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 | |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 17 | #include "clang/AST/Type.h" |
Argyrios Kyrtzidis | e3a09e6 | 2008-09-10 02:36:38 +0000 | [diff] [blame] | 18 | #include "clang/AST/ExprCXX.h" |
Ted Kremenek | 5549976 | 2008-06-17 02:43:46 +0000 | [diff] [blame] | 19 | #include "clang/AST/ExprObjC.h" |
Chris Lattner | 481769b | 2009-03-31 22:17:44 +0000 | [diff] [blame] | 20 | #include "clang/Basic/TargetInfo.h" |
| 21 | #include "llvm/ADT/DenseMap.h" |
| 22 | #include "llvm/ADT/SmallVector.h" |
| 23 | #include "llvm/Support/ValueHandle.h" |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 24 | #include <map> |
Owen Anderson | 6924382 | 2009-07-13 04:10:07 +0000 | [diff] [blame] | 25 | #include "CodeGenModule.h" |
Mike Stump | 96bd13a | 2009-03-04 15:32:52 +0000 | [diff] [blame] | 26 | #include "CGBlocks.h" |
Daniel Dunbar | 45d196b | 2008-11-01 01:53:16 +0000 | [diff] [blame] | 27 | #include "CGBuilder.h" |
Daniel Dunbar | 0dbe227 | 2008-09-08 21:33:45 +0000 | [diff] [blame] | 28 | #include "CGCall.h" |
Anders Carlsson | b14095a | 2009-04-17 00:06:03 +0000 | [diff] [blame] | 29 | #include "CGCXX.h" |
Daniel Dunbar | 8f2926b | 2008-08-23 03:46:30 +0000 | [diff] [blame] | 30 | #include "CGValue.h" |
| 31 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 32 | namespace llvm { |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 33 | class BasicBlock; |
Owen Anderson | 47a434f | 2009-08-05 23:18:46 +0000 | [diff] [blame] | 34 | struct LLVMContext; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 35 | class Module; |
Daniel Dunbar | 898d508 | 2008-09-30 01:06:03 +0000 | [diff] [blame] | 36 | class SwitchInst; |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 37 | class Value; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 38 | } |
| 39 | |
| 40 | namespace clang { |
| 41 | class ASTContext; |
Anders Carlsson | 7267c16 | 2009-05-29 21:03:38 +0000 | [diff] [blame] | 42 | class CXXDestructorDecl; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 43 | class Decl; |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 44 | class EnumConstantDecl; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 45 | class FunctionDecl; |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 46 | class FunctionProtoType; |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 47 | class LabelStmt; |
Fariborz Jahanian | 679a502 | 2009-01-10 21:06:09 +0000 | [diff] [blame] | 48 | class ObjCContainerDecl; |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 49 | class ObjCInterfaceDecl; |
| 50 | class ObjCIvarDecl; |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 51 | class ObjCMethodDecl; |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 52 | class ObjCImplementationDecl; |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 53 | class ObjCPropertyImplDecl; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 54 | class TargetInfo; |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 55 | class VarDecl; |
Chris Lattner | 16f0049 | 2009-04-26 01:32:48 +0000 | [diff] [blame] | 56 | class ObjCForCollectionStmt; |
| 57 | class ObjCAtTryStmt; |
| 58 | class ObjCAtThrowStmt; |
| 59 | class ObjCAtSynchronizedStmt; |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 60 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 61 | namespace CodeGen { |
| 62 | class CodeGenModule; |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 63 | class CodeGenTypes; |
Anders Carlsson | e896d98 | 2009-02-13 08:11:52 +0000 | [diff] [blame] | 64 | class CGDebugInfo; |
Daniel Dunbar | bb36d33 | 2009-02-02 21:43:58 +0000 | [diff] [blame] | 65 | class CGFunctionInfo; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 66 | class CGRecordLayout; |
| 67 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 68 | /// CodeGenFunction - This class organizes the per-function state that is used |
| 69 | /// while generating LLVM code. |
Mike Stump | 2a99814 | 2009-03-04 18:17:45 +0000 | [diff] [blame] | 70 | class CodeGenFunction : public BlockFunction { |
Anders Carlsson | 8a219ce | 2009-02-24 04:21:31 +0000 | [diff] [blame] | 71 | CodeGenFunction(const CodeGenFunction&); // DO NOT IMPLEMENT |
| 72 | void operator=(const CodeGenFunction&); // DO NOT IMPLEMENT |
Chris Lattner | bfc0c1a | 2007-08-26 23:13:56 +0000 | [diff] [blame] | 73 | public: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 74 | CodeGenModule &CGM; // Per-module state. |
| 75 | TargetInfo &Target; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 76 | |
Chris Lattner | 58dee10 | 2007-08-21 16:57:55 +0000 | [diff] [blame] | 77 | typedef std::pair<llvm::Value *, llvm::Value *> ComplexPairTy; |
Daniel Dunbar | 45d196b | 2008-11-01 01:53:16 +0000 | [diff] [blame] | 78 | CGBuilderTy Builder; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 79 | |
Chris Lattner | b5437d2 | 2009-04-23 05:30:27 +0000 | [diff] [blame] | 80 | /// CurFuncDecl - Holds the Decl for the current function or ObjC method. |
| 81 | /// This excludes BlockDecls. |
Chris Lattner | 4111024 | 2008-06-17 18:05:57 +0000 | [diff] [blame] | 82 | const Decl *CurFuncDecl; |
Chris Lattner | b5437d2 | 2009-04-23 05:30:27 +0000 | [diff] [blame] | 83 | /// CurCodeDecl - This is the inner-most code context, which includes blocks. |
| 84 | const Decl *CurCodeDecl; |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 85 | const CGFunctionInfo *CurFnInfo; |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 86 | QualType FnRetTy; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 87 | llvm::Function *CurFn; |
| 88 | |
Daniel Dunbar | 5ca2084 | 2008-09-09 21:00:17 +0000 | [diff] [blame] | 89 | /// ReturnBlock - Unified return block. |
| 90 | llvm::BasicBlock *ReturnBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 91 | /// ReturnValue - The temporary alloca to hold the return value. This is null |
| 92 | /// iff the function has no return value. |
Daniel Dunbar | 5ca2084 | 2008-09-09 21:00:17 +0000 | [diff] [blame] | 93 | llvm::Instruction *ReturnValue; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 94 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 95 | /// AllocaInsertPoint - This is an instruction in the entry block before which |
| 96 | /// we prefer to insert allocas. |
Chris Lattner | 481769b | 2009-03-31 22:17:44 +0000 | [diff] [blame] | 97 | llvm::AssertingVH<llvm::Instruction> AllocaInsertPt; |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 98 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 99 | const llvm::Type *LLVMIntTy; |
Hartmut Kaiser | 7b66000 | 2007-10-17 15:00:17 +0000 | [diff] [blame] | 100 | uint32_t LLVMPointerWidth; |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 101 | |
| 102 | public: |
Anders Carlsson | fa1f756 | 2009-02-10 06:07:49 +0000 | [diff] [blame] | 103 | /// ObjCEHValueStack - Stack of Objective-C exception values, used for |
| 104 | /// rethrows. |
Anders Carlsson | 273558f | 2009-02-07 21:37:21 +0000 | [diff] [blame] | 105 | llvm::SmallVector<llvm::Value*, 8> ObjCEHValueStack; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 106 | |
Anders Carlsson | 6fc5591 | 2009-02-08 03:22:36 +0000 | [diff] [blame] | 107 | /// PushCleanupBlock - Push a new cleanup entry on the stack and set the |
| 108 | /// passed in block as the cleanup block. |
| 109 | void PushCleanupBlock(llvm::BasicBlock *CleanupBlock); |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 110 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 111 | /// CleanupBlockInfo - A struct representing a popped cleanup block. |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 112 | struct CleanupBlockInfo { |
