanian | 490a52b | 2012-05-29 19:56:01 +0000 | [diff] [blame] | 1374 | const ObjCMethodDecl *GetterMothodDecl, |
Fariborz Jahanian | b6e5fe3 | 2012-01-07 18:56:22 +0000 | [diff] [blame] | 1375 | llvm::Constant *AtomicHelperFn); |
Fariborz Jahanian | 2846b97 | 2011-02-18 19:15:13 +0000 | [diff] [blame] | 1376 | |
Fariborz Jahanian | 109dfc6 | 2010-04-28 21:28:56 +0000 | [diff] [blame] | 1377 | void GenerateObjCCtorDtorMethod(ObjCImplementationDecl *IMP, |
| 1378 | ObjCMethodDecl *MD, bool ctor); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 1379 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1380 | /// GenerateObjCSetter - Synthesize an Objective-C property setter function |
| 1381 | /// for the given property. |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 1382 | void GenerateObjCSetter(ObjCImplementationDecl *IMP, |
| 1383 | const ObjCPropertyImplDecl *PID); |
John McCall | 71c758d | 2011-09-10 09:17:20 +0000 | [diff] [blame] | 1384 | void generateObjCSetterBody(const ObjCImplementationDecl *classImpl, |
Fariborz Jahanian | cd93b96 | 2012-01-06 22:33:54 +0000 | [diff] [blame] | 1385 | const ObjCPropertyImplDecl *propImpl, |
| 1386 | llvm::Constant *AtomicHelperFn); |
Fariborz Jahanian | 0b2bd47 | 2010-04-13 00:38:05 +0000 | [diff] [blame] | 1387 | bool IndirectObjCSetterArg(const CGFunctionInfo &FI); |
Fariborz Jahanian | 15bd588 | 2010-04-13 18:32:24 +0000 | [diff] [blame] | 1388 | bool IvarTypeWithAggrGCObjects(QualType Ty); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 1389 | |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 1390 | //===--------------------------------------------------------------------===// |
| 1391 | // Block Bits |
| 1392 | //===--------------------------------------------------------------------===// |
| 1393 | |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 1394 | llvm::Value *EmitBlockLiteral(const BlockExpr *); |
John McCall | 1a343eb | 2011-11-10 08:15:53 +0000 | [diff] [blame] | 1395 | llvm::Value *EmitBlockLiteral(const CGBlockInfo &Info); |
| 1396 | static void destroyBlockInfos(CGBlockInfo *info); |
Blaine Garst | 2a7eb28 | 2010-02-23 21:51:17 +0000 | [diff] [blame] | 1397 | llvm::Constant *BuildDescriptorBlockDecl(const BlockExpr *, |
Fariborz Jahanian | 89ecd41 | 2010-08-04 16:57:49 +0000 | [diff] [blame] | 1398 | const CGBlockInfo &Info, |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 1399 | llvm::StructType *, |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1400 | llvm::Constant *BlockVarLayout); |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 1401 | |
Fariborz Jahanian | 564360b | 2010-06-24 00:08:06 +0000 | [diff] [blame] | 1402 | llvm::Function *GenerateBlockFunction(GlobalDecl GD, |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 1403 | const CGBlockInfo &Info, |
Mike Stump | 6cc88f7 | 2009-03-20 21:53:12 +0000 | [diff] [blame] | 1404 | const Decl *OuterFuncDecl, |
Eli Friedman | 64bee65 | 2012-02-25 02:48:22 +0000 | [diff] [blame] | 1405 | const DeclMapTy &ldm, |
| 1406 | bool IsLambdaConversionToBlock); |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 1407 | |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1408 | llvm::Constant *GenerateCopyHelperFunction(const CGBlockInfo &blockInfo); |
| 1409 | llvm::Constant *GenerateDestroyHelperFunction(const CGBlockInfo &blockInfo); |
Fariborz Jahanian | 20abee6 | 2012-01-10 00:37:01 +0000 | [diff] [blame] | 1410 | llvm::Constant *GenerateObjCAtomicSetterCopyHelperFunction( |
| 1411 | const ObjCPropertyImplDecl *PID); |
| 1412 | llvm::Constant *GenerateObjCAtomicGetterCopyHelperFunction( |
| 1413 | const ObjCPropertyImplDecl *PID); |
Eli Friedman | cae40c4 | 2012-02-28 01:08:45 +0000 | [diff] [blame] | 1414 | llvm::Value *EmitBlockCopyAndAutorelease(llvm::Value *Block, QualType Ty); |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1415 | |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1416 | void BuildBlockRelease(llvm::Value *DeclPtr, BlockFieldFlags flags); |
| 1417 | |
John McCall | 5af02db | 2011-03-31 01:59:53 +0000 | [diff] [blame] | 1418 | class AutoVarEmission; |
| 1419 | |
| 1420 | void emitByrefStructureInit(const AutoVarEmission &emission); |
| 1421 | void enterByrefCleanup(const AutoVarEmission &emission); |
| 1422 | |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 1423 | llvm::Value *LoadBlockStruct() { |
| 1424 | assert(BlockPointer && "no block pointer set!"); |
| 1425 | return BlockPointer; |
| 1426 | } |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 1427 | |
John McCall | ea1471e | 2010-05-20 01:18:31 +0000 | [diff] [blame] | 1428 | void AllocateBlockCXXThisPointer(const CXXThisExpr *E); |
John McCall | f4b88a4 | 2012-03-10 09:33:50 +0000 | [diff] [blame] | 1429 | void AllocateBlockDecl(const DeclRefExpr *E); |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 1430 | llvm::Value *GetAddrOfBlockDecl(const VarDecl *var, bool ByRef); |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 1431 | llvm::Type *BuildByRefType(const VarDecl *var); |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 1432 | |
John McCall | d26bc76 | 2011-03-09 04:27:21 +0000 | [diff] [blame] | 1433 | void GenerateCode(GlobalDecl GD, llvm::Function *Fn, |
| 1434 | const CGFunctionInfo &FnInfo); |
Anders Carlsson | 0ff8baf | 2009-09-11 00:07:24 +0000 | [diff] [blame] | 1435 | void StartFunction(GlobalDecl GD, QualType RetTy, |
Daniel Dunbar | 7c08651 | 2008-09-09 23:14:03 +0000 | [diff] [blame] | 1436 | llvm::Function *Fn, |
John McCall | d26bc76 | 2011-03-09 04:27:21 +0000 | [diff] [blame] | 1437 | const CGFunctionInfo &FnInfo, |
Daniel Dunbar | 2284ac9 | 2008-10-18 18:22:23 +0000 | [diff] [blame] | 1438 | const FunctionArgList &Args, |
Tilmann Scheller | 9c6082f | 2011-03-02 21:36:49 +0000 | [diff] [blame] | 1439 | SourceLocation StartLoc); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 1440 | |
John McCall | 9fc6a77 | 2010-02-19 09:25:03 +0000 | [diff] [blame] | 1441 | void EmitConstructorBody(FunctionArgList &Args); |
| 1442 | void EmitDestructorBody(FunctionArgList &Args); |
Lang Hames | 56c00c4 | 2013-02-17 07:22:09 +0000 | [diff] [blame] | 1443 | void emitImplicitAssignmentOperatorBody(FunctionArgList &Args); |
John McCall | 9fc6a77 | 2010-02-19 09:25:03 +0000 | [diff] [blame] | 1444 | void EmitFunctionBody(FunctionArgList &Args); |
John McCall | a355e07 | 2010-02-18 03:17:58 +0000 | [diff] [blame] | 1445 | |
Eli Friedman | 64bee65 | 2012-02-25 02:48:22 +0000 | [diff] [blame] | 1446 | void EmitForwardingCallToLambda(const CXXRecordDecl *Lambda, |
| 1447 | CallArgList &CallArgs); |
Eli Friedman | bd89f8c | 2012-02-16 01:37:33 +0000 | [diff] [blame] | 1448 | void EmitLambdaToBlockPointerBody(FunctionArgList &Args); |
Eli Friedman | 64bee65 | 2012-02-25 02:48:22 +0000 | [diff] [blame] | 1449 | void EmitLambdaBlockInvokeBody(); |
Douglas Gregor | 27dd7d9 | 2012-02-17 03:02:34 +0000 | [diff] [blame] | 1450 | void EmitLambdaDelegatingInvokeBody(const CXXMethodDecl *MD); |
| 1451 | void EmitLambdaStaticInvokeFunction(const CXXMethodDecl *MD); |
Eli Friedman | bd89f8c | 2012-02-16 01:37:33 +0000 | [diff] [blame] | 1452 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1453 | /// EmitReturnBlock - Emit the unified return block, trying to avoid its |
| 1454 | /// emission when possible. |
David Blaikie | 0a0f93c | 2013-02-01 19:09:49 +0000 | [diff] [blame] | 1455 | void EmitReturnBlock(); |
Daniel Dunbar | 1c1d607 | 2009-01-26 23:27:52 +0000 | [diff] [blame] | 1456 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1457 | /// FinishFunction - Complete IR generation of the current function. It is |
| 1458 | /// 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] | 1459 | void FinishFunction(SourceLocation EndLoc=SourceLocation()); |
Daniel Dunbar | 17b708d | 2008-09-09 23:27:19 +0000 | [diff] [blame] | 1460 | |
Anders Carlsson | 519c328 | 2010-03-24 00:39:18 +0000 | [diff] [blame] | 1461 | /// GenerateThunk - Generate a thunk for the given method. |
John McCall | d26bc76 | 2011-03-09 04:27:21 +0000 | [diff] [blame] | 1462 | void GenerateThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, |
| 1463 | GlobalDecl GD, const ThunkInfo &Thunk); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1464 | |
Eli Friedman | 7dcdf5b | 2011-05-06 17:27:27 +0000 | [diff] [blame] | 1465 | void GenerateVarArgsThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, |
| 1466 | GlobalDecl GD, const ThunkInfo &Thunk); |
| 1467 | |
Douglas Gregor | fb8cc25 | 2010-05-05 05:51:00 +0000 | [diff] [blame] | 1468 | void EmitCtorPrologue(const CXXConstructorDecl *CD, CXXCtorType Type, |
| 1469 | FunctionArgList &Args); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1470 | |
Eli Friedman | b74ed08 | 2012-02-14 02:31:03 +0000 | [diff] [blame] | 1471 | void EmitInitializerForField(FieldDecl *Field, LValue LHS, Expr *Init, |
| 1472 | ArrayRef<VarDecl *> ArrayIndexes); |
| 1473 | |
Anders Carlsson | d103f9f | 2010-03-28 19:40:00 +0000 | [diff] [blame] | 1474 | /// InitializeVTablePointer - Initialize the vtable pointer of the given |
| 1475 | /// subobject. |
| 1476 | /// |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1477 | void InitializeVTablePointer(BaseSubobject Base, |
Anders Carlsson | b3b772e | 2010-04-20 05:22:15 +0000 | [diff] [blame] | 1478 | const CXXRecordDecl *NearestVBase, |
Ken Dyck | d6fb21f | 2011-03-23 01:04:18 +0000 | [diff] [blame] | 1479 | CharUnits OffsetFromNearestVBase, |
Anders Carlsson | d103f9f | 2010-03-28 19:40:00 +0000 | [diff] [blame] | 1480 | llvm::Constant *VTable, |
| 1481 | const CXXRecordDecl *VTableClass); |
| 1482 | |
| 1483 | typedef llvm::SmallPtrSet<const CXXRecordDecl *, 4> VisitedVirtualBasesSetTy; |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1484 | void InitializeVTablePointers(BaseSubobject Base, |
Anders Carlsson | b3b772e | 2010-04-20 05:22:15 +0000 | [diff] [blame] | 1485 | const CXXRecordDecl *NearestVBase, |
Ken Dyck | d6fb21f | 2011-03-23 01:04:18 +0000 | [diff] [blame] | 1486 | CharUnits OffsetFromNearestVBase, |
Anders Carlsson | 603d6d1 | 2010-03-28 21:07:49 +0000 | [diff] [blame] | 1487 | bool BaseIsNonVirtualPrimaryBase, |
| 1488 | llvm::Constant *VTable, |
| 1489 | const CXXRecordDecl *VTableClass, |
| 1490 | VisitedVirtualBasesSetTy& VBases); |
Eli Friedman | 77a259c | 2009-12-08 06:46:18 +0000 | [diff] [blame] | 1491 | |
Anders Carlsson | 603d6d1 | 2010-03-28 21:07:49 +0000 | [diff] [blame] | 1492 | void InitializeVTablePointers(const CXXRecordDecl *ClassDecl); |
Anders Carlsson | d103f9f | 2010-03-28 19:40:00 +0000 | [diff] [blame] | 1493 | |
Dan Gohman | 043fb9a | 2010-10-26 18:44:08 +0000 | [diff] [blame] | 1494 | /// GetVTablePtr - Return the Value of the vtable pointer member pointed |
| 1495 | /// to by This. |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 1496 | llvm::Value *GetVTablePtr(llvm::Value *This, llvm::Type *Ty); |
Anders Carlsson | d103f9f | 2010-03-28 19:40:00 +0000 | [diff] [blame] | 1497 | |
John McCall | 50da2ca | 2010-07-21 05:30:47 +0000 | [diff] [blame] | 1498 | /// EnterDtorCleanups - Enter the cleanups necessary to complete the |
| 1499 | /// given phase of destruction for a destructor. The end result |
| 1500 | /// should call destructors on members and base classes in reverse |
| 1501 | /// order of their construction. |
| 1502 | void EnterDtorCleanups(const CXXDestructorDecl *Dtor, CXXDtorType Type); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1503 | |
Chris Lattner | 7255a2d | 2010-06-22 00:03:40 +0000 | [diff] [blame] | 1504 | /// ShouldInstrumentFunction - Return true if the current function should be |
| 1505 | /// instrumented with __cyg_profile_func_* calls |
| 1506 | bool ShouldInstrumentFunction(); |
| 1507 | |
| 1508 | /// EmitFunctionInstrumentation - Emit LLVM code to call the specified |
| 1509 | /// instrumentation function with the current function and the call site, if |
| 1510 | /// function instrumentation is enabled. |
| 1511 | void EmitFunctionInstrumentation(const char *Fn); |
| 1512 | |
Roman Divacky | be4c870 | 2011-02-10 16:52:03 +0000 | [diff] [blame] | 1513 | /// EmitMCountInstrumentation - Emit call to .mcount. |
| 1514 | void EmitMCountInstrumentation(); |
| 1515 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1516 | /// EmitFunctionProlog - Emit the target specific LLVM code to load the |
| 1517 | /// arguments for the given function. This is also responsible for naming the |
| 1518 | /// LLVM function arguments. |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 1519 | void EmitFunctionProlog(const CGFunctionInfo &FI, |
| 1520 | llvm::Function *Fn, |
Daniel Dunbar | 17b708d | 2008-09-09 23:27:19 +0000 | [diff] [blame] | 1521 | const FunctionArgList &Args); |
| 1522 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1523 | /// EmitFunctionEpilog - Emit the target specific LLVM code to return the |
| 1524 | /// given temporary. |
Chris Lattner | 35b21b8 | 2010-06-27 01:06:27 +0000 | [diff] [blame] | 1525 | void EmitFunctionEpilog(const CGFunctionInfo &FI); |
Daniel Dunbar | 17b708d | 2008-09-09 23:27:19 +0000 | [diff] [blame] | 1526 | |
Mike Stump | cce3d4f | 2009-12-07 23:38:24 +0000 | [diff] [blame] | 1527 | /// EmitStartEHSpec - Emit the start of the exception spec. |
| 1528 | void EmitStartEHSpec(const Decl *D); |
| 1529 | |
| 1530 | /// EmitEndEHSpec - Emit the end of the exception spec. |
| 1531 | void EmitEndEHSpec(const Decl *D); |
| 1532 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1533 | /// getTerminateLandingPad - Return a landing pad that just calls terminate. |
| 1534 | llvm::BasicBlock *getTerminateLandingPad(); |
| 1535 | |
| 1536 | /// getTerminateHandler - Return a handler (not a landing pad, just |
| 1537 | /// a catch handler) that just calls terminate. This is used when |
| 1538 | /// a terminate scope encloses a try. |
Mike Stump | 9b39c51 | 2009-12-09 22:59:31 +0000 | [diff] [blame] | 1539 | llvm::BasicBlock *getTerminateHandler(); |
| 1540 | |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 1541 | llvm::Type *ConvertTypeForMem(QualType T); |
| 1542 | llvm::Type *ConvertType(QualType T); |
| 1543 | llvm::Type *ConvertType(const TypeDecl *T) { |
John McCall | bff225e | 2010-02-16 04:15:37 +0000 | [diff] [blame] | 1544 | return ConvertType(getContext().getTypeDeclType(T)); |
| 1545 | } |
Chris Lattner | c8aa5f1 | 2008-04-04 04:07:35 +0000 | [diff] [blame] | 1546 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1547 | /// LoadObjCSelf - Load the value of self. This function is only valid while |
| 1548 | /// generating code for an Objective-C method. |
Chris Lattner | c8aa5f1 | 2008-04-04 04:07:35 +0000 | [diff] [blame] | 1549 | llvm::Value *LoadObjCSelf(); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1550 | |
| 1551 | /// TypeOfSelfObject - Return type of object that this self represents. |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 1552 | QualType TypeOfSelfObject(); |
Chris Lattner | 4111024 | 2008-06-17 18:05:57 +0000 | [diff] [blame] | 1553 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1554 | /// hasAggregateLLVMType - Return true if the specified AST type will map into |
| 1555 | /// an aggregate LLVM type or is void. |
