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" |
Reid Kleckner | 43a75fc | 2013-06-19 17:07:50 +0000 | [diff] [blame] | 20 | #include "EHScopeStack.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 21 | #include "CodeGenModule.h" |
| 22 | #include "clang/AST/CharUnits.h" |
| 23 | #include "clang/AST/ExprCXX.h" |
| 24 | #include "clang/AST/ExprObjC.h" |
| 25 | #include "clang/AST/Type.h" |
| 26 | #include "clang/Basic/ABI.h" |
Ben Langmuir | 524387a | 2013-05-09 19:17:11 +0000 | [diff] [blame] | 27 | #include "clang/Basic/CapturedStmt.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 28 | #include "clang/Basic/TargetInfo.h" |
| 29 | #include "clang/Frontend/CodeGenOptions.h" |
| 30 | #include "llvm/ADT/ArrayRef.h" |
| 31 | #include "llvm/ADT/DenseMap.h" |
| 32 | #include "llvm/ADT/SmallVector.h" |
| 33 | #include "llvm/Support/Debug.h" |
| 34 | #include "llvm/Support/ValueHandle.h" |
Daniel Dunbar | 8f2926b | 2008-08-23 03:46:30 +0000 | [diff] [blame] | 35 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 36 | namespace llvm { |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 37 | class BasicBlock; |
Benjamin Kramer | f21efe9 | 2009-08-11 17:46:57 +0000 | [diff] [blame] | 38 | class LLVMContext; |
David Chisnall | dd5c98f | 2010-05-01 11:15:56 +0000 | [diff] [blame] | 39 | class MDNode; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 40 | class Module; |
Daniel Dunbar | 898d508 | 2008-09-30 01:06:03 +0000 | [diff] [blame] | 41 | class SwitchInst; |
Daniel Dunbar | 259e9cc | 2009-10-19 01:21:05 +0000 | [diff] [blame] | 42 | class Twine; |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 43 | class Value; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 44 | class CallSite; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 45 | } |
| 46 | |
| 47 | namespace clang { |
| 48 | class ASTContext; |
John McCall | 1a343eb | 2011-11-10 08:15:53 +0000 | [diff] [blame] | 49 | class BlockDecl; |
Anders Carlsson | 7267c16 | 2009-05-29 21:03:38 +0000 | [diff] [blame] | 50 | class CXXDestructorDecl; |
Richard Smith | ad762fc | 2011-04-14 22:09:26 +0000 | [diff] [blame] | 51 | class CXXForRangeStmt; |
Anders Carlsson | 6815e94 | 2009-09-27 18:58:34 +0000 | [diff] [blame] | 52 | class CXXTryStmt; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 53 | class Decl; |
Chris Lattner | ad8dcf4 | 2011-02-17 07:39:24 +0000 | [diff] [blame] | 54 | class LabelDecl; |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 55 | class EnumConstantDecl; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 56 | class FunctionDecl; |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 57 | class FunctionProtoType; |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 58 | class LabelStmt; |
Fariborz Jahanian | 679a502 | 2009-01-10 21:06:09 +0000 | [diff] [blame] | 59 | class ObjCContainerDecl; |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 60 | class ObjCInterfaceDecl; |
| 61 | class ObjCIvarDecl; |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 62 | class ObjCMethodDecl; |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 63 | class ObjCImplementationDecl; |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 64 | class ObjCPropertyImplDecl; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 65 | class TargetInfo; |
John McCall | 492c4f9 | 2010-03-03 04:15:11 +0000 | [diff] [blame] | 66 | class TargetCodeGenInfo; |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 67 | class VarDecl; |
Chris Lattner | 16f0049 | 2009-04-26 01:32:48 +0000 | [diff] [blame] | 68 | class ObjCForCollectionStmt; |
| 69 | class ObjCAtTryStmt; |
| 70 | class ObjCAtThrowStmt; |
| 71 | class ObjCAtSynchronizedStmt; |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 72 | class ObjCAutoreleasePoolStmt; |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 73 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 74 | namespace CodeGen { |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 75 | class CodeGenTypes; |
Daniel Dunbar | bb36d33 | 2009-02-02 21:43:58 +0000 | [diff] [blame] | 76 | class CGFunctionInfo; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 77 | class CGRecordLayout; |
John McCall | ee50429 | 2010-05-21 04:11:14 +0000 | [diff] [blame] | 78 | class CGBlockInfo; |
John McCall | 4c40d98 | 2010-08-31 07:33:07 +0000 | [diff] [blame] | 79 | class CGCXXABI; |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 80 | class BlockFlags; |
| 81 | class BlockFieldFlags; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 82 | |
John McCall | 9d232c8 | 2013-03-07 21:37:08 +0000 | [diff] [blame] | 83 | /// The kind of evaluation to perform on values of a particular |
| 84 | /// type. Basically, is the code in CGExprScalar, CGExprComplex, or |
| 85 | /// CGExprAgg? |
| 86 | /// |
| 87 | /// TODO: should vectors maybe be split out into their own thing? |
| 88 | enum TypeEvaluationKind { |
| 89 | TEK_Scalar, |
| 90 | TEK_Complex, |
| 91 | TEK_Aggregate |
| 92 | }; |
| 93 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 94 | /// CodeGenFunction - This class organizes the per-function state that is used |
| 95 | /// while generating LLVM code. |
John McCall | 5936e33 | 2011-02-15 09:22:45 +0000 | [diff] [blame] | 96 | class CodeGenFunction : public CodeGenTypeCache { |
Dmitri Gribenko | f56faa0 | 2012-09-15 20:20:27 +0000 | [diff] [blame] | 97 | CodeGenFunction(const CodeGenFunction &) LLVM_DELETED_FUNCTION; |
| 98 | void operator=(const CodeGenFunction &) LLVM_DELETED_FUNCTION; |
John McCall | 4c40d98 | 2010-08-31 07:33:07 +0000 | [diff] [blame] | 99 | |
| 100 | friend class CGCXXABI; |
Chris Lattner | bfc0c1a | 2007-08-26 23:13:56 +0000 | [diff] [blame] | 101 | public: |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 102 | /// A jump destination is an abstract label, branching to which may |
| 103 | /// require a jump out through normal cleanups. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 104 | struct JumpDest { |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 105 | JumpDest() : Block(0), ScopeDepth(), Index(0) {} |
| 106 | JumpDest(llvm::BasicBlock *Block, |
| 107 | EHScopeStack::stable_iterator Depth, |
| 108 | unsigned Index) |
| 109 | : Block(Block), ScopeDepth(Depth), Index(Index) {} |
| 110 | |
| 111 | bool isValid() const { return Block != 0; } |
| 112 | llvm::BasicBlock *getBlock() const { return Block; } |
| 113 | EHScopeStack::stable_iterator getScopeDepth() const { return ScopeDepth; } |
| 114 | unsigned getDestIndex() const { return Index; } |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 115 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 116 | // This should be used cautiously. |
| 117 | void setScopeDepth(EHScopeStack::stable_iterator depth) { |
| 118 | ScopeDepth = depth; |
| 119 | } |
| 120 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 121 | private: |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 122 | llvm::BasicBlock *Block; |
| 123 | EHScopeStack::stable_iterator ScopeDepth; |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 124 | unsigned Index; |
| 125 | }; |
| 126 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 127 | CodeGenModule &CGM; // Per-module state. |
Daniel Dunbar | 444be73 | 2009-11-13 05:51:54 +0000 | [diff] [blame] | 128 | const TargetInfo &Target; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 129 | |
Chris Lattner | 58dee10 | 2007-08-21 16:57:55 +0000 | [diff] [blame] | 130 | typedef std::pair<llvm::Value *, llvm::Value *> ComplexPairTy; |
Daniel Dunbar | 45d196b | 2008-11-01 01:53:16 +0000 | [diff] [blame] | 131 | CGBuilderTy Builder; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 132 | |
John McCall | f5ebf9b | 2013-05-03 07:33:41 +0000 | [diff] [blame] | 133 | /// CurFuncDecl - Holds the Decl for the current outermost |
| 134 | /// non-closure context. |
Chris Lattner | 4111024 | 2008-06-17 18:05:57 +0000 | [diff] [blame] | 135 | const Decl *CurFuncDecl; |
Chris Lattner | b5437d2 | 2009-04-23 05:30:27 +0000 | [diff] [blame] | 136 | /// CurCodeDecl - This is the inner-most code context, which includes blocks. |
| 137 | const Decl *CurCodeDecl; |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 138 | const CGFunctionInfo *CurFnInfo; |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 139 | QualType FnRetTy; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 140 | llvm::Function *CurFn; |
| 141 | |
Mike Stump | 6a1e0eb | 2009-12-04 23:26:17 +0000 | [diff] [blame] | 142 | /// CurGD - The GlobalDecl for the current function being compiled. |
| 143 | GlobalDecl CurGD; |
Mike Stump | 6a1e0eb | 2009-12-04 23:26:17 +0000 | [diff] [blame] | 144 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 145 | /// PrologueCleanupDepth - The cleanup depth enclosing all the |
| 146 | /// cleanups associated with the parameters. |
| 147 | EHScopeStack::stable_iterator PrologueCleanupDepth; |
| 148 | |
Daniel Dunbar | 5ca2084 | 2008-09-09 21:00:17 +0000 | [diff] [blame] | 149 | /// ReturnBlock - Unified return block. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 150 | JumpDest ReturnBlock; |
| 151 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 152 | /// ReturnValue - The temporary alloca to hold the return value. This is null |
Sylvestre Ledru | f3477c1 | 2012-09-27 10:16:10 +0000 | [diff] [blame] | 153 | /// iff the function has no return value. |
Eli Friedman | b17daf9 | 2009-12-04 02:43:40 +0000 | [diff] [blame] | 154 | llvm::Value *ReturnValue; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 155 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 156 | /// AllocaInsertPoint - This is an instruction in the entry block before which |
| 157 | /// we prefer to insert allocas. |
Chris Lattner | 481769b | 2009-03-31 22:17:44 +0000 | [diff] [blame] | 158 | llvm::AssertingVH<llvm::Instruction> AllocaInsertPt; |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 159 | |
Ben Langmuir | 524387a | 2013-05-09 19:17:11 +0000 | [diff] [blame] | 160 | /// \brief API for captured statement code generation. |
| 161 | class CGCapturedStmtInfo { |
| 162 | public: |
| 163 | explicit CGCapturedStmtInfo(const CapturedStmt &S, |
| 164 | CapturedRegionKind K = CR_Default) |
| 165 | : Kind(K), ThisValue(0), CXXThisFieldDecl(0) { |
| 166 | |
| 167 | RecordDecl::field_iterator Field = |
| 168 | S.getCapturedRecordDecl()->field_begin(); |
| 169 | for (CapturedStmt::const_capture_iterator I = S.capture_begin(), |
| 170 | E = S.capture_end(); |
| 171 | I != E; ++I, ++Field) { |
| 172 | if (I->capturesThis()) |
| 173 | CXXThisFieldDecl = *Field; |
| 174 | else |
| 175 | CaptureFields[I->getCapturedVar()] = *Field; |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | virtual ~CGCapturedStmtInfo(); |
| 180 | |
| 181 | CapturedRegionKind getKind() const { return Kind; } |
| 182 | |
| 183 | void setContextValue(llvm::Value *V) { ThisValue = V; } |
| 184 | // \brief Retrieve the value of the context parameter. |
| 185 | llvm::Value *getContextValue() const { return ThisValue; } |
| 186 | |
| 187 | /// \brief Lookup the captured field decl for a variable. |
| 188 | const FieldDecl *lookup(const VarDecl *VD) const { |
| 189 | return CaptureFields.lookup(VD); |
| 190 | } |
| 191 | |
| 192 | bool isCXXThisExprCaptured() const { return CXXThisFieldDecl != 0; } |
| 193 | FieldDecl *getThisFieldDecl() const { return CXXThisFieldDecl; } |
| 194 | |
| 195 | /// \brief Emit the captured statement body. |
| 196 | virtual void EmitBody(CodeGenFunction &CGF, Stmt *S) { |
| 197 | CGF.EmitStmt(S); |
| 198 | } |
| 199 | |
| 200 | /// \brief Get the name of the capture helper. |
| 201 | virtual StringRef getHelperName() const { return "__captured_stmt"; } |
| 202 | |
| 203 | private: |
| 204 | /// \brief The kind of captured statement being generated. |
| 205 | CapturedRegionKind Kind; |
| 206 | |
| 207 | /// \brief Keep the map between VarDecl and FieldDecl. |
| 208 | llvm::SmallDenseMap<const VarDecl *, FieldDecl *> CaptureFields; |
| 209 | |
| 210 | /// \brief The base address of the captured record, passed in as the first |
| 211 | /// argument of the parallel region function. |
| 212 | llvm::Value *ThisValue; |
| 213 | |
| 214 | /// \brief Captured 'this' type. |
| 215 | FieldDecl *CXXThisFieldDecl; |
| 216 | }; |
| 217 | CGCapturedStmtInfo *CapturedStmtInfo; |
| 218 | |
Nuno Lopes | b3198a8 | 2012-05-08 22:10:46 +0000 | [diff] [blame] | 219 | /// BoundsChecking - Emit run-time bounds checks. Higher values mean |
| 220 | /// potentially higher performance penalties. |
| 221 | unsigned char BoundsChecking; |
| 222 | |
Richard Smith | d6396a6 | 2012-11-05 22:21:05 +0000 | [diff] [blame] | 223 | /// \brief Whether any type-checking sanitizers are enabled. If \c false, |
| 224 | /// calls to EmitTypeCheck can be skipped. |
| 225 | bool SanitizePerformTypeCheck; |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 226 | |
Will Dietz | 4f45bc0 | 2013-01-18 11:30:38 +0000 | [diff] [blame] | 227 | /// \brief Sanitizer options to use for this function. |
| 228 | const SanitizerOptions *SanOpts; |
| 229 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 230 | /// In ARC, whether we should autorelease the return value. |
| 231 | bool AutoreleaseResult; |
| 232 | |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 233 | const CodeGen::CGBlockInfo *BlockInfo; |
| 234 | llvm::Value *BlockPointer; |
| 235 | |
Eli Friedman | cec5ebd | 2012-02-11 02:57:39 +0000 | [diff] [blame] | 236 | llvm::DenseMap<const VarDecl *, FieldDecl *> LambdaCaptureFields; |
| 237 | FieldDecl *LambdaThisCaptureField; |
| 238 | |
Douglas Gregor | 3d91bbc | 2010-05-17 15:52:46 +0000 | [diff] [blame] | 239 | /// \brief A mapping from NRVO variables to the flags used to indicate |
| 240 | /// when the NRVO has been applied to this variable. |
| 241 | llvm::DenseMap<const VarDecl *, llvm::Value *> NRVOFlags; |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 242 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 243 | EHScopeStack EHStack; |
Richard Smith | 8a07cd3 | 2013-06-12 20:42:33 +0000 | [diff] [blame] | 244 | llvm::SmallVector<char, 256> LifetimeExtendedCleanupStack; |
| 245 | |
| 246 | /// Header for data within LifetimeExtendedCleanupStack. |
| 247 | struct LifetimeExtendedCleanupHeader { |
| 248 | /// The size of the following cleanup object. |
| 249 | size_t Size : 29; |
| 250 | /// The kind of cleanup to push: a value from the CleanupKind enumeration. |
| 251 | unsigned Kind : 3; |
| 252 | |
| 253 | size_t getSize() const { return Size; } |
| 254 | CleanupKind getKind() const { return static_cast<CleanupKind>(Kind); } |
| 255 | }; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 256 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 257 | /// i32s containing the indexes of the cleanup destinations. |
| 258 | llvm::AllocaInst *NormalCleanupDest; |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 259 | |
| 260 | unsigned NextCleanupDestIndex; |
| 261 | |
John McCall | 1a343eb | 2011-11-10 08:15:53 +0000 | [diff] [blame] | 262 | /// FirstBlockInfo - The head of a singly-linked-list of block layouts. |
| 263 | CGBlockInfo *FirstBlockInfo; |
| 264 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 265 | /// EHResumeBlock - Unified block containing a call to llvm.eh.resume. |
| 266 | llvm::BasicBlock *EHResumeBlock; |
| 267 | |
Bill Wendling | 285cfd8 | 2011-09-19 20:31:14 +0000 | [diff] [blame] | 268 | /// The exception slot. All landing pads write the current exception pointer |
| 269 | /// into this alloca. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 270 | llvm::Value *ExceptionSlot; |
| 271 | |
Bill Wendling | 285cfd8 | 2011-09-19 20:31:14 +0000 | [diff] [blame] | 272 | /// The selector slot. Under the MandatoryCleanup model, all landing pads |
| 273 | /// write the current selector value into this alloca. |
John McCall | 93c332a | 2011-05-28 21:13:02 +0000 | [diff] [blame] | 274 | llvm::AllocaInst *EHSelectorSlot; |
| 275 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 276 | /// Emits a landing pad for the current EH stack. |
| 277 | llvm::BasicBlock *EmitLandingPad(); |
| 278 | |
| 279 | llvm::BasicBlock *getInvokeDestImpl(); |
| 280 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 281 | template <class T> |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 282 | typename DominatingValue<T>::saved_type saveValueInCond(T value) { |
| 283 | return DominatingValue<T>::save(*this, value); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 284 | } |
| 285 | |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 286 | public: |
Anders Carlsson | fa1f756 | 2009-02-10 06:07:49 +0000 | [diff] [blame] | 287 | /// ObjCEHValueStack - Stack of Objective-C exception values, used for |
| 288 | /// rethrows. |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 289 | SmallVector<llvm::Value*, 8> ObjCEHValueStack; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 290 | |
John McCall | d768e9d | 2011-06-22 02:32:12 +0000 | [diff] [blame] | 291 | /// A class controlling the emission of a finally block. |
| 292 | class FinallyInfo { |
| 293 | /// Where the catchall's edge through the cleanup should go. |
| 294 | JumpDest RethrowDest; |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 295 | |
John McCall | d768e9d | 2011-06-22 02:32:12 +0000 | [diff] [blame] | 296 | /// A function to call to enter the catch. |
| 297 | llvm::Constant *BeginCatchFn; |
| 298 | |
| 299 | /// An i1 variable indicating whether or not the @finally is |
| 300 | /// running for an exception. |
| 301 | llvm::AllocaInst *ForEHVar; |
| 302 | |
| 303 | /// An i8* variable into which the exception pointer to rethrow |
| 304 | /// has been saved. |
| 305 | llvm::AllocaInst *SavedExnVar; |
| 306 | |
| 307 | public: |
| 308 | void enter(CodeGenFunction &CGF, const Stmt *Finally, |
| 309 | llvm::Constant *beginCatchFn, llvm::Constant *endCatchFn, |
| 310 | llvm::Constant *rethrowFn); |
| 311 | void exit(CodeGenFunction &CGF); |
| 312 | }; |
Mike Stump | d88ea56 | 2009-12-09 03:35:49 +0000 | [diff] [blame] | 313 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 314 | /// pushFullExprCleanup - Push a cleanup to be run at the end of the |
| 315 | /// current full-expression. Safe against the possibility that |
| 316 | /// we're currently inside a conditionally-evaluated expression. |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 317 | template <class T, class A0> |
| 318 | void pushFullExprCleanup(CleanupKind kind, A0 a0) { |
| 319 | // If we're not in a conditional branch, or if none of the |
| 320 | // arguments requires saving, then use the unconditional cleanup. |
John McCall | c4a1a84 | 2011-07-12 00:15:30 +0000 | [diff] [blame] | 321 | if (!isInConditionalBranch()) |
| 322 | return EHStack.pushCleanup<T>(kind, a0); |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 323 | |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 324 | typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 325 | |
| 326 | typedef EHScopeStack::ConditionalCleanup1<T, A0> CleanupType; |
| 327 | EHStack.pushCleanup<CleanupType>(kind, a0_saved); |
| 328 | initFullExprCleanup(); |
| 329 | } |
| 330 | |
| 331 | /// pushFullExprCleanup - Push a cleanup to be run at the end of the |
| 332 | /// current full-expression. Safe against the possibility that |
| 333 | /// we're currently inside a conditionally-evaluated expression. |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 334 | template <class T, class A0, class A1> |
| 335 | void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1) { |
| 336 | // If we're not in a conditional branch, or if none of the |
| 337 | // arguments requires saving, then use the unconditional cleanup. |
John McCall | c4a1a84 | 2011-07-12 00:15:30 +0000 | [diff] [blame] | 338 | if (!isInConditionalBranch()) |
| 339 | return EHStack.pushCleanup<T>(kind, a0, a1); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 340 | |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 341 | typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); |
| 342 | typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 343 | |
| 344 | typedef EHScopeStack::ConditionalCleanup2<T, A0, A1> CleanupType; |
John McCall | 3ad32c8 | 2011-01-28 08:37:24 +0000 | [diff] [blame] | 345 | EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved); |
| 346 | initFullExprCleanup(); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 347 | } |
| 348 | |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 349 | /// pushFullExprCleanup - Push a cleanup to be run at the end of the |
| 350 | /// current full-expression. Safe against the possibility that |
| 351 | /// we're currently inside a conditionally-evaluated expression. |
| 352 | template <class T, class A0, class A1, class A2> |
| 353 | void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1, A2 a2) { |
| 354 | // If we're not in a conditional branch, or if none of the |
| 355 | // arguments requires saving, then use the unconditional cleanup. |
| 356 | if (!isInConditionalBranch()) { |
John McCall | c4a1a84 | 2011-07-12 00:15:30 +0000 | [diff] [blame] | 357 | return EHStack.pushCleanup<T>(kind, a0, a1, a2); |
Douglas Gregor | d7b2316 | 2011-06-22 16:12:01 +0000 | [diff] [blame] | 358 | } |
| 359 | |
| 360 | typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); |
| 361 | typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); |
| 362 | typename DominatingValue<A2>::saved_type a2_saved = saveValueInCond(a2); |
| 363 | |
| 364 | typedef EHScopeStack::ConditionalCleanup3<T, A0, A1, A2> CleanupType; |
| 365 | EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved, a2_saved); |
| 366 | initFullExprCleanup(); |
| 367 | } |
| 368 | |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 369 | /// pushFullExprCleanup - Push a cleanup to be run at the end of the |
| 370 | /// current full-expression. Safe against the possibility that |
| 371 | /// we're currently inside a conditionally-evaluated expression. |
| 372 | template <class T, class A0, class A1, class A2, class A3> |
| 373 | void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1, A2 a2, A3 a3) { |
| 374 | // If we're not in a conditional branch, or if none of the |
| 375 | // arguments requires saving, then use the unconditional cleanup. |
| 376 | if (!isInConditionalBranch()) { |
| 377 | return EHStack.pushCleanup<T>(kind, a0, a1, a2, a3); |
| 378 | } |
| 379 | |
| 380 | typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); |
| 381 | typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); |
| 382 | typename DominatingValue<A2>::saved_type a2_saved = saveValueInCond(a2); |
| 383 | typename DominatingValue<A3>::saved_type a3_saved = saveValueInCond(a3); |
| 384 | |
| 385 | typedef EHScopeStack::ConditionalCleanup4<T, A0, A1, A2, A3> CleanupType; |
| 386 | EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved, |
| 387 | a2_saved, a3_saved); |
| 388 | initFullExprCleanup(); |
| 389 | } |
| 390 | |
Richard Smith | 8a07cd3 | 2013-06-12 20:42:33 +0000 | [diff] [blame] | 391 | /// \brief Queue a cleanup to be pushed after finishing the current |
| 392 | /// full-expression. |
| 393 | template <class T, class A0, class A1, class A2, class A3> |
| 394 | void pushCleanupAfterFullExpr(CleanupKind Kind, A0 a0, A1 a1, A2 a2, A3 a3) { |
| 395 | assert(!isInConditionalBranch() && "can't defer conditional cleanup"); |
| 396 | |
| 397 | LifetimeExtendedCleanupHeader Header = { sizeof(T), Kind }; |
| 398 | |
| 399 | size_t OldSize = LifetimeExtendedCleanupStack.size(); |
| 400 | LifetimeExtendedCleanupStack.resize( |
| 401 | LifetimeExtendedCleanupStack.size() + sizeof(Header) + Header.Size); |
| 402 | |
| 403 | char *Buffer = &LifetimeExtendedCleanupStack[OldSize]; |