| 113 | /// CleanupBlock - the cleanup block |
| 114 | llvm::BasicBlock *CleanupBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 115 | |
| 116 | /// SwitchBlock - the block (if any) containing the switch instruction used |
| 117 | /// for jumping to the final destination. |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 118 | llvm::BasicBlock *SwitchBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 119 | |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 120 | /// EndBlock - the default destination for the switch instruction. |
| 121 | llvm::BasicBlock *EndBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 122 | |
| 123 | CleanupBlockInfo(llvm::BasicBlock *cb, llvm::BasicBlock *sb, |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 124 | llvm::BasicBlock *eb) |
| 125 | : CleanupBlock(cb), SwitchBlock(sb), EndBlock(eb) {} |
| 126 | }; |
| 127 | |
| 128 | /// PopCleanupBlock - Will pop the cleanup entry on the stack, process all |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 129 | /// branch fixups and return a block info struct with the switch block and end |
| 130 | /// block. |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 131 | CleanupBlockInfo PopCleanupBlock(); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 132 | |
| 133 | /// CleanupScope - RAII object that will create a cleanup block and set the |
| 134 | /// insert point to that block. When destructed, it sets the insert point to |
| 135 | /// the previous block and pushes a new cleanup entry on the stack. |
Anders Carlsson | 0d5c685 | 2009-02-07 23:30:41 +0000 | [diff] [blame] | 136 | class CleanupScope { |
| 137 | CodeGenFunction& CGF; |
| 138 | llvm::BasicBlock *CurBB; |
Anders Carlsson | 6fc5591 | 2009-02-08 03:22:36 +0000 | [diff] [blame] | 139 | llvm::BasicBlock *CleanupBB; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 140 | |
Anders Carlsson | 0d5c685 | 2009-02-07 23:30:41 +0000 | [diff] [blame] | 141 | public: |
| 142 | CleanupScope(CodeGenFunction &cgf) |
| 143 | : CGF(cgf), CurBB(CGF.Builder.GetInsertBlock()) { |
Anders Carlsson | 6fc5591 | 2009-02-08 03:22:36 +0000 | [diff] [blame] | 144 | CleanupBB = CGF.createBasicBlock("cleanup"); |
| 145 | CGF.Builder.SetInsertPoint(CleanupBB); |
Anders Carlsson | 0d5c685 | 2009-02-07 23:30:41 +0000 | [diff] [blame] | 146 | } |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 147 | |
Anders Carlsson | 0d5c685 | 2009-02-07 23:30:41 +0000 | [diff] [blame] | 148 | ~CleanupScope() { |
Anders Carlsson | 6fc5591 | 2009-02-08 03:22:36 +0000 | [diff] [blame] | 149 | CGF.PushCleanupBlock(CleanupBB); |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 150 | // FIXME: This is silly, move this into the builder. |
| 151 | if (CurBB) |
| 152 | CGF.Builder.SetInsertPoint(CurBB); |
| 153 | else |
| 154 | CGF.Builder.ClearInsertionPoint(); |
Anders Carlsson | 0d5c685 | 2009-02-07 23:30:41 +0000 | [diff] [blame] | 155 | } |
| 156 | }; |
| 157 | |
Anders Carlsson | c71c845 | 2009-02-07 23:50:39 +0000 | [diff] [blame] | 158 | /// EmitCleanupBlocks - Takes the old cleanup stack size and emits the cleanup |
| 159 | /// blocks that have been added. |
| 160 | void EmitCleanupBlocks(size_t OldCleanupStackSize); |
| 161 | |
Anders Carlsson | 87eaf17 | 2009-02-08 00:50:42 +0000 | [diff] [blame] | 162 | /// EmitBranchThroughCleanup - Emit a branch from the current insert block |
| 163 | /// through the cleanup handling code (if any) and then on to \arg Dest. |
| 164 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 165 | /// FIXME: Maybe this should really be in EmitBranch? Don't we always want |
Anders Carlsson | 87eaf17 | 2009-02-08 00:50:42 +0000 | [diff] [blame] | 166 | /// this behavior for branches? |
| 167 | void EmitBranchThroughCleanup(llvm::BasicBlock *Dest); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 168 | |
Anders Carlsson | 1d84750 | 2009-06-04 02:22:12 +0000 | [diff] [blame] | 169 | /// PushConditionalTempDestruction - Should be called before a conditional |
| 170 | /// part of an expression is emitted. For example, before the RHS of the |
| 171 | /// expression below is emitted: |
| 172 | /// |
| 173 | /// b && f(T()); |
| 174 | /// |
| 175 | /// This is used to make sure that any temporaryes created in the conditional |
| 176 | /// branch are only destroyed if the branch is taken. |
| 177 | void PushConditionalTempDestruction(); |
| 178 | |
| 179 | /// PopConditionalTempDestruction - Should be called after a conditional |
| 180 | /// part of an expression has been emitted. |
| 181 | void PopConditionalTempDestruction(); |
| 182 | |
Chris Lattner | 7f02f72 | 2007-08-24 05:35:26 +0000 | [diff] [blame] | 183 | private: |
Anders Carlsson | e896d98 | 2009-02-13 08:11:52 +0000 | [diff] [blame] | 184 | CGDebugInfo* DebugInfo; |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 185 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 186 | /// LabelIDs - Track arbitrary ids assigned to labels for use in implementing |
| 187 | /// the GCC address-of-label extension and indirect goto. IDs are assigned to |
| 188 | /// labels inside getIDForAddrOfLabel(). |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 189 | std::map<const LabelStmt*, unsigned> LabelIDs; |
| 190 | |
| 191 | /// IndirectSwitches - Record the list of switches for indirect |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 192 | /// gotos. Emission of the actual switching code needs to be delayed until all |
| 193 | /// AddrLabelExprs have been seen. |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 194 | std::vector<llvm::SwitchInst*> IndirectSwitches; |
| 195 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 196 | /// LocalDeclMap - This keeps track of the LLVM allocas or globals for local C |
| 197 | /// decls. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 198 | llvm::DenseMap<const Decl*, llvm::Value*> LocalDeclMap; |
| 199 | |
| 200 | /// LabelMap - This keeps track of the LLVM basic block for each C label. |
| 201 | llvm::DenseMap<const LabelStmt*, llvm::BasicBlock*> LabelMap; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 202 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 203 | // BreakContinueStack - This keeps track of where break and continue |
Anders Carlsson | e4b6d34 | 2009-02-10 05:52:02 +0000 | [diff] [blame] | 204 | // statements should jump to. |
Chris Lattner | da13870 | 2007-07-16 21:28:45 +0000 | [diff] [blame] | 205 | struct BreakContinue { |
Anders Carlsson | e4b6d34 | 2009-02-10 05:52:02 +0000 | [diff] [blame] | 206 | BreakContinue(llvm::BasicBlock *bb, llvm::BasicBlock *cb) |
| 207 | : BreakBlock(bb), ContinueBlock(cb) {} |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 208 | |
Chris Lattner | da13870 | 2007-07-16 21:28:45 +0000 | [diff] [blame] | 209 | llvm::BasicBlock *BreakBlock; |
| 210 | llvm::BasicBlock *ContinueBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 211 | }; |
Chris Lattner | da13870 | 2007-07-16 21:28:45 +0000 | [diff] [blame] | 212 | llvm::SmallVector<BreakContinue, 8> BreakContinueStack; |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 213 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 214 | /// SwitchInsn - This is nearest current switch instruction. It is null if if |
| 215 | /// current context is not in a switch. |
Devang Patel | 51b09f2 | 2007-10-04 23:45:31 +0000 | [diff] [blame] | 216 | llvm::SwitchInst *SwitchInsn; |
| 217 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 218 | /// CaseRangeBlock - This block holds if condition check for last case |
Devang Patel | 80fd5f9 | 2007-10-09 17:08:50 +0000 | [diff] [blame] | 219 | /// statement range in current switch instruction. |