John McCall | 9d232c8 | 2013-03-07 21:37:08 +0000 | [diff] [blame] | 1556 | static TypeEvaluationKind getEvaluationKind(QualType T); |
| 1557 | |
| 1558 | static bool hasScalarEvaluationKind(QualType T) { |
| 1559 | return getEvaluationKind(T) == TEK_Scalar; |
| 1560 | } |
| 1561 | |
| 1562 | static bool hasAggregateEvaluationKind(QualType T) { |
| 1563 | return getEvaluationKind(T) == TEK_Aggregate; |
| 1564 | } |
Daniel Dunbar | 55e8742 | 2008-11-11 02:29:29 +0000 | [diff] [blame] | 1565 | |
| 1566 | /// createBasicBlock - Create an LLVM basic block. |
Richard Smith | 4def70d | 2012-10-09 19:52:38 +0000 | [diff] [blame] | 1567 | llvm::BasicBlock *createBasicBlock(const Twine &name = "", |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1568 | llvm::Function *parent = 0, |
| 1569 | llvm::BasicBlock *before = 0) { |
Daniel Dunbar | 29ea672 | 2008-11-12 00:01:12 +0000 | [diff] [blame] | 1570 | #ifdef NDEBUG |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1571 | return llvm::BasicBlock::Create(getLLVMContext(), "", parent, before); |
Daniel Dunbar | 29ea672 | 2008-11-12 00:01:12 +0000 | [diff] [blame] | 1572 | #else |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1573 | return llvm::BasicBlock::Create(getLLVMContext(), name, parent, before); |
Daniel Dunbar | 29ea672 | 2008-11-12 00:01:12 +0000 | [diff] [blame] | 1574 | #endif |
Daniel Dunbar | 55e8742 | 2008-11-11 02:29:29 +0000 | [diff] [blame] | 1575 | } |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1576 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1577 | /// getBasicBlockForLabel - Return the LLVM basicblock that the specified |
| 1578 | /// label maps to. |
Chris Lattner | ad8dcf4 | 2011-02-17 07:39:24 +0000 | [diff] [blame] | 1579 | JumpDest getJumpDestForLabel(const LabelDecl *S); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1580 | |
Mike Stump | f71d232 | 2009-11-30 20:08:49 +0000 | [diff] [blame] | 1581 | /// SimplifyForwardingBlocks - If the given basic block is only a branch to |
| 1582 | /// another basic block, simplify it. This assumes that no other code could |
| 1583 | /// potentially reference the basic block. |
Daniel Dunbar | aa5bd87 | 2009-04-01 04:37:47 +0000 | [diff] [blame] | 1584 | void SimplifyForwardingBlocks(llvm::BasicBlock *BB); |
| 1585 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1586 | /// EmitBlock - Emit the given block \arg BB and set it as the insert point, |
| 1587 | /// adding a fall-through branch from the current insert block if |
| 1588 | /// necessary. It is legal to call this function even if there is no current |
| 1589 | /// insertion point. |
Daniel Dunbar | a0c21a8 | 2008-11-13 01:24:05 +0000 | [diff] [blame] | 1590 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1591 | /// IsFinished - If true, indicates that the caller has finished emitting |
| 1592 | /// branches to the given block and does not expect to emit code into it. This |
| 1593 | /// means the block can be ignored if it is unreachable. |
Daniel Dunbar | a0c21a8 | 2008-11-13 01:24:05 +0000 | [diff] [blame] | 1594 | void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false); |
Daniel Dunbar | 824e3bd | 2008-11-11 04:34:23 +0000 | [diff] [blame] | 1595 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 1596 | /// EmitBlockAfterUses - Emit the given block somewhere hopefully |
| 1597 | /// near its uses, and leave the insertion point in it. |
| 1598 | void EmitBlockAfterUses(llvm::BasicBlock *BB); |
| 1599 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1600 | /// EmitBranch - Emit a branch to the specified basic block from the current |
| 1601 | /// insert block, taking care to avoid creation of branches from dummy |
| 1602 | /// blocks. It is legal to call this function even if there is no current |
| 1603 | /// insertion point. |
Daniel Dunbar | 5e08ad3 | 2008-11-11 22:06:59 +0000 | [diff] [blame] | 1604 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1605 | /// This function clears the current insertion point. The caller should follow |
| 1606 | /// calls to this function with calls to Emit*Block prior to generation new |
| 1607 | /// code. |
Daniel Dunbar | d57a871 | 2008-11-11 09:41:28 +0000 | [diff] [blame] | 1608 | void EmitBranch(llvm::BasicBlock *Block); |
| 1609 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1610 | /// HaveInsertPoint - True if an insertion point is defined. If not, this |
| 1611 | /// indicates that the current code being emitted is unreachable. |
| 1612 | bool HaveInsertPoint() const { |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 1613 | return Builder.GetInsertBlock() != 0; |
| 1614 | } |
| 1615 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1616 | /// EnsureInsertPoint - Ensure that an insertion point is defined so that |
| 1617 | /// emitted IR has a place to go. Note that by definition, if this function |
| 1618 | /// creates a block then that block is unreachable; callers may do better to |
| 1619 | /// detect when no insertion point is defined and simply skip IR generation. |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 1620 | void EnsureInsertPoint() { |
| 1621 | if (!HaveInsertPoint()) |
| 1622 | EmitBlock(createBasicBlock()); |
| 1623 | } |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1624 | |
Daniel Dunbar | 488e993 | 2008-08-16 00:56:44 +0000 | [diff] [blame] | 1625 | /// ErrorUnsupported - Print out an error that codegen doesn't support the |
Chris Lattner | dc5e826 | 2007-12-02 01:43:38 +0000 | [diff] [blame] | 1626 | /// specified stmt yet. |
Daniel Dunbar | 90df4b6 | 2008-09-04 03:43:08 +0000 | [diff] [blame] | 1627 | void ErrorUnsupported(const Stmt *S, const char *Type, |
| 1628 | bool OmitOnError=false); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1629 | |
| 1630 | //===--------------------------------------------------------------------===// |
| 1631 | // Helpers |
| 1632 | //===--------------------------------------------------------------------===// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1633 | |
Eli Friedman | 6da2c71 | 2011-12-03 04:14:32 +0000 | [diff] [blame] | 1634 | LValue MakeAddrLValue(llvm::Value *V, QualType T, |
| 1635 | CharUnits Alignment = CharUnits()) { |
Dan Gohman | 3d5aff5 | 2010-10-14 23:06:10 +0000 | [diff] [blame] | 1636 | return LValue::MakeAddr(V, T, Alignment, getContext(), |
| 1637 | CGM.getTBAAInfo(T)); |
Daniel Dunbar | 5cf8bfe | 2010-08-21 02:53:44 +0000 | [diff] [blame] | 1638 | } |
John McCall | e0c1168 | 2012-07-02 23:58:38 +0000 | [diff] [blame] | 1639 | |
Eli Friedman | 2f77b3d | 2011-11-16 00:42:57 +0000 | [diff] [blame] | 1640 | LValue MakeNaturalAlignAddrLValue(llvm::Value *V, QualType T) { |
Eli Friedman | 6da2c71 | 2011-12-03 04:14:32 +0000 | [diff] [blame] | 1641 | CharUnits Alignment; |
| 1642 | if (!T->isIncompleteType()) |
| 1643 | Alignment = getContext().getTypeAlignInChars(T); |
Eli Friedman | 2f77b3d | 2011-11-16 00:42:57 +0000 | [diff] [blame] | 1644 | return LValue::MakeAddr(V, T, Alignment, getContext(), |
| 1645 | CGM.getTBAAInfo(T)); |
| 1646 | } |
Daniel Dunbar | 5cf8bfe | 2010-08-21 02:53:44 +0000 | [diff] [blame] | 1647 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1648 | /// CreateTempAlloca - This creates a alloca and inserts it into the entry |
Daniel Dunbar | 195337d | 2010-02-09 02:48:28 +0000 | [diff] [blame] | 1649 | /// block. The caller is responsible for setting an appropriate alignment on |
| 1650 | /// the alloca. |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 1651 | llvm::AllocaInst *CreateTempAlloca(llvm::Type *Ty, |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 1652 | const Twine &Name = "tmp"); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1653 | |
John McCall | ac41816 | 2010-04-22 01:10:34 +0000 | [diff] [blame] | 1654 | /// InitTempAlloca - Provide an initial value for the given alloca. |
| 1655 | void InitTempAlloca(llvm::AllocaInst *Alloca, llvm::Value *Value); |
| 1656 | |
Daniel Dunbar | 9bd4da2 | 2010-02-16 19:44:13 +0000 | [diff] [blame] | 1657 | /// CreateIRTemp - Create a temporary IR object of the given type, with |
| 1658 | /// appropriate alignment. This routine should only be used when an temporary |
| 1659 | /// value needs to be stored into an alloca (for example, to avoid explicit |
| 1660 | /// PHI construction), but the type is the IR type, not the type appropriate |
| 1661 | /// for storing in memory. |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 1662 | llvm::AllocaInst *CreateIRTemp(QualType T, const Twine &Name = "tmp"); |
Daniel Dunbar | 9bd4da2 | 2010-02-16 19:44:13 +0000 | [diff] [blame] | 1663 | |
Daniel Dunbar | 195337d | 2010-02-09 02:48:28 +0000 | [diff] [blame] | 1664 | /// CreateMemTemp - Create a temporary memory object of the given type, with |
| 1665 | /// appropriate alignment. |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 1666 | llvm::AllocaInst *CreateMemTemp(QualType T, const Twine &Name = "tmp"); |
Daniel Dunbar | 195337d | 2010-02-09 02:48:28 +0000 | [diff] [blame] | 1667 | |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 1668 | /// CreateAggTemp - Create a temporary memory object for the given |
| 1669 | /// aggregate type. |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 1670 | AggValueSlot CreateAggTemp(QualType T, const Twine &Name = "tmp") { |
Eli Friedman | d7722d9 | 2011-12-03 02:13:40 +0000 | [diff] [blame] | 1671 | CharUnits Alignment = getContext().getTypeAlignInChars(T); |
Eli Friedman | f394078 | 2011-12-03 00:54:26 +0000 | [diff] [blame] | 1672 | return AggValueSlot::forAddr(CreateMemTemp(T, Name), Alignment, |
| 1673 | T.getQualifiers(), |
John McCall | 7c2349b | 2011-08-25 20:40:09 +0000 | [diff] [blame] | 1674 | AggValueSlot::IsNotDestructed, |
John McCall | 410ffb2 | 2011-08-25 23:04:34 +0000 | [diff] [blame] | 1675 | AggValueSlot::DoesNotNeedGCBarriers, |
Chad Rosier | 649b4a1 | 2012-03-29 17:37:10 +0000 | [diff] [blame] | 1676 | AggValueSlot::IsNotAliased); |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 1677 | } |
| 1678 | |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1679 | /// Emit a cast to void* in the appropriate address space. |
| 1680 | llvm::Value *EmitCastToVoidPtr(llvm::Value *value); |
| 1681 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1682 | /// EvaluateExprAsBool - Perform the usual unary conversions on the specified |
| 1683 | /// expression and compare the result against zero, returning an Int1Ty value. |
| 1684 | llvm::Value *EvaluateExprAsBool(const Expr *E); |
| 1685 | |
John McCall | 2a41637 | 2010-12-05 02:00:02 +0000 | [diff] [blame] | 1686 | /// EmitIgnoredExpr - Emit an expression in a context which ignores the result. |
| 1687 | void EmitIgnoredExpr(const Expr *E); |
| 1688 | |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 1689 | /// EmitAnyExpr - Emit code to compute the specified expression which can have |
| 1690 | /// any type. The result is returned as an RValue struct. If this is an |
| 1691 | /// aggregate expression, the aggloc/agglocvolatile arguments indicate where |
| 1692 | /// the result should be returned. |
Mike Stump | 49d1cd5 | 2009-05-26 22:03:21 +0000 | [diff] [blame] | 1693 | /// |
Dmitri Gribenko | 70517ca | 2012-08-23 17:58:28 +0000 | [diff] [blame] | 1694 | /// \param ignoreResult True if the resulting value isn't used. |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 1695 | RValue EmitAnyExpr(const Expr *E, |
John McCall | e0c1168 | 2012-07-02 23:58:38 +0000 | [diff] [blame] | 1696 | AggValueSlot aggSlot = AggValueSlot::ignored(), |
| 1697 | bool ignoreResult = false); |
Devang Patel | d9363c3 | 2007-09-28 21:49:18 +0000 | [diff] [blame] | 1698 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1699 | // EmitVAListRef - Emit a "reference" to a va_list; this is either the address |
| 1700 | // 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] | 1701 | llvm::Value *EmitVAListRef(const Expr *E); |
| 1702 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1703 | /// EmitAnyExprToTemp - Similary to EmitAnyExpr(), however, the result will |
| 1704 | /// always be accessible even if no aggregate location is provided. |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 1705 | RValue EmitAnyExprToTemp(const Expr *E); |
Daniel Dunbar | 46f45b9 | 2008-09-09 01:06:48 +0000 | [diff] [blame] | 1706 | |
John McCall | 60d3365 | 2011-03-08 09:11:50 +0000 | [diff] [blame] | 1707 | /// EmitAnyExprToMem - Emits the code necessary to evaluate an |
Chad Rosier | 649b4a1 | 2012-03-29 17:37:10 +0000 | [diff] [blame] | 1708 | /// arbitrary expression into the given memory location. |
John McCall | 3d3ec1c | 2010-04-21 10:05:39 +0000 | [diff] [blame] | 1709 | void EmitAnyExprToMem(const Expr *E, llvm::Value *Location, |
Chad Rosier | 649b4a1 | 2012-03-29 17:37:10 +0000 | [diff] [blame] | 1710 | Qualifiers Quals, bool IsInitializer); |
John McCall | 3d3ec1c | 2010-04-21 10:05:39 +0000 | [diff] [blame] | 1711 | |
John McCall | 60d3365 | 2011-03-08 09:11:50 +0000 | [diff] [blame] | 1712 | /// EmitExprAsInit - Emits the code necessary to initialize a |
| 1713 | /// location in memory with the given initializer. |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 1714 | void EmitExprAsInit(const Expr *init, const ValueDecl *D, |
John McCall | a07398e | 2011-06-16 04:16:24 +0000 | [diff] [blame] | 1715 | LValue lvalue, bool capturedByInit); |
John McCall | 60d3365 | 2011-03-08 09:11:50 +0000 | [diff] [blame] | 1716 | |
Fariborz Jahanian | 3ac83d6 | 2013-01-25 23:57:05 +0000 | [diff] [blame] | 1717 | /// hasVolatileMember - returns true if aggregate type has a volatile |
| 1718 | /// member. |
| 1719 | bool hasVolatileMember(QualType T) { |
| 1720 | if (const RecordType *RT = T->getAs<RecordType>()) { |
| 1721 | const RecordDecl *RD = cast<RecordDecl>(RT->getDecl()); |
| 1722 | return RD->hasVolatileMember(); |
| 1723 | } |
| 1724 | return false; |
| 1725 | } |
Arnaud A. de Grandmaison | 8fcbb8d | 2013-02-05 09:06:17 +0000 | [diff] [blame] | 1726 | /// EmitAggregateCopy - Emit an aggregate assignment. |
Benjamin Kramer | 6cacae8 | 2012-09-30 12:43:37 +0000 | [diff] [blame] | 1727 | /// |
| 1728 | /// The difference to EmitAggregateCopy is that tail padding is not copied. |
| 1729 | /// This is required for correctness when assigning non-POD structures in C++. |
| 1730 | void EmitAggregateAssign(llvm::Value *DestPtr, llvm::Value *SrcPtr, |
Fariborz Jahanian | 3ac83d6 | 2013-01-25 23:57:05 +0000 | [diff] [blame] | 1731 | QualType EltTy) { |
| 1732 | bool IsVolatile = hasVolatileMember(EltTy); |
| 1733 | EmitAggregateCopy(DestPtr, SrcPtr, EltTy, IsVolatile, CharUnits::Zero(), |
| 1734 | true); |
Benjamin Kramer | 6cacae8 | 2012-09-30 12:43:37 +0000 | [diff] [blame] | 1735 | } |
| 1736 | |
Arnaud A. de Grandmaison | 8fcbb8d | 2013-02-05 09:06:17 +0000 | [diff] [blame] | 1737 | /// EmitAggregateCopy - Emit an aggregate copy. |
Mike Stump | 27fe2e6 | 2009-05-23 22:29:41 +0000 | [diff] [blame] | 1738 | /// |
Sylvestre Ledru | f3477c1 | 2012-09-27 10:16:10 +0000 | [diff] [blame] | 1739 | /// \param isVolatile - True iff either the source or the destination is |
Mike Stump | 27fe2e6 | 2009-05-23 22:29:41 +0000 | [diff] [blame] | 1740 | /// volatile. |