| 404 | new (Buffer) LifetimeExtendedCleanupHeader(Header); |
| 405 | new (Buffer + sizeof(Header)) T(a0, a1, a2, a3); |
| 406 | } |
| 407 | |
John McCall | 6f103ba | 2011-11-10 10:43:54 +0000 | [diff] [blame] | 408 | /// Set up the last cleaup that was pushed as a conditional |
| 409 | /// full-expression cleanup. |
| 410 | void initFullExprCleanup(); |
| 411 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 412 | /// PushDestructorCleanup - Push a cleanup to call the |
| 413 | /// complete-object destructor of an object of the given type at the |
| 414 | /// given address. Does nothing if T is not a C++ class type with a |
| 415 | /// non-trivial destructor. |
| 416 | void PushDestructorCleanup(QualType T, llvm::Value *Addr); |
| 417 | |
John McCall | 81407d4 | 2010-07-21 06:29:51 +0000 | [diff] [blame] | 418 | /// PushDestructorCleanup - Push a cleanup to call the |
| 419 | /// complete-object variant of the given destructor on the object at |
| 420 | /// the given address. |
| 421 | void PushDestructorCleanup(const CXXDestructorDecl *Dtor, |
| 422 | llvm::Value *Addr); |
| 423 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 424 | /// PopCleanupBlock - Will pop the cleanup entry on the stack and |
| 425 | /// process all branch fixups. |
Adrian Prantl | 1c3db76 | 2013-05-16 00:41:26 +0000 | [diff] [blame] | 426 | void PopCleanupBlock(bool FallThroughIsBranchThrough = false); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 427 | |
John McCall | 7d8647f | 2010-09-14 07:57:04 +0000 | [diff] [blame] | 428 | /// DeactivateCleanupBlock - Deactivates the given cleanup block. |
| 429 | /// The block cannot be reactivated. Pops it if it's the top of the |
| 430 | /// stack. |
John McCall | 6f103ba | 2011-11-10 10:43:54 +0000 | [diff] [blame] | 431 | /// |
| 432 | /// \param DominatingIP - An instruction which is known to |
| 433 | /// dominate the current IP (if set) and which lies along |
| 434 | /// all paths of execution between the current IP and the |
| 435 | /// the point at which the cleanup comes into scope. |
| 436 | void DeactivateCleanupBlock(EHScopeStack::stable_iterator Cleanup, |
| 437 | llvm::Instruction *DominatingIP); |
John McCall | 7d8647f | 2010-09-14 07:57:04 +0000 | [diff] [blame] | 438 | |
| 439 | /// ActivateCleanupBlock - Activates an initially-inactive cleanup. |
| 440 | /// Cannot be used to resurrect a deactivated cleanup. |
John McCall | 6f103ba | 2011-11-10 10:43:54 +0000 | [diff] [blame] | 441 | /// |
| 442 | /// \param DominatingIP - An instruction which is known to |
| 443 | /// dominate the current IP (if set) and which lies along |
| 444 | /// all paths of execution between the current IP and the |
| 445 | /// the point at which the cleanup comes into scope. |
| 446 | void ActivateCleanupBlock(EHScopeStack::stable_iterator Cleanup, |
| 447 | llvm::Instruction *DominatingIP); |
John McCall | cd2d2b7 | 2010-08-13 21:20:51 +0000 | [diff] [blame] | 448 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 449 | /// \brief Enters a new scope for capturing cleanups, all of which |
| 450 | /// will be executed once the scope is exited. |
| 451 | class RunCleanupsScope { |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 452 | EHScopeStack::stable_iterator CleanupStackDepth; |
Richard Smith | 8a07cd3 | 2013-06-12 20:42:33 +0000 | [diff] [blame] | 453 | size_t LifetimeExtendedCleanupStackSize; |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 454 | bool OldDidCallStackSave; |
John McCall | ed38313 | 2013-03-01 01:24:35 +0000 | [diff] [blame] | 455 | protected: |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 456 | bool PerformCleanup; |
John McCall | ed38313 | 2013-03-01 01:24:35 +0000 | [diff] [blame] | 457 | private: |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 458 | |
Dmitri Gribenko | f56faa0 | 2012-09-15 20:20:27 +0000 | [diff] [blame] | 459 | RunCleanupsScope(const RunCleanupsScope &) LLVM_DELETED_FUNCTION; |
| 460 | void operator=(const RunCleanupsScope &) LLVM_DELETED_FUNCTION; |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 461 | |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 462 | protected: |
| 463 | CodeGenFunction& CGF; |
Will Dietz | 4f45bc0 | 2013-01-18 11:30:38 +0000 | [diff] [blame] | 464 | |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 465 | public: |
| 466 | /// \brief Enter a new cleanup scope. |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 467 | explicit RunCleanupsScope(CodeGenFunction &CGF) |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 468 | : PerformCleanup(true), CGF(CGF) |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 469 | { |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 470 | CleanupStackDepth = CGF.EHStack.stable_begin(); |
Richard Smith | 8a07cd3 | 2013-06-12 20:42:33 +0000 | [diff] [blame] | 471 | LifetimeExtendedCleanupStackSize = |
| 472 | CGF.LifetimeExtendedCleanupStack.size(); |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 473 | OldDidCallStackSave = CGF.DidCallStackSave; |
Argyrios Kyrtzidis | 4ada2ca | 2010-09-14 00:42:34 +0000 | [diff] [blame] | 474 | CGF.DidCallStackSave = false; |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 475 | } |
| 476 | |
| 477 | /// \brief Exit this cleanup scope, emitting any accumulated |
| 478 | /// cleanups. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 479 | ~RunCleanupsScope() { |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 480 | if (PerformCleanup) { |
| 481 | CGF.DidCallStackSave = OldDidCallStackSave; |
Richard Smith | 8a07cd3 | 2013-06-12 20:42:33 +0000 | [diff] [blame] | 482 | CGF.PopCleanupBlocks(CleanupStackDepth, |
| 483 | LifetimeExtendedCleanupStackSize); |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 484 | } |
| 485 | } |
| 486 | |
| 487 | /// \brief Determine whether this scope requires any cleanups. |
| 488 | bool requiresCleanups() const { |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 489 | return CGF.EHStack.stable_begin() != CleanupStackDepth; |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 490 | } |
| 491 | |
| 492 | /// \brief Force the emission of cleanups now, instead of waiting |
| 493 | /// until this object is destroyed. |
| 494 | void ForceCleanup() { |
| 495 | assert(PerformCleanup && "Already forced cleanup"); |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 496 | CGF.DidCallStackSave = OldDidCallStackSave; |
Richard Smith | 8a07cd3 | 2013-06-12 20:42:33 +0000 | [diff] [blame] | 497 | CGF.PopCleanupBlocks(CleanupStackDepth, |
| 498 | LifetimeExtendedCleanupStackSize); |
Douglas Gregor | 5656e14 | 2009-11-24 21:15:44 +0000 | [diff] [blame] | 499 | PerformCleanup = false; |
Douglas Gregor | 01234bb | 2009-11-24 16:43:22 +0000 | [diff] [blame] | 500 | } |
| 501 | }; |
| 502 | |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 503 | class LexicalScope: protected RunCleanupsScope { |
| 504 | SourceRange Range; |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 505 | SmallVector<const LabelDecl*, 4> Labels; |
| 506 | LexicalScope *ParentScope; |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 507 | |
Dmitri Gribenko | f56faa0 | 2012-09-15 20:20:27 +0000 | [diff] [blame] | 508 | LexicalScope(const LexicalScope &) LLVM_DELETED_FUNCTION; |
| 509 | void operator=(const LexicalScope &) LLVM_DELETED_FUNCTION; |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 510 | |
| 511 | public: |
| 512 | /// \brief Enter a new cleanup scope. |
| 513 | explicit LexicalScope(CodeGenFunction &CGF, SourceRange Range) |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 514 | : RunCleanupsScope(CGF), Range(Range), ParentScope(CGF.CurLexicalScope) { |
| 515 | CGF.CurLexicalScope = this; |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 516 | if (CGDebugInfo *DI = CGF.getDebugInfo()) |
| 517 | DI->EmitLexicalBlockStart(CGF.Builder, Range.getBegin()); |
| 518 | } |
| 519 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 520 | void addLabel(const LabelDecl *label) { |
| 521 | assert(PerformCleanup && "adding label to dead scope?"); |
| 522 | Labels.push_back(label); |
| 523 | } |
| 524 | |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 525 | /// \brief Exit this cleanup scope, emitting any accumulated |
| 526 | /// cleanups. |
| 527 | ~LexicalScope() { |
Adrian Prantl | efb72ad | 2013-04-01 19:02:06 +0000 | [diff] [blame] | 528 | if (CGDebugInfo *DI = CGF.getDebugInfo()) |
| 529 | DI->EmitLexicalBlockEnd(CGF.Builder, Range.getEnd()); |
| 530 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 531 | // If we should perform a cleanup, force them now. Note that |
| 532 | // this ends the cleanup scope before rescoping any labels. |
| 533 | if (PerformCleanup) ForceCleanup(); |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 534 | } |
| 535 | |
| 536 | /// \brief Force the emission of cleanups now, instead of waiting |
| 537 | /// until this object is destroyed. |
| 538 | void ForceCleanup() { |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 539 | CGF.CurLexicalScope = ParentScope; |
Adrian Prantl | efb72ad | 2013-04-01 19:02:06 +0000 | [diff] [blame] | 540 | RunCleanupsScope::ForceCleanup(); |
| 541 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 542 | if (!Labels.empty()) |
| 543 | rescopeLabels(); |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 544 | } |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 545 | |
| 546 | void rescopeLabels(); |
Eric Christopher | c328779 | 2011-10-19 00:43:52 +0000 | [diff] [blame] | 547 | }; |
| 548 | |
Anders Carlsson | 44ec82b | 2010-03-30 03:14:41 +0000 | [diff] [blame] | 549 | |
Richard Smith | 8a07cd3 | 2013-06-12 20:42:33 +0000 | [diff] [blame] | 550 | /// \brief Takes the old cleanup stack size and emits the cleanup blocks |
| 551 | /// that have been added. |
Adrian Prantl | 1c3db76 | 2013-05-16 00:41:26 +0000 | [diff] [blame] | 552 | void PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize); |
Anders Carlsson | 44ec82b | 2010-03-30 03:14:41 +0000 | [diff] [blame] | 553 | |
Richard Smith | 8a07cd3 | 2013-06-12 20:42:33 +0000 | [diff] [blame] | 554 | /// \brief Takes the old cleanup stack size and emits the cleanup blocks |
| 555 | /// that have been added, then adds all lifetime-extended cleanups from |
| 556 | /// the given position to the stack. |
| 557 | void PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize, |
| 558 | size_t OldLifetimeExtendedStackSize); |
| 559 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 560 | void ResolveBranchFixups(llvm::BasicBlock *Target); |
| 561 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 562 | /// The given basic block lies in the current EH scope, but may be a |
| 563 | /// target of a potentially scope-crossing jump; get a stable handle |
| 564 | /// to which we can perform this jump later. |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 565 | JumpDest getJumpDestInCurrentScope(llvm::BasicBlock *Target) { |
John McCall | 413e677 | 2010-07-28 01:07:35 +0000 | [diff] [blame] | 566 | return JumpDest(Target, |
| 567 | EHStack.getInnermostNormalCleanup(), |
| 568 | NextCleanupDestIndex++); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 569 | } |
Anders Carlsson | c71c845 | 2009-02-07 23:50:39 +0000 | [diff] [blame] | 570 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 571 | /// The given basic block lies in the current EH scope, but may be a |
| 572 | /// target of a potentially scope-crossing jump; get a stable handle |
| 573 | /// to which we can perform this jump later. |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 574 | JumpDest getJumpDestInCurrentScope(StringRef Name = StringRef()) { |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 575 | return getJumpDestInCurrentScope(createBasicBlock(Name)); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 576 | } |
| 577 | |
| 578 | /// EmitBranchThroughCleanup - Emit a branch from the current insert |
| 579 | /// block through the normal cleanup handling code (if any) and then |
| 580 | /// on to \arg Dest. |
| 581 | void EmitBranchThroughCleanup(JumpDest Dest); |
Chris Lattner | b11f919 | 2011-04-17 00:54:30 +0000 | [diff] [blame] | 582 | |
| 583 | /// isObviouslyBranchWithoutCleanups - Return true if a branch to the |
| 584 | /// specified destination obviously has no cleanups to run. 'false' is always |
| 585 | /// a conservatively correct answer for this method. |
| 586 | bool isObviouslyBranchWithoutCleanups(JumpDest Dest) const; |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 587 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 588 | /// popCatchScope - Pops the catch scope at the top of the EHScope |
| 589 | /// stack, emitting any required code (other than the catch handlers |
| 590 | /// themselves). |
| 591 | void popCatchScope(); |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 592 | |
David Chisnall | c686004 | 2012-11-07 16:50:40 +0000 | [diff] [blame] | 593 | llvm::BasicBlock *getEHResumeBlock(bool isCleanup); |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 594 | llvm::BasicBlock *getEHDispatchBlock(EHScopeStack::stable_iterator scope); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 595 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 596 | /// An object to manage conditionally-evaluated expressions. |
| 597 | class ConditionalEvaluation { |
| 598 | llvm::BasicBlock *StartBB; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 599 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 600 | public: |
| 601 | ConditionalEvaluation(CodeGenFunction &CGF) |
| 602 | : StartBB(CGF.Builder.GetInsertBlock()) {} |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 603 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 604 | void begin(CodeGenFunction &CGF) { |
| 605 | assert(CGF.OutermostConditional != this); |
| 606 | if (!CGF.OutermostConditional) |
| 607 | CGF.OutermostConditional = this; |
| 608 | } |
| 609 | |
| 610 | void end(CodeGenFunction &CGF) { |
| 611 | assert(CGF.OutermostConditional != 0); |
| 612 | if (CGF.OutermostConditional == this) |
| 613 | CGF.OutermostConditional = 0; |
| 614 | } |
| 615 | |
| 616 | /// Returns a block which will be executed prior to each |
| 617 | /// evaluation of the conditional code. |
| 618 | llvm::BasicBlock *getStartingBlock() const { |
| 619 | return StartBB; |
| 620 | } |
| 621 | }; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 622 | |
John McCall | 3019c44 | 2010-09-17 00:50:28 +0000 | [diff] [blame] | 623 | /// isInConditionalBranch - Return true if we're currently emitting |
| 624 | /// one branch or the other of a conditional expression. |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 625 | bool isInConditionalBranch() const { return OutermostConditional != 0; } |
| 626 | |
John McCall | 6f103ba | 2011-11-10 10:43:54 +0000 | [diff] [blame] | 627 | void setBeforeOutermostConditional(llvm::Value *value, llvm::Value *addr) { |
| 628 | assert(isInConditionalBranch()); |
| 629 | llvm::BasicBlock *block = OutermostConditional->getStartingBlock(); |
| 630 | new llvm::StoreInst(value, addr, &block->back()); |
| 631 | } |
| 632 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 633 | /// An RAII object to record that we're evaluating a statement |
| 634 | /// expression. |
| 635 | class StmtExprEvaluation { |
| 636 | CodeGenFunction &CGF; |
| 637 | |
| 638 | /// We have to save the outermost conditional: cleanups in a |
| 639 | /// statement expression aren't conditional just because the |
| 640 | /// StmtExpr is. |
| 641 | ConditionalEvaluation *SavedOutermostConditional; |
| 642 | |
| 643 | public: |
| 644 | StmtExprEvaluation(CodeGenFunction &CGF) |
| 645 | : CGF(CGF), SavedOutermostConditional(CGF.OutermostConditional) { |
| 646 | CGF.OutermostConditional = 0; |
| 647 | } |
| 648 | |
| 649 | ~StmtExprEvaluation() { |
| 650 | CGF.OutermostConditional = SavedOutermostConditional; |
| 651 | CGF.EnsureInsertPoint(); |
| 652 | } |
| 653 | }; |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 654 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 655 | /// An object which temporarily prevents a value from being |
| 656 | /// destroyed by aggressive peephole optimizations that assume that |
| 657 | /// all uses of a value have been realized in the IR. |
| 658 | class PeepholeProtection { |
| 659 | llvm::Instruction *Inst; |
| 660 | friend class CodeGenFunction; |
| 661 | |
| 662 | public: |
| 663 | PeepholeProtection() : Inst(0) {} |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 664 | }; |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 665 | |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 666 | /// A non-RAII class containing all the information about a bound |
| 667 | /// opaque value. OpaqueValueMapping, below, is a RAII wrapper for |
| 668 | /// this which makes individual mappings very simple; using this |
| 669 | /// class directly is useful when you have a variable number of |
| 670 | /// opaque values or don't want the RAII functionality for some |
| 671 | /// reason. |
| 672 | class OpaqueValueMappingData { |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 673 | const OpaqueValueExpr *OpaqueValue; |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 674 | bool BoundLValue; |
| 675 | CodeGenFunction::PeepholeProtection Protection; |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 676 | |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 677 | OpaqueValueMappingData(const OpaqueValueExpr *ov, |
| 678 | bool boundLValue) |
| 679 | : OpaqueValue(ov), BoundLValue(boundLValue) {} |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 680 | public: |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 681 | OpaqueValueMappingData() : OpaqueValue(0) {} |
| 682 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 683 | static bool shouldBindAsLValue(const Expr *expr) { |
John McCall | a5493f8 | 2011-11-08 22:54:08 +0000 | [diff] [blame] | 684 | // gl-values should be bound as l-values for obvious reasons. |
| 685 | // Records should be bound as l-values because IR generation |
| 686 | // always keeps them in memory. Expressions of function type |
| 687 | // act exactly like l-values but are formally required to be |
| 688 | // r-values in C. |
| 689 | return expr->isGLValue() || |
| 690 | expr->getType()->isRecordType() || |
| 691 | expr->getType()->isFunctionType(); |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 692 | } |
| 693 | |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 694 | static OpaqueValueMappingData bind(CodeGenFunction &CGF, |
| 695 | const OpaqueValueExpr *ov, |
| 696 | const Expr *e) { |
| 697 | if (shouldBindAsLValue(ov)) |
| 698 | return bind(CGF, ov, CGF.EmitLValue(e)); |
| 699 | return bind(CGF, ov, CGF.EmitAnyExpr(e)); |
| 700 | } |
| 701 | |
| 702 | static OpaqueValueMappingData bind(CodeGenFunction &CGF, |
| 703 | const OpaqueValueExpr *ov, |
| 704 | const LValue &lv) { |
| 705 | assert(shouldBindAsLValue(ov)); |
| 706 | CGF.OpaqueLValues.insert(std::make_pair(ov, lv)); |
| 707 | return OpaqueValueMappingData(ov, true); |
| 708 | } |
| 709 | |
| 710 | static OpaqueValueMappingData bind(CodeGenFunction &CGF, |
| 711 | const OpaqueValueExpr *ov, |
| 712 | const RValue &rv) { |
| 713 | assert(!shouldBindAsLValue(ov)); |
| 714 | CGF.OpaqueRValues.insert(std::make_pair(ov, rv)); |
| 715 | |
| 716 | OpaqueValueMappingData data(ov, false); |
| 717 | |
| 718 | // Work around an extremely aggressive peephole optimization in |
| 719 | // EmitScalarConversion which assumes that all other uses of a |
| 720 | // value are extant. |
| 721 | data.Protection = CGF.protectFromPeepholes(rv); |
| 722 | |
| 723 | return data; |
| 724 | } |
| 725 | |
| 726 | bool isValid() const { return OpaqueValue != 0; } |
| 727 | void clear() { OpaqueValue = 0; } |
| 728 | |
| 729 | void unbind(CodeGenFunction &CGF) { |
| 730 | assert(OpaqueValue && "no data to unbind!"); |
| 731 | |
| 732 | if (BoundLValue) { |
| 733 | CGF.OpaqueLValues.erase(OpaqueValue); |
| 734 | } else { |
| 735 | CGF.OpaqueRValues.erase(OpaqueValue); |
| 736 | CGF.unprotectFromPeepholes(Protection); |
| 737 | } |
| 738 | } |
| 739 | }; |
| 740 | |
| 741 | /// An RAII object to set (and then clear) a mapping for an OpaqueValueExpr. |
| 742 | class OpaqueValueMapping { |
| 743 | CodeGenFunction &CGF; |
| 744 | OpaqueValueMappingData Data; |
| 745 | |
| 746 | public: |
| 747 | static bool shouldBindAsLValue(const Expr *expr) { |
| 748 | return OpaqueValueMappingData::shouldBindAsLValue(expr); |
| 749 | } |
| 750 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 751 | /// Build the opaque value mapping for the given conditional |
| 752 | /// operator if it's the GNU ?: extension. This is a common |
| 753 | /// enough pattern that the convenience operator is really |
| 754 | /// helpful. |
| 755 | /// |
| 756 | OpaqueValueMapping(CodeGenFunction &CGF, |
| 757 | const AbstractConditionalOperator *op) : CGF(CGF) { |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 758 | if (isa<ConditionalOperator>(op)) |
| 759 | // Leave Data empty. |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 760 | return; |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 761 | |
| 762 | const BinaryConditionalOperator *e = cast<BinaryConditionalOperator>(op); |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 763 | Data = OpaqueValueMappingData::bind(CGF, e->getOpaqueValue(), |
| 764 | e->getCommon()); |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 765 | } |
| 766 | |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 767 | OpaqueValueMapping(CodeGenFunction &CGF, |
| 768 | const OpaqueValueExpr *opaqueValue, |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 769 | LValue lvalue) |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 770 | : CGF(CGF), Data(OpaqueValueMappingData::bind(CGF, opaqueValue, lvalue)) { |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 771 | } |
| 772 | |
| 773 | OpaqueValueMapping(CodeGenFunction &CGF, |
| 774 | const OpaqueValueExpr *opaqueValue, |
| 775 | RValue rvalue) |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 776 | : CGF(CGF), Data(OpaqueValueMappingData::bind(CGF, opaqueValue, rvalue)) { |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 777 | } |
| 778 | |
| 779 | void pop() { |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 780 | Data.unbind(CGF); |
| 781 | Data.clear(); |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 782 | } |
| 783 | |
| 784 | ~OpaqueValueMapping() { |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 785 | if (Data.isValid()) Data.unbind(CGF); |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 786 | } |
| 787 | }; |
Fariborz Jahanian | e220455 | 2010-11-16 19:29:39 +0000 | [diff] [blame] | 788 | |
| 789 | /// getByrefValueFieldNumber - Given a declaration, returns the LLVM field |
| 790 | /// number that holds the value. |
| 791 | unsigned getByRefValueLLVMField(const ValueDecl *VD) const; |
Fariborz Jahanian | 52a80e1 | 2011-01-26 23:08:27 +0000 | [diff] [blame] | 792 | |
| 793 | /// BuildBlockByrefAddress - Computes address location of the |
| 794 | /// variable which is declared as __block. |
| 795 | llvm::Value *BuildBlockByrefAddress(llvm::Value *BaseAddr, |
| 796 | const VarDecl *V); |
Chris Lattner | 7f02f72 | 2007-08-24 05:35:26 +0000 | [diff] [blame] | 797 | private: |
Chris Lattner | d9becd1 | 2009-10-28 23:59:40 +0000 | [diff] [blame] | 798 | CGDebugInfo *DebugInfo; |
Devang Patel | aa11289 | 2011-03-07 18:45:56 +0000 | [diff] [blame] | 799 | bool DisableDebugInfo; |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 800 | |
John McCall | 93c332a | 2011-05-28 21:13:02 +0000 | [diff] [blame] | 801 | /// DidCallStackSave - Whether llvm.stacksave has been called. Used to avoid |