Devang Patel | c049e4f | 2007-10-08 20:57:48 +0000 | [diff] [blame] | 220 | llvm::BasicBlock *CaseRangeBlock; |
| 221 | |
Daniel Dunbar | 9834ffb | 2009-02-23 17:26:39 +0000 | [diff] [blame] | 222 | /// InvokeDest - This is the nearest exception target for calls |
| 223 | /// which can unwind, when exceptions are being used. |
| 224 | llvm::BasicBlock *InvokeDest; |
| 225 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 226 | // VLASizeMap - This keeps track of the associated size for each VLA type. |
| 227 | // FIXME: Maybe this could be a stack of maps that is pushed/popped as we |
| 228 | // enter/leave scopes. |
Anders Carlsson | dcc90d8 | 2008-12-12 07:19:02 +0000 | [diff] [blame] | 229 | llvm::DenseMap<const VariableArrayType*, llvm::Value*> VLASizeMap; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 230 | |
Anders Carlsson | 4cc1a47 | 2009-02-09 20:20:56 +0000 | [diff] [blame] | 231 | /// DidCallStackSave - Whether llvm.stacksave has been called. Used to avoid |
| 232 | /// calling llvm.stacksave for multiple VLAs in the same scope. |
| 233 | bool DidCallStackSave; |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 234 | |
Anders Carlsson | 6ccc476 | 2009-02-07 22:53:43 +0000 | [diff] [blame] | 235 | struct CleanupEntry { |
| 236 | /// CleanupBlock - The block of code that does the actual cleanup. |
| 237 | llvm::BasicBlock *CleanupBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 238 | |
Anders Carlsson | 6ccc476 | 2009-02-07 22:53:43 +0000 | [diff] [blame] | 239 | /// Blocks - Basic blocks that were emitted in the current cleanup scope. |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 240 | std::vector<llvm::BasicBlock *> Blocks; |
Anders Carlsson | 6ccc476 | 2009-02-07 22:53:43 +0000 | [diff] [blame] | 241 | |
| 242 | /// BranchFixups - Branch instructions to basic blocks that haven't been |
| 243 | /// inserted into the current function yet. |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 244 | std::vector<llvm::BranchInst *> BranchFixups; |
Anders Carlsson | 6ccc476 | 2009-02-07 22:53:43 +0000 | [diff] [blame] | 245 | |
| 246 | explicit CleanupEntry(llvm::BasicBlock *cb) |
| 247 | : CleanupBlock(cb) {} |
| 248 | }; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 249 | |
Anders Carlsson | 6ccc476 | 2009-02-07 22:53:43 +0000 | [diff] [blame] | 250 | /// CleanupEntries - Stack of cleanup entries. |
| 251 | llvm::SmallVector<CleanupEntry, 8> CleanupEntries; |
| 252 | |
Anders Carlsson | bd6fa3d | 2009-02-08 00:16:35 +0000 | [diff] [blame] | 253 | typedef llvm::DenseMap<llvm::BasicBlock*, size_t> BlockScopeMap; |
| 254 | |
| 255 | /// BlockScopes - Map of which "cleanup scope" scope basic blocks have. |
| 256 | BlockScopeMap BlockScopes; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 257 | |
Anders Carlsson | 2b77ba8 | 2009-04-04 20:47:02 +0000 | [diff] [blame] | 258 | /// CXXThisDecl - When parsing an C++ function, this will hold the implicit |
| 259 | /// 'this' declaration. |
| 260 | ImplicitParamDecl *CXXThisDecl; |
| 261 | |
Anders Carlsson | e8b5578 | 2009-06-03 18:54:26 +0000 | [diff] [blame] | 262 | /// CXXLiveTemporaryInfo - Holds information about a live C++ temporary. |
| 263 | struct CXXLiveTemporaryInfo { |
| 264 | /// Temporary - The live temporary. |
| 265 | const CXXTemporary *Temporary; |
| 266 | |
| 267 | /// ThisPtr - The pointer to the temporary. |
| 268 | llvm::Value *ThisPtr; |
| 269 | |
| 270 | /// DtorBlock - The destructor block. |
| 271 | llvm::BasicBlock *DtorBlock; |
| 272 | |
| 273 | /// CondPtr - If this is a conditional temporary, this is the pointer to |
| 274 | /// the condition variable that states whether the destructor should be |
| 275 | /// called or not. |
| 276 | llvm::Value *CondPtr; |
| 277 | |
| 278 | CXXLiveTemporaryInfo(const CXXTemporary *temporary, |
Anders Carlsson | f4b8fea | 2009-06-03 19:05:16 +0000 | [diff] [blame] | 279 | llvm::Value *thisptr, llvm::BasicBlock *dtorblock, |
| 280 | llvm::Value *condptr) |
Anders Carlsson | e8b5578 | 2009-06-03 18:54:26 +0000 | [diff] [blame] | 281 | : Temporary(temporary), ThisPtr(thisptr), DtorBlock(dtorblock), |
| 282 | CondPtr(condptr) { } |
| 283 | }; |
| 284 | |
| 285 | llvm::SmallVector<CXXLiveTemporaryInfo, 4> LiveTemporaries; |
Anders Carlsson | 1d84750 | 2009-06-04 02:22:12 +0000 | [diff] [blame] | 286 | |
| 287 | /// ConditionalTempDestructionStack - Contains the number of live temporaries |
| 288 | /// when PushConditionalTempDestruction was called. This is used so that |
| 289 | /// we know how many temporaries were created by a certain expression. |
| 290 | llvm::SmallVector<size_t, 4> ConditionalTempDestructionStack; |
Anders Carlsson | 543ac0c | 2009-05-31 00:34:10 +0000 | [diff] [blame] | 291 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 292 | public: |
| 293 | CodeGenFunction(CodeGenModule &cgm); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 294 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 295 | ASTContext &getContext() const; |
Anders Carlsson | e896d98 | 2009-02-13 08:11:52 +0000 | [diff] [blame] | 296 | CGDebugInfo *getDebugInfo() { return DebugInfo; } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 297 | |
Daniel Dunbar | 9834ffb | 2009-02-23 17:26:39 +0000 | [diff] [blame] | 298 | llvm::BasicBlock *getInvokeDest() { return InvokeDest; } |
| 299 | void setInvokeDest(llvm::BasicBlock *B) { InvokeDest = B; } |
| 300 | |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 301 | llvm::LLVMContext &getLLVMContext() { return VMContext; } |
Owen Anderson | 6924382 | 2009-07-13 04:10:07 +0000 | [diff] [blame] | 302 | |
Daniel Dunbar | 9834ffb | 2009-02-23 17:26:39 +0000 | [diff] [blame] | 303 | //===--------------------------------------------------------------------===// |
| 304 | // Objective-C |
| 305 | //===--------------------------------------------------------------------===// |
| 306 | |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 307 | void GenerateObjCMethod(const ObjCMethodDecl *OMD); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 308 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 309 | void StartObjCMethod(const ObjCMethodDecl *MD, |
Fariborz Jahanian | 679a502 | 2009-01-10 21:06:09 +0000 | [diff] [blame] | 310 | const ObjCContainerDecl *CD); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 311 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 312 | /// GenerateObjCGetter - Synthesize an Objective-C property getter function. |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 313 | void GenerateObjCGetter(ObjCImplementationDecl *IMP, |
| 314 | const ObjCPropertyImplDecl *PID); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 315 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 316 | /// GenerateObjCSetter - Synthesize an Objective-C property setter function |
| 317 | /// for the given property. |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 318 | void GenerateObjCSetter(ObjCImplementationDecl *IMP, |
| 319 | const ObjCPropertyImplDecl *PID); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 320 | |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 321 | //===--------------------------------------------------------------------===// |
| 322 | // Block Bits |
| 323 | //===--------------------------------------------------------------------===// |
| 324 | |
Mike Stump | 8a2b4b1 | 2009-02-25 23:33:13 +0000 | [diff] [blame] | 325 | llvm::Value *BuildBlockLiteralTmp(const BlockExpr *); |
Mike Stump | a803b0e | 2009-03-25 17:58:24 +0000 | [diff] [blame] | 326 | llvm::Constant *BuildDescriptorBlockDecl(bool BlockHasCopyDispose, |