Benjamin Kramer | 6cacae8 | 2012-09-30 12:43:37 +0000 | [diff] [blame] | 1741 | /// \param isAssignment - If false, allow padding to be copied. This often |
| 1742 | /// yields more efficient. |
Daniel Dunbar | 7482d12 | 2008-09-09 20:49:46 +0000 | [diff] [blame] | 1743 | void EmitAggregateCopy(llvm::Value *DestPtr, llvm::Value *SrcPtr, |
Eli Friedman | bd7d828 | 2011-12-05 22:23:28 +0000 | [diff] [blame] | 1744 | QualType EltTy, bool isVolatile=false, |
Benjamin Kramer | 6cacae8 | 2012-09-30 12:43:37 +0000 | [diff] [blame] | 1745 | CharUnits Alignment = CharUnits::Zero(), |
| 1746 | bool isAssignment = false); |
Daniel Dunbar | 7482d12 | 2008-09-09 20:49:46 +0000 | [diff] [blame] | 1747 | |
Devang Patel | 51b09f2 | 2007-10-04 23:45:31 +0000 | [diff] [blame] | 1748 | /// StartBlock - Start new block named N. If insert block is a dummy block |
| 1749 | /// then reuse it. |
| 1750 | void StartBlock(const char *N); |
| 1751 | |
Anders Carlsson | dde0a94 | 2008-09-11 09:15:33 +0000 | [diff] [blame] | 1752 | /// GetAddrOfLocalVar - Return the address of a local variable. |
John McCall | 4c40d98 | 2010-08-31 07:33:07 +0000 | [diff] [blame] | 1753 | llvm::Value *GetAddrOfLocalVar(const VarDecl *VD) { |
| 1754 | llvm::Value *Res = LocalDeclMap[VD]; |
| 1755 | assert(Res && "Invalid argument to GetAddrOfLocalVar(), no decl!"); |
| 1756 | return Res; |
| 1757 | } |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1758 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1759 | /// getOpaqueLValueMapping - Given an opaque value expression (which |
| 1760 | /// must be mapped to an l-value), return its mapping. |
| 1761 | const LValue &getOpaqueLValueMapping(const OpaqueValueExpr *e) { |
| 1762 | assert(OpaqueValueMapping::shouldBindAsLValue(e)); |
| 1763 | |
| 1764 | llvm::DenseMap<const OpaqueValueExpr*,LValue>::iterator |
| 1765 | it = OpaqueLValues.find(e); |
| 1766 | assert(it != OpaqueLValues.end() && "no mapping for opaque value!"); |
| 1767 | return it->second; |
| 1768 | } |
| 1769 | |
| 1770 | /// getOpaqueRValueMapping - Given an opaque value expression (which |
| 1771 | /// must be mapped to an r-value), return its mapping. |
| 1772 | const RValue &getOpaqueRValueMapping(const OpaqueValueExpr *e) { |
| 1773 | assert(!OpaqueValueMapping::shouldBindAsLValue(e)); |
| 1774 | |
| 1775 | llvm::DenseMap<const OpaqueValueExpr*,RValue>::iterator |
| 1776 | it = OpaqueRValues.find(e); |
| 1777 | assert(it != OpaqueRValues.end() && "no mapping for opaque value!"); |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1778 | return it->second; |
| 1779 | } |
| 1780 | |
Dan Gohman | 4f8d123 | 2008-05-22 00:50:06 +0000 | [diff] [blame] | 1781 | /// getAccessedFieldNo - Given an encoded value and a result number, return |
| 1782 | /// the input field number being accessed. |
| 1783 | static unsigned getAccessedFieldNo(unsigned Idx, const llvm::Constant *Elts); |
| 1784 | |
Chris Lattner | ad8dcf4 | 2011-02-17 07:39:24 +0000 | [diff] [blame] | 1785 | llvm::BlockAddress *GetAddrOfLabel(const LabelDecl *L); |
Chris Lattner | 3d00fdc | 2009-10-13 06:55:33 +0000 | [diff] [blame] | 1786 | llvm::BasicBlock *GetIndirectGotoBlock(); |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 1787 | |
Anders Carlsson | 1884eb0 | 2010-05-22 17:35:42 +0000 | [diff] [blame] | 1788 | /// EmitNullInitialization - Generate code to set a value of the given type to |
| 1789 | /// null, If the type contains data member pointers, they will be initialized |
| 1790 | /// to -1 in accordance with the Itanium C++ ABI. |
| 1791 | void EmitNullInitialization(llvm::Value *DestPtr, QualType Ty); |
Anders Carlsson | ddf7cac | 2008-11-04 05:30:00 +0000 | [diff] [blame] | 1792 | |
| 1793 | // EmitVAArg - Generate code to get an argument from the passed in pointer |
| 1794 | // and update it accordingly. The return value is a pointer to the argument. |
| 1795 | // 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] | 1796 | // instruction in LLVM instead once it works well enough. |
Anders Carlsson | ddf7cac | 2008-11-04 05:30:00 +0000 | [diff] [blame] | 1797 | llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty); |
Anders Carlsson | f666b77 | 2008-12-20 20:27:15 +0000 | [diff] [blame] | 1798 | |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1799 | /// emitArrayLength - Compute the length of an array, even if it's a |
| 1800 | /// VLA, and drill down to the base element type. |
| 1801 | llvm::Value *emitArrayLength(const ArrayType *arrayType, |
| 1802 | QualType &baseType, |
| 1803 | llvm::Value *&addr); |
| 1804 | |
John McCall | bc8d40d | 2011-06-24 21:55:10 +0000 | [diff] [blame] | 1805 | /// EmitVLASize - Capture all the sizes for the VLA expressions in |
| 1806 | /// the given variably-modified type and store them in the VLASizeMap. |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 1807 | /// |
| 1808 | /// This function can be called with a null (unreachable) insert point. |
John McCall | bc8d40d | 2011-06-24 21:55:10 +0000 | [diff] [blame] | 1809 | void EmitVariablyModifiedType(QualType Ty); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1810 | |
John McCall | bc8d40d | 2011-06-24 21:55:10 +0000 | [diff] [blame] | 1811 | /// getVLASize - Returns an LLVM value that corresponds to the size, |
| 1812 | /// in non-variably-sized elements, of a variable length array type, |
| 1813 | /// plus that largest non-variably-sized element type. Assumes that |
| 1814 | /// the type has already been emitted with EmitVariablyModifiedType. |
| 1815 | std::pair<llvm::Value*,QualType> getVLASize(const VariableArrayType *vla); |
| 1816 | std::pair<llvm::Value*,QualType> getVLASize(QualType vla); |
Anders Carlsson | dcc90d8 | 2008-12-12 07:19:02 +0000 | [diff] [blame] | 1817 | |
Anders Carlsson | 5f4307b | 2009-04-14 16:58:56 +0000 | [diff] [blame] | 1818 | /// LoadCXXThis - Load the value of 'this'. This function is only valid while |
| 1819 | /// generating code for an C++ member function. |
John McCall | 2504941 | 2010-02-16 22:04:33 +0000 | [diff] [blame] | 1820 | llvm::Value *LoadCXXThis() { |
| 1821 | assert(CXXThisValue && "no 'this' value for this function"); |
| 1822 | return CXXThisValue; |
| 1823 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1824 | |
Anders Carlsson | c997d42 | 2010-01-02 01:01:18 +0000 | [diff] [blame] | 1825 | /// LoadCXXVTT - Load the VTT parameter to base constructors/destructors have |
| 1826 | /// virtual bases. |
Timur Iskhodzhanov | 59660c2 | 2013-02-13 08:37:51 +0000 | [diff] [blame] | 1827 | // FIXME: Every place that calls LoadCXXVTT is something |
| 1828 | // that needs to be abstracted properly. |
John McCall | 2504941 | 2010-02-16 22:04:33 +0000 | [diff] [blame] | 1829 | llvm::Value *LoadCXXVTT() { |
Timur Iskhodzhanov | 59660c2 | 2013-02-13 08:37:51 +0000 | [diff] [blame] | 1830 | assert(CXXStructorImplicitParamValue && "no VTT value for this function"); |
| 1831 | return CXXStructorImplicitParamValue; |
| 1832 | } |
| 1833 | |
| 1834 | /// LoadCXXStructorImplicitParam - Load the implicit parameter |
| 1835 | /// for a constructor/destructor. |
| 1836 | llvm::Value *LoadCXXStructorImplicitParam() { |
| 1837 | assert(CXXStructorImplicitParamValue && |
| 1838 | "no implicit argument value for this function"); |
| 1839 | return CXXStructorImplicitParamValue; |
John McCall | 2504941 | 2010-02-16 22:04:33 +0000 | [diff] [blame] | 1840 | } |
John McCall | bff225e | 2010-02-16 04:15:37 +0000 | [diff] [blame] | 1841 | |
| 1842 | /// GetAddressOfBaseOfCompleteClass - Convert the given pointer to a |
Anders Carlsson | 8561a86 | 2010-04-24 23:01:49 +0000 | [diff] [blame] | 1843 | /// complete class to the given direct base. |
| 1844 | llvm::Value * |
| 1845 | GetAddressOfDirectBaseInCompleteClass(llvm::Value *Value, |
| 1846 | const CXXRecordDecl *Derived, |
| 1847 | const CXXRecordDecl *Base, |
| 1848 | bool BaseIsVirtual); |
Anders Carlsson | a88ad56 | 2010-04-24 21:51:08 +0000 | [diff] [blame] | 1849 | |
Mike Stump | f71d232 | 2009-11-30 20:08:49 +0000 | [diff] [blame] | 1850 | /// GetAddressOfBaseClass - This function will add the necessary delta to the |
| 1851 | /// load of 'this' and returns address of the base class. |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1852 | llvm::Value *GetAddressOfBaseClass(llvm::Value *Value, |
Anders Carlsson | 8561a86 | 2010-04-24 23:01:49 +0000 | [diff] [blame] | 1853 | const CXXRecordDecl *Derived, |
John McCall | f871d0c | 2010-08-07 06:22:56 +0000 | [diff] [blame] | 1854 | CastExpr::path_const_iterator PathBegin, |
| 1855 | CastExpr::path_const_iterator PathEnd, |
Anders Carlsson | 34a2d38 | 2010-04-24 21:06:20 +0000 | [diff] [blame] | 1856 | bool NullCheckValue); |
| 1857 | |
Anders Carlsson | a3697c9 | 2009-11-23 17:57:54 +0000 | [diff] [blame] | 1858 | llvm::Value *GetAddressOfDerivedClass(llvm::Value *Value, |
Anders Carlsson | 8561a86 | 2010-04-24 23:01:49 +0000 | [diff] [blame] | 1859 | const CXXRecordDecl *Derived, |
John McCall | f871d0c | 2010-08-07 06:22:56 +0000 | [diff] [blame] | 1860 | CastExpr::path_const_iterator PathBegin, |
| 1861 | CastExpr::path_const_iterator PathEnd, |
Anders Carlsson | a3697c9 | 2009-11-23 17:57:54 +0000 | [diff] [blame] | 1862 | bool NullCheckValue); |
| 1863 | |
Anders Carlsson | bb7e17b | 2010-01-31 01:36:53 +0000 | [diff] [blame] | 1864 | llvm::Value *GetVirtualBaseClassOffset(llvm::Value *This, |
| 1865 | const CXXRecordDecl *ClassDecl, |
| 1866 | const CXXRecordDecl *BaseClassDecl); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1867 | |
Timur Iskhodzhanov | 1d4fff5 | 2013-02-27 13:46:31 +0000 | [diff] [blame] | 1868 | /// GetVTTParameter - Return the VTT parameter that should be passed to a |
| 1869 | /// base constructor/destructor with virtual bases. |
| 1870 | /// FIXME: VTTs are Itanium ABI-specific, so the definition should move |
| 1871 | /// to ItaniumCXXABI.cpp together with all the references to VTT. |
| 1872 | llvm::Value *GetVTTParameter(GlobalDecl GD, bool ForVirtualBase, |
| 1873 | bool Delegating); |
| 1874 | |
John McCall | c0bf462 | 2010-02-23 00:48:20 +0000 | [diff] [blame] | 1875 | void EmitDelegateCXXConstructorCall(const CXXConstructorDecl *Ctor, |
| 1876 | CXXCtorType CtorType, |
| 1877 | const FunctionArgList &Args); |
Sean Hunt | 059ce0d | 2011-05-01 07:04:31 +0000 | [diff] [blame] | 1878 | // It's important not to confuse this and the previous function. Delegating |
| 1879 | // constructors are the C++0x feature. The constructor delegate optimization |
| 1880 | // is used to reduce duplication in the base and complete consturctors where |
| 1881 | // they are substantially the same. |
| 1882 | void EmitDelegatingCXXConstructorCall(const CXXConstructorDecl *Ctor, |
| 1883 | const FunctionArgList &Args); |
Anders Carlsson | 155ed4a | 2010-05-02 23:20:53 +0000 | [diff] [blame] | 1884 | void EmitCXXConstructorCall(const CXXConstructorDecl *D, CXXCtorType Type, |
Douglas Gregor | 378e1e7 | 2013-01-31 05:50:40 +0000 | [diff] [blame] | 1885 | bool ForVirtualBase, bool Delegating, |
| 1886 | llvm::Value *This, |
Anders Carlsson | b14095a | 2009-04-17 00:06:03 +0000 | [diff] [blame] | 1887 | CallExpr::const_arg_iterator ArgBeg, |
| 1888 | CallExpr::const_arg_iterator ArgEnd); |
Fariborz Jahanian | 3499987 | 2010-11-13 21:53:34 +0000 | [diff] [blame] | 1889 | |
| 1890 | void EmitSynthesizedCXXCopyCtorCall(const CXXConstructorDecl *D, |
| 1891 | llvm::Value *This, llvm::Value *Src, |
| 1892 | CallExpr::const_arg_iterator ArgBeg, |
| 1893 | CallExpr::const_arg_iterator ArgEnd); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1894 | |
Fariborz Jahanian | 288dcaf | 2009-08-19 20:55:16 +0000 | [diff] [blame] | 1895 | void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, |
Anders Carlsson | 569c1f4 | 2009-09-23 02:45:36 +0000 | [diff] [blame] | 1896 | const ConstantArrayType *ArrayTy, |
Anders Carlsson | 5d4d946 | 2009-11-24 18:43:52 +0000 | [diff] [blame] | 1897 | llvm::Value *ArrayPtr, |
| 1898 | CallExpr::const_arg_iterator ArgBeg, |
Douglas Gregor | 59174c0 | 2010-07-21 01:10:17 +0000 | [diff] [blame] | 1899 | CallExpr::const_arg_iterator ArgEnd, |
| 1900 | bool ZeroInitialization = false); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1901 | |
Anders Carlsson | 569c1f4 | 2009-09-23 02:45:36 +0000 | [diff] [blame] | 1902 | void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, |
| 1903 | llvm::Value *NumElements, |
Anders Carlsson | 5d4d946 | 2009-11-24 18:43:52 +0000 | [diff] [blame] | 1904 | llvm::Value *ArrayPtr, |
| 1905 | CallExpr::const_arg_iterator ArgBeg, |
Douglas Gregor | 59174c0 | 2010-07-21 01:10:17 +0000 | [diff] [blame] | 1906 | CallExpr::const_arg_iterator ArgEnd, |
| 1907 | bool ZeroInitialization = false); |
Anders Carlsson | b14095a | 2009-04-17 00:06:03 +0000 | [diff] [blame] | 1908 | |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1909 | static Destroyer destroyCXXObject; |
| 1910 | |
Anders Carlsson | 7267c16 | 2009-05-29 21:03:38 +0000 | [diff] [blame] | 1911 | void EmitCXXDestructorCall(const CXXDestructorDecl *D, CXXDtorType Type, |
Douglas Gregor | 378e1e7 | 2013-01-31 05:50:40 +0000 | [diff] [blame] | 1912 | bool ForVirtualBase, bool Delegating, |
| 1913 | llvm::Value *This); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1914 | |
John McCall | 1970567 | 2011-09-15 06:49:18 +0000 | [diff] [blame] | 1915 | void EmitNewArrayInitializer(const CXXNewExpr *E, QualType elementType, |
| 1916 | llvm::Value *NewPtr, llvm::Value *NumElements); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1917 | |
Peter Collingbourne | 8681160 | 2011-11-27 22:09:22 +0000 | [diff] [blame] | 1918 | void EmitCXXTemporary(const CXXTemporary *Temporary, QualType TempType, |
| 1919 | llvm::Value *Ptr); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1920 | |
Anders Carlsson | a00703d | 2009-05-31 01:40:14 +0000 | [diff] [blame] | 1921 | llvm::Value *EmitCXXNewExpr(const CXXNewExpr *E); |
Anders Carlsson | 60e282c | 2009-08-16 21:13:42 +0000 | [diff] [blame] | 1922 | void EmitCXXDeleteExpr(const CXXDeleteExpr *E); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1923 | |
Eli Friedman | 4bf8152 | 2009-11-18 00:57:03 +0000 | [diff] [blame] | 1924 | void EmitDeleteCall(const FunctionDecl *DeleteFD, llvm::Value *Ptr, |
| 1925 | QualType DeleteTy); |
| 1926 | |
Mike Stump | c2e84ae | 2009-11-15 08:09:41 +0000 | [diff] [blame] | 1927 | llvm::Value* EmitCXXTypeidExpr(const CXXTypeidExpr *E); |
Mike Stump | c849c05 | 2009-11-16 06:50:58 +0000 | [diff] [blame] | 1928 | llvm::Value *EmitDynamicCast(llvm::Value *V, const CXXDynamicCastExpr *DCE); |
Nico Weber | c5f8046 | 2012-10-11 10:13:44 +0000 | [diff] [blame] | 1929 | llvm::Value* EmitCXXUuidofExpr(const CXXUuidofExpr *E); |
Mike Stump | c2e84ae | 2009-11-15 08:09:41 +0000 | [diff] [blame] | 1930 | |
Sebastian Redl | 972edf0 | 2012-02-19 16:03:09 +0000 | [diff] [blame] | 1931 | void MaybeEmitStdInitializerListCleanup(llvm::Value *loc, const Expr *init); |
Sebastian Redl | af130fd | 2012-02-19 12:28:02 +0000 | [diff] [blame] | 1932 | void EmitStdInitializerListCleanup(llvm::Value *loc, |
| 1933 | const InitListExpr *init); |
Sebastian Redl | 32cf1f2 | 2012-02-17 08:42:25 +0000 | [diff] [blame] | 1934 | |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 1935 | /// \brief Situations in which we might emit a check for the suitability of a |