| 802 | /// calling llvm.stacksave for multiple VLAs in the same scope. |
| 803 | bool DidCallStackSave; |
| 804 | |
Mike Stump | f71d232 | 2009-11-30 20:08:49 +0000 | [diff] [blame] | 805 | /// IndirectBranch - The first time an indirect goto is seen we create a block |
| 806 | /// with an indirect branch. Every time we see the address of a label taken, |
| 807 | /// we add the label to the indirect goto. Every subsequent indirect goto is |
| 808 | /// codegen'd as a jump to the IndirectBranch's basic block. |
Chris Lattner | d9becd1 | 2009-10-28 23:59:40 +0000 | [diff] [blame] | 809 | llvm::IndirectBrInst *IndirectBranch; |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 810 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 811 | /// LocalDeclMap - This keeps track of the LLVM allocas or globals for local C |
| 812 | /// decls. |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 813 | typedef llvm::DenseMap<const Decl*, llvm::Value*> DeclMapTy; |
| 814 | DeclMapTy LocalDeclMap; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 815 | |
| 816 | /// 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] | 817 | llvm::DenseMap<const LabelDecl*, JumpDest> LabelMap; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 818 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 819 | // BreakContinueStack - This keeps track of where break and continue |
Anders Carlsson | e4b6d34 | 2009-02-10 05:52:02 +0000 | [diff] [blame] | 820 | // statements should jump to. |
Chris Lattner | da13870 | 2007-07-16 21:28:45 +0000 | [diff] [blame] | 821 | struct BreakContinue { |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 822 | BreakContinue(JumpDest Break, JumpDest Continue) |
| 823 | : BreakBlock(Break), ContinueBlock(Continue) {} |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 824 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 825 | JumpDest BreakBlock; |
| 826 | JumpDest ContinueBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 827 | }; |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 828 | SmallVector<BreakContinue, 8> BreakContinueStack; |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 829 | |
Zhongxing Xu | 170fd49 | 2012-01-14 09:08:15 +0000 | [diff] [blame] | 830 | /// SwitchInsn - This is nearest current switch instruction. It is null if |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 831 | /// current context is not in a switch. |
Devang Patel | 51b09f2 | 2007-10-04 23:45:31 +0000 | [diff] [blame] | 832 | llvm::SwitchInst *SwitchInsn; |
| 833 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 834 | /// CaseRangeBlock - This block holds if condition check for last case |
Devang Patel | 80fd5f9 | 2007-10-09 17:08:50 +0000 | [diff] [blame] | 835 | /// statement range in current switch instruction. |
Devang Patel | c049e4f | 2007-10-08 20:57:48 +0000 | [diff] [blame] | 836 | llvm::BasicBlock *CaseRangeBlock; |
| 837 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 838 | /// OpaqueLValues - Keeps track of the current set of opaque value |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 839 | /// expressions. |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 840 | llvm::DenseMap<const OpaqueValueExpr *, LValue> OpaqueLValues; |
| 841 | llvm::DenseMap<const OpaqueValueExpr *, RValue> OpaqueRValues; |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 842 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 843 | // VLASizeMap - This keeps track of the associated size for each VLA type. |
Eli Friedman | bbed6b9 | 2009-08-15 02:50:32 +0000 | [diff] [blame] | 844 | // We track this by the size expression rather than the type itself because |
| 845 | // in certain situations, like a const qualifier applied to an VLA typedef, |
| 846 | // multiple VLA types can share the same size expression. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 847 | // FIXME: Maybe this could be a stack of maps that is pushed/popped as we |
| 848 | // enter/leave scopes. |
Eli Friedman | bbed6b9 | 2009-08-15 02:50:32 +0000 | [diff] [blame] | 849 | llvm::DenseMap<const Expr*, llvm::Value*> VLASizeMap; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 850 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 851 | /// A block containing a single 'unreachable' instruction. Created |
| 852 | /// lazily by getUnreachableBlock(). |
| 853 | llvm::BasicBlock *UnreachableBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 854 | |
Adrian Prantl | d072e59 | 2013-05-03 20:11:48 +0000 | [diff] [blame] | 855 | /// Counts of the number return expressions in the function. |
| 856 | unsigned NumReturnExprs; |
Adrian Prantl | fa6b079 | 2013-05-02 17:30:20 +0000 | [diff] [blame] | 857 | |
| 858 | /// Count the number of simple (constant) return expressions in the function. |
| 859 | unsigned NumSimpleReturnExprs; |
| 860 | |
Adrian Prantl | d072e59 | 2013-05-03 20:11:48 +0000 | [diff] [blame] | 861 | /// The last regular (non-return) debug location (breakpoint) in the function. |
| 862 | SourceLocation LastStopPoint; |
Adrian Prantl | fa6b079 | 2013-05-02 17:30:20 +0000 | [diff] [blame] | 863 | |
Richard Smith | c3bf52c | 2013-04-20 22:23:05 +0000 | [diff] [blame] | 864 | public: |
| 865 | /// A scope within which we are constructing the fields of an object which |
| 866 | /// might use a CXXDefaultInitExpr. This stashes away a 'this' value to use |
| 867 | /// if we need to evaluate a CXXDefaultInitExpr within the evaluation. |
| 868 | class FieldConstructionScope { |
| 869 | public: |
| 870 | FieldConstructionScope(CodeGenFunction &CGF, llvm::Value *This) |
| 871 | : CGF(CGF), OldCXXDefaultInitExprThis(CGF.CXXDefaultInitExprThis) { |
| 872 | CGF.CXXDefaultInitExprThis = This; |
| 873 | } |
| 874 | ~FieldConstructionScope() { |
| 875 | CGF.CXXDefaultInitExprThis = OldCXXDefaultInitExprThis; |
| 876 | } |
| 877 | |
| 878 | private: |
| 879 | CodeGenFunction &CGF; |
| 880 | llvm::Value *OldCXXDefaultInitExprThis; |
| 881 | }; |
| 882 | |
| 883 | /// The scope of a CXXDefaultInitExpr. Within this scope, the value of 'this' |
| 884 | /// is overridden to be the object under construction. |
| 885 | class CXXDefaultInitExprScope { |
| 886 | public: |
| 887 | CXXDefaultInitExprScope(CodeGenFunction &CGF) |
| 888 | : CGF(CGF), OldCXXThisValue(CGF.CXXThisValue) { |
| 889 | CGF.CXXThisValue = CGF.CXXDefaultInitExprThis; |
| 890 | } |
| 891 | ~CXXDefaultInitExprScope() { |
| 892 | CGF.CXXThisValue = OldCXXThisValue; |
| 893 | } |
| 894 | |
| 895 | public: |
| 896 | CodeGenFunction &CGF; |
| 897 | llvm::Value *OldCXXThisValue; |
| 898 | }; |
| 899 | |
| 900 | private: |
Anders Carlsson | f6c56e2 | 2009-11-25 03:15:49 +0000 | [diff] [blame] | 901 | /// CXXThisDecl - When generating code for a C++ member function, |
| 902 | /// this will hold the implicit 'this' declaration. |
Eli Friedman | cec5ebd | 2012-02-11 02:57:39 +0000 | [diff] [blame] | 903 | ImplicitParamDecl *CXXABIThisDecl; |
| 904 | llvm::Value *CXXABIThisValue; |
John McCall | 2504941 | 2010-02-16 22:04:33 +0000 | [diff] [blame] | 905 | llvm::Value *CXXThisValue; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 906 | |
Richard Smith | c3bf52c | 2013-04-20 22:23:05 +0000 | [diff] [blame] | 907 | /// The value of 'this' to use when evaluating CXXDefaultInitExprs within |
| 908 | /// this expression. |
| 909 | llvm::Value *CXXDefaultInitExprThis; |
| 910 | |
Timur Iskhodzhanov | 59660c2 | 2013-02-13 08:37:51 +0000 | [diff] [blame] | 911 | /// CXXStructorImplicitParamDecl - When generating code for a constructor or |
| 912 | /// destructor, this will hold the implicit argument (e.g. VTT). |
| 913 | ImplicitParamDecl *CXXStructorImplicitParamDecl; |
| 914 | llvm::Value *CXXStructorImplicitParamValue; |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 915 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 916 | /// OutermostConditional - Points to the outermost active |
| 917 | /// conditional control. This is used so that we know if a |
| 918 | /// temporary should be destroyed conditionally. |
| 919 | ConditionalEvaluation *OutermostConditional; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 920 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 921 | /// The current lexical scope. |
| 922 | LexicalScope *CurLexicalScope; |
Anders Carlsson | 7dfa407 | 2009-09-12 02:14:24 +0000 | [diff] [blame] | 923 | |
Adrian Prantl | 1c3db76 | 2013-05-16 00:41:26 +0000 | [diff] [blame] | 924 | /// The current source location that should be used for exception |
| 925 | /// handling code. |
| 926 | SourceLocation CurEHLocation; |
| 927 | |
Anders Carlsson | 7dfa407 | 2009-09-12 02:14:24 +0000 | [diff] [blame] | 928 | /// ByrefValueInfoMap - For each __block variable, contains a pair of the LLVM |
| 929 | /// type as well as the field number that contains the actual data. |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 930 | llvm::DenseMap<const ValueDecl *, std::pair<llvm::Type *, |
Anders Carlsson | 7dfa407 | 2009-09-12 02:14:24 +0000 | [diff] [blame] | 931 | unsigned> > ByRefValueInfo; |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 932 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 933 | llvm::BasicBlock *TerminateLandingPad; |
Mike Stump | 182f383 | 2009-12-10 00:02:42 +0000 | [diff] [blame] | 934 | llvm::BasicBlock *TerminateHandler; |
Chris Lattner | 83252dc | 2010-07-20 21:07:09 +0000 | [diff] [blame] | 935 | llvm::BasicBlock *TrapBB; |
Eli Friedman | 9406705 | 2009-12-10 02:21:21 +0000 | [diff] [blame] | 936 | |
Tanya Lattner | 0df579e | 2012-07-09 22:06:01 +0000 | [diff] [blame] | 937 | /// Add a kernel metadata node to the named metadata node 'opencl.kernels'. |
| 938 | /// In the kernel metadata node, reference the kernel function and metadata |
| 939 | /// nodes for its optional attribute qualifiers (OpenCL 1.1 6.7.2): |
Joey Gouly | 37453b9 | 2013-03-08 09:42:32 +0000 | [diff] [blame] | 940 | /// - A node for the vec_type_hint(<type>) qualifier contains string |
| 941 | /// "vec_type_hint", an undefined value of the <type> data type, |
| 942 | /// 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] | 943 | /// - A node for the work_group_size_hint(X,Y,Z) qualifier contains string |
| 944 | /// "work_group_size_hint", and three 32-bit integers X, Y and Z. |
| 945 | /// - A node for the reqd_work_group_size(X,Y,Z) qualifier contains string |
| 946 | /// "reqd_work_group_size", and three 32-bit integers X, Y and Z. |
| 947 | void EmitOpenCLKernelMetadata(const FunctionDecl *FD, |
| 948 | llvm::Function *Fn); |
| 949 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 950 | public: |
Fariborz Jahanian | 4904bf4 | 2012-06-26 16:06:38 +0000 | [diff] [blame] | 951 | CodeGenFunction(CodeGenModule &cgm, bool suppressNewContext=false); |
John McCall | 1a343eb | 2011-11-10 08:15:53 +0000 | [diff] [blame] | 952 | ~CodeGenFunction(); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 953 | |
John McCall | 1e7fe75 | 2010-09-02 09:58:18 +0000 | [diff] [blame] | 954 | CodeGenTypes &getTypes() const { return CGM.getTypes(); } |
John McCall | f2aac84 | 2011-05-15 02:34:36 +0000 | [diff] [blame] | 955 | ASTContext &getContext() const { return CGM.getContext(); } |
Devang Patel | aa11289 | 2011-03-07 18:45:56 +0000 | [diff] [blame] | 956 | CGDebugInfo *getDebugInfo() { |
| 957 | if (DisableDebugInfo) |
| 958 | return NULL; |
| 959 | return DebugInfo; |
| 960 | } |
| 961 | void disableDebugInfo() { DisableDebugInfo = true; } |
| 962 | void enableDebugInfo() { DisableDebugInfo = false; } |
| 963 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 964 | bool shouldUseFusedARCCalls() { |
| 965 | return CGM.getCodeGenOpts().OptimizationLevel == 0; |
| 966 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 967 | |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 968 | const LangOptions &getLangOpts() const { return CGM.getLangOpts(); } |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 969 | |
Bill Wendling | 285cfd8 | 2011-09-19 20:31:14 +0000 | [diff] [blame] | 970 | /// Returns a pointer to the function's exception object and selector slot, |
| 971 | /// which is assigned in every landing pad. |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 972 | llvm::Value *getExceptionSlot(); |
John McCall | 93c332a | 2011-05-28 21:13:02 +0000 | [diff] [blame] | 973 | llvm::Value *getEHSelectorSlot(); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 974 | |
Bill Wendling | ae27059 | 2011-09-15 18:57:19 +0000 | [diff] [blame] | 975 | /// Returns the contents of the function's exception object and selector |
| 976 | /// slots. |
| 977 | llvm::Value *getExceptionFromSlot(); |
| 978 | llvm::Value *getSelectorFromSlot(); |
| 979 | |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 980 | llvm::Value *getNormalCleanupDestSlot(); |
John McCall | ff8e115 | 2010-07-23 21:56:41 +0000 | [diff] [blame] | 981 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 982 | llvm::BasicBlock *getUnreachableBlock() { |
| 983 | if (!UnreachableBlock) { |
| 984 | UnreachableBlock = createBasicBlock("unreachable"); |
| 985 | new llvm::UnreachableInst(getLLVMContext(), UnreachableBlock); |
| 986 | } |
| 987 | return UnreachableBlock; |
| 988 | } |
| 989 | |
| 990 | llvm::BasicBlock *getInvokeDest() { |
| 991 | if (!EHStack.requiresLandingPad()) return 0; |
| 992 | return getInvokeDestImpl(); |
| 993 | } |
Daniel Dunbar | 9834ffb | 2009-02-23 17:26:39 +0000 | [diff] [blame] | 994 | |
John McCall | 64aa4b3 | 2013-04-16 22:48:15 +0000 | [diff] [blame] | 995 | const TargetInfo &getTarget() const { return Target; } |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 996 | llvm::LLVMContext &getLLVMContext() { return CGM.getLLVMContext(); } |
Owen Anderson | 6924382 | 2009-07-13 04:10:07 +0000 | [diff] [blame] | 997 | |
Daniel Dunbar | 9834ffb | 2009-02-23 17:26:39 +0000 | [diff] [blame] | 998 | //===--------------------------------------------------------------------===// |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 999 | // Cleanups |
| 1000 | //===--------------------------------------------------------------------===// |
| 1001 | |
| 1002 | typedef void Destroyer(CodeGenFunction &CGF, llvm::Value *addr, QualType ty); |
| 1003 | |
John McCall | 2673c68 | 2011-07-11 08:38:19 +0000 | [diff] [blame] | 1004 | void pushIrregularPartialArrayCleanup(llvm::Value *arrayBegin, |
| 1005 | llvm::Value *arrayEndPointer, |
| 1006 | QualType elementType, |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1007 | Destroyer *destroyer); |
John McCall | 2673c68 | 2011-07-11 08:38:19 +0000 | [diff] [blame] | 1008 | void pushRegularPartialArrayCleanup(llvm::Value *arrayBegin, |
| 1009 | llvm::Value *arrayEnd, |
| 1010 | QualType elementType, |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1011 | Destroyer *destroyer); |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1012 | |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 1013 | void pushDestroy(QualType::DestructionKind dtorKind, |
| 1014 | llvm::Value *addr, QualType type); |
John McCall | 074cae0 | 2013-02-01 05:11:40 +0000 | [diff] [blame] | 1015 | void pushEHDestroy(QualType::DestructionKind dtorKind, |
| 1016 | llvm::Value *addr, QualType type); |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1017 | void pushDestroy(CleanupKind kind, llvm::Value *addr, QualType type, |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1018 | Destroyer *destroyer, bool useEHCleanupForArray); |
Richard Smith | 8a07cd3 | 2013-06-12 20:42:33 +0000 | [diff] [blame] | 1019 | void pushLifetimeExtendedDestroy(CleanupKind kind, llvm::Value *addr, |
| 1020 | QualType type, Destroyer *destroyer, |
| 1021 | bool useEHCleanupForArray); |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1022 | void emitDestroy(llvm::Value *addr, QualType type, Destroyer *destroyer, |
John McCall | 2673c68 | 2011-07-11 08:38:19 +0000 | [diff] [blame] | 1023 | bool useEHCleanupForArray); |
David Blaikie | c7971a9 | 2013-08-27 23:57:18 +0000 | [diff] [blame] | 1024 | llvm::Function *generateDestroyHelper(llvm::Constant *addr, QualType type, |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1025 | Destroyer *destroyer, |
David Blaikie | c7971a9 | 2013-08-27 23:57:18 +0000 | [diff] [blame] | 1026 | bool useEHCleanupForArray, |
| 1027 | const VarDecl *VD); |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1028 | void emitArrayDestroy(llvm::Value *begin, llvm::Value *end, |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1029 | QualType type, Destroyer *destroyer, |
John McCall | fbf780a | 2011-07-13 08:09:46 +0000 | [diff] [blame] | 1030 | bool checkZeroLength, bool useEHCleanup); |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1031 | |
Peter Collingbourne | 516bbd4 | 2012-01-26 03:33:36 +0000 | [diff] [blame] | 1032 | Destroyer *getDestroyer(QualType::DestructionKind destructionKind); |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 1033 | |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1034 | /// Determines whether an EH cleanup is required to destroy a type |
| 1035 | /// with the given destruction kind. |
| 1036 | bool needsEHCleanup(QualType::DestructionKind kind) { |
| 1037 | switch (kind) { |
| 1038 | case QualType::DK_none: |
| 1039 | return false; |
| 1040 | case QualType::DK_cxx_destructor: |
| 1041 | case QualType::DK_objc_weak_lifetime: |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 1042 | return getLangOpts().Exceptions; |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1043 | case QualType::DK_objc_strong_lifetime: |
David Blaikie | 4e4d084 | 2012-03-11 07:00:24 +0000 | [diff] [blame] | 1044 | return getLangOpts().Exceptions && |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1045 | CGM.getCodeGenOpts().ObjCAutoRefCountExceptions; |
| 1046 | } |
| 1047 | llvm_unreachable("bad destruction kind"); |
| 1048 | } |
| 1049 | |
John McCall | 9928c48 | 2011-07-12 16:41:08 +0000 | [diff] [blame] | 1050 | CleanupKind getCleanupKind(QualType::DestructionKind kind) { |
| 1051 | return (needsEHCleanup(kind) ? NormalAndEHCleanup : NormalCleanup); |
| 1052 | } |
| 1053 | |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1054 | //===--------------------------------------------------------------------===// |
Daniel Dunbar | 9834ffb | 2009-02-23 17:26:39 +0000 | [diff] [blame] | 1055 | // Objective-C |
| 1056 | //===--------------------------------------------------------------------===// |
| 1057 | |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 1058 | void GenerateObjCMethod(const ObjCMethodDecl *OMD); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 1059 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1060 | void StartObjCMethod(const ObjCMethodDecl *MD, |
Devang Patel | 8d3f897 | 2011-05-19 23:37:41 +0000 | [diff] [blame] | 1061 | const ObjCContainerDecl *CD, |
| 1062 | SourceLocation StartLoc); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 1063 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1064 | /// GenerateObjCGetter - Synthesize an Objective-C property getter function. |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 1065 | void GenerateObjCGetter(ObjCImplementationDecl *IMP, |
| 1066 | const ObjCPropertyImplDecl *PID); |
John McCall | 1e1f487 | 2011-09-13 03:34:09 +0000 | [diff] [blame] | 1067 | void generateObjCGetterBody(const ObjCImplementationDecl *classImpl, |
Fariborz Jahanian | b6e5fe3 | 2012-01-07 18:56:22 +0000 | [diff] [blame] | 1068 | const ObjCPropertyImplDecl *propImpl, |
Fariborz Jahanian | 490a52b | 2012-05-29 19:56:01 +0000 | [diff] [blame] | 1069 | const ObjCMethodDecl *GetterMothodDecl, |
Fariborz Jahanian | b6e5fe3 | 2012-01-07 18:56:22 +0000 | [diff] [blame] | 1070 | llvm::Constant *AtomicHelperFn); |
Fariborz Jahanian | 2846b97 | 2011-02-18 19:15:13 +0000 | [diff] [blame] | 1071 | |
Fariborz Jahanian | 109dfc6 | 2010-04-28 21:28:56 +0000 | [diff] [blame] | 1072 | void GenerateObjCCtorDtorMethod(ObjCImplementationDecl *IMP, |
| 1073 | ObjCMethodDecl *MD, bool ctor); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 1074 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1075 | /// GenerateObjCSetter - Synthesize an Objective-C property setter function |
| 1076 | /// for the given property. |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 1077 | void GenerateObjCSetter(ObjCImplementationDecl *IMP, |
| 1078 | const ObjCPropertyImplDecl *PID); |
John McCall | 71c758d | 2011-09-10 09:17:20 +0000 | [diff] [blame] | 1079 | void generateObjCSetterBody(const ObjCImplementationDecl *classImpl, |
Fariborz Jahanian | cd93b96 | 2012-01-06 22:33:54 +0000 | [diff] [blame] | 1080 | const ObjCPropertyImplDecl *propImpl, |
| 1081 | llvm::Constant *AtomicHelperFn); |
Fariborz Jahanian | 0b2bd47 | 2010-04-13 00:38:05 +0000 | [diff] [blame] | 1082 | bool IndirectObjCSetterArg(const CGFunctionInfo &FI); |
Fariborz Jahanian | 15bd588 | 2010-04-13 18:32:24 +0000 | [diff] [blame] | 1083 | bool IvarTypeWithAggrGCObjects(QualType Ty); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 1084 | |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 1085 | //===--------------------------------------------------------------------===// |
| 1086 | // Block Bits |
| 1087 | //===--------------------------------------------------------------------===// |
| 1088 | |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 1089 | llvm::Value *EmitBlockLiteral(const BlockExpr *); |
John McCall | 1a343eb | 2011-11-10 08:15:53 +0000 | [diff] [blame] | 1090 | llvm::Value *EmitBlockLiteral(const CGBlockInfo &Info); |
| 1091 | static void destroyBlockInfos(CGBlockInfo *info); |
Blaine Garst | 2a7eb28 | 2010-02-23 21:51:17 +0000 | [diff] [blame] | 1092 | llvm::Constant *BuildDescriptorBlockDecl(const BlockExpr *, |
Fariborz Jahanian | 89ecd41 | 2010-08-04 16:57:49 +0000 | [diff] [blame] | 1093 | const CGBlockInfo &Info, |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 1094 | llvm::StructType *, |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1095 | llvm::Constant *BlockVarLayout); |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 1096 | |
Fariborz Jahanian | 564360b | 2010-06-24 00:08:06 +0000 | [diff] [blame] | 1097 | llvm::Function *GenerateBlockFunction(GlobalDecl GD, |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 1098 | const CGBlockInfo &Info, |
Eli Friedman | 64bee65 | 2012-02-25 02:48:22 +0000 | [diff] [blame] | 1099 | const DeclMapTy &ldm, |
| 1100 | bool IsLambdaConversionToBlock); |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 1101 | |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1102 | llvm::Constant *GenerateCopyHelperFunction(const CGBlockInfo &blockInfo); |
| 1103 | llvm::Constant *GenerateDestroyHelperFunction(const CGBlockInfo &blockInfo); |
Fariborz Jahanian | 20abee6 | 2012-01-10 00:37:01 +0000 | [diff] [blame] | 1104 | llvm::Constant *GenerateObjCAtomicSetterCopyHelperFunction( |
| 1105 | const ObjCPropertyImplDecl *PID); |
| 1106 | llvm::Constant *GenerateObjCAtomicGetterCopyHelperFunction( |
| 1107 | const ObjCPropertyImplDecl *PID); |
Eli Friedman | cae40c4 | 2012-02-28 01:08:45 +0000 | [diff] [blame] | 1108 | llvm::Value *EmitBlockCopyAndAutorelease(llvm::Value *Block, QualType Ty); |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1109 | |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1110 | void BuildBlockRelease(llvm::Value *DeclPtr, BlockFieldFlags flags); |
| 1111 | |
John McCall | 5af02db | 2011-03-31 01:59:53 +0000 | [diff] [blame] | 1112 | class AutoVarEmission; |
| 1113 | |
| 1114 | void emitByrefStructureInit(const AutoVarEmission &emission); |
| 1115 | void enterByrefCleanup(const AutoVarEmission &emission); |