| 327 | uint64_t Size, |
Mike Stump | 0892099 | 2009-03-07 02:35:30 +0000 | [diff] [blame] | 328 | const llvm::StructType *, |
| 329 | std::vector<HelperInfo> *); |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 330 | |
Chris Lattner | 161d36d | 2009-02-28 19:01:03 +0000 | [diff] [blame] | 331 | llvm::Function *GenerateBlockFunction(const BlockExpr *BExpr, |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 332 | const BlockInfo& Info, |
Mike Stump | 6cc88f7 | 2009-03-20 21:53:12 +0000 | [diff] [blame] | 333 | const Decl *OuterFuncDecl, |
Mike Stump | 7f28a9c | 2009-03-13 23:34:28 +0000 | [diff] [blame] | 334 | llvm::DenseMap<const Decl*, llvm::Value*> ldm, |
Mike Stump | 8a2b4b1 | 2009-02-25 23:33:13 +0000 | [diff] [blame] | 335 | uint64_t &Size, uint64_t &Align, |
Mike Stump | 00470a1 | 2009-03-05 08:32:30 +0000 | [diff] [blame] | 336 | llvm::SmallVector<const Expr *, 8> &subBlockDeclRefDecls, |
| 337 | bool &subBlockHasCopyDispose); |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 338 | |
Mike Stump | 6cc88f7 | 2009-03-20 21:53:12 +0000 | [diff] [blame] | 339 | void BlockForwardSelf(); |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 340 | llvm::Value *LoadBlockStruct(); |
| 341 | |
Mike Stump | a99038c | 2009-02-28 09:07:16 +0000 | [diff] [blame] | 342 | llvm::Value *GetAddrOfBlockDecl(const BlockDeclRefExpr *E); |
Mike Stump | 30395dd | 2009-02-14 22:49:33 +0000 | [diff] [blame] | 343 | |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 344 | const llvm::Type *BuildByRefType(QualType Ty, uint64_t Align); |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 345 | |
Daniel Dunbar | bd012ff | 2008-07-29 23:18:29 +0000 | [diff] [blame] | 346 | void GenerateCode(const FunctionDecl *FD, |
| 347 | llvm::Function *Fn); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 348 | void StartFunction(const Decl *D, QualType RetTy, |
Daniel Dunbar | 7c08651 | 2008-09-09 23:14:03 +0000 | [diff] [blame] | 349 | llvm::Function *Fn, |
Daniel Dunbar | 2284ac9 | 2008-10-18 18:22:23 +0000 | [diff] [blame] | 350 | const FunctionArgList &Args, |
| 351 | SourceLocation StartLoc); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 352 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 353 | /// EmitReturnBlock - Emit the unified return block, trying to avoid its |
| 354 | /// emission when possible. |
Daniel Dunbar | 1c1d607 | 2009-01-26 23:27:52 +0000 | [diff] [blame] | 355 | void EmitReturnBlock(); |
| 356 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 357 | /// FinishFunction - Complete IR generation of the current function. It is |
| 358 | /// 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] | 359 | void FinishFunction(SourceLocation EndLoc=SourceLocation()); |
Daniel Dunbar | 17b708d | 2008-09-09 23:27:19 +0000 | [diff] [blame] | 360 | |
Mike Stump | 738f8c2 | 2009-07-31 23:15:31 +0000 | [diff] [blame] | 361 | llvm::Constant *GenerateRtti(const CXXRecordDecl *RD); |
Mike Stump | 8a12b56 | 2009-08-06 15:50:11 +0000 | [diff] [blame] | 362 | void GenerateVtableForBase(const CXXRecordDecl *RD, |
Mike Stump | e1be2b1 | 2009-08-06 21:49:36 +0000 | [diff] [blame] | 363 | const CXXRecordDecl *Class, |
| 364 | llvm::Constant *rtti, |
| 365 | std::vector<llvm::Constant *> &methods, |
Mike Stump | 02cf1e2 | 2009-08-06 23:48:32 +0000 | [diff] [blame] | 366 | bool isPrimary = false, |
| 367 | bool ForVirtualBase = false); |
Mike Stump | f121677 | 2009-07-31 18:25:34 +0000 | [diff] [blame] | 368 | llvm::Value *GenerateVtable(const CXXRecordDecl *RD); |
| 369 | |
Fariborz Jahanian | ab3c0a2 | 2009-07-20 22:35:22 +0000 | [diff] [blame] | 370 | void EmitCtorPrologue(const CXXConstructorDecl *CD); |
Fariborz Jahanian | 426cc38 | 2009-07-30 17:49:11 +0000 | [diff] [blame] | 371 | |
Fariborz Jahanian | ca28361 | 2009-08-07 23:51:33 +0000 | [diff] [blame^] | 372 | void EmitCopyCtorBody(const CXXConstructorDecl *CD, |
| 373 | const FunctionArgList &Args); |
Fariborz Jahanian | 97a9375 | 2009-08-07 20:22:40 +0000 | [diff] [blame] | 374 | |
Fariborz Jahanian | 426cc38 | 2009-07-30 17:49:11 +0000 | [diff] [blame] | 375 | /// EmitDtorEpilogue - Emit all code that comes at the end of class's |
| 376 | /// destructor. This is to call destructors on members and base classes |
| 377 | /// in reverse order of their construction. |
| 378 | void EmitDtorEpilogue(const CXXDestructorDecl *DD); |
| 379 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 380 | /// EmitFunctionProlog - Emit the target specific LLVM code to load the |
| 381 | /// arguments for the given function. This is also responsible for naming the |
| 382 | /// LLVM function arguments. |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 383 | void EmitFunctionProlog(const CGFunctionInfo &FI, |
| 384 | llvm::Function *Fn, |
Daniel Dunbar | 17b708d | 2008-09-09 23:27:19 +0000 | [diff] [blame] | 385 | const FunctionArgList &Args); |
| 386 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 387 | /// EmitFunctionEpilog - Emit the target specific LLVM code to return the |
| 388 | /// given temporary. |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 389 | void EmitFunctionEpilog(const CGFunctionInfo &FI, llvm::Value *ReturnValue); |
Daniel Dunbar | 17b708d | 2008-09-09 23:27:19 +0000 | [diff] [blame] | 390 | |
Daniel Dunbar | 8b1a343 | 2009-02-03 23:03:55 +0000 | [diff] [blame] | 391 | const llvm::Type *ConvertTypeForMem(QualType T); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 392 | const llvm::Type *ConvertType(QualType T); |
Chris Lattner | c8aa5f1 | 2008-04-04 04:07:35 +0000 | [diff] [blame] | 393 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 394 | /// LoadObjCSelf - Load the value of self. This function is only valid while |
| 395 | /// generating code for an Objective-C method. |
Chris Lattner | c8aa5f1 | 2008-04-04 04:07:35 +0000 | [diff] [blame] | 396 | llvm::Value *LoadObjCSelf(); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 397 | |
| 398 | /// TypeOfSelfObject - Return type of object that this self represents. |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 399 | QualType TypeOfSelfObject(); |
Chris Lattner | 4111024 | 2008-06-17 18:05:57 +0000 | [diff] [blame] | 400 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 401 | /// hasAggregateLLVMType - Return true if the specified AST type will map into |
| 402 | /// an aggregate LLVM type or is void. |
| 403 | static bool hasAggregateLLVMType(QualType T); |
Daniel Dunbar | 55e8742 | 2008-11-11 02:29:29 +0000 | [diff] [blame] | 404 | |
| 405 | /// createBasicBlock - Create an LLVM basic block. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 406 | llvm::BasicBlock *createBasicBlock(const char *Name="", |
Daniel Dunbar | 55e8742 | 2008-11-11 02:29:29 +0000 | [diff] [blame] | 407 | llvm::Function *Parent=0, |
| 408 | llvm::BasicBlock *InsertBefore=0) { |
Daniel Dunbar | 29ea672 | 2008-11-12 00:01:12 +0000 | [diff] [blame] | 409 | #ifdef NDEBUG |
| 410 | return llvm::BasicBlock::Create("", Parent, InsertBefore); |
| 411 | #else |
Daniel Dunbar | 55e8742 | 2008-11-11 02:29:29 +0000 | [diff] [blame] | 412 | return llvm::BasicBlock::Create(Name, Parent, InsertBefore); |
Daniel Dunbar | 29ea672 | 2008-11-12 00:01:12 +0000 | [diff] [blame] | 413 | #endif |
Daniel Dunbar | 55e8742 | 2008-11-11 02:29:29 +0000 | [diff] [blame] | 414 | } |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 415 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 416 | /// getBasicBlockForLabel - Return the LLVM basicblock that the specified |
| 417 | /// label maps to. |
| 418 | llvm::BasicBlock *getBasicBlockForLabel(const LabelStmt *S); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 419 | |