| 1936 | /// pointer or glvalue. |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 1937 | enum TypeCheckKind { |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 1938 | /// Checking the operand of a load. Must be suitably sized and aligned. |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 1939 | TCK_Load, |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 1940 | /// Checking the destination of a store. Must be suitably sized and aligned. |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 1941 | TCK_Store, |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 1942 | /// Checking the bound value in a reference binding. Must be suitably sized |
| 1943 | /// and aligned, but is not required to refer to an object (until the |
| 1944 | /// reference is used), per core issue 453. |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 1945 | TCK_ReferenceBinding, |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 1946 | /// Checking the object expression in a non-static data member access. Must |
| 1947 | /// be an object within its lifetime. |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 1948 | TCK_MemberAccess, |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 1949 | /// Checking the 'this' pointer for a call to a non-static member function. |
| 1950 | /// Must be an object within its lifetime. |
Richard Smith | 8e1cee6 | 2012-10-25 02:14:12 +0000 | [diff] [blame] | 1951 | TCK_MemberCall, |
| 1952 | /// Checking the 'this' pointer for a constructor call. |
Richard Smith | c764830 | 2013-02-13 21:18:23 +0000 | [diff] [blame] | 1953 | TCK_ConstructorCall, |
| 1954 | /// Checking the operand of a static_cast to a derived pointer type. Must be |
| 1955 | /// null or an object within its lifetime. |
| 1956 | TCK_DowncastPointer, |
| 1957 | /// Checking the operand of a static_cast to a derived reference type. Must |
| 1958 | /// be an object within its lifetime. |
| 1959 | TCK_DowncastReference |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 1960 | }; |
| 1961 | |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 1962 | /// \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] | 1963 | /// appropriate size and alignment for an object of type \p Type. |
Richard Smith | 4def70d | 2012-10-09 19:52:38 +0000 | [diff] [blame] | 1964 | void EmitTypeCheck(TypeCheckKind TCK, SourceLocation Loc, llvm::Value *V, |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 1965 | QualType Type, CharUnits Alignment = CharUnits::Zero()); |
Mike Stump | b14e62d | 2009-12-16 02:57:00 +0000 | [diff] [blame] | 1966 | |
Richard Smith | a0a628f | 2013-02-23 02:53:19 +0000 | [diff] [blame] | 1967 | /// \brief Emit a check that \p Base points into an array object, which |
| 1968 | /// we can access at index \p Index. \p Accessed should be \c false if we |
| 1969 | /// this expression is used as an lvalue, for instance in "&Arr[Idx]". |
| 1970 | void EmitBoundsCheck(const Expr *E, const Expr *Base, llvm::Value *Index, |
| 1971 | QualType IndexType, bool Accessed); |
| 1972 | |
Chris Lattner | dd36d32 | 2010-01-09 21:40:03 +0000 | [diff] [blame] | 1973 | llvm::Value *EmitScalarPrePostIncDec(const UnaryOperator *E, LValue LV, |
| 1974 | bool isInc, bool isPre); |
| 1975 | ComplexPairTy EmitComplexPrePostIncDec(const UnaryOperator *E, LValue LV, |
| 1976 | bool isInc, bool isPre); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1977 | //===--------------------------------------------------------------------===// |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1978 | // Declaration Emission |
| 1979 | //===--------------------------------------------------------------------===// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1980 | |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 1981 | /// EmitDecl - Emit a declaration. |
| 1982 | /// |
| 1983 | /// This function can be called with a null (unreachable) insert point. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1984 | void EmitDecl(const Decl &D); |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 1985 | |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 1986 | /// EmitVarDecl - Emit a local variable declaration. |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 1987 | /// |
| 1988 | /// This function can be called with a null (unreachable) insert point. |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 1989 | void EmitVarDecl(const VarDecl &D); |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 1990 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 1991 | void EmitScalarInit(const Expr *init, const ValueDecl *D, |
John McCall | a07398e | 2011-06-16 04:16:24 +0000 | [diff] [blame] | 1992 | LValue lvalue, bool capturedByInit); |
John McCall | 7acddac | 2011-06-17 06:42:21 +0000 | [diff] [blame] | 1993 | void EmitScalarInit(llvm::Value *init, LValue lvalue); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 1994 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1995 | typedef void SpecialInitFn(CodeGenFunction &Init, const VarDecl &D, |
| 1996 | llvm::Value *Address); |
| 1997 | |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 1998 | /// EmitAutoVarDecl - Emit an auto variable declaration. |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 1999 | /// |
| 2000 | /// This function can be called with a null (unreachable) insert point. |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 2001 | void EmitAutoVarDecl(const VarDecl &D); |
| 2002 | |
| 2003 | class AutoVarEmission { |
| 2004 | friend class CodeGenFunction; |
| 2005 | |
John McCall | 57b3b6a | 2011-02-22 07:16:58 +0000 | [diff] [blame] | 2006 | const VarDecl *Variable; |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 2007 | |
| 2008 | /// The alignment of the variable. |
| 2009 | CharUnits Alignment; |
| 2010 | |
| 2011 | /// The address of the alloca. Null if the variable was emitted |
| 2012 | /// as a global constant. |
| 2013 | llvm::Value *Address; |
| 2014 | |
| 2015 | llvm::Value *NRVOFlag; |
| 2016 | |
| 2017 | /// True if the variable is a __block variable. |
| 2018 | bool IsByRef; |
| 2019 | |
| 2020 | /// True if the variable is of aggregate type and has a constant |
| 2021 | /// initializer. |
| 2022 | bool IsConstantAggregate; |
| 2023 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 2024 | /// Non-null if we should use lifetime annotations. |
| 2025 | llvm::Value *SizeForLifetimeMarkers; |
| 2026 | |
John McCall | 57b3b6a | 2011-02-22 07:16:58 +0000 | [diff] [blame] | 2027 | struct Invalid {}; |
| 2028 | AutoVarEmission(Invalid) : Variable(0) {} |
| 2029 | |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 2030 | AutoVarEmission(const VarDecl &variable) |
John McCall | 57b3b6a | 2011-02-22 07:16:58 +0000 | [diff] [blame] | 2031 | : Variable(&variable), Address(0), NRVOFlag(0), |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 2032 | IsByRef(false), IsConstantAggregate(false), |
| 2033 | SizeForLifetimeMarkers(0) {} |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 2034 | |
| 2035 | bool wasEmittedAsGlobal() const { return Address == 0; } |
| 2036 | |
| 2037 | public: |
John McCall | 57b3b6a | 2011-02-22 07:16:58 +0000 | [diff] [blame] | 2038 | static AutoVarEmission invalid() { return AutoVarEmission(Invalid()); } |
| 2039 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 2040 | bool useLifetimeMarkers() const { return SizeForLifetimeMarkers != 0; } |
| 2041 | llvm::Value *getSizeForLifetimeMarkers() const { |
| 2042 | assert(useLifetimeMarkers()); |
| 2043 | return SizeForLifetimeMarkers; |
| 2044 | } |
| 2045 | |
| 2046 | /// Returns the raw, allocated address, which is not necessarily |
| 2047 | /// the address of the object itself. |
| 2048 | llvm::Value *getAllocatedAddress() const { |
| 2049 | return Address; |
| 2050 | } |
| 2051 | |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 2052 | /// Returns the address of the object within this declaration. |
| 2053 | /// Note that this does not chase the forwarding pointer for |
| 2054 | /// __block decls. |
| 2055 | llvm::Value *getObjectAddress(CodeGenFunction &CGF) const { |
| 2056 | if (!IsByRef) return Address; |
| 2057 | |
| 2058 | return CGF.Builder.CreateStructGEP(Address, |
John McCall | 57b3b6a | 2011-02-22 07:16:58 +0000 | [diff] [blame] | 2059 | CGF.getByRefValueLLVMField(Variable), |
| 2060 | Variable->getNameAsString()); |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 2061 | } |
| 2062 | }; |
| 2063 | AutoVarEmission EmitAutoVarAlloca(const VarDecl &var); |
| 2064 | void EmitAutoVarInit(const AutoVarEmission &emission); |
| 2065 | void EmitAutoVarCleanups(const AutoVarEmission &emission); |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 2066 | void emitAutoVarTypeCleanup(const AutoVarEmission &emission, |
| 2067 | QualType::DestructionKind dtorKind); |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 2068 | |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 2069 | void EmitStaticVarDecl(const VarDecl &D, |
| 2070 | llvm::GlobalValue::LinkageTypes Linkage); |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 2071 | |
| 2072 | /// EmitParmDecl - Emit a ParmVarDecl or an ImplicitParamDecl. |
Devang Patel | 093ac46 | 2011-03-03 20:13:15 +0000 | [diff] [blame] | 2073 | void EmitParmDecl(const VarDecl &D, llvm::Value *Arg, unsigned ArgNo); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2074 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 2075 | /// protectFromPeepholes - Protect a value that we're intending to |
| 2076 | /// store to the side, but which will probably be used later, from |
| 2077 | /// aggressive peepholing optimizations that might delete it. |
| 2078 | /// |
| 2079 | /// Pass the result to unprotectFromPeepholes to declare that |
| 2080 | /// protection is no longer required. |
| 2081 | /// |
| 2082 | /// There's no particular reason why this shouldn't apply to |
| 2083 | /// l-values, it's just that no existing peepholes work on pointers. |
| 2084 | PeepholeProtection protectFromPeepholes(RValue rvalue); |
| 2085 | void unprotectFromPeepholes(PeepholeProtection protection); |
| 2086 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2087 | //===--------------------------------------------------------------------===// |
| 2088 | // Statement Emission |
| 2089 | //===--------------------------------------------------------------------===// |
| 2090 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2091 | /// EmitStopPoint - Emit a debug stoppoint if we are emitting debug info. |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 2092 | void EmitStopPoint(const Stmt *S); |
| 2093 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2094 | /// EmitStmt - Emit the code for the statement \arg S. It is legal to call |
| 2095 | /// this function even if there is no current insertion point. |
| 2096 | /// |
| 2097 | /// This function may clear the current insertion point; callers should use |
| 2098 | /// EnsureInsertPoint if they wish to subsequently generate code without first |
| 2099 | /// calling EmitBlock, EmitBranch, or EmitStmt. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2100 | void EmitStmt(const Stmt *S); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 2101 | |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 2102 | /// EmitSimpleStmt - Try to emit a "simple" statement which does not |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2103 | /// necessarily require an insertion point or debug information; typically |
| 2104 | /// because the statement amounts to a jump or a container of other |
| 2105 | /// statements. |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 2106 | /// |
| 2107 | /// \return True if the statement was handled. |
| 2108 | bool EmitSimpleStmt(const Stmt *S); |
| 2109 | |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 2110 | RValue EmitCompoundStmt(const CompoundStmt &S, bool GetLast = false, |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 2111 | AggValueSlot AVS = AggValueSlot::ignored()); |
David Blaikie | a650485 | 2013-01-26 22:16:26 +0000 | [diff] [blame] | 2112 | RValue EmitCompoundStmtWithoutScope(const CompoundStmt &S, |
| 2113 | bool GetLast = false, AggValueSlot AVS = |
| 2114 | AggValueSlot::ignored()); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 2115 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2116 | /// EmitLabel - Emit the block for the given label. It is legal to call this |
| 2117 | /// function even if there is no current insertion point. |
Chris Lattner | ad8dcf4 | 2011-02-17 07:39:24 +0000 | [diff] [blame] | 2118 | void EmitLabel(const LabelDecl *D); // helper for EmitLabelStmt. |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 2119 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2120 | void EmitLabelStmt(const LabelStmt &S); |
Richard Smith | 534986f | 2012-04-14 00:33:13 +0000 | [diff] [blame] | 2121 | void EmitAttributedStmt(const AttributedStmt &S); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2122 | void EmitGotoStmt(const GotoStmt &S); |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 2123 | void EmitIndirectGotoStmt(const IndirectGotoStmt &S); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2124 | void EmitIfStmt(const IfStmt &S); |
| 2125 | void EmitWhileStmt(const WhileStmt &S); |
| 2126 | void EmitDoStmt(const DoStmt &S); |
| 2127 | void EmitForStmt(const ForStmt &S); |
| 2128 | void EmitReturnStmt(const ReturnStmt &S); |
| 2129 | void EmitDeclStmt(const DeclStmt &S); |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 2130 | void EmitBreakStmt(const BreakStmt &S); |
| 2131 | void EmitContinueStmt(const ContinueStmt &S); |
Devang Patel | 51b09f2 | 2007-10-04 23:45:31 +0000 | [diff] [blame] | 2132 | void EmitSwitchStmt(const SwitchStmt &S); |
| 2133 | void EmitDefaultStmt(const DefaultStmt &S); |
| 2134 | void EmitCaseStmt(const CaseStmt &S); |
Devang Patel | c049e4f | 2007-10-08 20:57:48 +0000 | [diff] [blame] | 2135 | void EmitCaseStmtRange(const CaseStmt &S); |
Chad Rosier | a23b91d | 2012-08-28 18:54:39 +0000 | [diff] [blame] | 2136 | void EmitAsmStmt(const AsmStmt &S); |
Tareq A. Siraj | 051303c | 2013-04-16 18:53:08 +0000 | [diff] [blame] | 2137 | void EmitCapturedStmt(const CapturedStmt &S); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2138 | |
Anders Carlsson | 3d8400d | 2008-08-30 19:51:14 +0000 | [diff] [blame] | 2139 | void EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S); |
Anders Carlsson | 64d5d6c | 2008-09-09 10:04:29 +0000 | [diff] [blame] | 2140 | void EmitObjCAtTryStmt(const ObjCAtTryStmt &S); |
| 2141 | void EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S); |
Chris Lattner | 10cac6f | 2008-11-15 21:26:17 +0000 | [diff] [blame] | 2142 | void EmitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt &S); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2143 | void EmitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt &S); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2144 | |
John McCall | 93c332a | 2011-05-28 21:13:02 +0000 | [diff] [blame] | 2145 | llvm::Constant *getUnwindResumeFn(); |
Douglas Gregor | 86a3a03 | 2010-05-16 01:24:12 +0000 | [diff] [blame] | 2146 | llvm::Constant *getUnwindResumeOrRethrowFn(); |