| 1116 | |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 1117 | llvm::Value *LoadBlockStruct() { |
| 1118 | assert(BlockPointer && "no block pointer set!"); |
| 1119 | return BlockPointer; |
| 1120 | } |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 1121 | |
John McCall | ea1471e | 2010-05-20 01:18:31 +0000 | [diff] [blame] | 1122 | void AllocateBlockCXXThisPointer(const CXXThisExpr *E); |
John McCall | f4b88a4 | 2012-03-10 09:33:50 +0000 | [diff] [blame] | 1123 | void AllocateBlockDecl(const DeclRefExpr *E); |
John McCall | 6b5a61b | 2011-02-07 10:33:21 +0000 | [diff] [blame] | 1124 | llvm::Value *GetAddrOfBlockDecl(const VarDecl *var, bool ByRef); |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 1125 | llvm::Type *BuildByRefType(const VarDecl *var); |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 1126 | |
John McCall | d26bc76 | 2011-03-09 04:27:21 +0000 | [diff] [blame] | 1127 | void GenerateCode(GlobalDecl GD, llvm::Function *Fn, |
| 1128 | const CGFunctionInfo &FnInfo); |
John McCall | f5ebf9b | 2013-05-03 07:33:41 +0000 | [diff] [blame] | 1129 | void StartFunction(GlobalDecl GD, |
| 1130 | QualType RetTy, |
Daniel Dunbar | 7c08651 | 2008-09-09 23:14:03 +0000 | [diff] [blame] | 1131 | llvm::Function *Fn, |
John McCall | d26bc76 | 2011-03-09 04:27:21 +0000 | [diff] [blame] | 1132 | const CGFunctionInfo &FnInfo, |
Daniel Dunbar | 2284ac9 | 2008-10-18 18:22:23 +0000 | [diff] [blame] | 1133 | const FunctionArgList &Args, |
Tilmann Scheller | 9c6082f | 2011-03-02 21:36:49 +0000 | [diff] [blame] | 1134 | SourceLocation StartLoc); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 1135 | |
John McCall | 9fc6a77 | 2010-02-19 09:25:03 +0000 | [diff] [blame] | 1136 | void EmitConstructorBody(FunctionArgList &Args); |
| 1137 | void EmitDestructorBody(FunctionArgList &Args); |
Lang Hames | 56c00c4 | 2013-02-17 07:22:09 +0000 | [diff] [blame] | 1138 | void emitImplicitAssignmentOperatorBody(FunctionArgList &Args); |
John McCall | 9fc6a77 | 2010-02-19 09:25:03 +0000 | [diff] [blame] | 1139 | void EmitFunctionBody(FunctionArgList &Args); |
John McCall | a355e07 | 2010-02-18 03:17:58 +0000 | [diff] [blame] | 1140 | |
Eli Friedman | 64bee65 | 2012-02-25 02:48:22 +0000 | [diff] [blame] | 1141 | void EmitForwardingCallToLambda(const CXXRecordDecl *Lambda, |
| 1142 | CallArgList &CallArgs); |
Eli Friedman | bd89f8c | 2012-02-16 01:37:33 +0000 | [diff] [blame] | 1143 | void EmitLambdaToBlockPointerBody(FunctionArgList &Args); |
Eli Friedman | 64bee65 | 2012-02-25 02:48:22 +0000 | [diff] [blame] | 1144 | void EmitLambdaBlockInvokeBody(); |
Douglas Gregor | 27dd7d9 | 2012-02-17 03:02:34 +0000 | [diff] [blame] | 1145 | void EmitLambdaDelegatingInvokeBody(const CXXMethodDecl *MD); |
| 1146 | void EmitLambdaStaticInvokeFunction(const CXXMethodDecl *MD); |
Eli Friedman | bd89f8c | 2012-02-16 01:37:33 +0000 | [diff] [blame] | 1147 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1148 | /// EmitReturnBlock - Emit the unified return block, trying to avoid its |
| 1149 | /// emission when possible. |
David Blaikie | 0a0f93c | 2013-02-01 19:09:49 +0000 | [diff] [blame] | 1150 | void EmitReturnBlock(); |
Daniel Dunbar | 1c1d607 | 2009-01-26 23:27:52 +0000 | [diff] [blame] | 1151 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1152 | /// FinishFunction - Complete IR generation of the current function. It is |
| 1153 | /// 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] | 1154 | void FinishFunction(SourceLocation EndLoc=SourceLocation()); |
Daniel Dunbar | 17b708d | 2008-09-09 23:27:19 +0000 | [diff] [blame] | 1155 | |
Anders Carlsson | 519c328 | 2010-03-24 00:39:18 +0000 | [diff] [blame] | 1156 | /// GenerateThunk - Generate a thunk for the given method. |
John McCall | d26bc76 | 2011-03-09 04:27:21 +0000 | [diff] [blame] | 1157 | void GenerateThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, |
| 1158 | GlobalDecl GD, const ThunkInfo &Thunk); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1159 | |
Eli Friedman | 7dcdf5b | 2011-05-06 17:27:27 +0000 | [diff] [blame] | 1160 | void GenerateVarArgsThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, |
| 1161 | GlobalDecl GD, const ThunkInfo &Thunk); |
| 1162 | |
Douglas Gregor | fb8cc25 | 2010-05-05 05:51:00 +0000 | [diff] [blame] | 1163 | void EmitCtorPrologue(const CXXConstructorDecl *CD, CXXCtorType Type, |
| 1164 | FunctionArgList &Args); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1165 | |
Eli Friedman | b74ed08 | 2012-02-14 02:31:03 +0000 | [diff] [blame] | 1166 | void EmitInitializerForField(FieldDecl *Field, LValue LHS, Expr *Init, |
| 1167 | ArrayRef<VarDecl *> ArrayIndexes); |
| 1168 | |
Anders Carlsson | d103f9f | 2010-03-28 19:40:00 +0000 | [diff] [blame] | 1169 | /// InitializeVTablePointer - Initialize the vtable pointer of the given |
| 1170 | /// subobject. |
| 1171 | /// |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1172 | void InitializeVTablePointer(BaseSubobject Base, |
Anders Carlsson | b3b772e | 2010-04-20 05:22:15 +0000 | [diff] [blame] | 1173 | const CXXRecordDecl *NearestVBase, |
Ken Dyck | d6fb21f | 2011-03-23 01:04:18 +0000 | [diff] [blame] | 1174 | CharUnits OffsetFromNearestVBase, |
Anders Carlsson | d103f9f | 2010-03-28 19:40:00 +0000 | [diff] [blame] | 1175 | const CXXRecordDecl *VTableClass); |
| 1176 | |
| 1177 | typedef llvm::SmallPtrSet<const CXXRecordDecl *, 4> VisitedVirtualBasesSetTy; |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1178 | void InitializeVTablePointers(BaseSubobject Base, |
Anders Carlsson | b3b772e | 2010-04-20 05:22:15 +0000 | [diff] [blame] | 1179 | const CXXRecordDecl *NearestVBase, |
Ken Dyck | d6fb21f | 2011-03-23 01:04:18 +0000 | [diff] [blame] | 1180 | CharUnits OffsetFromNearestVBase, |
Anders Carlsson | 603d6d1 | 2010-03-28 21:07:49 +0000 | [diff] [blame] | 1181 | bool BaseIsNonVirtualPrimaryBase, |
Anders Carlsson | 603d6d1 | 2010-03-28 21:07:49 +0000 | [diff] [blame] | 1182 | const CXXRecordDecl *VTableClass, |
| 1183 | VisitedVirtualBasesSetTy& VBases); |
Eli Friedman | 77a259c | 2009-12-08 06:46:18 +0000 | [diff] [blame] | 1184 | |
Anders Carlsson | 603d6d1 | 2010-03-28 21:07:49 +0000 | [diff] [blame] | 1185 | void InitializeVTablePointers(const CXXRecordDecl *ClassDecl); |
Anders Carlsson | d103f9f | 2010-03-28 19:40:00 +0000 | [diff] [blame] | 1186 | |
Dan Gohman | 043fb9a | 2010-10-26 18:44:08 +0000 | [diff] [blame] | 1187 | /// GetVTablePtr - Return the Value of the vtable pointer member pointed |
| 1188 | /// to by This. |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 1189 | llvm::Value *GetVTablePtr(llvm::Value *This, llvm::Type *Ty); |
Anders Carlsson | d103f9f | 2010-03-28 19:40:00 +0000 | [diff] [blame] | 1190 | |
Benjamin Kramer | 9581ed0 | 2013-08-25 22:46:27 +0000 | [diff] [blame] | 1191 | |
| 1192 | /// CanDevirtualizeMemberFunctionCalls - Checks whether virtual calls on given |
| 1193 | /// expr can be devirtualized. |
| 1194 | bool CanDevirtualizeMemberFunctionCall(const Expr *Base, |
| 1195 | const CXXMethodDecl *MD); |
| 1196 | |
John McCall | 50da2ca | 2010-07-21 05:30:47 +0000 | [diff] [blame] | 1197 | /// EnterDtorCleanups - Enter the cleanups necessary to complete the |
| 1198 | /// given phase of destruction for a destructor. The end result |
| 1199 | /// should call destructors on members and base classes in reverse |
| 1200 | /// order of their construction. |
| 1201 | void EnterDtorCleanups(const CXXDestructorDecl *Dtor, CXXDtorType Type); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1202 | |
Chris Lattner | 7255a2d | 2010-06-22 00:03:40 +0000 | [diff] [blame] | 1203 | /// ShouldInstrumentFunction - Return true if the current function should be |
| 1204 | /// instrumented with __cyg_profile_func_* calls |
| 1205 | bool ShouldInstrumentFunction(); |
| 1206 | |
| 1207 | /// EmitFunctionInstrumentation - Emit LLVM code to call the specified |
| 1208 | /// instrumentation function with the current function and the call site, if |
| 1209 | /// function instrumentation is enabled. |
| 1210 | void EmitFunctionInstrumentation(const char *Fn); |
| 1211 | |
Roman Divacky | be4c870 | 2011-02-10 16:52:03 +0000 | [diff] [blame] | 1212 | /// EmitMCountInstrumentation - Emit call to .mcount. |
| 1213 | void EmitMCountInstrumentation(); |
| 1214 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1215 | /// EmitFunctionProlog - Emit the target specific LLVM code to load the |
| 1216 | /// arguments for the given function. This is also responsible for naming the |
| 1217 | /// LLVM function arguments. |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 1218 | void EmitFunctionProlog(const CGFunctionInfo &FI, |
| 1219 | llvm::Function *Fn, |
Daniel Dunbar | 17b708d | 2008-09-09 23:27:19 +0000 | [diff] [blame] | 1220 | const FunctionArgList &Args); |
| 1221 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1222 | /// EmitFunctionEpilog - Emit the target specific LLVM code to return the |
| 1223 | /// given temporary. |
Adrian Prantl | fa6b079 | 2013-05-02 17:30:20 +0000 | [diff] [blame] | 1224 | void EmitFunctionEpilog(const CGFunctionInfo &FI, bool EmitRetDbgLoc); |
Daniel Dunbar | 17b708d | 2008-09-09 23:27:19 +0000 | [diff] [blame] | 1225 | |
Mike Stump | cce3d4f | 2009-12-07 23:38:24 +0000 | [diff] [blame] | 1226 | /// EmitStartEHSpec - Emit the start of the exception spec. |
| 1227 | void EmitStartEHSpec(const Decl *D); |
| 1228 | |
| 1229 | /// EmitEndEHSpec - Emit the end of the exception spec. |
| 1230 | void EmitEndEHSpec(const Decl *D); |
| 1231 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1232 | /// getTerminateLandingPad - Return a landing pad that just calls terminate. |
| 1233 | llvm::BasicBlock *getTerminateLandingPad(); |
| 1234 | |
| 1235 | /// getTerminateHandler - Return a handler (not a landing pad, just |
| 1236 | /// a catch handler) that just calls terminate. This is used when |
| 1237 | /// a terminate scope encloses a try. |
Mike Stump | 9b39c51 | 2009-12-09 22:59:31 +0000 | [diff] [blame] | 1238 | llvm::BasicBlock *getTerminateHandler(); |
| 1239 | |
Chris Lattner | 9cbe4f0 | 2011-07-09 17:41:47 +0000 | [diff] [blame] | 1240 | llvm::Type *ConvertTypeForMem(QualType T); |
| 1241 | llvm::Type *ConvertType(QualType T); |
| 1242 | llvm::Type *ConvertType(const TypeDecl *T) { |
John McCall | bff225e | 2010-02-16 04:15:37 +0000 | [diff] [blame] | 1243 | return ConvertType(getContext().getTypeDeclType(T)); |
| 1244 | } |
Chris Lattner | c8aa5f1 | 2008-04-04 04:07:35 +0000 | [diff] [blame] | 1245 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1246 | /// LoadObjCSelf - Load the value of self. This function is only valid while |
| 1247 | /// generating code for an Objective-C method. |
Chris Lattner | c8aa5f1 | 2008-04-04 04:07:35 +0000 | [diff] [blame] | 1248 | llvm::Value *LoadObjCSelf(); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1249 | |
| 1250 | /// TypeOfSelfObject - Return type of object that this self represents. |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 1251 | QualType TypeOfSelfObject(); |
Chris Lattner | 4111024 | 2008-06-17 18:05:57 +0000 | [diff] [blame] | 1252 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1253 | /// hasAggregateLLVMType - Return true if the specified AST type will map into |
| 1254 | /// an aggregate LLVM type or is void. |
John McCall | 9d232c8 | 2013-03-07 21:37:08 +0000 | [diff] [blame] | 1255 | static TypeEvaluationKind getEvaluationKind(QualType T); |
| 1256 | |
| 1257 | static bool hasScalarEvaluationKind(QualType T) { |
| 1258 | return getEvaluationKind(T) == TEK_Scalar; |
| 1259 | } |
| 1260 | |
| 1261 | static bool hasAggregateEvaluationKind(QualType T) { |
| 1262 | return getEvaluationKind(T) == TEK_Aggregate; |
| 1263 | } |
Daniel Dunbar | 55e8742 | 2008-11-11 02:29:29 +0000 | [diff] [blame] | 1264 | |
| 1265 | /// createBasicBlock - Create an LLVM basic block. |
Richard Smith | 4def70d | 2012-10-09 19:52:38 +0000 | [diff] [blame] | 1266 | llvm::BasicBlock *createBasicBlock(const Twine &name = "", |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1267 | llvm::Function *parent = 0, |
| 1268 | llvm::BasicBlock *before = 0) { |
Daniel Dunbar | 29ea672 | 2008-11-12 00:01:12 +0000 | [diff] [blame] | 1269 | #ifdef NDEBUG |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1270 | return llvm::BasicBlock::Create(getLLVMContext(), "", parent, before); |
Daniel Dunbar | 29ea672 | 2008-11-12 00:01:12 +0000 | [diff] [blame] | 1271 | #else |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1272 | return llvm::BasicBlock::Create(getLLVMContext(), name, parent, before); |
Daniel Dunbar | 29ea672 | 2008-11-12 00:01:12 +0000 | [diff] [blame] | 1273 | #endif |
Daniel Dunbar | 55e8742 | 2008-11-11 02:29:29 +0000 | [diff] [blame] | 1274 | } |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1275 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1276 | /// getBasicBlockForLabel - Return the LLVM basicblock that the specified |
| 1277 | /// label maps to. |
Chris Lattner | ad8dcf4 | 2011-02-17 07:39:24 +0000 | [diff] [blame] | 1278 | JumpDest getJumpDestForLabel(const LabelDecl *S); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1279 | |
Mike Stump | f71d232 | 2009-11-30 20:08:49 +0000 | [diff] [blame] | 1280 | /// SimplifyForwardingBlocks - If the given basic block is only a branch to |
| 1281 | /// another basic block, simplify it. This assumes that no other code could |
| 1282 | /// potentially reference the basic block. |
Daniel Dunbar | aa5bd87 | 2009-04-01 04:37:47 +0000 | [diff] [blame] | 1283 | void SimplifyForwardingBlocks(llvm::BasicBlock *BB); |
| 1284 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1285 | /// EmitBlock - Emit the given block \arg BB and set it as the insert point, |
| 1286 | /// adding a fall-through branch from the current insert block if |
| 1287 | /// necessary. It is legal to call this function even if there is no current |
| 1288 | /// insertion point. |
Daniel Dunbar | a0c21a8 | 2008-11-13 01:24:05 +0000 | [diff] [blame] | 1289 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1290 | /// IsFinished - If true, indicates that the caller has finished emitting |
| 1291 | /// branches to the given block and does not expect to emit code into it. This |
| 1292 | /// means the block can be ignored if it is unreachable. |
Daniel Dunbar | a0c21a8 | 2008-11-13 01:24:05 +0000 | [diff] [blame] | 1293 | void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false); |
Daniel Dunbar | 824e3bd | 2008-11-11 04:34:23 +0000 | [diff] [blame] | 1294 | |
John McCall | 777d6e5 | 2011-08-11 02:22:43 +0000 | [diff] [blame] | 1295 | /// EmitBlockAfterUses - Emit the given block somewhere hopefully |
| 1296 | /// near its uses, and leave the insertion point in it. |
| 1297 | void EmitBlockAfterUses(llvm::BasicBlock *BB); |
| 1298 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1299 | /// EmitBranch - Emit a branch to the specified basic block from the current |
| 1300 | /// insert block, taking care to avoid creation of branches from dummy |
| 1301 | /// blocks. It is legal to call this function even if there is no current |
| 1302 | /// insertion point. |
Daniel Dunbar | 5e08ad3 | 2008-11-11 22:06:59 +0000 | [diff] [blame] | 1303 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1304 | /// This function clears the current insertion point. The caller should follow |
| 1305 | /// calls to this function with calls to Emit*Block prior to generation new |
| 1306 | /// code. |
Daniel Dunbar | d57a871 | 2008-11-11 09:41:28 +0000 | [diff] [blame] | 1307 | void EmitBranch(llvm::BasicBlock *Block); |
| 1308 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1309 | /// HaveInsertPoint - True if an insertion point is defined. If not, this |
| 1310 | /// indicates that the current code being emitted is unreachable. |
| 1311 | bool HaveInsertPoint() const { |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 1312 | return Builder.GetInsertBlock() != 0; |
| 1313 | } |
| 1314 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1315 | /// EnsureInsertPoint - Ensure that an insertion point is defined so that |
| 1316 | /// emitted IR has a place to go. Note that by definition, if this function |
| 1317 | /// creates a block then that block is unreachable; callers may do better to |
| 1318 | /// detect when no insertion point is defined and simply skip IR generation. |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 1319 | void EnsureInsertPoint() { |
| 1320 | if (!HaveInsertPoint()) |
| 1321 | EmitBlock(createBasicBlock()); |
| 1322 | } |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1323 | |
Daniel Dunbar | 488e993 | 2008-08-16 00:56:44 +0000 | [diff] [blame] | 1324 | /// ErrorUnsupported - Print out an error that codegen doesn't support the |
Chris Lattner | dc5e826 | 2007-12-02 01:43:38 +0000 | [diff] [blame] | 1325 | /// specified stmt yet. |
David Blaikie | 0a1c862 | 2013-08-19 21:02:26 +0000 | [diff] [blame] | 1326 | void ErrorUnsupported(const Stmt *S, const char *Type); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1327 | |
| 1328 | //===--------------------------------------------------------------------===// |
| 1329 | // Helpers |
| 1330 | //===--------------------------------------------------------------------===// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1331 | |
Eli Friedman | 6da2c71 | 2011-12-03 04:14:32 +0000 | [diff] [blame] | 1332 | LValue MakeAddrLValue(llvm::Value *V, QualType T, |
| 1333 | CharUnits Alignment = CharUnits()) { |
Dan Gohman | 3d5aff5 | 2010-10-14 23:06:10 +0000 | [diff] [blame] | 1334 | return LValue::MakeAddr(V, T, Alignment, getContext(), |
| 1335 | CGM.getTBAAInfo(T)); |
Daniel Dunbar | 5cf8bfe | 2010-08-21 02:53:44 +0000 | [diff] [blame] | 1336 | } |
John McCall | e0c1168 | 2012-07-02 23:58:38 +0000 | [diff] [blame] | 1337 | |
Eli Friedman | 2f77b3d | 2011-11-16 00:42:57 +0000 | [diff] [blame] | 1338 | LValue MakeNaturalAlignAddrLValue(llvm::Value *V, QualType T) { |
Eli Friedman | 6da2c71 | 2011-12-03 04:14:32 +0000 | [diff] [blame] | 1339 | CharUnits Alignment; |
| 1340 | if (!T->isIncompleteType()) |
| 1341 | Alignment = getContext().getTypeAlignInChars(T); |
Eli Friedman | 2f77b3d | 2011-11-16 00:42:57 +0000 | [diff] [blame] | 1342 | return LValue::MakeAddr(V, T, Alignment, getContext(), |
| 1343 | CGM.getTBAAInfo(T)); |
| 1344 | } |
Daniel Dunbar | 5cf8bfe | 2010-08-21 02:53:44 +0000 | [diff] [blame] | 1345 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1346 | /// CreateTempAlloca - This creates a alloca and inserts it into the entry |
Daniel Dunbar | 195337d | 2010-02-09 02:48:28 +0000 | [diff] [blame] | 1347 | /// block. The caller is responsible for setting an appropriate alignment on |
| 1348 | /// the alloca. |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 1349 | llvm::AllocaInst *CreateTempAlloca(llvm::Type *Ty, |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 1350 | const Twine &Name = "tmp"); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1351 | |
John McCall | ac41816 | 2010-04-22 01:10:34 +0000 | [diff] [blame] | 1352 | /// InitTempAlloca - Provide an initial value for the given alloca. |
| 1353 | void InitTempAlloca(llvm::AllocaInst *Alloca, llvm::Value *Value); |
| 1354 | |
Daniel Dunbar | 9bd4da2 | 2010-02-16 19:44:13 +0000 | [diff] [blame] | 1355 | /// CreateIRTemp - Create a temporary IR object of the given type, with |
| 1356 | /// appropriate alignment. This routine should only be used when an temporary |
| 1357 | /// value needs to be stored into an alloca (for example, to avoid explicit |
| 1358 | /// PHI construction), but the type is the IR type, not the type appropriate |
| 1359 | /// for storing in memory. |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 1360 | llvm::AllocaInst *CreateIRTemp(QualType T, const Twine &Name = "tmp"); |
Daniel Dunbar | 9bd4da2 | 2010-02-16 19:44:13 +0000 | [diff] [blame] | 1361 | |
Daniel Dunbar | 195337d | 2010-02-09 02:48:28 +0000 | [diff] [blame] | 1362 | /// CreateMemTemp - Create a temporary memory object of the given type, with |
| 1363 | /// appropriate alignment. |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 1364 | llvm::AllocaInst *CreateMemTemp(QualType T, const Twine &Name = "tmp"); |
Daniel Dunbar | 195337d | 2010-02-09 02:48:28 +0000 | [diff] [blame] | 1365 | |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 1366 | /// CreateAggTemp - Create a temporary memory object for the given |
| 1367 | /// aggregate type. |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 1368 | AggValueSlot CreateAggTemp(QualType T, const Twine &Name = "tmp") { |
Eli Friedman | d7722d9 | 2011-12-03 02:13:40 +0000 | [diff] [blame] | 1369 | CharUnits Alignment = getContext().getTypeAlignInChars(T); |
Eli Friedman | f394078 | 2011-12-03 00:54:26 +0000 | [diff] [blame] | 1370 | return AggValueSlot::forAddr(CreateMemTemp(T, Name), Alignment, |
| 1371 | T.getQualifiers(), |
John McCall | 7c2349b | 2011-08-25 20:40:09 +0000 | [diff] [blame] | 1372 | AggValueSlot::IsNotDestructed, |
John McCall | 410ffb2 | 2011-08-25 23:04:34 +0000 | [diff] [blame] | 1373 | AggValueSlot::DoesNotNeedGCBarriers, |
Chad Rosier | 649b4a1 | 2012-03-29 17:37:10 +0000 | [diff] [blame] | 1374 | AggValueSlot::IsNotAliased); |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 1375 | } |
| 1376 | |
John McCall | d16c2cf | 2011-02-08 08:22:06 +0000 | [diff] [blame] | 1377 | /// Emit a cast to void* in the appropriate address space. |
| 1378 | llvm::Value *EmitCastToVoidPtr(llvm::Value *value); |
| 1379 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1380 | /// EvaluateExprAsBool - Perform the usual unary conversions on the specified |
| 1381 | /// expression and compare the result against zero, returning an Int1Ty value. |
| 1382 | llvm::Value *EvaluateExprAsBool(const Expr *E); |
| 1383 | |
John McCall | 2a41637 | 2010-12-05 02:00:02 +0000 | [diff] [blame] | 1384 | /// EmitIgnoredExpr - Emit an expression in a context which ignores the result. |
| 1385 | void EmitIgnoredExpr(const Expr *E); |
| 1386 | |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 1387 | /// EmitAnyExpr - Emit code to compute the specified expression which can have |
| 1388 | /// any type. The result is returned as an RValue struct. If this is an |
| 1389 | /// aggregate expression, the aggloc/agglocvolatile arguments indicate where |
| 1390 | /// the result should be returned. |
Mike Stump | 49d1cd5 | 2009-05-26 22:03:21 +0000 | [diff] [blame] | 1391 | /// |
Dmitri Gribenko | 70517ca | 2012-08-23 17:58:28 +0000 | [diff] [blame] | 1392 | /// \param ignoreResult True if the resulting value isn't used. |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 1393 | RValue EmitAnyExpr(const Expr *E, |
John McCall | e0c1168 | 2012-07-02 23:58:38 +0000 | [diff] [blame] | 1394 | AggValueSlot aggSlot = AggValueSlot::ignored(), |
| 1395 | bool ignoreResult = false); |
Devang Patel | d9363c3 | 2007-09-28 21:49:18 +0000 | [diff] [blame] | 1396 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1397 | // EmitVAListRef - Emit a "reference" to a va_list; this is either the address |
| 1398 | // 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] | 1399 | llvm::Value *EmitVAListRef(const Expr *E); |
| 1400 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1401 | /// EmitAnyExprToTemp - Similary to EmitAnyExpr(), however, the result will |
| 1402 | /// always be accessible even if no aggregate location is provided. |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 1403 | RValue EmitAnyExprToTemp(const Expr *E); |
Daniel Dunbar | 46f45b9 | 2008-09-09 01:06:48 +0000 | [diff] [blame] | 1404 | |
John McCall | 60d3365 | 2011-03-08 09:11:50 +0000 | [diff] [blame] | 1405 | /// EmitAnyExprToMem - Emits the code necessary to evaluate an |