Daniel Dunbar | aa5bd87 | 2009-04-01 04:37:47 +0000 | [diff] [blame] | 420 | /// SimplifyForwardingBlocks - If the given basic block is only a |
| 421 | /// branch to another basic block, simplify it. This assumes that no |
| 422 | /// other code could potentially reference the basic block. |
| 423 | void SimplifyForwardingBlocks(llvm::BasicBlock *BB); |
| 424 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 425 | /// EmitBlock - Emit the given block \arg BB and set it as the insert point, |
| 426 | /// adding a fall-through branch from the current insert block if |
| 427 | /// necessary. It is legal to call this function even if there is no current |
| 428 | /// insertion point. |
Daniel Dunbar | a0c21a8 | 2008-11-13 01:24:05 +0000 | [diff] [blame] | 429 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 430 | /// IsFinished - If true, indicates that the caller has finished emitting |
| 431 | /// branches to the given block and does not expect to emit code into it. This |
| 432 | /// means the block can be ignored if it is unreachable. |
Daniel Dunbar | a0c21a8 | 2008-11-13 01:24:05 +0000 | [diff] [blame] | 433 | void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false); |
Daniel Dunbar | 824e3bd | 2008-11-11 04:34:23 +0000 | [diff] [blame] | 434 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 435 | /// EmitBranch - Emit a branch to the specified basic block from the current |
| 436 | /// insert block, taking care to avoid creation of branches from dummy |
| 437 | /// blocks. It is legal to call this function even if there is no current |
| 438 | /// insertion point. |
Daniel Dunbar | 5e08ad3 | 2008-11-11 22:06:59 +0000 | [diff] [blame] | 439 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 440 | /// This function clears the current insertion point. The caller should follow |
| 441 | /// calls to this function with calls to Emit*Block prior to generation new |
| 442 | /// code. |
Daniel Dunbar | d57a871 | 2008-11-11 09:41:28 +0000 | [diff] [blame] | 443 | void EmitBranch(llvm::BasicBlock *Block); |
| 444 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 445 | /// HaveInsertPoint - True if an insertion point is defined. If not, this |
| 446 | /// indicates that the current code being emitted is unreachable. |
| 447 | bool HaveInsertPoint() const { |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 448 | return Builder.GetInsertBlock() != 0; |
| 449 | } |
| 450 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 451 | /// EnsureInsertPoint - Ensure that an insertion point is defined so that |
| 452 | /// emitted IR has a place to go. Note that by definition, if this function |
| 453 | /// creates a block then that block is unreachable; callers may do better to |
| 454 | /// detect when no insertion point is defined and simply skip IR generation. |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 455 | void EnsureInsertPoint() { |
| 456 | if (!HaveInsertPoint()) |
| 457 | EmitBlock(createBasicBlock()); |
| 458 | } |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 459 | |
Daniel Dunbar | 488e993 | 2008-08-16 00:56:44 +0000 | [diff] [blame] | 460 | /// ErrorUnsupported - Print out an error that codegen doesn't support the |
Chris Lattner | dc5e826 | 2007-12-02 01:43:38 +0000 | [diff] [blame] | 461 | /// specified stmt yet. |
Daniel Dunbar | 90df4b6 | 2008-09-04 03:43:08 +0000 | [diff] [blame] | 462 | void ErrorUnsupported(const Stmt *S, const char *Type, |
| 463 | bool OmitOnError=false); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 464 | |
| 465 | //===--------------------------------------------------------------------===// |
| 466 | // Helpers |
| 467 | //===--------------------------------------------------------------------===// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 468 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 469 | /// CreateTempAlloca - This creates a alloca and inserts it into the entry |
| 470 | /// block. |
| 471 | llvm::AllocaInst *CreateTempAlloca(const llvm::Type *Ty, |
| 472 | const char *Name = "tmp"); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 473 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 474 | /// EvaluateExprAsBool - Perform the usual unary conversions on the specified |
| 475 | /// expression and compare the result against zero, returning an Int1Ty value. |
| 476 | llvm::Value *EvaluateExprAsBool(const Expr *E); |
| 477 | |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 478 | /// EmitAnyExpr - Emit code to compute the specified expression which can have |
| 479 | /// any type. The result is returned as an RValue struct. If this is an |
| 480 | /// aggregate expression, the aggloc/agglocvolatile arguments indicate where |
| 481 | /// the result should be returned. |
Mike Stump | 49d1cd5 | 2009-05-26 22:03:21 +0000 | [diff] [blame] | 482 | /// |
| 483 | /// \param IgnoreResult - True if the resulting value isn't used. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 484 | RValue EmitAnyExpr(const Expr *E, llvm::Value *AggLoc = 0, |
Mike Stump | 49d1cd5 | 2009-05-26 22:03:21 +0000 | [diff] [blame] | 485 | bool isAggLocVolatile = false, bool IgnoreResult = false); |
Devang Patel | d9363c3 | 2007-09-28 21:49:18 +0000 | [diff] [blame] | 486 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 487 | // EmitVAListRef - Emit a "reference" to a va_list; this is either the address |
| 488 | // 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] | 489 | llvm::Value *EmitVAListRef(const Expr *E); |
| 490 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 491 | /// EmitAnyExprToTemp - Similary to EmitAnyExpr(), however, the result will |
| 492 | /// always be accessible even if no aggregate location is provided. |
| 493 | RValue EmitAnyExprToTemp(const Expr *E, llvm::Value *AggLoc = 0, |
Daniel Dunbar | 46f45b9 | 2008-09-09 01:06:48 +0000 | [diff] [blame] | 494 | bool isAggLocVolatile = false); |
| 495 | |
Mike Stump | 27fe2e6 | 2009-05-23 22:29:41 +0000 | [diff] [blame] | 496 | /// EmitAggregateCopy - Emit an aggrate copy. |
| 497 | /// |
| 498 | /// \param isVolatile - True iff either the source or the destination is |
| 499 | /// volatile. |
Daniel Dunbar | 7482d12 | 2008-09-09 20:49:46 +0000 | [diff] [blame] | 500 | void EmitAggregateCopy(llvm::Value *DestPtr, llvm::Value *SrcPtr, |
Mike Stump | 27fe2e6 | 2009-05-23 22:29:41 +0000 | [diff] [blame] | 501 | QualType EltTy, bool isVolatile=false); |
Daniel Dunbar | 7482d12 | 2008-09-09 20:49:46 +0000 | [diff] [blame] | 502 | |
| 503 | void EmitAggregateClear(llvm::Value *DestPtr, QualType Ty); |
| 504 | |
Devang Patel | 51b09f2 | 2007-10-04 23:45:31 +0000 | [diff] [blame] | 505 | /// StartBlock - Start new block named N. If insert block is a dummy block |
| 506 | /// then reuse it. |
| 507 | void StartBlock(const char *N); |
| 508 | |
Devang Patel | 88a981b | 2007-11-01 19:11:01 +0000 | [diff] [blame] | 509 | /// getCGRecordLayout - Return record layout info. |
| 510 | const CGRecordLayout *getCGRecordLayout(CodeGenTypes &CGT, QualType RTy); |
Lauro Ramos Venancio | 8137335 | 2008-02-26 21:41:45 +0000 | [diff] [blame] | 511 | |
| 512 | /// GetAddrOfStaticLocalVar - Return the address of a static local variable. |
Steve Naroff | 248a753 | 2008-04-15 22:42:06 +0000 | [diff] [blame] | 513 | llvm::Constant *GetAddrOfStaticLocalVar(const VarDecl *BVD); |
Dan Gohman | 4f8d123 | 2008-05-22 00:50:06 +0000 | [diff] [blame] | 514 | |
Anders Carlsson | dde0a94 | 2008-09-11 09:15:33 +0000 | [diff] [blame] | 515 | /// GetAddrOfLocalVar - Return the address of a local variable. |