John McCall | 59a7000 | 2010-07-07 06:56:46 +0000 | [diff] [blame] | 2147 | void EnterCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); |
| 2148 | void ExitCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); |
John McCall | 9fc6a77 | 2010-02-19 09:25:03 +0000 | [diff] [blame] | 2149 | |
Anders Carlsson | 6815e94 | 2009-09-27 18:58:34 +0000 | [diff] [blame] | 2150 | void EmitCXXTryStmt(const CXXTryStmt &S); |
Richard Smith | ad762fc | 2011-04-14 22:09:26 +0000 | [diff] [blame] | 2151 | void EmitCXXForRangeStmt(const CXXForRangeStmt &S); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2152 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2153 | //===--------------------------------------------------------------------===// |
| 2154 | // LValue Expression Emission |
| 2155 | //===--------------------------------------------------------------------===// |
| 2156 | |
Daniel Dunbar | 13e8173 | 2009-02-05 07:09:07 +0000 | [diff] [blame] | 2157 | /// GetUndefRValue - Get an appropriate 'undef' rvalue for the given type. |
| 2158 | RValue GetUndefRValue(QualType Ty); |
| 2159 | |
Daniel Dunbar | ce1d38b | 2009-01-09 16:50:52 +0000 | [diff] [blame] | 2160 | /// EmitUnsupportedRValue - Emit a dummy r-value using the type of E |
| 2161 | /// and issue an ErrorUnsupported style diagnostic (using the |
| 2162 | /// provided Name). |
| 2163 | RValue EmitUnsupportedRValue(const Expr *E, |
| 2164 | const char *Name); |
| 2165 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2166 | /// EmitUnsupportedLValue - Emit a dummy l-value using the type of E and issue |
| 2167 | /// an ErrorUnsupported style diagnostic (using the provided Name). |
Daniel Dunbar | 6ba82a4 | 2008-08-25 20:45:57 +0000 | [diff] [blame] | 2168 | LValue EmitUnsupportedLValue(const Expr *E, |
| 2169 | const char *Name); |
| 2170 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2171 | /// EmitLValue - Emit code to compute a designator that specifies the location |
| 2172 | /// of the expression. |
| 2173 | /// |
| 2174 | /// This can return one of two things: a simple address or a bitfield |
| 2175 | /// reference. In either case, the LLVM Value* in the LValue structure is |
| 2176 | /// guaranteed to be an LLVM pointer type. |
| 2177 | /// |
| 2178 | /// If this returns a bitfield reference, nothing about the pointee type of |
| 2179 | /// the LLVM value is known: For example, it may not be a pointer to an |
| 2180 | /// integer. |
| 2181 | /// |
| 2182 | /// If this returns a normal address, and if the lvalue's C type is fixed |
| 2183 | /// size, this method guarantees that the returned pointer type will point to |
| 2184 | /// an LLVM type of the same size of the lvalue's type. If the lvalue has a |
| 2185 | /// variable length type, this is not possible. |
| 2186 | /// |
| 2187 | LValue EmitLValue(const Expr *E); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2188 | |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 2189 | /// \brief Same as EmitLValue but additionally we generate checking code to |
| 2190 | /// guard against undefined behavior. This is only suitable when we know |
| 2191 | /// that the address will be used to access the object. |
| 2192 | LValue EmitCheckedLValue(const Expr *E, TypeCheckKind TCK); |
Mike Stump | b14e62d | 2009-12-16 02:57:00 +0000 | [diff] [blame] | 2193 | |
John McCall | 9d232c8 | 2013-03-07 21:37:08 +0000 | [diff] [blame] | 2194 | RValue convertTempToRValue(llvm::Value *addr, QualType type); |
| 2195 | |
John McCall | 9eda3ab | 2013-03-07 21:37:17 +0000 | [diff] [blame] | 2196 | void EmitAtomicInit(Expr *E, LValue lvalue); |
| 2197 | |
| 2198 | RValue EmitAtomicLoad(LValue lvalue, |
| 2199 | AggValueSlot slot = AggValueSlot::ignored()); |
| 2200 | |
| 2201 | void EmitAtomicStore(RValue rvalue, LValue lvalue, bool isInit); |
| 2202 | |
John McCall | 26815d9 | 2010-10-27 20:58:56 +0000 | [diff] [blame] | 2203 | /// EmitToMemory - Change a scalar value from its value |
| 2204 | /// representation to its in-memory representation. |
| 2205 | llvm::Value *EmitToMemory(llvm::Value *Value, QualType Ty); |
| 2206 | |
| 2207 | /// EmitFromMemory - Change a scalar value from its memory |
| 2208 | /// representation to its value representation. |
| 2209 | llvm::Value *EmitFromMemory(llvm::Value *Value, QualType Ty); |
| 2210 | |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 2211 | /// EmitLoadOfScalar - Load a scalar value from an address, taking |
| 2212 | /// care to appropriately convert from the memory representation to |
| 2213 | /// the LLVM value representation. |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 2214 | llvm::Value *EmitLoadOfScalar(llvm::Value *Addr, bool Volatile, |
Dan Gohman | 3d5aff5 | 2010-10-14 23:06:10 +0000 | [diff] [blame] | 2215 | unsigned Alignment, QualType Ty, |
Manman Ren | b37a73d | 2013-04-04 21:53:22 +0000 | [diff] [blame] | 2216 | llvm::MDNode *TBAAInfo = 0, |
| 2217 | QualType TBAABaseTy = QualType(), |
| 2218 | uint64_t TBAAOffset = 0); |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 2219 | |
| 2220 | /// EmitLoadOfScalar - Load a scalar value from an address, taking |
| 2221 | /// care to appropriately convert from the memory representation to |
| 2222 | /// the LLVM value representation. The l-value must be a simple |
| 2223 | /// l-value. |
John McCall | a07398e | 2011-06-16 04:16:24 +0000 | [diff] [blame] | 2224 | llvm::Value *EmitLoadOfScalar(LValue lvalue); |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 2225 | |
| 2226 | /// EmitStoreOfScalar - Store a scalar value to an address, taking |
| 2227 | /// care to appropriately convert from the memory representation to |
| 2228 | /// the LLVM value representation. |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 2229 | void EmitStoreOfScalar(llvm::Value *Value, llvm::Value *Addr, |
Dan Gohman | 3d5aff5 | 2010-10-14 23:06:10 +0000 | [diff] [blame] | 2230 | bool Volatile, unsigned Alignment, QualType Ty, |
Manman Ren | b37a73d | 2013-04-04 21:53:22 +0000 | [diff] [blame] | 2231 | llvm::MDNode *TBAAInfo = 0, bool isInit = false, |
| 2232 | QualType TBAABaseTy = QualType(), |
| 2233 | uint64_t TBAAOffset = 0); |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 2234 | |
| 2235 | /// EmitStoreOfScalar - Store a scalar value to an address, taking |
| 2236 | /// care to appropriately convert from the memory representation to |
| 2237 | /// the LLVM value representation. The l-value must be a simple |
David Chisnall | 7a7ee30 | 2012-01-16 17:27:18 +0000 | [diff] [blame] | 2238 | /// l-value. The isInit flag indicates whether this is an initialization. |
| 2239 | /// If so, atomic qualifiers are ignored and the store is always non-atomic. |
| 2240 | void EmitStoreOfScalar(llvm::Value *value, LValue lvalue, bool isInit=false); |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 2241 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2242 | /// EmitLoadOfLValue - Given an expression that represents a value lvalue, |
| 2243 | /// this method emits the address of the lvalue, then loads the result as an |
| 2244 | /// rvalue, returning the rvalue. |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 2245 | RValue EmitLoadOfLValue(LValue V); |
| 2246 | RValue EmitLoadOfExtVectorElementLValue(LValue V); |
| 2247 | RValue EmitLoadOfBitfieldLValue(LValue LV); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2248 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2249 | /// EmitStoreThroughLValue - Store the specified rvalue into the specified |
| 2250 | /// lvalue, where both are guaranteed to the have the same type, and that type |
| 2251 | /// is 'Ty'. |
David Chisnall | 7a7ee30 | 2012-01-16 17:27:18 +0000 | [diff] [blame] | 2252 | void EmitStoreThroughLValue(RValue Src, LValue Dst, bool isInit=false); |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 2253 | void EmitStoreThroughExtVectorComponentLValue(RValue Src, LValue Dst); |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 2254 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2255 | /// EmitStoreThroughLValue - Store Src into Dst with same constraints as |
| 2256 | /// EmitStoreThroughLValue. |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 2257 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2258 | /// \param Result [out] - If non-null, this will be set to a Value* for the |
| 2259 | /// bit-field contents after the store, appropriate for use as the result of |
| 2260 | /// an assignment to the bit-field. |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 2261 | void EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst, |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 2262 | llvm::Value **Result=0); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2263 | |
John McCall | 83ce9d4 | 2010-11-16 23:07:28 +0000 | [diff] [blame] | 2264 | /// Emit an l-value for an assignment (simple or compound) of complex type. |
| 2265 | LValue EmitComplexAssignmentLValue(const BinaryOperator *E); |
John McCall | 2a41637 | 2010-12-05 02:00:02 +0000 | [diff] [blame] | 2266 | LValue EmitComplexCompoundAssignmentLValue(const CompoundAssignOperator *E); |
John McCall | 83ce9d4 | 2010-11-16 23:07:28 +0000 | [diff] [blame] | 2267 | |
Chris Lattner | fc8f0e1 | 2011-04-15 05:22:18 +0000 | [diff] [blame] | 2268 | // Note: only available for agg return types |
Daniel Dunbar | 80e62c2 | 2008-09-04 03:20:13 +0000 | [diff] [blame] | 2269 | LValue EmitBinaryOperatorLValue(const BinaryOperator *E); |
John McCall | 2a41637 | 2010-12-05 02:00:02 +0000 | [diff] [blame] | 2270 | LValue EmitCompoundAssignmentLValue(const CompoundAssignOperator *E); |
Daniel Dunbar | 5b5c9ef | 2009-02-11 20:59:32 +0000 | [diff] [blame] | 2271 | // Note: only available for agg return types |
Christopher Lamb | 22c940e | 2007-12-29 05:02:41 +0000 | [diff] [blame] | 2272 | LValue EmitCallExprLValue(const CallExpr *E); |
Daniel Dunbar | 5b5c9ef | 2009-02-11 20:59:32 +0000 | [diff] [blame] | 2273 | // Note: only available for agg return types |
| 2274 | LValue EmitVAArgExprLValue(const VAArgExpr *E); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2275 | LValue EmitDeclRefLValue(const DeclRefExpr *E); |
| 2276 | LValue EmitStringLiteralLValue(const StringLiteral *E); |
Chris Lattner | eaf2bb8 | 2009-02-24 22:18:39 +0000 | [diff] [blame] | 2277 | LValue EmitObjCEncodeExprLValue(const ObjCEncodeExpr *E); |
Chris Lattner | d9f6910 | 2008-08-10 01:53:14 +0000 | [diff] [blame] | 2278 | LValue EmitPredefinedLValue(const PredefinedExpr *E); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2279 | LValue EmitUnaryOpLValue(const UnaryOperator *E); |
Richard Smith | a0a628f | 2013-02-23 02:53:19 +0000 | [diff] [blame] | 2280 | LValue EmitArraySubscriptExpr(const ArraySubscriptExpr *E, |
| 2281 | bool Accessed = false); |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 2282 | LValue EmitExtVectorElementExpr(const ExtVectorElementExpr *E); |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 2283 | LValue EmitMemberExpr(const MemberExpr *E); |
Fariborz Jahanian | 820bca4 | 2009-12-09 23:35:29 +0000 | [diff] [blame] | 2284 | LValue EmitObjCIsaExpr(const ObjCIsaExpr *E); |
Eli Friedman | 06e863f | 2008-05-13 23:18:27 +0000 | [diff] [blame] | 2285 | LValue EmitCompoundLiteralLValue(const CompoundLiteralExpr *E); |
Richard Smith | 13ec910 | 2012-05-14 21:57:21 +0000 | [diff] [blame] | 2286 | LValue EmitInitListLValue(const InitListExpr *E); |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 2287 | LValue EmitConditionalOperatorLValue(const AbstractConditionalOperator *E); |
Chris Lattner | 75dfeda | 2009-03-18 18:28:57 +0000 | [diff] [blame] | 2288 | LValue EmitCastLValue(const CastExpr *E); |
Douglas Gregor | ed8abf1 | 2010-07-08 06:14:04 +0000 | [diff] [blame] | 2289 | LValue EmitNullInitializationLValue(const CXXScalarValueInitExpr *E); |
Douglas Gregor | 03e8003 | 2011-06-21 17:03:29 +0000 | [diff] [blame] | 2290 | LValue EmitMaterializeTemporaryExpr(const MaterializeTemporaryExpr *E); |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 2291 | LValue EmitOpaqueValueLValue(const OpaqueValueExpr *e); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2292 | |
Eli Friedman | 377ecc7 | 2012-04-16 03:54:45 +0000 | [diff] [blame] | 2293 | RValue EmitRValueForField(LValue LV, const FieldDecl *FD); |
Anton Korobeynikov | eaf856d | 2012-04-13 11:22:00 +0000 | [diff] [blame] | 2294 | |
John McCall | dd2ecee | 2012-03-10 03:05:10 +0000 | [diff] [blame] | 2295 | class ConstantEmission { |
| 2296 | llvm::PointerIntPair<llvm::Constant*, 1, bool> ValueAndIsReference; |
| 2297 | ConstantEmission(llvm::Constant *C, bool isReference) |
| 2298 | : ValueAndIsReference(C, isReference) {} |
| 2299 | public: |
| 2300 | ConstantEmission() {} |
| 2301 | static ConstantEmission forReference(llvm::Constant *C) { |
| 2302 | return ConstantEmission(C, true); |
| 2303 | } |
| 2304 | static ConstantEmission forValue(llvm::Constant *C) { |
| 2305 | return ConstantEmission(C, false); |
| 2306 | } |
| 2307 | |
| 2308 | operator bool() const { return ValueAndIsReference.getOpaqueValue() != 0; } |
| 2309 | |
| 2310 | bool isReference() const { return ValueAndIsReference.getInt(); } |
| 2311 | LValue getReferenceLValue(CodeGenFunction &CGF, Expr *refExpr) const { |
| 2312 | assert(isReference()); |
| 2313 | return CGF.MakeNaturalAlignAddrLValue(ValueAndIsReference.getPointer(), |
| 2314 | refExpr->getType()); |
| 2315 | } |
| 2316 | |
| 2317 | llvm::Constant *getValue() const { |
| 2318 | assert(!isReference()); |
| 2319 | return ValueAndIsReference.getPointer(); |
| 2320 | } |
| 2321 | }; |
| 2322 | |
John McCall | f4b88a4 | 2012-03-10 09:33:50 +0000 | [diff] [blame] | 2323 | ConstantEmission tryEmitAsConstant(DeclRefExpr *refExpr); |
John McCall | dd2ecee | 2012-03-10 03:05:10 +0000 | [diff] [blame] | 2324 | |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 2325 | RValue EmitPseudoObjectRValue(const PseudoObjectExpr *e, |
| 2326 | AggValueSlot slot = AggValueSlot::ignored()); |
| 2327 | LValue EmitPseudoObjectLValue(const PseudoObjectExpr *e); |
| 2328 | |
Daniel Dunbar | 2a03192 | 2009-04-22 05:08:15 +0000 | [diff] [blame] | 2329 | llvm::Value *EmitIvarOffset(const ObjCInterfaceDecl *Interface, |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 2330 | const ObjCIvarDecl *Ivar); |
Eli Friedman | 377ecc7 | 2012-04-16 03:54:45 +0000 | [diff] [blame] | 2331 | LValue EmitLValueForField(LValue Base, const FieldDecl* Field); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2332 | |
Anders Carlsson | 06a2970 | 2010-01-29 05:24:29 +0000 | [diff] [blame] | 2333 | /// EmitLValueForFieldInitialization - Like EmitLValueForField, except that |
| 2334 | /// if the Field is a reference, this will return the address of the reference |
| 2335 | /// and not the address of the value stored in the reference. |
Eli Friedman | 377ecc7 | 2012-04-16 03:54:45 +0000 | [diff] [blame] | 2336 | LValue EmitLValueForFieldInitialization(LValue Base, |
| 2337 | const FieldDecl* Field); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2338 | |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 2339 | LValue EmitLValueForIvar(QualType ObjectTy, |