Chad Rosier | 649b4a1 | 2012-03-29 17:37:10 +0000 | [diff] [blame] | 1406 | /// arbitrary expression into the given memory location. |
John McCall | 3d3ec1c | 2010-04-21 10:05:39 +0000 | [diff] [blame] | 1407 | void EmitAnyExprToMem(const Expr *E, llvm::Value *Location, |
Chad Rosier | 649b4a1 | 2012-03-29 17:37:10 +0000 | [diff] [blame] | 1408 | Qualifiers Quals, bool IsInitializer); |
John McCall | 3d3ec1c | 2010-04-21 10:05:39 +0000 | [diff] [blame] | 1409 | |
John McCall | 60d3365 | 2011-03-08 09:11:50 +0000 | [diff] [blame] | 1410 | /// EmitExprAsInit - Emits the code necessary to initialize a |
| 1411 | /// location in memory with the given initializer. |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 1412 | void EmitExprAsInit(const Expr *init, const ValueDecl *D, |
John McCall | a07398e | 2011-06-16 04:16:24 +0000 | [diff] [blame] | 1413 | LValue lvalue, bool capturedByInit); |
John McCall | 60d3365 | 2011-03-08 09:11:50 +0000 | [diff] [blame] | 1414 | |
Fariborz Jahanian | 3ac83d6 | 2013-01-25 23:57:05 +0000 | [diff] [blame] | 1415 | /// hasVolatileMember - returns true if aggregate type has a volatile |
| 1416 | /// member. |
| 1417 | bool hasVolatileMember(QualType T) { |
| 1418 | if (const RecordType *RT = T->getAs<RecordType>()) { |
| 1419 | const RecordDecl *RD = cast<RecordDecl>(RT->getDecl()); |
| 1420 | return RD->hasVolatileMember(); |
| 1421 | } |
| 1422 | return false; |
| 1423 | } |
Arnaud A. de Grandmaison | 8fcbb8d | 2013-02-05 09:06:17 +0000 | [diff] [blame] | 1424 | /// EmitAggregateCopy - Emit an aggregate assignment. |
Benjamin Kramer | 6cacae8 | 2012-09-30 12:43:37 +0000 | [diff] [blame] | 1425 | /// |
| 1426 | /// The difference to EmitAggregateCopy is that tail padding is not copied. |
| 1427 | /// This is required for correctness when assigning non-POD structures in C++. |
| 1428 | void EmitAggregateAssign(llvm::Value *DestPtr, llvm::Value *SrcPtr, |
Fariborz Jahanian | 3ac83d6 | 2013-01-25 23:57:05 +0000 | [diff] [blame] | 1429 | QualType EltTy) { |
| 1430 | bool IsVolatile = hasVolatileMember(EltTy); |
| 1431 | EmitAggregateCopy(DestPtr, SrcPtr, EltTy, IsVolatile, CharUnits::Zero(), |
| 1432 | true); |
Benjamin Kramer | 6cacae8 | 2012-09-30 12:43:37 +0000 | [diff] [blame] | 1433 | } |
| 1434 | |
Arnaud A. de Grandmaison | 8fcbb8d | 2013-02-05 09:06:17 +0000 | [diff] [blame] | 1435 | /// EmitAggregateCopy - Emit an aggregate copy. |
Mike Stump | 27fe2e6 | 2009-05-23 22:29:41 +0000 | [diff] [blame] | 1436 | /// |
Sylvestre Ledru | f3477c1 | 2012-09-27 10:16:10 +0000 | [diff] [blame] | 1437 | /// \param isVolatile - True iff either the source or the destination is |
Mike Stump | 27fe2e6 | 2009-05-23 22:29:41 +0000 | [diff] [blame] | 1438 | /// volatile. |
Benjamin Kramer | 6cacae8 | 2012-09-30 12:43:37 +0000 | [diff] [blame] | 1439 | /// \param isAssignment - If false, allow padding to be copied. This often |
| 1440 | /// yields more efficient. |
Daniel Dunbar | 7482d12 | 2008-09-09 20:49:46 +0000 | [diff] [blame] | 1441 | void EmitAggregateCopy(llvm::Value *DestPtr, llvm::Value *SrcPtr, |
Eli Friedman | bd7d828 | 2011-12-05 22:23:28 +0000 | [diff] [blame] | 1442 | QualType EltTy, bool isVolatile=false, |
Benjamin Kramer | 6cacae8 | 2012-09-30 12:43:37 +0000 | [diff] [blame] | 1443 | CharUnits Alignment = CharUnits::Zero(), |
| 1444 | bool isAssignment = false); |
Daniel Dunbar | 7482d12 | 2008-09-09 20:49:46 +0000 | [diff] [blame] | 1445 | |
Devang Patel | 51b09f2 | 2007-10-04 23:45:31 +0000 | [diff] [blame] | 1446 | /// StartBlock - Start new block named N. If insert block is a dummy block |
| 1447 | /// then reuse it. |
| 1448 | void StartBlock(const char *N); |
| 1449 | |
Anders Carlsson | dde0a94 | 2008-09-11 09:15:33 +0000 | [diff] [blame] | 1450 | /// GetAddrOfLocalVar - Return the address of a local variable. |
John McCall | 4c40d98 | 2010-08-31 07:33:07 +0000 | [diff] [blame] | 1451 | llvm::Value *GetAddrOfLocalVar(const VarDecl *VD) { |
| 1452 | llvm::Value *Res = LocalDeclMap[VD]; |
| 1453 | assert(Res && "Invalid argument to GetAddrOfLocalVar(), no decl!"); |
| 1454 | return Res; |
| 1455 | } |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1456 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1457 | /// getOpaqueLValueMapping - Given an opaque value expression (which |
| 1458 | /// must be mapped to an l-value), return its mapping. |
| 1459 | const LValue &getOpaqueLValueMapping(const OpaqueValueExpr *e) { |
| 1460 | assert(OpaqueValueMapping::shouldBindAsLValue(e)); |
| 1461 | |
| 1462 | llvm::DenseMap<const OpaqueValueExpr*,LValue>::iterator |
| 1463 | it = OpaqueLValues.find(e); |
| 1464 | assert(it != OpaqueLValues.end() && "no mapping for opaque value!"); |
| 1465 | return it->second; |
| 1466 | } |
| 1467 | |
| 1468 | /// getOpaqueRValueMapping - Given an opaque value expression (which |
| 1469 | /// must be mapped to an r-value), return its mapping. |
| 1470 | const RValue &getOpaqueRValueMapping(const OpaqueValueExpr *e) { |
| 1471 | assert(!OpaqueValueMapping::shouldBindAsLValue(e)); |
| 1472 | |
| 1473 | llvm::DenseMap<const OpaqueValueExpr*,RValue>::iterator |
| 1474 | it = OpaqueRValues.find(e); |
| 1475 | assert(it != OpaqueRValues.end() && "no mapping for opaque value!"); |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1476 | return it->second; |
| 1477 | } |
| 1478 | |
Dan Gohman | 4f8d123 | 2008-05-22 00:50:06 +0000 | [diff] [blame] | 1479 | /// getAccessedFieldNo - Given an encoded value and a result number, return |
| 1480 | /// the input field number being accessed. |
| 1481 | static unsigned getAccessedFieldNo(unsigned Idx, const llvm::Constant *Elts); |
| 1482 | |
Chris Lattner | ad8dcf4 | 2011-02-17 07:39:24 +0000 | [diff] [blame] | 1483 | llvm::BlockAddress *GetAddrOfLabel(const LabelDecl *L); |
Chris Lattner | 3d00fdc | 2009-10-13 06:55:33 +0000 | [diff] [blame] | 1484 | llvm::BasicBlock *GetIndirectGotoBlock(); |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 1485 | |
Anders Carlsson | 1884eb0 | 2010-05-22 17:35:42 +0000 | [diff] [blame] | 1486 | /// EmitNullInitialization - Generate code to set a value of the given type to |
| 1487 | /// null, If the type contains data member pointers, they will be initialized |
| 1488 | /// to -1 in accordance with the Itanium C++ ABI. |
| 1489 | void EmitNullInitialization(llvm::Value *DestPtr, QualType Ty); |
Anders Carlsson | ddf7cac | 2008-11-04 05:30:00 +0000 | [diff] [blame] | 1490 | |
| 1491 | // EmitVAArg - Generate code to get an argument from the passed in pointer |
| 1492 | // and update it accordingly. The return value is a pointer to the argument. |
| 1493 | // 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] | 1494 | // instruction in LLVM instead once it works well enough. |
Anders Carlsson | ddf7cac | 2008-11-04 05:30:00 +0000 | [diff] [blame] | 1495 | llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty); |
Anders Carlsson | f666b77 | 2008-12-20 20:27:15 +0000 | [diff] [blame] | 1496 | |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1497 | /// emitArrayLength - Compute the length of an array, even if it's a |
| 1498 | /// VLA, and drill down to the base element type. |
| 1499 | llvm::Value *emitArrayLength(const ArrayType *arrayType, |
| 1500 | QualType &baseType, |
| 1501 | llvm::Value *&addr); |
| 1502 | |
John McCall | bc8d40d | 2011-06-24 21:55:10 +0000 | [diff] [blame] | 1503 | /// EmitVLASize - Capture all the sizes for the VLA expressions in |
| 1504 | /// the given variably-modified type and store them in the VLASizeMap. |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 1505 | /// |
| 1506 | /// This function can be called with a null (unreachable) insert point. |
John McCall | bc8d40d | 2011-06-24 21:55:10 +0000 | [diff] [blame] | 1507 | void EmitVariablyModifiedType(QualType Ty); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1508 | |
John McCall | bc8d40d | 2011-06-24 21:55:10 +0000 | [diff] [blame] | 1509 | /// getVLASize - Returns an LLVM value that corresponds to the size, |
| 1510 | /// in non-variably-sized elements, of a variable length array type, |
| 1511 | /// plus that largest non-variably-sized element type. Assumes that |
| 1512 | /// the type has already been emitted with EmitVariablyModifiedType. |
| 1513 | std::pair<llvm::Value*,QualType> getVLASize(const VariableArrayType *vla); |
| 1514 | std::pair<llvm::Value*,QualType> getVLASize(QualType vla); |
Anders Carlsson | dcc90d8 | 2008-12-12 07:19:02 +0000 | [diff] [blame] | 1515 | |
Anders Carlsson | 5f4307b | 2009-04-14 16:58:56 +0000 | [diff] [blame] | 1516 | /// LoadCXXThis - Load the value of 'this'. This function is only valid while |
| 1517 | /// generating code for an C++ member function. |
John McCall | 2504941 | 2010-02-16 22:04:33 +0000 | [diff] [blame] | 1518 | llvm::Value *LoadCXXThis() { |
| 1519 | assert(CXXThisValue && "no 'this' value for this function"); |
| 1520 | return CXXThisValue; |
| 1521 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1522 | |
Anders Carlsson | c997d42 | 2010-01-02 01:01:18 +0000 | [diff] [blame] | 1523 | /// LoadCXXVTT - Load the VTT parameter to base constructors/destructors have |
| 1524 | /// virtual bases. |
Timur Iskhodzhanov | 59660c2 | 2013-02-13 08:37:51 +0000 | [diff] [blame] | 1525 | // FIXME: Every place that calls LoadCXXVTT is something |
| 1526 | // that needs to be abstracted properly. |
John McCall | 2504941 | 2010-02-16 22:04:33 +0000 | [diff] [blame] | 1527 | llvm::Value *LoadCXXVTT() { |
Timur Iskhodzhanov | 59660c2 | 2013-02-13 08:37:51 +0000 | [diff] [blame] | 1528 | assert(CXXStructorImplicitParamValue && "no VTT value for this function"); |
| 1529 | return CXXStructorImplicitParamValue; |
| 1530 | } |
| 1531 | |
| 1532 | /// LoadCXXStructorImplicitParam - Load the implicit parameter |
| 1533 | /// for a constructor/destructor. |
| 1534 | llvm::Value *LoadCXXStructorImplicitParam() { |
| 1535 | assert(CXXStructorImplicitParamValue && |
| 1536 | "no implicit argument value for this function"); |
| 1537 | return CXXStructorImplicitParamValue; |
John McCall | 2504941 | 2010-02-16 22:04:33 +0000 | [diff] [blame] | 1538 | } |
John McCall | bff225e | 2010-02-16 04:15:37 +0000 | [diff] [blame] | 1539 | |
| 1540 | /// GetAddressOfBaseOfCompleteClass - Convert the given pointer to a |
Anders Carlsson | 8561a86 | 2010-04-24 23:01:49 +0000 | [diff] [blame] | 1541 | /// complete class to the given direct base. |
| 1542 | llvm::Value * |
| 1543 | GetAddressOfDirectBaseInCompleteClass(llvm::Value *Value, |
| 1544 | const CXXRecordDecl *Derived, |
| 1545 | const CXXRecordDecl *Base, |
| 1546 | bool BaseIsVirtual); |
Anders Carlsson | a88ad56 | 2010-04-24 21:51:08 +0000 | [diff] [blame] | 1547 | |
Mike Stump | f71d232 | 2009-11-30 20:08:49 +0000 | [diff] [blame] | 1548 | /// GetAddressOfBaseClass - This function will add the necessary delta to the |
| 1549 | /// load of 'this' and returns address of the base class. |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1550 | llvm::Value *GetAddressOfBaseClass(llvm::Value *Value, |
Anders Carlsson | 8561a86 | 2010-04-24 23:01:49 +0000 | [diff] [blame] | 1551 | const CXXRecordDecl *Derived, |
John McCall | f871d0c | 2010-08-07 06:22:56 +0000 | [diff] [blame] | 1552 | CastExpr::path_const_iterator PathBegin, |
| 1553 | CastExpr::path_const_iterator PathEnd, |
Anders Carlsson | 34a2d38 | 2010-04-24 21:06:20 +0000 | [diff] [blame] | 1554 | bool NullCheckValue); |
| 1555 | |
Anders Carlsson | a3697c9 | 2009-11-23 17:57:54 +0000 | [diff] [blame] | 1556 | llvm::Value *GetAddressOfDerivedClass(llvm::Value *Value, |
Anders Carlsson | 8561a86 | 2010-04-24 23:01:49 +0000 | [diff] [blame] | 1557 | const CXXRecordDecl *Derived, |
John McCall | f871d0c | 2010-08-07 06:22:56 +0000 | [diff] [blame] | 1558 | CastExpr::path_const_iterator PathBegin, |
| 1559 | CastExpr::path_const_iterator PathEnd, |
Anders Carlsson | a3697c9 | 2009-11-23 17:57:54 +0000 | [diff] [blame] | 1560 | bool NullCheckValue); |
| 1561 | |
Timur Iskhodzhanov | 1d4fff5 | 2013-02-27 13:46:31 +0000 | [diff] [blame] | 1562 | /// GetVTTParameter - Return the VTT parameter that should be passed to a |
| 1563 | /// base constructor/destructor with virtual bases. |
| 1564 | /// FIXME: VTTs are Itanium ABI-specific, so the definition should move |
| 1565 | /// to ItaniumCXXABI.cpp together with all the references to VTT. |
| 1566 | llvm::Value *GetVTTParameter(GlobalDecl GD, bool ForVirtualBase, |
| 1567 | bool Delegating); |
| 1568 | |
John McCall | c0bf462 | 2010-02-23 00:48:20 +0000 | [diff] [blame] | 1569 | void EmitDelegateCXXConstructorCall(const CXXConstructorDecl *Ctor, |
| 1570 | CXXCtorType CtorType, |
| 1571 | const FunctionArgList &Args); |
Sean Hunt | 059ce0d | 2011-05-01 07:04:31 +0000 | [diff] [blame] | 1572 | // It's important not to confuse this and the previous function. Delegating |
| 1573 | // constructors are the C++0x feature. The constructor delegate optimization |
| 1574 | // is used to reduce duplication in the base and complete consturctors where |
| 1575 | // they are substantially the same. |
| 1576 | void EmitDelegatingCXXConstructorCall(const CXXConstructorDecl *Ctor, |
| 1577 | const FunctionArgList &Args); |
Anders Carlsson | 155ed4a | 2010-05-02 23:20:53 +0000 | [diff] [blame] | 1578 | void EmitCXXConstructorCall(const CXXConstructorDecl *D, CXXCtorType Type, |
Douglas Gregor | 378e1e7 | 2013-01-31 05:50:40 +0000 | [diff] [blame] | 1579 | bool ForVirtualBase, bool Delegating, |
| 1580 | llvm::Value *This, |
Anders Carlsson | b14095a | 2009-04-17 00:06:03 +0000 | [diff] [blame] | 1581 | CallExpr::const_arg_iterator ArgBeg, |
| 1582 | CallExpr::const_arg_iterator ArgEnd); |
Fariborz Jahanian | 3499987 | 2010-11-13 21:53:34 +0000 | [diff] [blame] | 1583 | |
| 1584 | void EmitSynthesizedCXXCopyCtorCall(const CXXConstructorDecl *D, |
| 1585 | llvm::Value *This, llvm::Value *Src, |
| 1586 | CallExpr::const_arg_iterator ArgBeg, |
| 1587 | CallExpr::const_arg_iterator ArgEnd); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1588 | |
Fariborz Jahanian | 288dcaf | 2009-08-19 20:55:16 +0000 | [diff] [blame] | 1589 | void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, |
Anders Carlsson | 569c1f4 | 2009-09-23 02:45:36 +0000 | [diff] [blame] | 1590 | const ConstantArrayType *ArrayTy, |
Anders Carlsson | 5d4d946 | 2009-11-24 18:43:52 +0000 | [diff] [blame] | 1591 | llvm::Value *ArrayPtr, |
| 1592 | CallExpr::const_arg_iterator ArgBeg, |
Douglas Gregor | 59174c0 | 2010-07-21 01:10:17 +0000 | [diff] [blame] | 1593 | CallExpr::const_arg_iterator ArgEnd, |
| 1594 | bool ZeroInitialization = false); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1595 | |
Anders Carlsson | 569c1f4 | 2009-09-23 02:45:36 +0000 | [diff] [blame] | 1596 | void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, |
| 1597 | llvm::Value *NumElements, |
Anders Carlsson | 5d4d946 | 2009-11-24 18:43:52 +0000 | [diff] [blame] | 1598 | llvm::Value *ArrayPtr, |
| 1599 | CallExpr::const_arg_iterator ArgBeg, |
Douglas Gregor | 59174c0 | 2010-07-21 01:10:17 +0000 | [diff] [blame] | 1600 | CallExpr::const_arg_iterator ArgEnd, |
| 1601 | bool ZeroInitialization = false); |
Anders Carlsson | b14095a | 2009-04-17 00:06:03 +0000 | [diff] [blame] | 1602 | |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1603 | static Destroyer destroyCXXObject; |
| 1604 | |
Anders Carlsson | 7267c16 | 2009-05-29 21:03:38 +0000 | [diff] [blame] | 1605 | void EmitCXXDestructorCall(const CXXDestructorDecl *D, CXXDtorType Type, |
Douglas Gregor | 378e1e7 | 2013-01-31 05:50:40 +0000 | [diff] [blame] | 1606 | bool ForVirtualBase, bool Delegating, |
| 1607 | llvm::Value *This); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1608 | |
John McCall | 1970567 | 2011-09-15 06:49:18 +0000 | [diff] [blame] | 1609 | void EmitNewArrayInitializer(const CXXNewExpr *E, QualType elementType, |
| 1610 | llvm::Value *NewPtr, llvm::Value *NumElements); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1611 | |
Peter Collingbourne | 8681160 | 2011-11-27 22:09:22 +0000 | [diff] [blame] | 1612 | void EmitCXXTemporary(const CXXTemporary *Temporary, QualType TempType, |
| 1613 | llvm::Value *Ptr); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1614 | |
Anders Carlsson | a00703d | 2009-05-31 01:40:14 +0000 | [diff] [blame] | 1615 | llvm::Value *EmitCXXNewExpr(const CXXNewExpr *E); |
Anders Carlsson | 60e282c | 2009-08-16 21:13:42 +0000 | [diff] [blame] | 1616 | void EmitCXXDeleteExpr(const CXXDeleteExpr *E); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1617 | |
Eli Friedman | 4bf8152 | 2009-11-18 00:57:03 +0000 | [diff] [blame] | 1618 | void EmitDeleteCall(const FunctionDecl *DeleteFD, llvm::Value *Ptr, |
| 1619 | QualType DeleteTy); |
| 1620 | |
Mike Stump | c2e84ae | 2009-11-15 08:09:41 +0000 | [diff] [blame] | 1621 | llvm::Value* EmitCXXTypeidExpr(const CXXTypeidExpr *E); |
Mike Stump | c849c05 | 2009-11-16 06:50:58 +0000 | [diff] [blame] | 1622 | llvm::Value *EmitDynamicCast(llvm::Value *V, const CXXDynamicCastExpr *DCE); |
Nico Weber | c5f8046 | 2012-10-11 10:13:44 +0000 | [diff] [blame] | 1623 | llvm::Value* EmitCXXUuidofExpr(const CXXUuidofExpr *E); |
Mike Stump | c2e84ae | 2009-11-15 08:09:41 +0000 | [diff] [blame] | 1624 | |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 1625 | /// \brief Situations in which we might emit a check for the suitability of a |
| 1626 | /// pointer or glvalue. |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 1627 | enum TypeCheckKind { |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 1628 | /// Checking the operand of a load. Must be suitably sized and aligned. |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 1629 | TCK_Load, |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 1630 | /// Checking the destination of a store. Must be suitably sized and aligned. |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 1631 | TCK_Store, |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 1632 | /// Checking the bound value in a reference binding. Must be suitably sized |
| 1633 | /// and aligned, but is not required to refer to an object (until the |
| 1634 | /// reference is used), per core issue 453. |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 1635 | TCK_ReferenceBinding, |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 1636 | /// Checking the object expression in a non-static data member access. Must |
| 1637 | /// be an object within its lifetime. |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 1638 | TCK_MemberAccess, |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 1639 | /// Checking the 'this' pointer for a call to a non-static member function. |
| 1640 | /// Must be an object within its lifetime. |
Richard Smith | 8e1cee6 | 2012-10-25 02:14:12 +0000 | [diff] [blame] | 1641 | TCK_MemberCall, |
| 1642 | /// Checking the 'this' pointer for a constructor call. |
Richard Smith | c764830 | 2013-02-13 21:18:23 +0000 | [diff] [blame] | 1643 | TCK_ConstructorCall, |
| 1644 | /// Checking the operand of a static_cast to a derived pointer type. Must be |
| 1645 | /// null or an object within its lifetime. |
| 1646 | TCK_DowncastPointer, |
| 1647 | /// Checking the operand of a static_cast to a derived reference type. Must |
| 1648 | /// be an object within its lifetime. |
| 1649 | TCK_DowncastReference |
Richard Smith | 2c9f87c | 2012-08-24 00:54:33 +0000 | [diff] [blame] | 1650 | }; |
| 1651 | |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 1652 | /// \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] | 1653 | /// appropriate size and alignment for an object of type \p Type. |
Richard Smith | 4def70d | 2012-10-09 19:52:38 +0000 | [diff] [blame] | 1654 | void EmitTypeCheck(TypeCheckKind TCK, SourceLocation Loc, llvm::Value *V, |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 1655 | QualType Type, CharUnits Alignment = CharUnits::Zero()); |
Mike Stump | b14e62d | 2009-12-16 02:57:00 +0000 | [diff] [blame] | 1656 | |
Richard Smith | a0a628f | 2013-02-23 02:53:19 +0000 | [diff] [blame] | 1657 | /// \brief Emit a check that \p Base points into an array object, which |
| 1658 | /// we can access at index \p Index. \p Accessed should be \c false if we |
| 1659 | /// this expression is used as an lvalue, for instance in "&Arr[Idx]". |
| 1660 | void EmitBoundsCheck(const Expr *E, const Expr *Base, llvm::Value *Index, |
| 1661 | QualType IndexType, bool Accessed); |
| 1662 | |
Chris Lattner | dd36d32 | 2010-01-09 21:40:03 +0000 | [diff] [blame] | 1663 | llvm::Value *EmitScalarPrePostIncDec(const UnaryOperator *E, LValue LV, |
| 1664 | bool isInc, bool isPre); |
| 1665 | ComplexPairTy EmitComplexPrePostIncDec(const UnaryOperator *E, LValue LV, |
| 1666 | bool isInc, bool isPre); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1667 | //===--------------------------------------------------------------------===// |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1668 | // Declaration Emission |
| 1669 | //===--------------------------------------------------------------------===// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1670 | |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 1671 | /// EmitDecl - Emit a declaration. |
| 1672 | /// |
| 1673 | /// This function can be called with a null (unreachable) insert point. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1674 | void EmitDecl(const Decl &D); |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 1675 | |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 1676 | /// EmitVarDecl - Emit a local variable declaration. |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 1677 | /// |
| 1678 | /// This function can be called with a null (unreachable) insert point. |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 1679 | void EmitVarDecl(const VarDecl &D); |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 1680 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 1681 | void EmitScalarInit(const Expr *init, const ValueDecl *D, |
John McCall | a07398e | 2011-06-16 04:16:24 +0000 | [diff] [blame] | 1682 | LValue lvalue, bool capturedByInit); |
John McCall | 7acddac | 2011-06-17 06:42:21 +0000 | [diff] [blame] | 1683 | void EmitScalarInit(llvm::Value *init, LValue lvalue); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 1684 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 1685 | typedef void SpecialInitFn(CodeGenFunction &Init, const VarDecl &D, |
| 1686 | llvm::Value *Address); |
| 1687 | |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 1688 | /// EmitAutoVarDecl - Emit an auto variable declaration. |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 1689 | /// |
| 1690 | /// This function can be called with a null (unreachable) insert point. |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 1691 | void EmitAutoVarDecl(const VarDecl &D); |
| 1692 | |
| 1693 | class AutoVarEmission { |
| 1694 | friend class CodeGenFunction; |
| 1695 | |
John McCall | 57b3b6a | 2011-02-22 07:16:58 +0000 | [diff] [blame] | 1696 | const VarDecl *Variable; |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 1697 | |
| 1698 | /// The alignment of the variable. |
| 1699 | CharUnits Alignment; |
| 1700 | |
| 1701 | /// The address of the alloca. Null if the variable was emitted |
| 1702 | /// as a global constant. |
| 1703 | llvm::Value *Address; |
| 1704 | |
| 1705 | llvm::Value *NRVOFlag; |
| 1706 | |
| 1707 | /// True if the variable is a __block variable. |
| 1708 | bool IsByRef; |
| 1709 | |
| 1710 | /// True if the variable is of aggregate type and has a constant |
| 1711 | /// initializer. |
| 1712 | bool IsConstantAggregate; |