| 516 | llvm::Value *GetAddrOfLocalVar(const VarDecl *VD); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 517 | |
Dan Gohman | 4f8d123 | 2008-05-22 00:50:06 +0000 | [diff] [blame] | 518 | /// getAccessedFieldNo - Given an encoded value and a result number, return |
| 519 | /// the input field number being accessed. |
| 520 | static unsigned getAccessedFieldNo(unsigned Idx, const llvm::Constant *Elts); |
| 521 | |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 522 | unsigned GetIDForAddrOfLabel(const LabelStmt *L); |
| 523 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 524 | /// EmitMemSetToZero - Generate code to memset a value of the given type to 0. |
Anders Carlsson | 3d8400d | 2008-08-30 19:51:14 +0000 | [diff] [blame] | 525 | void EmitMemSetToZero(llvm::Value *DestPtr, QualType Ty); |
Anders Carlsson | ddf7cac | 2008-11-04 05:30:00 +0000 | [diff] [blame] | 526 | |
| 527 | // EmitVAArg - Generate code to get an argument from the passed in pointer |
| 528 | // and update it accordingly. The return value is a pointer to the argument. |
| 529 | // 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] | 530 | // instruction in LLVM instead once it works well enough. |
Anders Carlsson | ddf7cac | 2008-11-04 05:30:00 +0000 | [diff] [blame] | 531 | llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty); |
Anders Carlsson | f666b77 | 2008-12-20 20:27:15 +0000 | [diff] [blame] | 532 | |
Anders Carlsson | 60d3541 | 2008-12-20 20:46:34 +0000 | [diff] [blame] | 533 | // EmitVLASize - Generate code for any VLA size expressions that might occur |
| 534 | // in a variably modified type. If Ty is a VLA, will return the value that |
| 535 | // corresponds to the size in bytes of the VLA type. Will return 0 otherwise. |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 536 | /// |
| 537 | /// This function can be called with a null (unreachable) insert point. |
Anders Carlsson | 60d3541 | 2008-12-20 20:46:34 +0000 | [diff] [blame] | 538 | llvm::Value *EmitVLASize(QualType Ty); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 539 | |
Anders Carlsson | dcc90d8 | 2008-12-12 07:19:02 +0000 | [diff] [blame] | 540 | // GetVLASize - Returns an LLVM value that corresponds to the size in bytes |
| 541 | // of a variable length array type. |
| 542 | llvm::Value *GetVLASize(const VariableArrayType *); |
| 543 | |
Anders Carlsson | 5f4307b | 2009-04-14 16:58:56 +0000 | [diff] [blame] | 544 | /// LoadCXXThis - Load the value of 'this'. This function is only valid while |
| 545 | /// generating code for an C++ member function. |
| 546 | llvm::Value *LoadCXXThis(); |
| 547 | |
Fariborz Jahanian | 9e809e7 | 2009-07-28 17:38:28 +0000 | [diff] [blame] | 548 | /// AddressCXXOfBaseClass - This function will add the necessary delta |
| 549 | /// to the load of 'this' and returns address of the base class. |
| 550 | // FIXME. This currently only does a derived to non-virtual base conversion. |
| 551 | // Other kinds of conversions will come later. |
| 552 | llvm::Value *AddressCXXOfBaseClass(llvm::Value *ThisValue, |
Fariborz Jahanian | 6d0bdaa | 2009-07-28 18:09:28 +0000 | [diff] [blame] | 553 | const CXXRecordDecl *ClassDecl, |
| 554 | const CXXRecordDecl *BaseClassDecl); |
Fariborz Jahanian | 9e809e7 | 2009-07-28 17:38:28 +0000 | [diff] [blame] | 555 | |
Fariborz Jahanian | ca28361 | 2009-08-07 23:51:33 +0000 | [diff] [blame^] | 556 | void EmitClassMemberwiseCopy(llvm::Value *DestValue, llvm::Value *SrcValue, |
| 557 | const CXXRecordDecl *ClassDecl, |
| 558 | const CXXRecordDecl *BaseClassDecl); |
| 559 | |
Anders Carlsson | b14095a | 2009-04-17 00:06:03 +0000 | [diff] [blame] | 560 | void EmitCXXConstructorCall(const CXXConstructorDecl *D, CXXCtorType Type, |
| 561 | llvm::Value *This, |
| 562 | CallExpr::const_arg_iterator ArgBeg, |
| 563 | CallExpr::const_arg_iterator ArgEnd); |
| 564 | |
Anders Carlsson | 7267c16 | 2009-05-29 21:03:38 +0000 | [diff] [blame] | 565 | void EmitCXXDestructorCall(const CXXDestructorDecl *D, CXXDtorType Type, |
| 566 | llvm::Value *This); |
| 567 | |
Anders Carlsson | 543ac0c | 2009-05-31 00:34:10 +0000 | [diff] [blame] | 568 | void PushCXXTemporary(const CXXTemporary *Temporary, llvm::Value *Ptr); |
Anders Carlsson | f4b8fea | 2009-06-03 19:05:16 +0000 | [diff] [blame] | 569 | void PopCXXTemporary(); |
Anders Carlsson | 543ac0c | 2009-05-31 00:34:10 +0000 | [diff] [blame] | 570 | |
Anders Carlsson | a00703d | 2009-05-31 01:40:14 +0000 | [diff] [blame] | 571 | llvm::Value *EmitCXXNewExpr(const CXXNewExpr *E); |
| 572 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 573 | //===--------------------------------------------------------------------===// |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 574 | // Declaration Emission |
| 575 | //===--------------------------------------------------------------------===// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 576 | |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 577 | /// EmitDecl - Emit a declaration. |
| 578 | /// |
| 579 | /// This function can be called with a null (unreachable) insert point. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 580 | void EmitDecl(const Decl &D); |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 581 | |
| 582 | /// EmitBlockVarDecl - Emit a block variable declaration. |
| 583 | /// |
| 584 | /// This function can be called with a null (unreachable) insert point. |
Steve Naroff | 248a753 | 2008-04-15 22:42:06 +0000 | [diff] [blame] | 585 | void EmitBlockVarDecl(const VarDecl &D); |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 586 | |
| 587 | /// EmitLocalBlockVarDecl - Emit a local block variable declaration. |
| 588 | /// |
| 589 | /// This function can be called with a null (unreachable) insert point. |
Steve Naroff | 248a753 | 2008-04-15 22:42:06 +0000 | [diff] [blame] | 590 | void EmitLocalBlockVarDecl(const VarDecl &D); |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 591 | |
Steve Naroff | 248a753 | 2008-04-15 22:42:06 +0000 | [diff] [blame] | 592 | void EmitStaticBlockVarDecl(const VarDecl &D); |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 593 | |
| 594 | /// EmitParmDecl - Emit a ParmVarDecl or an ImplicitParamDecl. |
| 595 | void EmitParmDecl(const VarDecl &D, llvm::Value *Arg); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 596 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 597 | //===--------------------------------------------------------------------===// |
| 598 | // Statement Emission |
| 599 | //===--------------------------------------------------------------------===// |
| 600 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 601 | /// EmitStopPoint - Emit a debug stoppoint if we are emitting debug info. |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 602 | void EmitStopPoint(const Stmt *S); |
| 603 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 604 | /// EmitStmt - Emit the code for the statement \arg S. It is legal to call |
| 605 | /// this function even if there is no current insertion point. |
| 606 | /// |
| 607 | /// This function may clear the current insertion point; callers should use |
| 608 | /// EnsureInsertPoint if they wish to subsequently generate code without first |
| 609 | /// calling EmitBlock, EmitBranch, or EmitStmt. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 610 | void EmitStmt(const Stmt *S); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 611 | |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 612 | /// EmitSimpleStmt - Try to emit a "simple" statement which does not |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 613 | /// necessarily require an insertion point or debug information; typically |