| 2340 | llvm::Value* Base, const ObjCIvarDecl *Ivar, |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 2341 | unsigned CVRQualifiers); |
| 2342 | |
Anders Carlsson | b58d017 | 2009-05-30 23:23:33 +0000 | [diff] [blame] | 2343 | LValue EmitCXXConstructLValue(const CXXConstructExpr *E); |
Anders Carlsson | e61c9e8 | 2009-05-30 23:30:54 +0000 | [diff] [blame] | 2344 | LValue EmitCXXBindTemporaryLValue(const CXXBindTemporaryExpr *E); |
Eli Friedman | 31a3702 | 2012-02-08 05:34:55 +0000 | [diff] [blame] | 2345 | LValue EmitLambdaLValue(const LambdaExpr *E); |
Mike Stump | c2e84ae | 2009-11-15 08:09:41 +0000 | [diff] [blame] | 2346 | LValue EmitCXXTypeidLValue(const CXXTypeidExpr *E); |
Nico Weber | c5f8046 | 2012-10-11 10:13:44 +0000 | [diff] [blame] | 2347 | LValue EmitCXXUuidofLValue(const CXXUuidofExpr *E); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2348 | |
Daniel Dunbar | 0a04d77 | 2008-08-23 10:51:21 +0000 | [diff] [blame] | 2349 | LValue EmitObjCMessageExprLValue(const ObjCMessageExpr *E); |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 2350 | LValue EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E); |
Chris Lattner | 6545994 | 2009-04-25 19:35:26 +0000 | [diff] [blame] | 2351 | LValue EmitStmtExprLValue(const StmtExpr *E); |
Fariborz Jahanian | 8bfd31f | 2009-10-22 22:57:31 +0000 | [diff] [blame] | 2352 | LValue EmitPointerToDataMemberBinaryExpr(const BinaryOperator *E); |
Fariborz Jahanian | 03b2960 | 2010-06-17 19:56:20 +0000 | [diff] [blame] | 2353 | LValue EmitObjCSelectorLValue(const ObjCSelectorExpr *E); |
John McCall | 189d6ef | 2010-10-09 01:34:31 +0000 | [diff] [blame] | 2354 | void EmitDeclRefExprDbgValue(const DeclRefExpr *E, llvm::Constant *Init); |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 2355 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2356 | //===--------------------------------------------------------------------===// |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 2357 | // Scalar Expression Emission |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2358 | //===--------------------------------------------------------------------===// |
| 2359 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2360 | /// EmitCall - Generate a call of the given function, expecting the given |
| 2361 | /// result type, and using the given argument list which specifies both the |
| 2362 | /// LLVM arguments and the types they were derived from. |
Daniel Dunbar | c0ef9f5 | 2009-02-20 18:06:48 +0000 | [diff] [blame] | 2363 | /// |
Mike Stump | f71d232 | 2009-11-30 20:08:49 +0000 | [diff] [blame] | 2364 | /// \param TargetDecl - If given, the decl of the function in a direct call; |
| 2365 | /// used to set attributes on the call (noreturn, etc.). |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 2366 | RValue EmitCall(const CGFunctionInfo &FnInfo, |
| 2367 | llvm::Value *Callee, |
Anders Carlsson | f3c47c9 | 2009-12-24 19:25:24 +0000 | [diff] [blame] | 2368 | ReturnValueSlot ReturnValue, |
Daniel Dunbar | c0ef9f5 | 2009-02-20 18:06:48 +0000 | [diff] [blame] | 2369 | const CallArgList &Args, |
David Chisnall | dd5c98f | 2010-05-01 11:15:56 +0000 | [diff] [blame] | 2370 | const Decl *TargetDecl = 0, |
David Chisnall | 4b02afc | 2010-05-02 13:41:58 +0000 | [diff] [blame] | 2371 | llvm::Instruction **callOrInvoke = 0); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2372 | |
Anders Carlsson | 31777a2 | 2009-12-24 19:08:58 +0000 | [diff] [blame] | 2373 | RValue EmitCall(QualType FnType, llvm::Value *Callee, |
Anders Carlsson | d2490a9 | 2009-12-24 20:40:36 +0000 | [diff] [blame] | 2374 | ReturnValueSlot ReturnValue, |
Anders Carlsson | 9864771 | 2009-05-27 01:22:39 +0000 | [diff] [blame] | 2375 | CallExpr::const_arg_iterator ArgBeg, |
| 2376 | CallExpr::const_arg_iterator ArgEnd, |
| 2377 | const Decl *TargetDecl = 0); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2378 | RValue EmitCallExpr(const CallExpr *E, |
Anders Carlsson | d2490a9 | 2009-12-24 20:40:36 +0000 | [diff] [blame] | 2379 | ReturnValueSlot ReturnValue = ReturnValueSlot()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2380 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 2381 | llvm::CallInst *EmitRuntimeCall(llvm::Value *callee, |
| 2382 | const Twine &name = ""); |
| 2383 | llvm::CallInst *EmitRuntimeCall(llvm::Value *callee, |
| 2384 | ArrayRef<llvm::Value*> args, |
| 2385 | const Twine &name = ""); |
| 2386 | llvm::CallInst *EmitNounwindRuntimeCall(llvm::Value *callee, |
| 2387 | const Twine &name = ""); |
| 2388 | llvm::CallInst *EmitNounwindRuntimeCall(llvm::Value *callee, |
| 2389 | ArrayRef<llvm::Value*> args, |
| 2390 | const Twine &name = ""); |
| 2391 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 2392 | llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee, |
Chris Lattner | 2d3ba4f | 2011-07-23 17:14:25 +0000 | [diff] [blame] | 2393 | ArrayRef<llvm::Value *> Args, |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 2394 | const Twine &Name = ""); |
Jay Foad | 4c7d9f1 | 2011-07-15 08:37:34 +0000 | [diff] [blame] | 2395 | llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee, |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 2396 | const Twine &Name = ""); |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 2397 | llvm::CallSite EmitRuntimeCallOrInvoke(llvm::Value *callee, |
| 2398 | ArrayRef<llvm::Value*> args, |
| 2399 | const Twine &name = ""); |
| 2400 | llvm::CallSite EmitRuntimeCallOrInvoke(llvm::Value *callee, |
| 2401 | const Twine &name = ""); |
| 2402 | void EmitNoreturnRuntimeCallOrInvoke(llvm::Value *callee, |
| 2403 | ArrayRef<llvm::Value*> args); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 2404 | |
Anders Carlsson | 566abee | 2009-11-13 04:45:41 +0000 | [diff] [blame] | 2405 | llvm::Value *BuildVirtualCall(const CXXMethodDecl *MD, llvm::Value *This, |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 2406 | llvm::Type *Ty); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2407 | llvm::Value *BuildVirtualCall(const CXXDestructorDecl *DD, CXXDtorType Type, |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 2408 | llvm::Value *This, llvm::Type *Ty); |
Fariborz Jahanian | 2726267 | 2011-01-20 17:19:02 +0000 | [diff] [blame] | 2409 | llvm::Value *BuildAppleKextVirtualCall(const CXXMethodDecl *MD, |
| 2410 | NestedNameSpecifier *Qual, |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 2411 | llvm::Type *Ty); |
Fariborz Jahanian | ccd5259 | 2011-02-01 23:22:34 +0000 | [diff] [blame] | 2412 | |
| 2413 | llvm::Value *BuildAppleKextVirtualDestructorCall(const CXXDestructorDecl *DD, |
| 2414 | CXXDtorType Type, |
Fariborz Jahanian | 771c678 | 2011-02-03 19:27:17 +0000 | [diff] [blame] | 2415 | const CXXRecordDecl *RD); |
Anders Carlsson | 566abee | 2009-11-13 04:45:41 +0000 | [diff] [blame] | 2416 | |
Anders Carlsson | b9de2c5 | 2009-05-11 23:37:08 +0000 | [diff] [blame] | 2417 | RValue EmitCXXMemberCall(const CXXMethodDecl *MD, |
Richard Smith | 4def70d | 2012-10-09 19:52:38 +0000 | [diff] [blame] | 2418 | SourceLocation CallLoc, |
Anders Carlsson | b9de2c5 | 2009-05-11 23:37:08 +0000 | [diff] [blame] | 2419 | llvm::Value *Callee, |
Anders Carlsson | a1736c0 | 2009-12-24 21:13:40 +0000 | [diff] [blame] | 2420 | ReturnValueSlot ReturnValue, |
Anders Carlsson | b9de2c5 | 2009-05-11 23:37:08 +0000 | [diff] [blame] | 2421 | llvm::Value *This, |
Timur Iskhodzhanov | 59660c2 | 2013-02-13 08:37:51 +0000 | [diff] [blame] | 2422 | llvm::Value *ImplicitParam, |
| 2423 | QualType ImplicitParamTy, |
Anders Carlsson | b9de2c5 | 2009-05-11 23:37:08 +0000 | [diff] [blame] | 2424 | CallExpr::const_arg_iterator ArgBeg, |
| 2425 | CallExpr::const_arg_iterator ArgEnd); |
Anders Carlsson | a1736c0 | 2009-12-24 21:13:40 +0000 | [diff] [blame] | 2426 | RValue EmitCXXMemberCallExpr(const CXXMemberCallExpr *E, |
| 2427 | ReturnValueSlot ReturnValue); |
| 2428 | RValue EmitCXXMemberPointerCallExpr(const CXXMemberCallExpr *E, |
| 2429 | ReturnValueSlot ReturnValue); |
Ted Kremenek | 5549976 | 2008-06-17 02:43:46 +0000 | [diff] [blame] | 2430 | |
Anders Carlsson | a2447e0 | 2011-05-08 20:32:23 +0000 | [diff] [blame] | 2431 | llvm::Value *EmitCXXOperatorMemberCallee(const CXXOperatorCallExpr *E, |
| 2432 | const CXXMethodDecl *MD, |
| 2433 | llvm::Value *This); |
Anders Carlsson | 0f29463 | 2009-05-27 04:18:27 +0000 | [diff] [blame] | 2434 | RValue EmitCXXOperatorMemberCallExpr(const CXXOperatorCallExpr *E, |
Anders Carlsson | a1736c0 | 2009-12-24 21:13:40 +0000 | [diff] [blame] | 2435 | const CXXMethodDecl *MD, |
| 2436 | ReturnValueSlot ReturnValue); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2437 | |
Peter Collingbourne | 6c0aa5f | 2011-10-06 18:29:37 +0000 | [diff] [blame] | 2438 | RValue EmitCUDAKernelCallExpr(const CUDAKernelCallExpr *E, |
| 2439 | ReturnValueSlot ReturnValue); |
| 2440 | |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2441 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2442 | RValue EmitBuiltinExpr(const FunctionDecl *FD, |
Daniel Dunbar | ef2abfe | 2009-02-16 22:43:43 +0000 | [diff] [blame] | 2443 | unsigned BuiltinID, const CallExpr *E); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2444 | |
Anders Carlsson | a1736c0 | 2009-12-24 21:13:40 +0000 | [diff] [blame] | 2445 | RValue EmitBlockCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue); |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 2446 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2447 | /// EmitTargetBuiltinExpr - Emit the given builtin call. Returns 0 if the call |
| 2448 | /// is unhandled by the current target. |
Daniel Dunbar | f02e9dd | 2008-10-10 00:24:54 +0000 | [diff] [blame] | 2449 | llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
| 2450 | |
Chris Lattner | 2752c01 | 2010-03-03 19:03:45 +0000 | [diff] [blame] | 2451 | llvm::Value *EmitARMBuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2452 | llvm::Value *EmitNeonCall(llvm::Function *F, |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 2453 | SmallVectorImpl<llvm::Value*> &O, |
Bob Wilson | db3d4d0 | 2010-12-08 22:37:56 +0000 | [diff] [blame] | 2454 | const char *name, |
Nate Begeman | 61eecf5 | 2010-06-14 05:21:25 +0000 | [diff] [blame] | 2455 | unsigned shift = 0, bool rightshift = false); |
Bob Wilson | cf55652 | 2010-12-07 22:40:02 +0000 | [diff] [blame] | 2456 | llvm::Value *EmitNeonSplat(llvm::Value *V, llvm::Constant *Idx); |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 2457 | llvm::Value *EmitNeonShiftVector(llvm::Value *V, llvm::Type *Ty, |
Nate Begeman | 61eecf5 | 2010-06-14 05:21:25 +0000 | [diff] [blame] | 2458 | bool negateForRightShift); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2459 | |
Bill Wendling | 795b100 | 2012-02-22 09:30:11 +0000 | [diff] [blame] | 2460 | llvm::Value *BuildVector(ArrayRef<llvm::Value*> Ops); |
Anders Carlsson | 564f1de | 2007-12-09 23:17:02 +0000 | [diff] [blame] | 2461 | llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
| 2462 | llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2463 | |
Daniel Dunbar | ed7c618 | 2008-08-20 00:28:19 +0000 | [diff] [blame] | 2464 | llvm::Value *EmitObjCProtocolExpr(const ObjCProtocolExpr *E); |
Chris Lattner | 7f02f72 | 2007-08-24 05:35:26 +0000 | [diff] [blame] | 2465 | llvm::Value *EmitObjCStringLiteral(const ObjCStringLiteral *E); |
Patrick Beard | eb382ec | 2012-04-19 00:25:12 +0000 | [diff] [blame] | 2466 | llvm::Value *EmitObjCBoxedExpr(const ObjCBoxedExpr *E); |
Ted Kremenek | ebcb57a | 2012-03-06 20:05:56 +0000 | [diff] [blame] | 2467 | llvm::Value *EmitObjCArrayLiteral(const ObjCArrayLiteral *E); |
| 2468 | llvm::Value *EmitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E); |
| 2469 | llvm::Value *EmitObjCCollectionLiteral(const Expr *E, |
| 2470 | const ObjCMethodDecl *MethodWithObjects); |
Chris Lattner | 8fdf328 | 2008-06-24 17:04:18 +0000 | [diff] [blame] | 2471 | llvm::Value *EmitObjCSelectorExpr(const ObjCSelectorExpr *E); |
John McCall | ef072fd | 2010-05-22 01:48:05 +0000 | [diff] [blame] | 2472 | RValue EmitObjCMessageExpr(const ObjCMessageExpr *E, |
| 2473 | ReturnValueSlot Return = ReturnValueSlot()); |
Chris Lattner | 8fdf328 | 2008-06-24 17:04:18 +0000 | [diff] [blame] | 2474 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2475 | /// Retrieves the default cleanup kind for an ARC cleanup. |
| 2476 | /// Except under -fobjc-arc-eh, ARC cleanups are normal-only. |
| 2477 | CleanupKind getARCCleanupKind() { |
| 2478 | return CGM.getCodeGenOpts().ObjCAutoRefCountExceptions |
| 2479 | ? NormalAndEHCleanup : NormalCleanup; |
| 2480 | } |
| 2481 | |
| 2482 | // ARC primitives. |
| 2483 | void EmitARCInitWeak(llvm::Value *value, llvm::Value *addr); |
| 2484 | void EmitARCDestroyWeak(llvm::Value *addr); |
| 2485 | llvm::Value *EmitARCLoadWeak(llvm::Value *addr); |
| 2486 | llvm::Value *EmitARCLoadWeakRetained(llvm::Value *addr); |
| 2487 | llvm::Value *EmitARCStoreWeak(llvm::Value *value, llvm::Value *addr, |
| 2488 | bool ignored); |
| 2489 | void EmitARCCopyWeak(llvm::Value *dst, llvm::Value *src); |
| 2490 | void EmitARCMoveWeak(llvm::Value *dst, llvm::Value *src); |
| 2491 | llvm::Value *EmitARCRetainAutorelease(QualType type, llvm::Value *value); |
| 2492 | llvm::Value *EmitARCRetainAutoreleaseNonBlock(llvm::Value *value); |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 2493 | llvm::Value *EmitARCStoreStrong(LValue lvalue, llvm::Value *value, |
John McCall | 5b07e80 | 2013-03-13 03:10:54 +0000 | [diff] [blame] | 2494 | bool resultIgnored); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2495 | llvm::Value *EmitARCStoreStrongCall(llvm::Value *addr, llvm::Value *value, |
John McCall | 5b07e80 | 2013-03-13 03:10:54 +0000 | [diff] [blame] | 2496 | bool resultIgnored); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2497 | llvm::Value *EmitARCRetain(QualType type, llvm::Value *value); |
| 2498 | llvm::Value *EmitARCRetainNonBlock(llvm::Value *value); |
John McCall | 348f16f | 2011-10-04 06:23:45 +0000 | [diff] [blame] | 2499 | llvm::Value *EmitARCRetainBlock(llvm::Value *value, bool mandatory); |
John McCall | 5b07e80 | 2013-03-13 03:10:54 +0000 | [diff] [blame] | 2500 | void EmitARCDestroyStrong(llvm::Value *addr, ARCPreciseLifetime_t precise); |
| 2501 | void EmitARCRelease(llvm::Value *value, ARCPreciseLifetime_t precise); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2502 | llvm::Value *EmitARCAutorelease(llvm::Value *value); |
| 2503 | llvm::Value *EmitARCAutoreleaseReturnValue(llvm::Value *value); |
| 2504 | llvm::Value *EmitARCRetainAutoreleaseReturnValue(llvm::Value *value); |
| 2505 | llvm::Value *EmitARCRetainAutoreleasedReturnValue(llvm::Value *value); |
| 2506 | |
| 2507 | std::pair<LValue,llvm::Value*> |
| 2508 | EmitARCStoreAutoreleasing(const BinaryOperator *e); |
| 2509 | std::pair<LValue,llvm::Value*> |
| 2510 | EmitARCStoreStrong(const BinaryOperator *e, bool ignored); |
| 2511 | |
John McCall | 2b014d6 | 2011-10-01 10:32:24 +0000 | [diff] [blame] | 2512 | llvm::Value *EmitObjCThrowOperand(const Expr *expr); |
| 2513 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2514 | llvm::Value *EmitObjCProduceObject(QualType T, llvm::Value *Ptr); |
| 2515 | llvm::Value *EmitObjCConsumeObject(QualType T, llvm::Value *Ptr); |