| 1713 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 1714 | /// Non-null if we should use lifetime annotations. |
| 1715 | llvm::Value *SizeForLifetimeMarkers; |
| 1716 | |
John McCall | 57b3b6a | 2011-02-22 07:16:58 +0000 | [diff] [blame] | 1717 | struct Invalid {}; |
| 1718 | AutoVarEmission(Invalid) : Variable(0) {} |
| 1719 | |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 1720 | AutoVarEmission(const VarDecl &variable) |
John McCall | 57b3b6a | 2011-02-22 07:16:58 +0000 | [diff] [blame] | 1721 | : Variable(&variable), Address(0), NRVOFlag(0), |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 1722 | IsByRef(false), IsConstantAggregate(false), |
| 1723 | SizeForLifetimeMarkers(0) {} |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 1724 | |
| 1725 | bool wasEmittedAsGlobal() const { return Address == 0; } |
| 1726 | |
| 1727 | public: |
John McCall | 57b3b6a | 2011-02-22 07:16:58 +0000 | [diff] [blame] | 1728 | static AutoVarEmission invalid() { return AutoVarEmission(Invalid()); } |
| 1729 | |
Nadav Rotem | 495cfa4 | 2013-03-23 06:43:35 +0000 | [diff] [blame] | 1730 | bool useLifetimeMarkers() const { return SizeForLifetimeMarkers != 0; } |
| 1731 | llvm::Value *getSizeForLifetimeMarkers() const { |
| 1732 | assert(useLifetimeMarkers()); |
| 1733 | return SizeForLifetimeMarkers; |
| 1734 | } |
| 1735 | |
| 1736 | /// Returns the raw, allocated address, which is not necessarily |
| 1737 | /// the address of the object itself. |
| 1738 | llvm::Value *getAllocatedAddress() const { |
| 1739 | return Address; |
| 1740 | } |
| 1741 | |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 1742 | /// Returns the address of the object within this declaration. |
| 1743 | /// Note that this does not chase the forwarding pointer for |
| 1744 | /// __block decls. |
| 1745 | llvm::Value *getObjectAddress(CodeGenFunction &CGF) const { |
| 1746 | if (!IsByRef) return Address; |
| 1747 | |
| 1748 | return CGF.Builder.CreateStructGEP(Address, |
John McCall | 57b3b6a | 2011-02-22 07:16:58 +0000 | [diff] [blame] | 1749 | CGF.getByRefValueLLVMField(Variable), |
| 1750 | Variable->getNameAsString()); |
John McCall | 3469585 | 2011-02-22 06:44:22 +0000 | [diff] [blame] | 1751 | } |
| 1752 | }; |
| 1753 | AutoVarEmission EmitAutoVarAlloca(const VarDecl &var); |
| 1754 | void EmitAutoVarInit(const AutoVarEmission &emission); |
| 1755 | void EmitAutoVarCleanups(const AutoVarEmission &emission); |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 1756 | void emitAutoVarTypeCleanup(const AutoVarEmission &emission, |
| 1757 | QualType::DestructionKind dtorKind); |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 1758 | |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 1759 | void EmitStaticVarDecl(const VarDecl &D, |
| 1760 | llvm::GlobalValue::LinkageTypes Linkage); |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 1761 | |
| 1762 | /// EmitParmDecl - Emit a ParmVarDecl or an ImplicitParamDecl. |
Devang Patel | 093ac46 | 2011-03-03 20:13:15 +0000 | [diff] [blame] | 1763 | void EmitParmDecl(const VarDecl &D, llvm::Value *Arg, unsigned ArgNo); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1764 | |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1765 | /// protectFromPeepholes - Protect a value that we're intending to |
| 1766 | /// store to the side, but which will probably be used later, from |
| 1767 | /// aggressive peepholing optimizations that might delete it. |
| 1768 | /// |
| 1769 | /// Pass the result to unprotectFromPeepholes to declare that |
| 1770 | /// protection is no longer required. |
| 1771 | /// |
| 1772 | /// There's no particular reason why this shouldn't apply to |
| 1773 | /// l-values, it's just that no existing peepholes work on pointers. |
| 1774 | PeepholeProtection protectFromPeepholes(RValue rvalue); |
| 1775 | void unprotectFromPeepholes(PeepholeProtection protection); |
| 1776 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1777 | //===--------------------------------------------------------------------===// |
| 1778 | // Statement Emission |
| 1779 | //===--------------------------------------------------------------------===// |
| 1780 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1781 | /// EmitStopPoint - Emit a debug stoppoint if we are emitting debug info. |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 1782 | void EmitStopPoint(const Stmt *S); |
| 1783 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1784 | /// EmitStmt - Emit the code for the statement \arg S. It is legal to call |
| 1785 | /// this function even if there is no current insertion point. |
| 1786 | /// |
| 1787 | /// This function may clear the current insertion point; callers should use |
| 1788 | /// EnsureInsertPoint if they wish to subsequently generate code without first |
| 1789 | /// calling EmitBlock, EmitBranch, or EmitStmt. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1790 | void EmitStmt(const Stmt *S); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 1791 | |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 1792 | /// EmitSimpleStmt - Try to emit a "simple" statement which does not |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1793 | /// necessarily require an insertion point or debug information; typically |
| 1794 | /// because the statement amounts to a jump or a container of other |
| 1795 | /// statements. |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 1796 | /// |
| 1797 | /// \return True if the statement was handled. |
| 1798 | bool EmitSimpleStmt(const Stmt *S); |
| 1799 | |
Eli Friedman | 2ac2fa7 | 2013-06-10 22:04:49 +0000 | [diff] [blame] | 1800 | llvm::Value *EmitCompoundStmt(const CompoundStmt &S, bool GetLast = false, |
| 1801 | AggValueSlot AVS = AggValueSlot::ignored()); |
| 1802 | llvm::Value *EmitCompoundStmtWithoutScope(const CompoundStmt &S, |
| 1803 | bool GetLast = false, |
| 1804 | AggValueSlot AVS = |
| 1805 | AggValueSlot::ignored()); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 1806 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1807 | /// EmitLabel - Emit the block for the given label. It is legal to call this |
| 1808 | /// function even if there is no current insertion point. |
Chris Lattner | ad8dcf4 | 2011-02-17 07:39:24 +0000 | [diff] [blame] | 1809 | void EmitLabel(const LabelDecl *D); // helper for EmitLabelStmt. |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 1810 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1811 | void EmitLabelStmt(const LabelStmt &S); |
Richard Smith | 534986f | 2012-04-14 00:33:13 +0000 | [diff] [blame] | 1812 | void EmitAttributedStmt(const AttributedStmt &S); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1813 | void EmitGotoStmt(const GotoStmt &S); |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 1814 | void EmitIndirectGotoStmt(const IndirectGotoStmt &S); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1815 | void EmitIfStmt(const IfStmt &S); |
| 1816 | void EmitWhileStmt(const WhileStmt &S); |
| 1817 | void EmitDoStmt(const DoStmt &S); |
| 1818 | void EmitForStmt(const ForStmt &S); |
| 1819 | void EmitReturnStmt(const ReturnStmt &S); |
| 1820 | void EmitDeclStmt(const DeclStmt &S); |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 1821 | void EmitBreakStmt(const BreakStmt &S); |
| 1822 | void EmitContinueStmt(const ContinueStmt &S); |
Devang Patel | 51b09f2 | 2007-10-04 23:45:31 +0000 | [diff] [blame] | 1823 | void EmitSwitchStmt(const SwitchStmt &S); |
| 1824 | void EmitDefaultStmt(const DefaultStmt &S); |
| 1825 | void EmitCaseStmt(const CaseStmt &S); |
Devang Patel | c049e4f | 2007-10-08 20:57:48 +0000 | [diff] [blame] | 1826 | void EmitCaseStmtRange(const CaseStmt &S); |
Chad Rosier | a23b91d | 2012-08-28 18:54:39 +0000 | [diff] [blame] | 1827 | void EmitAsmStmt(const AsmStmt &S); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1828 | |
Anders Carlsson | 3d8400d | 2008-08-30 19:51:14 +0000 | [diff] [blame] | 1829 | void EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S); |
Anders Carlsson | 64d5d6c | 2008-09-09 10:04:29 +0000 | [diff] [blame] | 1830 | void EmitObjCAtTryStmt(const ObjCAtTryStmt &S); |
| 1831 | void EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S); |
Chris Lattner | 10cac6f | 2008-11-15 21:26:17 +0000 | [diff] [blame] | 1832 | void EmitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt &S); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 1833 | void EmitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt &S); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1834 | |
John McCall | 93c332a | 2011-05-28 21:13:02 +0000 | [diff] [blame] | 1835 | llvm::Constant *getUnwindResumeFn(); |
Douglas Gregor | 86a3a03 | 2010-05-16 01:24:12 +0000 | [diff] [blame] | 1836 | llvm::Constant *getUnwindResumeOrRethrowFn(); |
John McCall | 59a7000 | 2010-07-07 06:56:46 +0000 | [diff] [blame] | 1837 | void EnterCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); |
| 1838 | void ExitCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); |
John McCall | 9fc6a77 | 2010-02-19 09:25:03 +0000 | [diff] [blame] | 1839 | |
Anders Carlsson | 6815e94 | 2009-09-27 18:58:34 +0000 | [diff] [blame] | 1840 | void EmitCXXTryStmt(const CXXTryStmt &S); |
Richard Smith | ad762fc | 2011-04-14 22:09:26 +0000 | [diff] [blame] | 1841 | void EmitCXXForRangeStmt(const CXXForRangeStmt &S); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1842 | |
Ben Langmuir | 524387a | 2013-05-09 19:17:11 +0000 | [diff] [blame] | 1843 | llvm::Function *EmitCapturedStmt(const CapturedStmt &S, CapturedRegionKind K); |
| 1844 | llvm::Function *GenerateCapturedStmtFunction(const CapturedDecl *CD, |
| 1845 | const RecordDecl *RD); |
| 1846 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1847 | //===--------------------------------------------------------------------===// |
| 1848 | // LValue Expression Emission |
| 1849 | //===--------------------------------------------------------------------===// |
| 1850 | |
Daniel Dunbar | 13e8173 | 2009-02-05 07:09:07 +0000 | [diff] [blame] | 1851 | /// GetUndefRValue - Get an appropriate 'undef' rvalue for the given type. |
| 1852 | RValue GetUndefRValue(QualType Ty); |
| 1853 | |
Daniel Dunbar | ce1d38b | 2009-01-09 16:50:52 +0000 | [diff] [blame] | 1854 | /// EmitUnsupportedRValue - Emit a dummy r-value using the type of E |
| 1855 | /// and issue an ErrorUnsupported style diagnostic (using the |
| 1856 | /// provided Name). |
| 1857 | RValue EmitUnsupportedRValue(const Expr *E, |
| 1858 | const char *Name); |
| 1859 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1860 | /// EmitUnsupportedLValue - Emit a dummy l-value using the type of E and issue |
| 1861 | /// an ErrorUnsupported style diagnostic (using the provided Name). |
Daniel Dunbar | 6ba82a4 | 2008-08-25 20:45:57 +0000 | [diff] [blame] | 1862 | LValue EmitUnsupportedLValue(const Expr *E, |
| 1863 | const char *Name); |
| 1864 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1865 | /// EmitLValue - Emit code to compute a designator that specifies the location |
| 1866 | /// of the expression. |
| 1867 | /// |
| 1868 | /// This can return one of two things: a simple address or a bitfield |
| 1869 | /// reference. In either case, the LLVM Value* in the LValue structure is |
| 1870 | /// guaranteed to be an LLVM pointer type. |
| 1871 | /// |
| 1872 | /// If this returns a bitfield reference, nothing about the pointee type of |
| 1873 | /// the LLVM value is known: For example, it may not be a pointer to an |
| 1874 | /// integer. |
| 1875 | /// |
| 1876 | /// If this returns a normal address, and if the lvalue's C type is fixed |
| 1877 | /// size, this method guarantees that the returned pointer type will point to |
| 1878 | /// an LLVM type of the same size of the lvalue's type. If the lvalue has a |
| 1879 | /// variable length type, this is not possible. |
| 1880 | /// |
| 1881 | LValue EmitLValue(const Expr *E); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1882 | |
Richard Smith | 7ac9ef1 | 2012-09-08 02:08:36 +0000 | [diff] [blame] | 1883 | /// \brief Same as EmitLValue but additionally we generate checking code to |
| 1884 | /// guard against undefined behavior. This is only suitable when we know |
| 1885 | /// that the address will be used to access the object. |
| 1886 | LValue EmitCheckedLValue(const Expr *E, TypeCheckKind TCK); |
Mike Stump | b14e62d | 2009-12-16 02:57:00 +0000 | [diff] [blame] | 1887 | |
John McCall | 9d232c8 | 2013-03-07 21:37:08 +0000 | [diff] [blame] | 1888 | RValue convertTempToRValue(llvm::Value *addr, QualType type); |
| 1889 | |
John McCall | 9eda3ab | 2013-03-07 21:37:17 +0000 | [diff] [blame] | 1890 | void EmitAtomicInit(Expr *E, LValue lvalue); |
| 1891 | |
| 1892 | RValue EmitAtomicLoad(LValue lvalue, |
| 1893 | AggValueSlot slot = AggValueSlot::ignored()); |
| 1894 | |
| 1895 | void EmitAtomicStore(RValue rvalue, LValue lvalue, bool isInit); |
| 1896 | |
John McCall | 26815d9 | 2010-10-27 20:58:56 +0000 | [diff] [blame] | 1897 | /// EmitToMemory - Change a scalar value from its value |
| 1898 | /// representation to its in-memory representation. |
| 1899 | llvm::Value *EmitToMemory(llvm::Value *Value, QualType Ty); |
| 1900 | |
| 1901 | /// EmitFromMemory - Change a scalar value from its memory |
| 1902 | /// representation to its value representation. |
| 1903 | llvm::Value *EmitFromMemory(llvm::Value *Value, QualType Ty); |
| 1904 | |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 1905 | /// EmitLoadOfScalar - Load a scalar value from an address, taking |
| 1906 | /// care to appropriately convert from the memory representation to |
| 1907 | /// the LLVM value representation. |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 1908 | llvm::Value *EmitLoadOfScalar(llvm::Value *Addr, bool Volatile, |
Dan Gohman | 3d5aff5 | 2010-10-14 23:06:10 +0000 | [diff] [blame] | 1909 | unsigned Alignment, QualType Ty, |
Manman Ren | b37a73d | 2013-04-04 21:53:22 +0000 | [diff] [blame] | 1910 | llvm::MDNode *TBAAInfo = 0, |
| 1911 | QualType TBAABaseTy = QualType(), |
| 1912 | uint64_t TBAAOffset = 0); |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 1913 | |
| 1914 | /// EmitLoadOfScalar - Load a scalar value from an address, taking |
| 1915 | /// care to appropriately convert from the memory representation to |
| 1916 | /// the LLVM value representation. The l-value must be a simple |
| 1917 | /// l-value. |
John McCall | a07398e | 2011-06-16 04:16:24 +0000 | [diff] [blame] | 1918 | llvm::Value *EmitLoadOfScalar(LValue lvalue); |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 1919 | |
| 1920 | /// EmitStoreOfScalar - Store a scalar value to an address, taking |
| 1921 | /// care to appropriately convert from the memory representation to |
| 1922 | /// the LLVM value representation. |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 1923 | void EmitStoreOfScalar(llvm::Value *Value, llvm::Value *Addr, |
Dan Gohman | 3d5aff5 | 2010-10-14 23:06:10 +0000 | [diff] [blame] | 1924 | bool Volatile, unsigned Alignment, QualType Ty, |
Manman Ren | b37a73d | 2013-04-04 21:53:22 +0000 | [diff] [blame] | 1925 | llvm::MDNode *TBAAInfo = 0, bool isInit = false, |
| 1926 | QualType TBAABaseTy = QualType(), |
| 1927 | uint64_t TBAAOffset = 0); |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 1928 | |
| 1929 | /// EmitStoreOfScalar - Store a scalar value to an address, taking |
| 1930 | /// care to appropriately convert from the memory representation to |
| 1931 | /// the LLVM value representation. The l-value must be a simple |
David Chisnall | 7a7ee30 | 2012-01-16 17:27:18 +0000 | [diff] [blame] | 1932 | /// l-value. The isInit flag indicates whether this is an initialization. |
| 1933 | /// If so, atomic qualifiers are ignored and the store is always non-atomic. |
| 1934 | void EmitStoreOfScalar(llvm::Value *value, LValue lvalue, bool isInit=false); |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 1935 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1936 | /// EmitLoadOfLValue - Given an expression that represents a value lvalue, |
| 1937 | /// this method emits the address of the lvalue, then loads the result as an |
| 1938 | /// rvalue, returning the rvalue. |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 1939 | RValue EmitLoadOfLValue(LValue V); |
| 1940 | RValue EmitLoadOfExtVectorElementLValue(LValue V); |
| 1941 | RValue EmitLoadOfBitfieldLValue(LValue LV); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1942 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1943 | /// EmitStoreThroughLValue - Store the specified rvalue into the specified |
| 1944 | /// lvalue, where both are guaranteed to the have the same type, and that type |
| 1945 | /// is 'Ty'. |
David Chisnall | 7a7ee30 | 2012-01-16 17:27:18 +0000 | [diff] [blame] | 1946 | void EmitStoreThroughLValue(RValue Src, LValue Dst, bool isInit=false); |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 1947 | void EmitStoreThroughExtVectorComponentLValue(RValue Src, LValue Dst); |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 1948 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1949 | /// EmitStoreThroughLValue - Store Src into Dst with same constraints as |
| 1950 | /// EmitStoreThroughLValue. |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 1951 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1952 | /// \param Result [out] - If non-null, this will be set to a Value* for the |
| 1953 | /// bit-field contents after the store, appropriate for use as the result of |
| 1954 | /// an assignment to the bit-field. |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 1955 | void EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst, |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 1956 | llvm::Value **Result=0); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 1957 | |
John McCall | 83ce9d4 | 2010-11-16 23:07:28 +0000 | [diff] [blame] | 1958 | /// Emit an l-value for an assignment (simple or compound) of complex type. |
| 1959 | LValue EmitComplexAssignmentLValue(const BinaryOperator *E); |
John McCall | 2a41637 | 2010-12-05 02:00:02 +0000 | [diff] [blame] | 1960 | LValue EmitComplexCompoundAssignmentLValue(const CompoundAssignOperator *E); |
Eli Friedman | 0934e18 | 2013-06-12 01:40:06 +0000 | [diff] [blame] | 1961 | LValue EmitScalarCompooundAssignWithComplex(const CompoundAssignOperator *E, |
| 1962 | llvm::Value *&Result); |
John McCall | 83ce9d4 | 2010-11-16 23:07:28 +0000 | [diff] [blame] | 1963 | |
Chris Lattner | fc8f0e1 | 2011-04-15 05:22:18 +0000 | [diff] [blame] | 1964 | // Note: only available for agg return types |
Daniel Dunbar | 80e62c2 | 2008-09-04 03:20:13 +0000 | [diff] [blame] | 1965 | LValue EmitBinaryOperatorLValue(const BinaryOperator *E); |
John McCall | 2a41637 | 2010-12-05 02:00:02 +0000 | [diff] [blame] | 1966 | LValue EmitCompoundAssignmentLValue(const CompoundAssignOperator *E); |
Daniel Dunbar | 5b5c9ef | 2009-02-11 20:59:32 +0000 | [diff] [blame] | 1967 | // Note: only available for agg return types |
Christopher Lamb | 22c940e | 2007-12-29 05:02:41 +0000 | [diff] [blame] | 1968 | LValue EmitCallExprLValue(const CallExpr *E); |
Daniel Dunbar | 5b5c9ef | 2009-02-11 20:59:32 +0000 | [diff] [blame] | 1969 | // Note: only available for agg return types |
| 1970 | LValue EmitVAArgExprLValue(const VAArgExpr *E); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1971 | LValue EmitDeclRefLValue(const DeclRefExpr *E); |
| 1972 | LValue EmitStringLiteralLValue(const StringLiteral *E); |
Chris Lattner | eaf2bb8 | 2009-02-24 22:18:39 +0000 | [diff] [blame] | 1973 | LValue EmitObjCEncodeExprLValue(const ObjCEncodeExpr *E); |
Chris Lattner | d9f6910 | 2008-08-10 01:53:14 +0000 | [diff] [blame] | 1974 | LValue EmitPredefinedLValue(const PredefinedExpr *E); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1975 | LValue EmitUnaryOpLValue(const UnaryOperator *E); |
Richard Smith | a0a628f | 2013-02-23 02:53:19 +0000 | [diff] [blame] | 1976 | LValue EmitArraySubscriptExpr(const ArraySubscriptExpr *E, |
| 1977 | bool Accessed = false); |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 1978 | LValue EmitExtVectorElementExpr(const ExtVectorElementExpr *E); |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 1979 | LValue EmitMemberExpr(const MemberExpr *E); |
Fariborz Jahanian | 820bca4 | 2009-12-09 23:35:29 +0000 | [diff] [blame] | 1980 | LValue EmitObjCIsaExpr(const ObjCIsaExpr *E); |
Eli Friedman | 06e863f | 2008-05-13 23:18:27 +0000 | [diff] [blame] | 1981 | LValue EmitCompoundLiteralLValue(const CompoundLiteralExpr *E); |
Richard Smith | 13ec910 | 2012-05-14 21:57:21 +0000 | [diff] [blame] | 1982 | LValue EmitInitListLValue(const InitListExpr *E); |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 1983 | LValue EmitConditionalOperatorLValue(const AbstractConditionalOperator *E); |
Chris Lattner | 75dfeda | 2009-03-18 18:28:57 +0000 | [diff] [blame] | 1984 | LValue EmitCastLValue(const CastExpr *E); |
Douglas Gregor | 03e8003 | 2011-06-21 17:03:29 +0000 | [diff] [blame] | 1985 | LValue EmitMaterializeTemporaryExpr(const MaterializeTemporaryExpr *E); |
John McCall | e996ffd | 2011-02-16 08:02:54 +0000 | [diff] [blame] | 1986 | LValue EmitOpaqueValueLValue(const OpaqueValueExpr *e); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 1987 | |
Eli Friedman | 377ecc7 | 2012-04-16 03:54:45 +0000 | [diff] [blame] | 1988 | RValue EmitRValueForField(LValue LV, const FieldDecl *FD); |
Anton Korobeynikov | eaf856d | 2012-04-13 11:22:00 +0000 | [diff] [blame] | 1989 | |
John McCall | dd2ecee | 2012-03-10 03:05:10 +0000 | [diff] [blame] | 1990 | class ConstantEmission { |
| 1991 | llvm::PointerIntPair<llvm::Constant*, 1, bool> ValueAndIsReference; |
| 1992 | ConstantEmission(llvm::Constant *C, bool isReference) |
| 1993 | : ValueAndIsReference(C, isReference) {} |
| 1994 | public: |
| 1995 | ConstantEmission() {} |
| 1996 | static ConstantEmission forReference(llvm::Constant *C) { |
| 1997 | return ConstantEmission(C, true); |
| 1998 | } |
| 1999 | static ConstantEmission forValue(llvm::Constant *C) { |
| 2000 | return ConstantEmission(C, false); |
| 2001 | } |
| 2002 | |
David Blaikie | 7247c88 | 2013-05-15 07:37:26 +0000 | [diff] [blame] | 2003 | LLVM_EXPLICIT operator bool() const { return ValueAndIsReference.getOpaqueValue() != 0; } |
John McCall | dd2ecee | 2012-03-10 03:05:10 +0000 | [diff] [blame] | 2004 | |
| 2005 | bool isReference() const { return ValueAndIsReference.getInt(); } |
| 2006 | LValue getReferenceLValue(CodeGenFunction &CGF, Expr *refExpr) const { |
| 2007 | assert(isReference()); |
| 2008 | return CGF.MakeNaturalAlignAddrLValue(ValueAndIsReference.getPointer(), |
| 2009 | refExpr->getType()); |
| 2010 | } |
| 2011 | |
| 2012 | llvm::Constant *getValue() const { |
| 2013 | assert(!isReference()); |
| 2014 | return ValueAndIsReference.getPointer(); |
| 2015 | } |
| 2016 | }; |
| 2017 | |
John McCall | f4b88a4 | 2012-03-10 09:33:50 +0000 | [diff] [blame] | 2018 | ConstantEmission tryEmitAsConstant(DeclRefExpr *refExpr); |
John McCall | dd2ecee | 2012-03-10 03:05:10 +0000 | [diff] [blame] | 2019 | |
John McCall | 4b9c2d2 | 2011-11-06 09:01:30 +0000 | [diff] [blame] | 2020 | RValue EmitPseudoObjectRValue(const PseudoObjectExpr *e, |
| 2021 | AggValueSlot slot = AggValueSlot::ignored()); |
| 2022 | LValue EmitPseudoObjectLValue(const PseudoObjectExpr *e); |
| 2023 | |
Daniel Dunbar | 2a03192 | 2009-04-22 05:08:15 +0000 | [diff] [blame] | 2024 | llvm::Value *EmitIvarOffset(const ObjCInterfaceDecl *Interface, |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 2025 | const ObjCIvarDecl *Ivar); |
Eli Friedman | 377ecc7 | 2012-04-16 03:54:45 +0000 | [diff] [blame] | 2026 | LValue EmitLValueForField(LValue Base, const FieldDecl* Field); |