| 614 | /// because the statement amounts to a jump or a container of other |
| 615 | /// statements. |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 616 | /// |
| 617 | /// \return True if the statement was handled. |
| 618 | bool EmitSimpleStmt(const Stmt *S); |
| 619 | |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 620 | RValue EmitCompoundStmt(const CompoundStmt &S, bool GetLast = false, |
| 621 | llvm::Value *AggLoc = 0, bool isAggVol = false); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 622 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 623 | /// EmitLabel - Emit the block for the given label. It is legal to call this |
| 624 | /// function even if there is no current insertion point. |
Chris Lattner | 91d723d | 2008-07-26 20:23:23 +0000 | [diff] [blame] | 625 | void EmitLabel(const LabelStmt &S); // helper for EmitLabelStmt. |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 626 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 627 | void EmitLabelStmt(const LabelStmt &S); |
| 628 | void EmitGotoStmt(const GotoStmt &S); |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 629 | void EmitIndirectGotoStmt(const IndirectGotoStmt &S); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 630 | void EmitIfStmt(const IfStmt &S); |
| 631 | void EmitWhileStmt(const WhileStmt &S); |
| 632 | void EmitDoStmt(const DoStmt &S); |
| 633 | void EmitForStmt(const ForStmt &S); |
| 634 | void EmitReturnStmt(const ReturnStmt &S); |
| 635 | void EmitDeclStmt(const DeclStmt &S); |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 636 | void EmitBreakStmt(const BreakStmt &S); |
| 637 | void EmitContinueStmt(const ContinueStmt &S); |
Devang Patel | 51b09f2 | 2007-10-04 23:45:31 +0000 | [diff] [blame] | 638 | void EmitSwitchStmt(const SwitchStmt &S); |
| 639 | void EmitDefaultStmt(const DefaultStmt &S); |
| 640 | void EmitCaseStmt(const CaseStmt &S); |
Devang Patel | c049e4f | 2007-10-08 20:57:48 +0000 | [diff] [blame] | 641 | void EmitCaseStmtRange(const CaseStmt &S); |
Anders Carlsson | fb1aeb8 | 2008-02-05 16:35:33 +0000 | [diff] [blame] | 642 | void EmitAsmStmt(const AsmStmt &S); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 643 | |
Anders Carlsson | 3d8400d | 2008-08-30 19:51:14 +0000 | [diff] [blame] | 644 | void EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S); |
Anders Carlsson | 64d5d6c | 2008-09-09 10:04:29 +0000 | [diff] [blame] | 645 | void EmitObjCAtTryStmt(const ObjCAtTryStmt &S); |
| 646 | void EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S); |
Chris Lattner | 10cac6f | 2008-11-15 21:26:17 +0000 | [diff] [blame] | 647 | void EmitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt &S); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 648 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 649 | //===--------------------------------------------------------------------===// |
| 650 | // LValue Expression Emission |
| 651 | //===--------------------------------------------------------------------===// |
| 652 | |
Daniel Dunbar | 13e8173 | 2009-02-05 07:09:07 +0000 | [diff] [blame] | 653 | /// GetUndefRValue - Get an appropriate 'undef' rvalue for the given type. |
| 654 | RValue GetUndefRValue(QualType Ty); |
| 655 | |
Daniel Dunbar | ce1d38b | 2009-01-09 16:50:52 +0000 | [diff] [blame] | 656 | /// EmitUnsupportedRValue - Emit a dummy r-value using the type of E |
| 657 | /// and issue an ErrorUnsupported style diagnostic (using the |
| 658 | /// provided Name). |
| 659 | RValue EmitUnsupportedRValue(const Expr *E, |
| 660 | const char *Name); |
| 661 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 662 | /// EmitUnsupportedLValue - Emit a dummy l-value using the type of E and issue |
| 663 | /// an ErrorUnsupported style diagnostic (using the provided Name). |
Daniel Dunbar | 6ba82a4 | 2008-08-25 20:45:57 +0000 | [diff] [blame] | 664 | LValue EmitUnsupportedLValue(const Expr *E, |
| 665 | const char *Name); |
| 666 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 667 | /// EmitLValue - Emit code to compute a designator that specifies the location |
| 668 | /// of the expression. |
| 669 | /// |
| 670 | /// This can return one of two things: a simple address or a bitfield |
| 671 | /// reference. In either case, the LLVM Value* in the LValue structure is |
| 672 | /// guaranteed to be an LLVM pointer type. |
| 673 | /// |
| 674 | /// If this returns a bitfield reference, nothing about the pointee type of |
| 675 | /// the LLVM value is known: For example, it may not be a pointer to an |
| 676 | /// integer. |
| 677 | /// |
| 678 | /// If this returns a normal address, and if the lvalue's C type is fixed |
| 679 | /// size, this method guarantees that the returned pointer type will point to |
| 680 | /// an LLVM type of the same size of the lvalue's type. If the lvalue has a |
| 681 | /// variable length type, this is not possible. |
| 682 | /// |
| 683 | LValue EmitLValue(const Expr *E); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 684 | |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 685 | /// EmitLoadOfScalar - Load a scalar value from an address, taking |
| 686 | /// care to appropriately convert from the memory representation to |
| 687 | /// the LLVM value representation. |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 688 | llvm::Value *EmitLoadOfScalar(llvm::Value *Addr, bool Volatile, |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 689 | QualType Ty); |
| 690 | |
| 691 | /// EmitStoreOfScalar - Store a scalar value to an address, taking |
| 692 | /// care to appropriately convert from the memory representation to |
| 693 | /// the LLVM value representation. |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 694 | void EmitStoreOfScalar(llvm::Value *Value, llvm::Value *Addr, |
Anders Carlsson | b4aa466 | 2009-05-19 18:50:41 +0000 | [diff] [blame] | 695 | bool Volatile, QualType Ty); |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 696 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 697 | /// EmitLoadOfLValue - Given an expression that represents a value lvalue, |
| 698 | /// this method emits the address of the lvalue, then loads the result as an |
| 699 | /// rvalue, returning the rvalue. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 700 | RValue EmitLoadOfLValue(LValue V, QualType LVType); |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 701 | RValue EmitLoadOfExtVectorElementLValue(LValue V, QualType LVType); |
Lauro Ramos Venancio | 3b8c22d | 2008-01-22 20:17:04 +0000 | [diff] [blame] | 702 | RValue EmitLoadOfBitfieldLValue(LValue LV, QualType ExprType); |
Daniel Dunbar | 85c59ed | 2008-08-29 08:11:39 +0000 | [diff] [blame] | 703 | RValue EmitLoadOfPropertyRefLValue(LValue LV, QualType ExprType); |
Fariborz Jahanian | 43f4470 | 2008-11-22 22:30:21 +0000 | [diff] [blame] | 704 | RValue EmitLoadOfKVCRefLValue(LValue LV, QualType ExprType); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 705 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 706 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 707 | /// EmitStoreThroughLValue - Store the specified rvalue into the specified |
| 708 | /// lvalue, where both are guaranteed to the have the same type, and that type |
| 709 | /// is 'Ty'. |
| 710 | void EmitStoreThroughLValue(RValue Src, LValue Dst, QualType Ty); |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 711 | void EmitStoreThroughExtVectorComponentLValue(RValue Src, LValue Dst, |
| 712 | QualType Ty); |
Daniel Dunbar | 85c59ed | 2008-08-29 08:11:39 +0000 | [diff] [blame] | 713 | void EmitStoreThroughPropertyRefLValue(RValue Src, LValue Dst, QualType Ty); |