| 2516 | llvm::Value *EmitObjCExtendObjectLifetime(QualType T, llvm::Value *Ptr); |
| 2517 | |
John McCall | 348f16f | 2011-10-04 06:23:45 +0000 | [diff] [blame] | 2518 | llvm::Value *EmitARCExtendBlockObject(const Expr *expr); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2519 | llvm::Value *EmitARCRetainScalarExpr(const Expr *expr); |
| 2520 | llvm::Value *EmitARCRetainAutoreleaseScalarExpr(const Expr *expr); |
| 2521 | |
John McCall | b6a6079 | 2013-03-23 02:35:54 +0000 | [diff] [blame] | 2522 | void EmitARCIntrinsicUse(llvm::ArrayRef<llvm::Value*> values); |
| 2523 | |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 2524 | static Destroyer destroyARCStrongImprecise; |
| 2525 | static Destroyer destroyARCStrongPrecise; |
| 2526 | static Destroyer destroyARCWeak; |
| 2527 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2528 | void EmitObjCAutoreleasePoolPop(llvm::Value *Ptr); |
| 2529 | llvm::Value *EmitObjCAutoreleasePoolPush(); |
| 2530 | llvm::Value *EmitObjCMRRAutoreleasePoolPush(); |
| 2531 | void EmitObjCAutoreleasePoolCleanup(llvm::Value *Ptr); |
| 2532 | void EmitObjCMRRAutoreleasePoolPop(llvm::Value *Ptr); |
| 2533 | |
Anders Carlsson | 4029ca7 | 2009-05-20 00:24:07 +0000 | [diff] [blame] | 2534 | /// EmitReferenceBindingToExpr - Emits a reference binding to the passed in |
| 2535 | /// 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] | 2536 | RValue EmitReferenceBindingToExpr(const Expr* E, |
Anders Carlsson | 32f36ba | 2010-06-26 16:35:32 +0000 | [diff] [blame] | 2537 | const NamedDecl *InitializedDecl); |
Anders Carlsson | 3aba093 | 2010-01-31 18:34:51 +0000 | [diff] [blame] | 2538 | |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 2539 | //===--------------------------------------------------------------------===// |
Chris Lattner | bfc0c1a | 2007-08-26 23:13:56 +0000 | [diff] [blame] | 2540 | // Expression Emission |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 2541 | //===--------------------------------------------------------------------===// |
Chris Lattner | bfc0c1a | 2007-08-26 23:13:56 +0000 | [diff] [blame] | 2542 | |
| 2543 | // Expressions are broken into three classes: scalar, complex, aggregate. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2544 | |
| 2545 | /// EmitScalarExpr - Emit the computation of the specified expression of LLVM |
| 2546 | /// scalar type, returning the result. |
Anders Carlsson | 14c5cbf | 2009-08-16 07:36:22 +0000 | [diff] [blame] | 2547 | llvm::Value *EmitScalarExpr(const Expr *E , bool IgnoreResultAssign = false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2548 | |
Chris Lattner | 3707b25 | 2007-08-26 06:48:56 +0000 | [diff] [blame] | 2549 | /// EmitScalarConversion - Emit a conversion from the specified type to the |
| 2550 | /// specified destination type, both of which are LLVM scalar types. |
| 2551 | llvm::Value *EmitScalarConversion(llvm::Value *Src, QualType SrcTy, |
| 2552 | QualType DstTy); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2553 | |
Chris Lattner | 4f1a7b3 | 2007-08-26 16:34:22 +0000 | [diff] [blame] | 2554 | /// EmitComplexToScalarConversion - Emit a conversion from the specified |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2555 | /// complex type to the specified destination type, where the destination type |
| 2556 | /// is an LLVM scalar type. |
Chris Lattner | 4f1a7b3 | 2007-08-26 16:34:22 +0000 | [diff] [blame] | 2557 | llvm::Value *EmitComplexToScalarConversion(ComplexPairTy Src, QualType SrcTy, |
| 2558 | QualType DstTy); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2559 | |
| 2560 | |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 2561 | /// EmitAggExpr - Emit the computation of the specified expression |
| 2562 | /// of aggregate type. The result is computed into the given slot, |
| 2563 | /// which may be null to indicate that the value is not needed. |
John McCall | e0c1168 | 2012-07-02 23:58:38 +0000 | [diff] [blame] | 2564 | void EmitAggExpr(const Expr *E, AggValueSlot AS); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2565 | |
Daniel Dunbar | 18aba0d | 2010-02-05 19:38:31 +0000 | [diff] [blame] | 2566 | /// EmitAggExprToLValue - Emit the computation of the specified expression of |
| 2567 | /// aggregate type into a temporary LValue. |
| 2568 | LValue EmitAggExprToLValue(const Expr *E); |
| 2569 | |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 2570 | /// EmitGCMemmoveCollectable - Emit special API for structs with object |
| 2571 | /// pointers. |
| 2572 | void EmitGCMemmoveCollectable(llvm::Value *DestPtr, llvm::Value *SrcPtr, |
Fariborz Jahanian | 08c3213 | 2009-08-31 19:33:16 +0000 | [diff] [blame] | 2573 | QualType Ty); |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 2574 | |
John McCall | 0c24c80 | 2011-06-24 23:21:27 +0000 | [diff] [blame] | 2575 | /// EmitExtendGCLifetime - Given a pointer to an Objective-C object, |
| 2576 | /// make sure it survives garbage collection until this point. |
| 2577 | void EmitExtendGCLifetime(llvm::Value *object); |
| 2578 | |
Chris Lattner | b6ef18a | 2007-08-21 05:54:00 +0000 | [diff] [blame] | 2579 | /// EmitComplexExpr - Emit the computation of the specified expression of |
Chris Lattner | 23b1cdb | 2007-08-23 23:43:33 +0000 | [diff] [blame] | 2580 | /// complex type, returning the result. |
John McCall | b418d74 | 2010-11-16 10:08:07 +0000 | [diff] [blame] | 2581 | ComplexPairTy EmitComplexExpr(const Expr *E, |
| 2582 | bool IgnoreReal = false, |
| 2583 | bool IgnoreImag = false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2584 | |
John McCall | 9d232c8 | 2013-03-07 21:37:08 +0000 | [diff] [blame] | 2585 | /// EmitComplexExprIntoLValue - Emit the given expression of complex |
| 2586 | /// type and place its result into the specified l-value. |
| 2587 | void EmitComplexExprIntoLValue(const Expr *E, LValue dest, bool isInit); |
Daniel Dunbar | 7f8ea5c | 2008-08-30 05:35:15 +0000 | [diff] [blame] | 2588 | |
John McCall | 9d232c8 | 2013-03-07 21:37:08 +0000 | [diff] [blame] | 2589 | /// EmitStoreOfComplex - Store a complex number into the specified l-value. |
| 2590 | void EmitStoreOfComplex(ComplexPairTy V, LValue dest, bool isInit); |
| 2591 | |
| 2592 | /// EmitLoadOfComplex - Load a complex number from the specified l-value. |
| 2593 | ComplexPairTy EmitLoadOfComplex(LValue src); |
Chris Lattner | 2621fd1 | 2008-05-08 05:58:21 +0000 | [diff] [blame] | 2594 | |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 2595 | /// CreateStaticVarDecl - Create a zero-initialized LLVM global for |
| 2596 | /// a static local variable. |
Chandler Carruth | 0f30a12 | 2012-03-30 19:44:53 +0000 | [diff] [blame] | 2597 | llvm::GlobalVariable *CreateStaticVarDecl(const VarDecl &D, |
| 2598 | const char *Separator, |
| 2599 | llvm::GlobalValue::LinkageTypes Linkage); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2600 | |
Chandler Carruth | 0f30a12 | 2012-03-30 19:44:53 +0000 | [diff] [blame] | 2601 | /// AddInitializerToStaticVarDecl - Add the initializer for 'D' to the |
| 2602 | /// global variable that has already been created for it. If the initializer |
| 2603 | /// has a different type than GV does, this may free GV and return a different |
| 2604 | /// one. Otherwise it just returns GV. |
| 2605 | llvm::GlobalVariable * |
| 2606 | AddInitializerToStaticVarDecl(const VarDecl &D, |
| 2607 | llvm::GlobalVariable *GV); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2608 | |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 2609 | |
Anders Carlsson | 3b2e16b | 2009-08-08 21:45:14 +0000 | [diff] [blame] | 2610 | /// EmitCXXGlobalVarDeclInit - Create the initializer for a C++ |
| 2611 | /// variable with global storage. |
Richard Smith | 7ca4850 | 2012-02-13 22:16:19 +0000 | [diff] [blame] | 2612 | void EmitCXXGlobalVarDeclInit(const VarDecl &D, llvm::Constant *DeclPtr, |
| 2613 | bool PerformInit); |
Anders Carlsson | 3b2e16b | 2009-08-08 21:45:14 +0000 | [diff] [blame] | 2614 | |
John McCall | 20bb175 | 2012-05-01 06:13:13 +0000 | [diff] [blame] | 2615 | /// Call atexit() with a function that passes the given argument to |
| 2616 | /// the given function. |
| 2617 | void registerGlobalDtorWithAtExit(llvm::Constant *fn, llvm::Constant *addr); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2618 | |
John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 2619 | /// Emit code in this function to perform a guarded variable |
| 2620 | /// initialization. Guarded initializations are used when it's not |
| 2621 | /// possible to prove that an initialization will be done exactly |
| 2622 | /// once, e.g. with a static local variable or a static data member |
| 2623 | /// of a class template. |
Chandler Carruth | 0f30a12 | 2012-03-30 19:44:53 +0000 | [diff] [blame] | 2624 | void EmitCXXGuardedInit(const VarDecl &D, llvm::GlobalVariable *DeclPtr, |
Richard Smith | 7ca4850 | 2012-02-13 22:16:19 +0000 | [diff] [blame] | 2625 | bool PerformInit); |
John McCall | 5cd91b5 | 2010-09-08 01:44:27 +0000 | [diff] [blame] | 2626 | |
Daniel Dunbar | efb0fa9 | 2010-03-20 04:15:41 +0000 | [diff] [blame] | 2627 | /// GenerateCXXGlobalInitFunc - Generates code for initializing global |
| 2628 | /// variables. |
| 2629 | void GenerateCXXGlobalInitFunc(llvm::Function *Fn, |
| 2630 | llvm::Constant **Decls, |
Richard Smith | b80a16e | 2013-04-19 16:42:07 +0000 | [diff] [blame^] | 2631 | unsigned NumDecls, |
| 2632 | llvm::GlobalVariable *Guard = 0); |
Daniel Dunbar | efb0fa9 | 2010-03-20 04:15:41 +0000 | [diff] [blame] | 2633 | |
John McCall | 3f88f68 | 2012-04-06 18:21:03 +0000 | [diff] [blame] | 2634 | /// GenerateCXXGlobalDtorsFunc - Generates code for destroying global |
Daniel Dunbar | efb0fa9 | 2010-03-20 04:15:41 +0000 | [diff] [blame] | 2635 | /// variables. |
John McCall | 3f88f68 | 2012-04-06 18:21:03 +0000 | [diff] [blame] | 2636 | void GenerateCXXGlobalDtorsFunc(llvm::Function *Fn, |
| 2637 | const std::vector<std::pair<llvm::WeakVH, |
| 2638 | llvm::Constant*> > &DtorsAndObjects); |
Daniel Dunbar | efb0fa9 | 2010-03-20 04:15:41 +0000 | [diff] [blame] | 2639 | |
John McCall | d26bc76 | 2011-03-09 04:27:21 +0000 | [diff] [blame] | 2640 | void GenerateCXXGlobalVarDeclInitFunc(llvm::Function *Fn, |
| 2641 | const VarDecl *D, |
Richard Smith | 7ca4850 | 2012-02-13 22:16:19 +0000 | [diff] [blame] | 2642 | llvm::GlobalVariable *Addr, |
| 2643 | bool PerformInit); |
Daniel Dunbar | efb0fa9 | 2010-03-20 04:15:41 +0000 | [diff] [blame] | 2644 | |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 2645 | void EmitCXXConstructExpr(const CXXConstructExpr *E, AggValueSlot Dest); |
Fariborz Jahanian | 3499987 | 2010-11-13 21:53:34 +0000 | [diff] [blame] | 2646 | |
| 2647 | void EmitSynthesizedCXXCopyCtor(llvm::Value *Dest, llvm::Value *Src, |
Fariborz Jahanian | 830937b | 2010-12-02 17:02:11 +0000 | [diff] [blame] | 2648 | const Expr *Exp); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2649 | |
John McCall | 1a343eb | 2011-11-10 08:15:53 +0000 | [diff] [blame] | 2650 | void enterFullExpression(const ExprWithCleanups *E) { |
| 2651 | if (E->getNumObjects() == 0) return; |
| 2652 | enterNonTrivialFullExpression(E); |
| 2653 | } |
| 2654 | void enterNonTrivialFullExpression(const ExprWithCleanups *E); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2655 | |
Anders Carlsson | 756b5c4 | 2009-10-30 01:42:31 +0000 | [diff] [blame] | 2656 | void EmitCXXThrowExpr(const CXXThrowExpr *E); |
Douglas Gregor | 1eb2e59 | 2010-05-16 00:44:00 +0000 | [diff] [blame] | 2657 | |
Eli Friedman | 4c5d8af | 2012-02-09 03:32:31 +0000 | [diff] [blame] | 2658 | void EmitLambdaExpr(const LambdaExpr *E, AggValueSlot Dest); |
| 2659 | |
Eli Friedman | 276b061 | 2011-10-11 02:20:01 +0000 | [diff] [blame] | 2660 | RValue EmitAtomicExpr(AtomicExpr *E, llvm::Value *Dest = 0); |
| 2661 | |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 2662 | //===--------------------------------------------------------------------===// |
Julien Lerouge | 77f68bb | 2011-09-09 22:41:49 +0000 | [diff] [blame] | 2663 | // Annotations Emission |
| 2664 | //===--------------------------------------------------------------------===// |
| 2665 | |
| 2666 | /// Emit an annotation call (intrinsic or builtin). |
| 2667 | llvm::Value *EmitAnnotationCall(llvm::Value *AnnotationFn, |
| 2668 | llvm::Value *AnnotatedVal, |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 2669 | StringRef AnnotationStr, |
Julien Lerouge | 77f68bb | 2011-09-09 22:41:49 +0000 | [diff] [blame] | 2670 | SourceLocation Location); |
| 2671 | |
| 2672 | /// Emit local annotations for the local variable V, declared by D. |
| 2673 | void EmitVarAnnotations(const VarDecl *D, llvm::Value *V); |
| 2674 | |
| 2675 | /// Emit field annotations for the given field & value. Returns the |
| 2676 | /// annotation result. |
| 2677 | llvm::Value *EmitFieldAnnotations(const FieldDecl *D, llvm::Value *V); |
| 2678 | |
| 2679 | //===--------------------------------------------------------------------===// |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 2680 | // Internal Helpers |
| 2681 | //===--------------------------------------------------------------------===// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2682 | |
Chris Lattner | 0946ccd | 2008-11-11 07:41:27 +0000 | [diff] [blame] | 2683 | /// ContainsLabel - Return true if the statement contains a label in it. If |
| 2684 | /// this statement is not executed normally, it not containing a label means |
| 2685 | /// that we can just remove the code. |
| 2686 | static bool ContainsLabel(const Stmt *S, bool IgnoreCaseStmts = false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2687 | |
Chris Lattner | ef425a6 | 2011-02-28 00:18:40 +0000 | [diff] [blame] | 2688 | /// containsBreak - Return true if the statement contains a break out of it. |
| 2689 | /// If the statement (recursively) contains a switch or loop with a break |
| 2690 | /// inside of it, this is fine. |
| 2691 | static bool containsBreak(const Stmt *S); |
| 2692 | |
Daniel Dunbar | 4bc0455 | 2008-11-12 10:12:14 +0000 | [diff] [blame] | 2693 | /// ConstantFoldsToSimpleInteger - If the specified expression does not fold |
Chris Lattner | c2c9001 | 2011-02-27 23:02:32 +0000 | [diff] [blame] | 2694 | /// to a constant, or if it does but contains a label, return false. If it |
| 2695 | /// constant folds return true and set the boolean result in Result. |
| 2696 | bool ConstantFoldsToSimpleInteger(const Expr *Cond, bool &Result); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2697 | |
Chris Lattner | ef425a6 | 2011-02-28 00:18:40 +0000 | [diff] [blame] | 2698 | /// ConstantFoldsToSimpleInteger - If the specified expression does not fold |
| 2699 | /// to a constant, or if it does but contains a label, return false. If it |
| 2700 | /// constant folds return true and set the folded value. |
Richard Trieu | e1ecdc1 | 2012-07-23 20:21:35 +0000 | [diff] [blame] | 2701 | bool ConstantFoldsToSimpleInteger(const Expr *Cond, llvm::APSInt &Result); |
Chris Lattner | ef425a6 | 2011-02-28 00:18:40 +0000 | [diff] [blame] | 2702 | |
Chris Lattner | 31a0984 | 2008-11-12 08:04:58 +0000 | [diff] [blame] | 2703 | /// EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g. for an |