John McCall | f5ebf9b | 2013-05-03 07:33:41 +0000 | [diff] [blame] | 2027 | LValue EmitLValueForLambdaField(const FieldDecl *Field); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2028 | |
Anders Carlsson | 06a2970 | 2010-01-29 05:24:29 +0000 | [diff] [blame] | 2029 | /// EmitLValueForFieldInitialization - Like EmitLValueForField, except that |
| 2030 | /// if the Field is a reference, this will return the address of the reference |
| 2031 | /// and not the address of the value stored in the reference. |
Eli Friedman | 377ecc7 | 2012-04-16 03:54:45 +0000 | [diff] [blame] | 2032 | LValue EmitLValueForFieldInitialization(LValue Base, |
| 2033 | const FieldDecl* Field); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2034 | |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 2035 | LValue EmitLValueForIvar(QualType ObjectTy, |
| 2036 | llvm::Value* Base, const ObjCIvarDecl *Ivar, |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 2037 | unsigned CVRQualifiers); |
| 2038 | |
Anders Carlsson | b58d017 | 2009-05-30 23:23:33 +0000 | [diff] [blame] | 2039 | LValue EmitCXXConstructLValue(const CXXConstructExpr *E); |
Anders Carlsson | e61c9e8 | 2009-05-30 23:30:54 +0000 | [diff] [blame] | 2040 | LValue EmitCXXBindTemporaryLValue(const CXXBindTemporaryExpr *E); |
Eli Friedman | 31a3702 | 2012-02-08 05:34:55 +0000 | [diff] [blame] | 2041 | LValue EmitLambdaLValue(const LambdaExpr *E); |
Mike Stump | c2e84ae | 2009-11-15 08:09:41 +0000 | [diff] [blame] | 2042 | LValue EmitCXXTypeidLValue(const CXXTypeidExpr *E); |
Nico Weber | c5f8046 | 2012-10-11 10:13:44 +0000 | [diff] [blame] | 2043 | LValue EmitCXXUuidofLValue(const CXXUuidofExpr *E); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2044 | |
Daniel Dunbar | 0a04d77 | 2008-08-23 10:51:21 +0000 | [diff] [blame] | 2045 | LValue EmitObjCMessageExprLValue(const ObjCMessageExpr *E); |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 2046 | LValue EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E); |
Chris Lattner | 6545994 | 2009-04-25 19:35:26 +0000 | [diff] [blame] | 2047 | LValue EmitStmtExprLValue(const StmtExpr *E); |
Fariborz Jahanian | 8bfd31f | 2009-10-22 22:57:31 +0000 | [diff] [blame] | 2048 | LValue EmitPointerToDataMemberBinaryExpr(const BinaryOperator *E); |
Fariborz Jahanian | 03b2960 | 2010-06-17 19:56:20 +0000 | [diff] [blame] | 2049 | LValue EmitObjCSelectorLValue(const ObjCSelectorExpr *E); |
Yunzhong Gao | 3b8e0b7 | 2013-08-30 08:53:09 +0000 | [diff] [blame] | 2050 | void EmitDeclRefExprDbgValue(const DeclRefExpr *E, llvm::Constant *Init); |
John McCall | 56ca35d | 2011-02-17 10:25:35 +0000 | [diff] [blame] | 2051 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2052 | //===--------------------------------------------------------------------===// |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 2053 | // Scalar Expression Emission |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2054 | //===--------------------------------------------------------------------===// |
| 2055 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2056 | /// EmitCall - Generate a call of the given function, expecting the given |
| 2057 | /// result type, and using the given argument list which specifies both the |
| 2058 | /// LLVM arguments and the types they were derived from. |
Daniel Dunbar | c0ef9f5 | 2009-02-20 18:06:48 +0000 | [diff] [blame] | 2059 | /// |
Mike Stump | f71d232 | 2009-11-30 20:08:49 +0000 | [diff] [blame] | 2060 | /// \param TargetDecl - If given, the decl of the function in a direct call; |
| 2061 | /// used to set attributes on the call (noreturn, etc.). |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 2062 | RValue EmitCall(const CGFunctionInfo &FnInfo, |
| 2063 | llvm::Value *Callee, |
Anders Carlsson | f3c47c9 | 2009-12-24 19:25:24 +0000 | [diff] [blame] | 2064 | ReturnValueSlot ReturnValue, |
Daniel Dunbar | c0ef9f5 | 2009-02-20 18:06:48 +0000 | [diff] [blame] | 2065 | const CallArgList &Args, |
David Chisnall | dd5c98f | 2010-05-01 11:15:56 +0000 | [diff] [blame] | 2066 | const Decl *TargetDecl = 0, |
David Chisnall | 4b02afc | 2010-05-02 13:41:58 +0000 | [diff] [blame] | 2067 | llvm::Instruction **callOrInvoke = 0); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2068 | |
Anders Carlsson | 31777a2 | 2009-12-24 19:08:58 +0000 | [diff] [blame] | 2069 | RValue EmitCall(QualType FnType, llvm::Value *Callee, |
Anders Carlsson | d2490a9 | 2009-12-24 20:40:36 +0000 | [diff] [blame] | 2070 | ReturnValueSlot ReturnValue, |
Anders Carlsson | 9864771 | 2009-05-27 01:22:39 +0000 | [diff] [blame] | 2071 | CallExpr::const_arg_iterator ArgBeg, |
| 2072 | CallExpr::const_arg_iterator ArgEnd, |
| 2073 | const Decl *TargetDecl = 0); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2074 | RValue EmitCallExpr(const CallExpr *E, |
Anders Carlsson | d2490a9 | 2009-12-24 20:40:36 +0000 | [diff] [blame] | 2075 | ReturnValueSlot ReturnValue = ReturnValueSlot()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2076 | |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 2077 | llvm::CallInst *EmitRuntimeCall(llvm::Value *callee, |
| 2078 | const Twine &name = ""); |
| 2079 | llvm::CallInst *EmitRuntimeCall(llvm::Value *callee, |
| 2080 | ArrayRef<llvm::Value*> args, |
| 2081 | const Twine &name = ""); |
| 2082 | llvm::CallInst *EmitNounwindRuntimeCall(llvm::Value *callee, |
| 2083 | const Twine &name = ""); |
| 2084 | llvm::CallInst *EmitNounwindRuntimeCall(llvm::Value *callee, |
| 2085 | ArrayRef<llvm::Value*> args, |
| 2086 | const Twine &name = ""); |
| 2087 | |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 2088 | llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee, |
Chris Lattner | 2d3ba4f | 2011-07-23 17:14:25 +0000 | [diff] [blame] | 2089 | ArrayRef<llvm::Value *> Args, |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 2090 | const Twine &Name = ""); |
Jay Foad | 4c7d9f1 | 2011-07-15 08:37:34 +0000 | [diff] [blame] | 2091 | llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee, |
Chris Lattner | 8cc488f | 2011-07-20 07:06:53 +0000 | [diff] [blame] | 2092 | const Twine &Name = ""); |
John McCall | bd7370a | 2013-02-28 19:01:20 +0000 | [diff] [blame] | 2093 | llvm::CallSite EmitRuntimeCallOrInvoke(llvm::Value *callee, |
| 2094 | ArrayRef<llvm::Value*> args, |
| 2095 | const Twine &name = ""); |
| 2096 | llvm::CallSite EmitRuntimeCallOrInvoke(llvm::Value *callee, |
| 2097 | const Twine &name = ""); |
| 2098 | void EmitNoreturnRuntimeCallOrInvoke(llvm::Value *callee, |
| 2099 | ArrayRef<llvm::Value*> args); |
John McCall | f1549f6 | 2010-07-06 01:34:17 +0000 | [diff] [blame] | 2100 | |
Fariborz Jahanian | 2726267 | 2011-01-20 17:19:02 +0000 | [diff] [blame] | 2101 | llvm::Value *BuildAppleKextVirtualCall(const CXXMethodDecl *MD, |
| 2102 | NestedNameSpecifier *Qual, |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 2103 | llvm::Type *Ty); |
Fariborz Jahanian | ccd5259 | 2011-02-01 23:22:34 +0000 | [diff] [blame] | 2104 | |
| 2105 | llvm::Value *BuildAppleKextVirtualDestructorCall(const CXXDestructorDecl *DD, |
| 2106 | CXXDtorType Type, |
Fariborz Jahanian | 771c678 | 2011-02-03 19:27:17 +0000 | [diff] [blame] | 2107 | const CXXRecordDecl *RD); |
Anders Carlsson | 566abee | 2009-11-13 04:45:41 +0000 | [diff] [blame] | 2108 | |
Anders Carlsson | b9de2c5 | 2009-05-11 23:37:08 +0000 | [diff] [blame] | 2109 | RValue EmitCXXMemberCall(const CXXMethodDecl *MD, |
Richard Smith | 4def70d | 2012-10-09 19:52:38 +0000 | [diff] [blame] | 2110 | SourceLocation CallLoc, |
Anders Carlsson | b9de2c5 | 2009-05-11 23:37:08 +0000 | [diff] [blame] | 2111 | llvm::Value *Callee, |
Anders Carlsson | a1736c0 | 2009-12-24 21:13:40 +0000 | [diff] [blame] | 2112 | ReturnValueSlot ReturnValue, |
Anders Carlsson | b9de2c5 | 2009-05-11 23:37:08 +0000 | [diff] [blame] | 2113 | llvm::Value *This, |
Timur Iskhodzhanov | 59660c2 | 2013-02-13 08:37:51 +0000 | [diff] [blame] | 2114 | llvm::Value *ImplicitParam, |
| 2115 | QualType ImplicitParamTy, |
Anders Carlsson | b9de2c5 | 2009-05-11 23:37:08 +0000 | [diff] [blame] | 2116 | CallExpr::const_arg_iterator ArgBeg, |
| 2117 | CallExpr::const_arg_iterator ArgEnd); |
Anders Carlsson | a1736c0 | 2009-12-24 21:13:40 +0000 | [diff] [blame] | 2118 | RValue EmitCXXMemberCallExpr(const CXXMemberCallExpr *E, |
| 2119 | ReturnValueSlot ReturnValue); |
| 2120 | RValue EmitCXXMemberPointerCallExpr(const CXXMemberCallExpr *E, |
| 2121 | ReturnValueSlot ReturnValue); |
Ted Kremenek | 5549976 | 2008-06-17 02:43:46 +0000 | [diff] [blame] | 2122 | |
Anders Carlsson | a2447e0 | 2011-05-08 20:32:23 +0000 | [diff] [blame] | 2123 | llvm::Value *EmitCXXOperatorMemberCallee(const CXXOperatorCallExpr *E, |
| 2124 | const CXXMethodDecl *MD, |
| 2125 | llvm::Value *This); |
Anders Carlsson | 0f29463 | 2009-05-27 04:18:27 +0000 | [diff] [blame] | 2126 | RValue EmitCXXOperatorMemberCallExpr(const CXXOperatorCallExpr *E, |
Anders Carlsson | a1736c0 | 2009-12-24 21:13:40 +0000 | [diff] [blame] | 2127 | const CXXMethodDecl *MD, |
| 2128 | ReturnValueSlot ReturnValue); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2129 | |
Peter Collingbourne | 6c0aa5f | 2011-10-06 18:29:37 +0000 | [diff] [blame] | 2130 | RValue EmitCUDAKernelCallExpr(const CUDAKernelCallExpr *E, |
| 2131 | ReturnValueSlot ReturnValue); |
| 2132 | |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2133 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2134 | RValue EmitBuiltinExpr(const FunctionDecl *FD, |
Daniel Dunbar | ef2abfe | 2009-02-16 22:43:43 +0000 | [diff] [blame] | 2135 | unsigned BuiltinID, const CallExpr *E); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2136 | |
Anders Carlsson | a1736c0 | 2009-12-24 21:13:40 +0000 | [diff] [blame] | 2137 | RValue EmitBlockCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue); |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 2138 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2139 | /// EmitTargetBuiltinExpr - Emit the given builtin call. Returns 0 if the call |
| 2140 | /// is unhandled by the current target. |
Daniel Dunbar | f02e9dd | 2008-10-10 00:24:54 +0000 | [diff] [blame] | 2141 | llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
| 2142 | |
Tim Northover | ff920ee | 2013-05-04 07:15:13 +0000 | [diff] [blame] | 2143 | llvm::Value *EmitAArch64BuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
Chris Lattner | 2752c01 | 2010-03-03 19:03:45 +0000 | [diff] [blame] | 2144 | llvm::Value *EmitARMBuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2145 | llvm::Value *EmitNeonCall(llvm::Function *F, |
Chris Lattner | 686775d | 2011-07-20 06:58:45 +0000 | [diff] [blame] | 2146 | SmallVectorImpl<llvm::Value*> &O, |
Bob Wilson | db3d4d0 | 2010-12-08 22:37:56 +0000 | [diff] [blame] | 2147 | const char *name, |
Nate Begeman | 61eecf5 | 2010-06-14 05:21:25 +0000 | [diff] [blame] | 2148 | unsigned shift = 0, bool rightshift = false); |
Bob Wilson | cf55652 | 2010-12-07 22:40:02 +0000 | [diff] [blame] | 2149 | llvm::Value *EmitNeonSplat(llvm::Value *V, llvm::Constant *Idx); |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 2150 | llvm::Value *EmitNeonShiftVector(llvm::Value *V, llvm::Type *Ty, |
Nate Begeman | 61eecf5 | 2010-06-14 05:21:25 +0000 | [diff] [blame] | 2151 | bool negateForRightShift); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2152 | |
Bill Wendling | 795b100 | 2012-02-22 09:30:11 +0000 | [diff] [blame] | 2153 | llvm::Value *BuildVector(ArrayRef<llvm::Value*> Ops); |
Anders Carlsson | 564f1de | 2007-12-09 23:17:02 +0000 | [diff] [blame] | 2154 | llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
| 2155 | llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2156 | |
Daniel Dunbar | ed7c618 | 2008-08-20 00:28:19 +0000 | [diff] [blame] | 2157 | llvm::Value *EmitObjCProtocolExpr(const ObjCProtocolExpr *E); |
Chris Lattner | 7f02f72 | 2007-08-24 05:35:26 +0000 | [diff] [blame] | 2158 | llvm::Value *EmitObjCStringLiteral(const ObjCStringLiteral *E); |
Patrick Beard | eb382ec | 2012-04-19 00:25:12 +0000 | [diff] [blame] | 2159 | llvm::Value *EmitObjCBoxedExpr(const ObjCBoxedExpr *E); |
Ted Kremenek | ebcb57a | 2012-03-06 20:05:56 +0000 | [diff] [blame] | 2160 | llvm::Value *EmitObjCArrayLiteral(const ObjCArrayLiteral *E); |
| 2161 | llvm::Value *EmitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E); |
| 2162 | llvm::Value *EmitObjCCollectionLiteral(const Expr *E, |
| 2163 | const ObjCMethodDecl *MethodWithObjects); |
Chris Lattner | 8fdf328 | 2008-06-24 17:04:18 +0000 | [diff] [blame] | 2164 | llvm::Value *EmitObjCSelectorExpr(const ObjCSelectorExpr *E); |
John McCall | ef072fd | 2010-05-22 01:48:05 +0000 | [diff] [blame] | 2165 | RValue EmitObjCMessageExpr(const ObjCMessageExpr *E, |
| 2166 | ReturnValueSlot Return = ReturnValueSlot()); |
Chris Lattner | 8fdf328 | 2008-06-24 17:04:18 +0000 | [diff] [blame] | 2167 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2168 | /// Retrieves the default cleanup kind for an ARC cleanup. |
| 2169 | /// Except under -fobjc-arc-eh, ARC cleanups are normal-only. |
| 2170 | CleanupKind getARCCleanupKind() { |
| 2171 | return CGM.getCodeGenOpts().ObjCAutoRefCountExceptions |
| 2172 | ? NormalAndEHCleanup : NormalCleanup; |
| 2173 | } |
| 2174 | |
| 2175 | // ARC primitives. |
| 2176 | void EmitARCInitWeak(llvm::Value *value, llvm::Value *addr); |
| 2177 | void EmitARCDestroyWeak(llvm::Value *addr); |
| 2178 | llvm::Value *EmitARCLoadWeak(llvm::Value *addr); |
| 2179 | llvm::Value *EmitARCLoadWeakRetained(llvm::Value *addr); |
| 2180 | llvm::Value *EmitARCStoreWeak(llvm::Value *value, llvm::Value *addr, |
| 2181 | bool ignored); |
| 2182 | void EmitARCCopyWeak(llvm::Value *dst, llvm::Value *src); |
| 2183 | void EmitARCMoveWeak(llvm::Value *dst, llvm::Value *src); |
| 2184 | llvm::Value *EmitARCRetainAutorelease(QualType type, llvm::Value *value); |
| 2185 | llvm::Value *EmitARCRetainAutoreleaseNonBlock(llvm::Value *value); |
John McCall | 545d996 | 2011-06-25 02:11:03 +0000 | [diff] [blame] | 2186 | llvm::Value *EmitARCStoreStrong(LValue lvalue, llvm::Value *value, |
John McCall | 5b07e80 | 2013-03-13 03:10:54 +0000 | [diff] [blame] | 2187 | bool resultIgnored); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2188 | llvm::Value *EmitARCStoreStrongCall(llvm::Value *addr, llvm::Value *value, |
John McCall | 5b07e80 | 2013-03-13 03:10:54 +0000 | [diff] [blame] | 2189 | bool resultIgnored); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2190 | llvm::Value *EmitARCRetain(QualType type, llvm::Value *value); |
| 2191 | llvm::Value *EmitARCRetainNonBlock(llvm::Value *value); |
John McCall | 348f16f | 2011-10-04 06:23:45 +0000 | [diff] [blame] | 2192 | llvm::Value *EmitARCRetainBlock(llvm::Value *value, bool mandatory); |
John McCall | 5b07e80 | 2013-03-13 03:10:54 +0000 | [diff] [blame] | 2193 | void EmitARCDestroyStrong(llvm::Value *addr, ARCPreciseLifetime_t precise); |
| 2194 | void EmitARCRelease(llvm::Value *value, ARCPreciseLifetime_t precise); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2195 | llvm::Value *EmitARCAutorelease(llvm::Value *value); |
| 2196 | llvm::Value *EmitARCAutoreleaseReturnValue(llvm::Value *value); |
| 2197 | llvm::Value *EmitARCRetainAutoreleaseReturnValue(llvm::Value *value); |
| 2198 | llvm::Value *EmitARCRetainAutoreleasedReturnValue(llvm::Value *value); |
| 2199 | |
| 2200 | std::pair<LValue,llvm::Value*> |
| 2201 | EmitARCStoreAutoreleasing(const BinaryOperator *e); |
| 2202 | std::pair<LValue,llvm::Value*> |
| 2203 | EmitARCStoreStrong(const BinaryOperator *e, bool ignored); |
| 2204 | |
John McCall | 2b014d6 | 2011-10-01 10:32:24 +0000 | [diff] [blame] | 2205 | llvm::Value *EmitObjCThrowOperand(const Expr *expr); |
| 2206 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2207 | llvm::Value *EmitObjCProduceObject(QualType T, llvm::Value *Ptr); |
| 2208 | llvm::Value *EmitObjCConsumeObject(QualType T, llvm::Value *Ptr); |
| 2209 | llvm::Value *EmitObjCExtendObjectLifetime(QualType T, llvm::Value *Ptr); |
| 2210 | |
John McCall | 348f16f | 2011-10-04 06:23:45 +0000 | [diff] [blame] | 2211 | llvm::Value *EmitARCExtendBlockObject(const Expr *expr); |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2212 | llvm::Value *EmitARCRetainScalarExpr(const Expr *expr); |
| 2213 | llvm::Value *EmitARCRetainAutoreleaseScalarExpr(const Expr *expr); |
| 2214 | |
John McCall | b6a6079 | 2013-03-23 02:35:54 +0000 | [diff] [blame] | 2215 | void EmitARCIntrinsicUse(llvm::ArrayRef<llvm::Value*> values); |
| 2216 | |
John McCall | bdc4d80 | 2011-07-09 01:37:26 +0000 | [diff] [blame] | 2217 | static Destroyer destroyARCStrongImprecise; |
| 2218 | static Destroyer destroyARCStrongPrecise; |
| 2219 | static Destroyer destroyARCWeak; |
| 2220 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 2221 | void EmitObjCAutoreleasePoolPop(llvm::Value *Ptr); |
| 2222 | llvm::Value *EmitObjCAutoreleasePoolPush(); |
| 2223 | llvm::Value *EmitObjCMRRAutoreleasePoolPush(); |
| 2224 | void EmitObjCAutoreleasePoolCleanup(llvm::Value *Ptr); |
| 2225 | void EmitObjCMRRAutoreleasePoolPop(llvm::Value *Ptr); |
| 2226 | |
Richard Smith | d4ec562 | 2013-06-12 23:38:09 +0000 | [diff] [blame] | 2227 | /// \brief Emits a reference binding to the passed in expression. |
| 2228 | RValue EmitReferenceBindingToExpr(const Expr *E); |
Anders Carlsson | 3aba093 | 2010-01-31 18:34:51 +0000 | [diff] [blame] | 2229 | |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 2230 | //===--------------------------------------------------------------------===// |
Chris Lattner | bfc0c1a | 2007-08-26 23:13:56 +0000 | [diff] [blame] | 2231 | // Expression Emission |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 2232 | //===--------------------------------------------------------------------===// |
Chris Lattner | bfc0c1a | 2007-08-26 23:13:56 +0000 | [diff] [blame] | 2233 | |
| 2234 | // Expressions are broken into three classes: scalar, complex, aggregate. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2235 | |
| 2236 | /// EmitScalarExpr - Emit the computation of the specified expression of LLVM |
| 2237 | /// scalar type, returning the result. |
Anders Carlsson | 14c5cbf | 2009-08-16 07:36:22 +0000 | [diff] [blame] | 2238 | llvm::Value *EmitScalarExpr(const Expr *E , bool IgnoreResultAssign = false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2239 | |
Chris Lattner | 3707b25 | 2007-08-26 06:48:56 +0000 | [diff] [blame] | 2240 | /// EmitScalarConversion - Emit a conversion from the specified type to the |
| 2241 | /// specified destination type, both of which are LLVM scalar types. |
| 2242 | llvm::Value *EmitScalarConversion(llvm::Value *Src, QualType SrcTy, |
| 2243 | QualType DstTy); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2244 | |
Chris Lattner | 4f1a7b3 | 2007-08-26 16:34:22 +0000 | [diff] [blame] | 2245 | /// EmitComplexToScalarConversion - Emit a conversion from the specified |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2246 | /// complex type to the specified destination type, where the destination type |
| 2247 | /// is an LLVM scalar type. |
Chris Lattner | 4f1a7b3 | 2007-08-26 16:34:22 +0000 | [diff] [blame] | 2248 | llvm::Value *EmitComplexToScalarConversion(ComplexPairTy Src, QualType SrcTy, |
| 2249 | QualType DstTy); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2250 | |
| 2251 | |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 2252 | /// EmitAggExpr - Emit the computation of the specified expression |
| 2253 | /// of aggregate type. The result is computed into the given slot, |
| 2254 | /// which may be null to indicate that the value is not needed. |
John McCall | e0c1168 | 2012-07-02 23:58:38 +0000 | [diff] [blame] | 2255 | void EmitAggExpr(const Expr *E, AggValueSlot AS); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2256 | |
Daniel Dunbar | 18aba0d | 2010-02-05 19:38:31 +0000 | [diff] [blame] | 2257 | /// EmitAggExprToLValue - Emit the computation of the specified expression of |
| 2258 | /// aggregate type into a temporary LValue. |
| 2259 | LValue EmitAggExprToLValue(const Expr *E); |
| 2260 | |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 2261 | /// EmitGCMemmoveCollectable - Emit special API for structs with object |
| 2262 | /// pointers. |
| 2263 | void EmitGCMemmoveCollectable(llvm::Value *DestPtr, llvm::Value *SrcPtr, |
Fariborz Jahanian | 08c3213 | 2009-08-31 19:33:16 +0000 | [diff] [blame] | 2264 | QualType Ty); |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 2265 | |
John McCall | 0c24c80 | 2011-06-24 23:21:27 +0000 | [diff] [blame] | 2266 | /// EmitExtendGCLifetime - Given a pointer to an Objective-C object, |
| 2267 | /// make sure it survives garbage collection until this point. |
| 2268 | void EmitExtendGCLifetime(llvm::Value *object); |
| 2269 | |
Chris Lattner | b6ef18a | 2007-08-21 05:54:00 +0000 | [diff] [blame] | 2270 | /// EmitComplexExpr - Emit the computation of the specified expression of |
Chris Lattner | 23b1cdb | 2007-08-23 23:43:33 +0000 | [diff] [blame] | 2271 | /// complex type, returning the result. |
John McCall | b418d74 | 2010-11-16 10:08:07 +0000 | [diff] [blame] | 2272 | ComplexPairTy EmitComplexExpr(const Expr *E, |
| 2273 | bool IgnoreReal = false, |
| 2274 | bool IgnoreImag = false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2275 | |
John McCall | 9d232c8 | 2013-03-07 21:37:08 +0000 | [diff] [blame] | 2276 | /// EmitComplexExprIntoLValue - Emit the given expression of complex |
| 2277 | /// type and place its result into the specified l-value. |
| 2278 | void EmitComplexExprIntoLValue(const Expr *E, LValue dest, bool isInit); |
Daniel Dunbar | 7f8ea5c | 2008-08-30 05:35:15 +0000 | [diff] [blame] | 2279 | |
John McCall | 9d232c8 | 2013-03-07 21:37:08 +0000 | [diff] [blame] | 2280 | /// EmitStoreOfComplex - Store a complex number into the specified l-value. |
| 2281 | void EmitStoreOfComplex(ComplexPairTy V, LValue dest, bool isInit); |
| 2282 | |
| 2283 | /// EmitLoadOfComplex - Load a complex number from the specified l-value. |
| 2284 | ComplexPairTy EmitLoadOfComplex(LValue src); |
Chris Lattner | 2621fd1 | 2008-05-08 05:58:21 +0000 | [diff] [blame] | 2285 | |
John McCall | b6bbcc9 | 2010-10-15 04:57:14 +0000 | [diff] [blame] | 2286 | /// CreateStaticVarDecl - Create a zero-initialized LLVM global for |
| 2287 | /// a static local variable. |
Chandler Carruth | 0f30a12 | 2012-03-30 19:44:53 +0000 | [diff] [blame] | 2288 | llvm::GlobalVariable *CreateStaticVarDecl(const VarDecl &D, |
| 2289 | const char *Separator, |
| 2290 | llvm::GlobalValue::LinkageTypes Linkage); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2291 | |
Chandler Carruth | 0f30a12 | 2012-03-30 19:44:53 +0000 | [diff] [blame] | 2292 | /// AddInitializerToStaticVarDecl - Add the initializer for 'D' to the |
| 2293 | /// global variable that has already been created for it. If the initializer |
| 2294 | /// has a different type than GV does, this may free GV and return a different |
| 2295 | /// one. Otherwise it just returns GV. |
| 2296 | llvm::GlobalVariable * |
| 2297 | AddInitializerToStaticVarDecl(const VarDecl &D, |
| 2298 | llvm::GlobalVariable *GV); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2299 | |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 2300 | |
Anders Carlsson | 3b2e16b | 2009-08-08 21:45:14 +0000 | [diff] [blame] | 2301 | /// EmitCXXGlobalVarDeclInit - Create the initializer for a C++ |
| 2302 | /// variable with global storage. |
Richard Smith | 7ca4850 | 2012-02-13 22:16:19 +0000 | [diff] [blame] | 2303 | void EmitCXXGlobalVarDeclInit(const VarDecl &D, llvm::Constant *DeclPtr, |
| 2304 | bool PerformInit); |
Anders Carlsson | 3b2e16b | 2009-08-08 21:45:14 +0000 | [diff] [blame] | 2305 | |
John McCall | 20bb175 | 2012-05-01 06:13:13 +0000 | [diff] [blame] | 2306 | /// Call atexit() with a function that passes the given argument to |
| 2307 | /// the given function. |
David Blaikie | c7971a9 | 2013-08-27 23:57:18 +0000 | [diff] [blame] | 2308 | void registerGlobalDtorWithAtExit(const VarDecl &D, llvm::Constant *fn, |
| 2309 | llvm::Constant *addr); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2310 | |
John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 2311 | /// Emit code in this function to perform a guarded variable |
| 2312 | /// initialization. Guarded initializations are used when it's not |
| 2313 | /// possible to prove that an initialization will be done exactly |
| 2314 | /// once, e.g. with a static local variable or a static data member |
| 2315 | /// of a class template. |
Chandler Carruth | 0f30a12 | 2012-03-30 19:44:53 +0000 | [diff] [blame] | 2316 | void EmitCXXGuardedInit(const VarDecl &D, llvm::GlobalVariable *DeclPtr, |
Richard Smith | 7ca4850 | 2012-02-13 22:16:19 +0000 | [diff] [blame] | 2317 | bool PerformInit); |
John McCall | 5cd91b5 | 2010-09-08 01:44:27 +0000 | [diff] [blame] | 2318 | |
Daniel Dunbar | efb0fa9 | 2010-03-20 04:15:41 +0000 | [diff] [blame] | 2319 | /// GenerateCXXGlobalInitFunc - Generates code for initializing global |
| 2320 | /// variables. |
| 2321 | void GenerateCXXGlobalInitFunc(llvm::Function *Fn, |
Benjamin Kramer | c7b5f38 | 2013-04-26 21:32:52 +0000 | [diff] [blame] | 2322 | ArrayRef<llvm::Constant *> Decls, |
Richard Smith | b80a16e | 2013-04-19 16:42:07 +0000 | [diff] [blame] | 2323 | llvm::GlobalVariable *Guard = 0); |
Daniel Dunbar | efb0fa9 | 2010-03-20 04:15:41 +0000 | [diff] [blame] | 2324 | |
John McCall | 3f88f68 | 2012-04-06 18:21:03 +0000 | [diff] [blame] | 2325 | /// GenerateCXXGlobalDtorsFunc - Generates code for destroying global |
Daniel Dunbar | efb0fa9 | 2010-03-20 04:15:41 +0000 | [diff] [blame] | 2326 | /// variables. |
John McCall | 3f88f68 | 2012-04-06 18:21:03 +0000 | [diff] [blame] | 2327 | void GenerateCXXGlobalDtorsFunc(llvm::Function *Fn, |
| 2328 | const std::vector<std::pair<llvm::WeakVH, |
| 2329 | llvm::Constant*> > &DtorsAndObjects); |
Daniel Dunbar | efb0fa9 | 2010-03-20 04:15:41 +0000 | [diff] [blame] | 2330 | |
John McCall | d26bc76 | 2011-03-09 04:27:21 +0000 | [diff] [blame] | 2331 | void GenerateCXXGlobalVarDeclInitFunc(llvm::Function *Fn, |
| 2332 | const VarDecl *D, |
Richard Smith | 7ca4850 | 2012-02-13 22:16:19 +0000 | [diff] [blame] | 2333 | llvm::GlobalVariable *Addr, |
| 2334 | bool PerformInit); |
Daniel Dunbar | efb0fa9 | 2010-03-20 04:15:41 +0000 | [diff] [blame] | 2335 | |
John McCall | 558d2ab | 2010-09-15 10:14:12 +0000 | [diff] [blame] | 2336 | void EmitCXXConstructExpr(const CXXConstructExpr *E, AggValueSlot Dest); |
Fariborz Jahanian | 3499987 | 2010-11-13 21:53:34 +0000 | [diff] [blame] | 2337 | |
| 2338 | void EmitSynthesizedCXXCopyCtor(llvm::Value *Dest, llvm::Value *Src, |
Fariborz Jahanian | 830937b | 2010-12-02 17:02:11 +0000 | [diff] [blame] | 2339 | const Expr *Exp); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2340 | |
John McCall | 1a343eb | 2011-11-10 08:15:53 +0000 | [diff] [blame] | 2341 | void enterFullExpression(const ExprWithCleanups *E) { |
| 2342 | if (E->getNumObjects() == 0) return; |
| 2343 | enterNonTrivialFullExpression(E); |
| 2344 | } |
| 2345 | void enterNonTrivialFullExpression(const ExprWithCleanups *E); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2346 | |
Richard Smith | 4c71b8c | 2013-05-07 21:53:22 +0000 | [diff] [blame] | 2347 | void EmitCXXThrowExpr(const CXXThrowExpr *E, bool KeepInsertionPoint = true); |
Douglas Gregor | 1eb2e59 | 2010-05-16 00:44:00 +0000 | [diff] [blame] | 2348 | |
Eli Friedman | 4c5d8af | 2012-02-09 03:32:31 +0000 | [diff] [blame] | 2349 | void EmitLambdaExpr(const LambdaExpr *E, AggValueSlot Dest); |
| 2350 | |
Eli Friedman | 276b061 | 2011-10-11 02:20:01 +0000 | [diff] [blame] | 2351 | RValue EmitAtomicExpr(AtomicExpr *E, llvm::Value *Dest = 0); |
| 2352 | |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 2353 | //===--------------------------------------------------------------------===// |
Julien Lerouge | 77f68bb | 2011-09-09 22:41:49 +0000 | [diff] [blame] | 2354 | // Annotations Emission |
| 2355 | //===--------------------------------------------------------------------===// |
| 2356 | |
| 2357 | /// Emit an annotation call (intrinsic or builtin). |
| 2358 | llvm::Value *EmitAnnotationCall(llvm::Value *AnnotationFn, |
| 2359 | llvm::Value *AnnotatedVal, |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 2360 | StringRef AnnotationStr, |
Julien Lerouge | 77f68bb | 2011-09-09 22:41:49 +0000 | [diff] [blame] | 2361 | SourceLocation Location); |
| 2362 | |
| 2363 | /// Emit local annotations for the local variable V, declared by D. |
| 2364 | void EmitVarAnnotations(const VarDecl *D, llvm::Value *V); |
| 2365 | |
| 2366 | /// Emit field annotations for the given field & value. Returns the |
| 2367 | /// annotation result. |
| 2368 | llvm::Value *EmitFieldAnnotations(const FieldDecl *D, llvm::Value *V); |
| 2369 | |
| 2370 | //===--------------------------------------------------------------------===// |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 2371 | // Internal Helpers |
| 2372 | //===--------------------------------------------------------------------===// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2373 | |
Chris Lattner | 0946ccd | 2008-11-11 07:41:27 +0000 | [diff] [blame] | 2374 | /// ContainsLabel - Return true if the statement contains a label in it. If |
| 2375 | /// this statement is not executed normally, it not containing a label means |
| 2376 | /// that we can just remove the code. |
| 2377 | static bool ContainsLabel(const Stmt *S, bool IgnoreCaseStmts = false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2378 | |
Chris Lattner | ef425a6 | 2011-02-28 00:18:40 +0000 | [diff] [blame] | 2379 | /// containsBreak - Return true if the statement contains a break out of it. |
| 2380 | /// If the statement (recursively) contains a switch or loop with a break |
| 2381 | /// inside of it, this is fine. |
| 2382 | static bool containsBreak(const Stmt *S); |
| 2383 | |
Daniel Dunbar | 4bc0455 | 2008-11-12 10:12:14 +0000 | [diff] [blame] | 2384 | /// ConstantFoldsToSimpleInteger - If the specified expression does not fold |
Chris Lattner | c2c9001 | 2011-02-27 23:02:32 +0000 | [diff] [blame] | 2385 | /// to a constant, or if it does but contains a label, return false. If it |
| 2386 | /// constant folds return true and set the boolean result in Result. |
| 2387 | bool ConstantFoldsToSimpleInteger(const Expr *Cond, bool &Result); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2388 | |
Chris Lattner | ef425a6 | 2011-02-28 00:18:40 +0000 | [diff] [blame] | 2389 | /// ConstantFoldsToSimpleInteger - If the specified expression does not fold |
| 2390 | /// to a constant, or if it does but contains a label, return false. If it |
| 2391 | /// constant folds return true and set the folded value. |
Richard Trieu | e1ecdc1 | 2012-07-23 20:21:35 +0000 | [diff] [blame] | 2392 | bool ConstantFoldsToSimpleInteger(const Expr *Cond, llvm::APSInt &Result); |
Chris Lattner | ef425a6 | 2011-02-28 00:18:40 +0000 | [diff] [blame] | 2393 | |
Chris Lattner | 31a0984 | 2008-11-12 08:04:58 +0000 | [diff] [blame] | 2394 | /// EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g. for an |
| 2395 | /// if statement) to the specified blocks. Based on the condition, this might |
| 2396 | /// try to simplify the codegen of the conditional based on the branch. |
Chris Lattner | 9bc47e2 | 2008-11-12 07:46:33 +0000 | [diff] [blame] | 2397 | void EmitBranchOnBoolExpr(const Expr *Cond, llvm::BasicBlock *TrueBlock, |
Daniel Dunbar | 4bc0455 | 2008-11-12 10:12:14 +0000 | [diff] [blame] | 2398 | llvm::BasicBlock *FalseBlock); |
Mike Stump | be07f60 | 2009-12-14 21:58:14 +0000 | [diff] [blame] | 2399 | |
Richard Smith | 4def70d | 2012-10-09 19:52:38 +0000 | [diff] [blame] | 2400 | /// \brief Emit a description of a type in a format suitable for passing to |
| 2401 | /// a runtime sanitizer handler. |
| 2402 | llvm::Constant *EmitCheckTypeDescriptor(QualType T); |
| 2403 | |
| 2404 | /// \brief Convert a value into a format suitable for passing to a runtime |
| 2405 | /// sanitizer handler. |
| 2406 | llvm::Value *EmitCheckValue(llvm::Value *V); |
| 2407 | |
| 2408 | /// \brief Emit a description of a source location in a format suitable for |
| 2409 | /// passing to a runtime sanitizer handler. |
| 2410 | llvm::Constant *EmitCheckSourceLocation(SourceLocation Loc); |
| 2411 | |
Will Dietz | ad95481 | 2012-12-02 19:50:33 +0000 | [diff] [blame] | 2412 | /// \brief Specify under what conditions this check can be recovered |
| 2413 | enum CheckRecoverableKind { |
| 2414 | /// Always terminate program execution if this check fails |
| 2415 | CRK_Unrecoverable, |
| 2416 | /// Check supports recovering, allows user to specify which |
| 2417 | CRK_Recoverable, |
| 2418 | /// Runtime conditionally aborts, always need to support recovery. |
| 2419 | CRK_AlwaysRecoverable |
| 2420 | }; |
| 2421 | |
Richard Smith | cc30561 | 2012-11-01 22:15:34 +0000 | [diff] [blame] | 2422 | /// \brief Create a basic block that will call a handler function in a |
| 2423 | /// sanitizer runtime with the provided arguments, and create a conditional |
| 2424 | /// branch to it. |
Richard Smith | 4def70d | 2012-10-09 19:52:38 +0000 | [diff] [blame] | 2425 | void EmitCheck(llvm::Value *Checked, StringRef CheckName, |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 2426 | ArrayRef<llvm::Constant *> StaticArgs, |
| 2427 | ArrayRef<llvm::Value *> DynamicArgs, |
Will Dietz | ad95481 | 2012-12-02 19:50:33 +0000 | [diff] [blame] | 2428 | CheckRecoverableKind Recoverable); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2429 | |
Richard Smith | cc30561 | 2012-11-01 22:15:34 +0000 | [diff] [blame] | 2430 | /// \brief Create a basic block that will call the trap intrinsic, and emit a |
| 2431 | /// conditional branch to it, for the -ftrapv checks. |
Chad Rosier | 78d85b1 | 2013-01-29 23:31:22 +0000 | [diff] [blame] | 2432 | void EmitTrapCheck(llvm::Value *Checked); |
Richard Smith | cc30561 | 2012-11-01 22:15:34 +0000 | [diff] [blame] | 2433 | |
Anders Carlsson | 21c9ad9 | 2010-03-30 03:27:09 +0000 | [diff] [blame] | 2434 | /// EmitCallArg - Emit a single call argument. |
John McCall | 413ebdb | 2011-03-11 20:59:21 +0000 | [diff] [blame] | 2435 | void EmitCallArg(CallArgList &args, const Expr *E, QualType ArgType); |
Anders Carlsson | 21c9ad9 | 2010-03-30 03:27:09 +0000 | [diff] [blame] | 2436 | |
John McCall | 2736071 | 2010-05-26 22:34:26 +0000 | [diff] [blame] | 2437 | /// EmitDelegateCallArg - We are performing a delegate call; that |
| 2438 | /// is, the current function is delegating to another one. Produce |
| 2439 | /// a r-value suitable for passing the given parameter. |
John McCall | 413ebdb | 2011-03-11 20:59:21 +0000 | [diff] [blame] | 2440 | void EmitDelegateCallArg(CallArgList &args, const VarDecl *param); |
John McCall | 2736071 | 2010-05-26 22:34:26 +0000 | [diff] [blame] | 2441 | |
Peter Collingbourne | c5096cb | 2011-10-27 19:19:51 +0000 | [diff] [blame] | 2442 | /// SetFPAccuracy - Set the minimum required accuracy of the given floating |
| 2443 | /// point operation, expressed as the maximum relative error in ulp. |
Duncan Sands | 8250016 | 2012-04-10 08:23:07 +0000 | [diff] [blame] | 2444 | void SetFPAccuracy(llvm::Value *Val, float Accuracy); |
Peter Collingbourne | c5096cb | 2011-10-27 19:19:51 +0000 | [diff] [blame] | 2445 | |
Chris Lattner | 31a0984 | 2008-11-12 08:04:58 +0000 | [diff] [blame] | 2446 | private: |
Rafael Espindola | c3f8955 | 2012-03-24 16:50:34 +0000 | [diff] [blame] | 2447 | llvm::MDNode *getRangeForLoadFromType(QualType Ty); |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 2448 | void EmitReturnOfRValue(RValue RV, QualType Ty); |
| 2449 | |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 2450 | /// ExpandTypeFromArgs - Reconstruct a structure of type \arg Ty |
| 2451 | /// from function arguments into \arg Dst. See ABIArgInfo::Expand. |
| 2452 | /// |
| 2453 | /// \param AI - The first function argument of the expansion. |
| 2454 | /// \return The argument following the last expanded function |
| 2455 | /// argument. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2456 | llvm::Function::arg_iterator |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 2457 | ExpandTypeFromArgs(QualType Ty, LValue Dst, |
| 2458 | llvm::Function::arg_iterator AI); |
| 2459 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2460 | /// ExpandTypeToArgs - Expand an RValue \arg Src, with the LLVM type for \arg |
| 2461 | /// Ty, into individual arguments on the provided vector \arg Args. See |
| 2462 | /// ABIArgInfo::Expand. |
| 2463 | void ExpandTypeToArgs(QualType Ty, RValue Src, |
Craig Topper | 6b9240e | 2013-07-05 19:34:19 +0000 | [diff] [blame] | 2464 | SmallVectorImpl<llvm::Value *> &Args, |
Chris Lattner | 811bf36 | 2011-07-12 06:29:11 +0000 | [diff] [blame] | 2465 | llvm::FunctionType *IRFuncTy); |
Anders Carlsson | c8c7b18 | 2009-01-11 19:40:10 +0000 | [diff] [blame] | 2466 | |
Chad Rosier | 42b6055 | 2012-08-23 20:00:18 +0000 | [diff] [blame] | 2467 | llvm::Value* EmitAsmInput(const TargetInfo::ConstraintInfo &Info, |
Anders Carlsson | c8c7b18 | 2009-01-11 19:40:10 +0000 | [diff] [blame] | 2468 | const Expr *InputExpr, std::string &ConstraintStr); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 2469 | |
Chad Rosier | 42b6055 | 2012-08-23 20:00:18 +0000 | [diff] [blame] | 2470 | llvm::Value* EmitAsmInputLValue(const TargetInfo::ConstraintInfo &Info, |
Eli Friedman | 6d7cfd7 | 2010-07-16 00:55:21 +0000 | [diff] [blame] | 2471 | LValue InputValue, QualType InputType, |
| 2472 | std::string &ConstraintStr); |
| 2473 | |
Anders Carlsson | 0139bb9 | 2009-04-08 20:47:54 +0000 | [diff] [blame] | 2474 | /// EmitCallArgs - Emit call arguments for a function. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2475 | /// The CallArgTypeInfo parameter is used for iterating over the known |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2476 | /// argument types of the function being called. |
| 2477 | template<typename T> |
| 2478 | void EmitCallArgs(CallArgList& Args, const T* CallArgTypeInfo, |
Anders Carlsson | 0139bb9 | 2009-04-08 20:47:54 +0000 | [diff] [blame] | 2479 | CallExpr::const_arg_iterator ArgBeg, |
Adrian Prantl | b0e603c | 2013-07-26 20:42:57 +0000 | [diff] [blame] | 2480 | CallExpr::const_arg_iterator ArgEnd, |
| 2481 | bool ForceColumnInfo = false) { |
| 2482 | CGDebugInfo *DI = getDebugInfo(); |
| 2483 | SourceLocation CallLoc; |
| 2484 | if (DI) CallLoc = DI->getLocation(); |
| 2485 | |
| 2486 | CallExpr::const_arg_iterator Arg = ArgBeg; |
Anders Carlsson | 0139bb9 | 2009-04-08 20:47:54 +0000 | [diff] [blame] | 2487 | |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2488 | // First, use the argument types that the type info knows about |
| 2489 | if (CallArgTypeInfo) { |
| 2490 | for (typename T::arg_type_iterator I = CallArgTypeInfo->arg_type_begin(), |
| 2491 | E = CallArgTypeInfo->arg_type_end(); I != E; ++I, ++Arg) { |
Eli Friedman | 44b0a3e | 2009-11-18 03:42:04 +0000 | [diff] [blame] | 2492 | assert(Arg != ArgEnd && "Running over edge of argument list!"); |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2493 | QualType ArgType = *I; |
Fariborz Jahanian | 745da3a | 2010-09-24 17:30:16 +0000 | [diff] [blame] | 2494 | #ifndef NDEBUG |
| 2495 | QualType ActualArgType = Arg->getType(); |
| 2496 | if (ArgType->isPointerType() && ActualArgType->isPointerType()) { |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2497 | QualType ActualBaseType = |
Fariborz Jahanian | 745da3a | 2010-09-24 17:30:16 +0000 | [diff] [blame] | 2498 | ActualArgType->getAs<PointerType>()->getPointeeType(); |
Michael J. Spencer | 9cac494 | 2010-10-19 06:39:39 +0000 | [diff] [blame] | 2499 | QualType ArgBaseType = |
Fariborz Jahanian | 745da3a | 2010-09-24 17:30:16 +0000 | [diff] [blame] | 2500 | ArgType->getAs<PointerType>()->getPointeeType(); |
| 2501 | if (ArgBaseType->isVariableArrayType()) { |
| 2502 | if (const VariableArrayType *VAT = |
| 2503 | getContext().getAsVariableArrayType(ActualBaseType)) { |
| 2504 | if (!VAT->getSizeExpr()) |
| 2505 | ActualArgType = ArgType; |
| 2506 | } |
| 2507 | } |
| 2508 | } |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2509 | assert(getContext().getCanonicalType(ArgType.getNonReferenceType()). |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2510 | getTypePtr() == |
Fariborz Jahanian | 745da3a | 2010-09-24 17:30:16 +0000 | [diff] [blame] | 2511 | getContext().getCanonicalType(ActualArgType).getTypePtr() && |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2512 | "type mismatch in call argument!"); |
Fariborz Jahanian | 745da3a | 2010-09-24 17:30:16 +0000 | [diff] [blame] | 2513 | #endif |
John McCall | 413ebdb | 2011-03-11 20:59:21 +0000 | [diff] [blame] | 2514 | EmitCallArg(Args, *Arg, ArgType); |
Adrian Prantl | b0e603c | 2013-07-26 20:42:57 +0000 | [diff] [blame] | 2515 | |
| 2516 | // Each argument expression could modify the debug |
| 2517 | // location. Restore it. |
| 2518 | if (DI) DI->EmitLocation(Builder, CallLoc, ForceColumnInfo); |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2519 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2520 | |
| 2521 | // 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] | 2522 | // variadic function. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2523 | assert((Arg == ArgEnd || CallArgTypeInfo->isVariadic()) && |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2524 | "Extra arguments in non-variadic function!"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2525 | |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2526 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2527 | |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2528 | // If we still have any arguments, emit them using the type of the argument. |
Adrian Prantl | b0e603c | 2013-07-26 20:42:57 +0000 | [diff] [blame] | 2529 | for (; Arg != ArgEnd; ++Arg) { |
John McCall | 413ebdb | 2011-03-11 20:59:21 +0000 | [diff] [blame] | 2530 | EmitCallArg(Args, *Arg, Arg->getType()); |
Adrian Prantl | b0e603c | 2013-07-26 20:42:57 +0000 | [diff] [blame] | 2531 | |
| 2532 | // Restore the debug location. |
| 2533 | if (DI) DI->EmitLocation(Builder, CallLoc, ForceColumnInfo); |
| 2534 | } |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 2535 | } |
John McCall | 492c4f9 | 2010-03-03 04:15:11 +0000 | [diff] [blame] | 2536 | |
| 2537 | const TargetCodeGenInfo &getTargetHooks() const { |
| 2538 | return CGM.getTargetCodeGenInfo(); |
| 2539 | } |
John McCall | 744016d | 2010-07-06 23:57:41 +0000 | [diff] [blame] | 2540 | |
| 2541 | void EmitDeclMetadata(); |
John McCall | f0c11f7 | 2011-03-31 08:03:29 +0000 | [diff] [blame] | 2542 | |
| 2543 | CodeGenModule::ByrefHelpers * |
Chris Lattner | 2acc6e3 | 2011-07-18 04:24:23 +0000 | [diff] [blame] | 2544 | buildByrefHelpers(llvm::StructType &byrefType, |
John McCall | f0c11f7 | 2011-03-31 08:03:29 +0000 | [diff] [blame] | 2545 | const AutoVarEmission &emission); |
Dan Gohman | b49bd27 | 2012-02-16 00:57:37 +0000 | [diff] [blame] | 2546 | |
| 2547 | void AddObjCARCExceptionMetadata(llvm::Instruction *Inst); |
Jay Foad | f4c3db1 | 2012-03-02 18:34:30 +0000 | [diff] [blame] | 2548 | |
Eli Friedman | ea93e40 | 2012-08-23 03:10:17 +0000 | [diff] [blame] | 2549 | /// GetPointeeAlignment - Given an expression with a pointer type, emit the |
| 2550 | /// value and compute our best estimate of the alignment of the pointee. |
| 2551 | std::pair<llvm::Value*, unsigned> EmitPointerWithAlignment(const Expr *Addr); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2552 | }; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 2553 | |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 2554 | /// Helper class with most of the code for saving a value for a |
| 2555 | /// conditional expression cleanup. |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 2556 | struct DominatingLLVMValue { |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 2557 | typedef llvm::PointerIntPair<llvm::Value*, 1, bool> saved_type; |
| 2558 | |
| 2559 | /// Answer whether the given value needs extra work to be saved. |
| 2560 | static bool needsSaving(llvm::Value *value) { |
| 2561 | // If it's not an instruction, we don't need to save. |
| 2562 | if (!isa<llvm::Instruction>(value)) return false; |
| 2563 | |
| 2564 | // If it's an instruction in the entry block, we don't need to save. |
| 2565 | llvm::BasicBlock *block = cast<llvm::Instruction>(value)->getParent(); |
| 2566 | return (block != &block->getParent()->getEntryBlock()); |
| 2567 | } |
| 2568 | |
| 2569 | /// Try to save the given value. |
| 2570 | static saved_type save(CodeGenFunction &CGF, llvm::Value *value) { |
| 2571 | if (!needsSaving(value)) return saved_type(value, false); |
| 2572 | |
| 2573 | // Otherwise we need an alloca. |
| 2574 | llvm::Value *alloca = |
| 2575 | CGF.CreateTempAlloca(value->getType(), "cond-cleanup.save"); |
| 2576 | CGF.Builder.CreateStore(value, alloca); |
| 2577 | |
| 2578 | return saved_type(alloca, true); |
| 2579 | } |
| 2580 | |
| 2581 | static llvm::Value *restore(CodeGenFunction &CGF, saved_type value) { |
| 2582 | if (!value.getInt()) return value.getPointer(); |
| 2583 | return CGF.Builder.CreateLoad(value.getPointer()); |
| 2584 | } |
| 2585 | }; |
| 2586 | |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 2587 | /// A partial specialization of DominatingValue for llvm::Values that |
| 2588 | /// might be llvm::Instructions. |
| 2589 | template <class T> struct DominatingPointer<T,true> : DominatingLLVMValue { |
| 2590 | typedef T *type; |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 2591 | static type restore(CodeGenFunction &CGF, saved_type value) { |
John McCall | 804b807 | 2011-01-28 10:53:53 +0000 | [diff] [blame] | 2592 | return static_cast<T*>(DominatingLLVMValue::restore(CGF, value)); |
| 2593 | } |
| 2594 | }; |
| 2595 | |
| 2596 | /// A specialization of DominatingValue for RValue. |
| 2597 | template <> struct DominatingValue<RValue> { |
| 2598 | typedef RValue type; |
| 2599 | class saved_type { |
| 2600 | enum Kind { ScalarLiteral, ScalarAddress, AggregateLiteral, |
| 2601 | AggregateAddress, ComplexAddress }; |
| 2602 | |
| 2603 | llvm::Value *Value; |
| 2604 | Kind K; |
| 2605 | saved_type(llvm::Value *v, Kind k) : Value(v), K(k) {} |
| 2606 | |
| 2607 | public: |
| 2608 | static bool needsSaving(RValue value); |
| 2609 | static saved_type save(CodeGenFunction &CGF, RValue value); |
| 2610 | RValue restore(CodeGenFunction &CGF); |
| 2611 | |
| 2612 | // implementations in CGExprCXX.cpp |
| 2613 | }; |
| 2614 | |
| 2615 | static bool needsSaving(type value) { |
| 2616 | return saved_type::needsSaving(value); |
| 2617 | } |
| 2618 | static saved_type save(CodeGenFunction &CGF, type value) { |
| 2619 | return saved_type::save(CGF, value); |
| 2620 | } |
| 2621 | static type restore(CodeGenFunction &CGF, saved_type value) { |
| 2622 | return value.restore(CGF); |
John McCall | 150b462 | 2011-01-26 04:00:11 +0000 | [diff] [blame] | 2623 | } |
| 2624 | }; |
| 2625 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2626 | } // end namespace CodeGen |
| 2627 | } // end namespace clang |
Fariborz Jahanian | 4e1524b | 2012-01-29 20:27:13 +0000 | [diff] [blame] | 2628 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 2629 | #endif |