| 2704 | /// if statement) to the specified blocks. Based on the condition, this might |
| 2705 | /// try to simplify the codegen of the conditional based on the branch. |
Chris Lattner | 9bc47e2 | 2008-11-12 07:46:33 +0000 | [diff] [blame] | 2706 | void EmitBranchOnBoolExpr(const Expr *Cond, llvm::BasicBlock *TrueBlock, |
Daniel Dunbar | 4bc0455 | 2008-11-12 10:12:14 +0000 | [diff] [blame] | 2707 | llvm::BasicBlock *FalseBlock); |
Mike Stump | be07f60 | 2009-12-14 21:58:14 +0000 | [diff] [blame] | 2708 | |
Richard Smith | 4def70d | 2012-10-09 19:52:38 +0000 | [diff] [blame] | 2709 | /// \brief Emit a description of a type in a format suitable for passing to |
| 2710 | /// a runtime sanitizer handler. |
| 2711 | llvm::Constant *EmitCheckTypeDescriptor(QualType T); |
| 2712 | |
| 2713 | /// \brief Convert a value into a format suitable for passing to a runtime |
| 2714 | /// sanitizer handler. |
| 2715 | llvm::Value *EmitCheckValue(llvm::Value *V); |
| 2716 | |
| 2717 | /// \brief Emit a description of a source location in a format suitable for |
| 2718 | /// passing to a runtime sanitizer handler. |
| 2719 | llvm::Constant *EmitCheckSourceLocation(SourceLocation Loc); |
| 2720 | |
Will Dietz | ad95481 | 2012-12-02 19:50:33 +0000 | [diff] [blame] | 2721 | /// \brief Specify under what conditions this check can be recovered |
| 2722 | enum CheckRecoverableKind { |
| 2723 | /// Always terminate program execution if this check fails |
| 2724 | CRK_Unrecoverable, |
| 2725 | /// Check supports recovering, allows user to specify which |
| 2726 | CRK_Recoverable, |
| 2727 | /// Runtime conditionally aborts, always need to support recovery. |
| 2728 | CRK_AlwaysRecoverable |
| 2729 | }; |
| 2730 | |
Richard Smith | cc30561 | 2012-11-01 22:15:34 +0000 | [diff] [blame] | 2731 | /// \brief Create a basic block that will call a handler function in a |
| 2732 | /// sanitizer runtime with the provided arguments, and create a conditional |
| 2733 | /// branch to it. |
Richard Smith | 4def70d | 2012-10-09 19:52:38 +0000 | [diff] [blame] | 2734 | void EmitCheck(llvm::Value *Checked, StringRef CheckName, |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 2735 | ArrayRef<llvm::Constant *> StaticArgs, |
| 2736 | ArrayRef<llvm::Value *> DynamicArgs, |
Will Dietz | ad95481 | 2012-12-02 19:50:33 +0000 | [diff] [blame] | 2737 | CheckRecoverableKind Recoverable); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2738 | |
Richard Smith | cc30561 | 2012-11-01 22:15:34 +0000 | [diff] [blame] | 2739 | /// \brief Create a basic block that will call the trap intrinsic, and emit a |
| 2740 | /// conditional branch to it, for the -ftrapv checks. |
Chad Rosier | 78d85b1 | 2013-01-29 23:31:22 +0000 | [diff] [blame] | 2741 | void EmitTrapCheck(llvm::Value *Checked); |
Richard Smith | cc30561 | 2012-11-01 22:15:34 +0000 | [diff] [blame] | 2742 | |
Anders Carlsson | 21c9ad9 | 2010-03-30 03:27:09 +0000 | [diff] [blame] | 2743 | /// EmitCallArg - Emit a single call argument. |
John McCall | 413ebdb | 2011-03-11 20:59:21 +0000 | [diff] [blame] | 2744 | void EmitCallArg(CallArgList &args, const Expr *E, QualType ArgType); |
Anders Carlsson | 21c9ad9 | 2010-03-30 03:27:09 +0000 | [diff] [blame] | 2745 | |
John McCall | 2736071 | 2010-05-26 22:34:26 +0000 | [diff] [blame] | 2746 | /// EmitDelegateCallArg - We are performing a delegate call; that |
| 2747 | /// is, the current function is delegating to another one. Produce |
| 2748 | /// a r-value suitable for passing the given parameter. |
John McCall | 413ebdb | 2011-03-11 20:59:21 +0000 | [diff] [blame] | 2749 | void EmitDelegateCallArg(CallArgList &args, const VarDecl *param); |
John McCall | 2736071 | 2010-05-26 22:34:26 +0000 | [diff] [blame] | 2750 | |
Peter Collingbourne | c5096cb | 2011-10-27 19:19:51 +0000 | [diff] [blame] | 2751 | /// SetFPAccuracy - Set the minimum required accuracy of the given floating |
| 2752 | /// point operation, expressed as the maximum relative error in ulp. |
Duncan Sands | 8250016 | 2012-04-10 08:23:07 +0000 | [diff] [blame] | 2753 | void SetFPAccuracy(llvm::Value *Val, float Accuracy); |
Peter Collingbourne | c5096cb | 2011-10-27 19:19:51 +0000 | [diff] [blame] | 2754 | |
Chris Lattner | 31a0984 | 2008-11-12 08:04:58 +0000 | [diff] [blame] | 2755 | private: |
Rafael Espindola | c3f8955 | 2012-03-24 16:50:34 +0000 | [diff] [blame] | 2756 | llvm::MDNode *getRangeForLoadFromType(QualType Ty); |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 2757 | void EmitReturnOfRValue(RValue RV, QualType Ty); |
| 2758 | |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 2759 | /// ExpandTypeFromArgs - Reconstruct a structure of type \arg Ty |
| 2760 | /// from function arguments into \arg Dst. See ABIArgInfo::Expand. |
| 2761 | /// |
| 2762 | /// \param AI - The first function argument of the expansion. |
| 2763 | /// \return The argument following the last expanded function |
| 2764 | /// argument. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2765 | llvm::Function::arg_iterator |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 2766 | ExpandTypeFromArgs(QualType Ty, LValue Dst, |
| 2767 | llvm::Function::arg_iterator AI); |
| 2768 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2769 | /// ExpandTypeToArgs - Expand an RValue \arg Src, with the LLVM type for \arg |
| 2770 | /// Ty, into individual arguments on the provided vector \arg Args. See |
| 2771 | /// ABIArgInfo::Expand. |
| 2772 | void ExpandTypeToArgs(QualType Ty, RValue Src, |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 2773 | SmallVector<llvm::Value*, 16> &Args, |
Chris Lattner | 811bf36 | 2011-07-12 06:29:11 +0000 | [diff] [blame] | 2774 | llvm::FunctionType *IRFuncTy); |
Anders Carlsson | c8c7b18 | 2009-01-11 19:40:10 +0000 | [diff] [blame] | 2775 | |
Chad Rosier | 42b6055 | 2012-08-23 20:00:18 +0000 | [diff] [blame] | 2776 | llvm::Value* EmitAsmInput(const TargetInfo::ConstraintInfo &Info, |
Anders Carlsson | c8c7b18 | 2009-01-11 19:40:10 +0000 | [diff] [blame] | 2777 | const Expr *InputExpr, std::string &ConstraintStr); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2778 | |
Chad Rosier | 42b6055 | 2012-08-23 20:00:18 +0000 | [diff] [blame] | 2779 | llvm::Value* EmitAsmInputLValue(const TargetInfo::ConstraintInfo &Info, |
Eli Friedman | 6d7cfd7 | 2010-07-16 00:55:21 +0000 | [diff] [blame] | 2780 | LValue InputValue, QualType InputType, |
| 2781 | std::string &ConstraintStr); |
| 2782 | |
Anders Carlsson | 0139bb9 | 2009-04-08 20:47:54 +0000 | [diff] [blame] | 2783 | /// EmitCallArgs - Emit call arguments for a function. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2784 | /// The CallArgTypeInfo parameter is used for iterating over the known |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2785 | /// argument types of the function being called. |
| 2786 | template<typename T> |
| 2787 | void EmitCallArgs(CallArgList& Args, const T* CallArgTypeInfo, |
Anders Carlsson | 0139bb9 | 2009-04-08 20:47:54 +0000 | [diff] [blame] | 2788 | CallExpr::const_arg_iterator ArgBeg, |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2789 | CallExpr::const_arg_iterator ArgEnd) { |
| 2790 | CallExpr::const_arg_iterator Arg = ArgBeg; |
Anders Carlsson | 0139bb9 | 2009-04-08 20:47:54 +0000 | [diff] [blame] | 2791 | |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2792 | // First, use the argument types that the type info knows about |
| 2793 | if (CallArgTypeInfo) { |
| 2794 | for (typename T::arg_type_iterator I = CallArgTypeInfo->arg_type_begin(), |
| 2795 | E = CallArgTypeInfo->arg_type_end(); I != E; ++I, ++Arg) { |
Eli Friedman | 44b0a3e | 2009-11-18 03:42:04 +0000 | [diff] [blame] | 2796 | assert(Arg != ArgEnd && "Running over edge of argument list!"); |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2797 | QualType ArgType = *I; |
Fariborz Jahanian | 745da3a | 2010-09-24 17:30:16 +0000 | [diff] [blame] | 2798 | #ifndef NDEBUG |
| 2799 | QualType ActualArgType = Arg->getType(); |
| 2800 | if (ArgType->isPointerType() && ActualArgType->isPointerType()) { |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2801 | QualType ActualBaseType = |
Fariborz Jahanian | 745da3a | 2010-09-24 17:30:16 +0000 | [diff] [blame] | 2802 | ActualArgType->getAs<PointerType>()->getPointeeType(); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2803 | QualType ArgBaseType = |
Fariborz Jahanian | 745da3a | 2010-09-24 17:30:16 +0000 | [diff] [blame] | 2804 | ArgType->getAs<PointerType>()->getPointeeType(); |
| 2805 | if (ArgBaseType->isVariableArrayType()) { |
| 2806 | if (const VariableArrayType *VAT = |
| 2807 | getContext().getAsVariableArrayType(ActualBaseType)) { |
| 2808 | if (!VAT->getSizeExpr()) |
| 2809 | ActualArgType = ArgType; |
| 2810 | } |
| 2811 | } |
| 2812 | } |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2813 | assert(getContext().getCanonicalType(ArgType.getNonReferenceType()). |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2814 | getTypePtr() == |
Fariborz Jahanian | 745da3a | 2010-09-24 17:30:16 +0000 | [diff] [blame] | 2815 | getContext().getCanonicalType(ActualArgType).getTypePtr() && |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2816 | "type mismatch in call argument!"); |
Fariborz Jahanian | 745da3a | 2010-09-24 17:30:16 +0000 | [diff] [blame] | 2817 | #endif |
John McCall | 413ebdb | 2011-03-11 20:59:21 +0000 | [diff] [blame] | 2818 | EmitCallArg(Args, *Arg, ArgType); |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2819 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2820 | |
| 2821 | // 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] | 2822 | // variadic function. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2823 | assert((Arg == ArgEnd || CallArgTypeInfo->isVariadic()) && |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2824 | "Extra arguments in non-variadic function!"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2825 | |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2826 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2827 | |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2828 | // 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] | 2829 | for (; Arg != ArgEnd; ++Arg) |
| 2830 | EmitCallArg(Args, *Arg, Arg->getType()); |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2831 | } |
John McCall | 492c4f9 | 2010-03-03 04:15:11 +0000 | [diff] [blame] | 2832 | |
| 2833 | const TargetCodeGenInfo &getTargetHooks() const { |
| 2834 | return CGM.getTargetCodeGenInfo(); |
| 2835 | } |
John McCall | 744016d | 2010-07-06 23:57:41 +0000 | [diff] [blame] | 2836 | |
| 2837 | void EmitDeclMetadata(); |
John McCall | f0c11f7 | 2011-03-31 08:03:29 +0000 | [diff] [blame] | 2838 | |
| 2839 | CodeGenModule::ByrefHelpers * |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 2840 | buildByrefHelpers(llvm::StructType &byrefType, |
John McCall | f0c11f7 | 2011-03-31 08:03:29 +0000 | [diff] [blame] | 2841 | const AutoVarEmission &emission); |
Dan Gohman | b49bd27 | 2012-02-16 00:57:37 +0000 | [diff] [blame] | 2842 | |
| 2843 | void AddObjCARCExceptionMetadata(llvm::Instruction *Inst); |
Jay Foad | f4c3db1 | 2012-03-02 18:34:30 +0000 | [diff] [blame] | 2844 | |
Eli Friedman | ea93e40 | 2012-08-23 03:10:17 +0000 | [diff] [blame] | 2845 | /// GetPointeeAlignment - Given an expression with a pointer type, emit the |
| 2846 | /// value and compute our best estimate of the alignment of the pointee. |
| 2847 | std::pair<llvm::Value*, unsigned> EmitPointerWithAlignment(const Expr *Addr); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2848 | }; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2849 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 2850 | /// Helper class with most of the code for saving a value for a |
| 2851 | /// conditional expression cleanup. |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 2852 | struct DominatingLLVMValue { |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 2853 | typedef llvm::PointerIntPair<llvm::Value*, 1, bool> saved_type; |
| 2854 | |
| 2855 | /// Answer whether the given value needs extra work to be saved. |
| 2856 | static bool needsSaving(llvm::Value *value) { |
| 2857 | // If it's not an instruction, we don't need to save. |
| 2858 | if (!isa<llvm::Instruction>(value)) return false; |
| 2859 | |
| 2860 | // If it's an instruction in the entry block, we don't need to save. |
| 2861 | llvm::BasicBlock *block = cast<llvm::Instruction>(value)->getParent(); |
| 2862 | return (block != &block->getParent()->getEntryBlock()); |
| 2863 | } |
| 2864 | |
| 2865 | /// Try to save the given value. |
| 2866 | static saved_type save(CodeGenFunction &CGF, llvm::Value *value) { |
| 2867 | if (!needsSaving(value)) return saved_type(value, false); |
| 2868 | |
| 2869 | // Otherwise we need an alloca. |
| 2870 | llvm::Value *alloca = |
| 2871 | CGF.CreateTempAlloca(value->getType(), "cond-cleanup.save"); |
| 2872 | CGF.Builder.CreateStore(value, alloca); |
| 2873 | |
| 2874 | return saved_type(alloca, true); |
| 2875 | } |
| 2876 | |
| 2877 | static llvm::Value *restore(CodeGenFunction &CGF, saved_type value) { |
| 2878 | if (!value.getInt()) return value.getPointer(); |
| 2879 | return CGF.Builder.CreateLoad(value.getPointer()); |
| 2880 | } |
| 2881 | }; |
| 2882 | |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 2883 | /// A partial specialization of DominatingValue for llvm::Values that |
| 2884 | /// might be llvm::Instructions. |
| 2885 | template <class T> struct DominatingPointer<T,true> : DominatingLLVMValue { |
| 2886 | typedef T *type; |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 2887 | static type restore(CodeGenFunction &CGF, saved_type value) { |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 2888 | return static_cast<T*>(DominatingLLVMValue::restore(CGF, value)); |
| 2889 | } |
| 2890 | }; |
| 2891 | |
| 2892 | /// A specialization of DominatingValue for RValue. |
| 2893 | template <> struct DominatingValue<RValue> { |
| 2894 | typedef RValue type; |
| 2895 | class saved_type { |
| 2896 | enum Kind { ScalarLiteral, ScalarAddress, AggregateLiteral, |
| 2897 | AggregateAddress, ComplexAddress }; |
| 2898 | |
| 2899 | llvm::Value *Value; |
| 2900 | Kind K; |
| 2901 | saved_type(llvm::Value *v, Kind k) : Value(v), K(k) {} |
| 2902 | |
| 2903 | public: |
| 2904 | static bool needsSaving(RValue value); |
| 2905 | static saved_type save(CodeGenFunction &CGF, RValue value); |
| 2906 | RValue restore(CodeGenFunction &CGF); |
| 2907 | |
| 2908 | // implementations in CGExprCXX.cpp |
| 2909 | }; |
| 2910 | |
| 2911 | static bool needsSaving(type value) { |
| 2912 | return saved_type::needsSaving(value); |
| 2913 | } |
| 2914 | static saved_type save(CodeGenFunction &CGF, type value) { |
| 2915 | return saved_type::save(CGF, value); |
| 2916 | } |
| 2917 | static type restore(CodeGenFunction &CGF, saved_type value) { |
| 2918 | return value.restore(CGF); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 2919 | } |
| 2920 | }; |
| 2921 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2922 | } // end namespace CodeGen |
| 2923 | } // end namespace clang |
Fariborz Jahanian | 4e1524b | 2012-01-29 20:27:13 +0000 | [diff] [blame] | 2924 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2925 | #endif |