Fariborz Jahanian | 43f4470 | 2008-11-22 22:30:21 +0000 | [diff] [blame] | 714 | void EmitStoreThroughKVCRefLValue(RValue Src, LValue Dst, QualType Ty); |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 715 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 716 | /// EmitStoreThroughLValue - Store Src into Dst with same constraints as |
| 717 | /// EmitStoreThroughLValue. |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 718 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 719 | /// \param Result [out] - If non-null, this will be set to a Value* for the |
| 720 | /// bit-field contents after the store, appropriate for use as the result of |
| 721 | /// an assignment to the bit-field. |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 722 | void EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst, QualType Ty, |
| 723 | llvm::Value **Result=0); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 724 | |
Christopher Lamb | 22c940e | 2007-12-29 05:02:41 +0000 | [diff] [blame] | 725 | // Note: only availabe for agg return types |
Daniel Dunbar | 80e62c2 | 2008-09-04 03:20:13 +0000 | [diff] [blame] | 726 | LValue EmitBinaryOperatorLValue(const BinaryOperator *E); |
Daniel Dunbar | 5b5c9ef | 2009-02-11 20:59:32 +0000 | [diff] [blame] | 727 | // Note: only available for agg return types |
Christopher Lamb | 22c940e | 2007-12-29 05:02:41 +0000 | [diff] [blame] | 728 | LValue EmitCallExprLValue(const CallExpr *E); |
Daniel Dunbar | 5b5c9ef | 2009-02-11 20:59:32 +0000 | [diff] [blame] | 729 | // Note: only available for agg return types |
| 730 | LValue EmitVAArgExprLValue(const VAArgExpr *E); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 731 | LValue EmitDeclRefLValue(const DeclRefExpr *E); |
| 732 | LValue EmitStringLiteralLValue(const StringLiteral *E); |
Chris Lattner | eaf2bb8 | 2009-02-24 22:18:39 +0000 | [diff] [blame] | 733 | LValue EmitObjCEncodeExprLValue(const ObjCEncodeExpr *E); |
Daniel Dunbar | 662b71e | 2008-10-17 21:58:32 +0000 | [diff] [blame] | 734 | LValue EmitPredefinedFunctionName(unsigned Type); |
Chris Lattner | d9f6910 | 2008-08-10 01:53:14 +0000 | [diff] [blame] | 735 | LValue EmitPredefinedLValue(const PredefinedExpr *E); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 736 | LValue EmitUnaryOpLValue(const UnaryOperator *E); |
| 737 | LValue EmitArraySubscriptExpr(const ArraySubscriptExpr *E); |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 738 | LValue EmitExtVectorElementExpr(const ExtVectorElementExpr *E); |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 739 | LValue EmitMemberExpr(const MemberExpr *E); |
Eli Friedman | 06e863f | 2008-05-13 23:18:27 +0000 | [diff] [blame] | 740 | LValue EmitCompoundLiteralLValue(const CompoundLiteralExpr *E); |
Daniel Dunbar | 9034558 | 2009-03-24 02:38:23 +0000 | [diff] [blame] | 741 | LValue EmitConditionalOperator(const ConditionalOperator *E); |
Chris Lattner | 75dfeda | 2009-03-18 18:28:57 +0000 | [diff] [blame] | 742 | LValue EmitCastLValue(const CastExpr *E); |
Eli Friedman | 472778e | 2008-02-09 08:50:58 +0000 | [diff] [blame] | 743 | |
Daniel Dunbar | 2a03192 | 2009-04-22 05:08:15 +0000 | [diff] [blame] | 744 | llvm::Value *EmitIvarOffset(const ObjCInterfaceDecl *Interface, |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 745 | const ObjCIvarDecl *Ivar); |
Eli Friedman | 472778e | 2008-02-09 08:50:58 +0000 | [diff] [blame] | 746 | LValue EmitLValueForField(llvm::Value* Base, FieldDecl* Field, |
Eli Friedman | 1e692ac | 2008-06-13 23:01:12 +0000 | [diff] [blame] | 747 | bool isUnion, unsigned CVRQualifiers); |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 748 | LValue EmitLValueForIvar(QualType ObjectTy, |
| 749 | llvm::Value* Base, const ObjCIvarDecl *Ivar, |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 750 | unsigned CVRQualifiers); |
| 751 | |
Fariborz Jahanian | fd64bb6 | 2008-12-15 20:35:07 +0000 | [diff] [blame] | 752 | LValue EmitLValueForBitfield(llvm::Value* Base, FieldDecl* Field, |
Fariborz Jahanian | 598d3f6 | 2009-02-03 19:03:09 +0000 | [diff] [blame] | 753 | unsigned CVRQualifiers); |
Fariborz Jahanian | fd64bb6 | 2008-12-15 20:35:07 +0000 | [diff] [blame] | 754 | |
Mike Stump | a99038c | 2009-02-28 09:07:16 +0000 | [diff] [blame] | 755 | LValue EmitBlockDeclRefLValue(const BlockDeclRefExpr *E); |
| 756 | |
Argyrios Kyrtzidis | e3a09e6 | 2008-09-10 02:36:38 +0000 | [diff] [blame] | 757 | LValue EmitCXXConditionDeclLValue(const CXXConditionDeclExpr *E); |
Anders Carlsson | b58d017 | 2009-05-30 23:23:33 +0000 | [diff] [blame] | 758 | LValue EmitCXXConstructLValue(const CXXConstructExpr *E); |
Anders Carlsson | e61c9e8 | 2009-05-30 23:30:54 +0000 | [diff] [blame] | 759 | LValue EmitCXXBindTemporaryLValue(const CXXBindTemporaryExpr *E); |
Anders Carlsson | b58d017 | 2009-05-30 23:23:33 +0000 | [diff] [blame] | 760 | |
Daniel Dunbar | 0a04d77 | 2008-08-23 10:51:21 +0000 | [diff] [blame] | 761 | LValue EmitObjCMessageExprLValue(const ObjCMessageExpr *E); |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 762 | LValue EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E); |
Daniel Dunbar | 85c59ed | 2008-08-29 08:11:39 +0000 | [diff] [blame] | 763 | LValue EmitObjCPropertyRefLValue(const ObjCPropertyRefExpr *E); |
Fariborz Jahanian | 43f4470 | 2008-11-22 22:30:21 +0000 | [diff] [blame] | 764 | LValue EmitObjCKVCRefLValue(const ObjCKVCRefExpr *E); |
Chris Lattner | 6545994 | 2009-04-25 19:35:26 +0000 | [diff] [blame] | 765 | LValue EmitObjCSuperExprLValue(const ObjCSuperExpr *E); |
| 766 | LValue EmitStmtExprLValue(const StmtExpr *E); |
Daniel Dunbar | 0a04d77 | 2008-08-23 10:51:21 +0000 | [diff] [blame] | 767 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 768 | //===--------------------------------------------------------------------===// |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 769 | // Scalar Expression Emission |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 770 | //===--------------------------------------------------------------------===// |
| 771 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 772 | /// EmitCall - Generate a call of the given function, expecting the given |
| 773 | /// result type, and using the given argument list which specifies both the |
| 774 | /// LLVM arguments and the types they were derived from. |
Daniel Dunbar | c0ef9f5 | 2009-02-20 18:06:48 +0000 | [diff] [blame] | 775 | /// |
| 776 | /// \param TargetDecl - If given, the decl of the function in a |
| 777 | /// direct call; used to set attributes on the call (noreturn, |
| 778 | /// etc.). |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 779 | RValue EmitCall(const CGFunctionInfo &FnInfo, |
| 780 | llvm::Value *Callee, |
Daniel Dunbar | c0ef9f5 | 2009-02-20 18:06:48 +0000 | [diff] [blame] | 781 | const CallArgList &Args, |
| 782 | const Decl *TargetDecl = 0); |
Anders Carlsson | 9864771 | 2009-05-27 01:22:39 +0000 | [diff] [blame] | 783 | |
| 784 | RValue EmitCall(llvm::Value *Callee, QualType FnType, |
| 785 | CallExpr::const_arg_iterator ArgBeg, |
| 786 | CallExpr::const_arg_iterator ArgEnd, |
| 787 | const Decl *TargetDecl = 0); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 788 | RValue EmitCallExpr(const CallExpr *E); |
Anders Carlsson | b9de2c5 | 2009-05-11 23:37:08 +0000 | [diff] [blame] | 789 | |
| 790 | RValue EmitCXXMemberCall(const CXXMethodDecl *MD, |
| 791 | llvm::Value *Callee, |
| 792 | llvm::Value *This, |
| 793 | CallExpr::const_arg_iterator ArgBeg, |
| 794 | CallExpr::const_arg_iterator ArgEnd); |
Anders Carlsson | 774e7c6 | 2009-04-03 22:50:24 +0000 | [diff] [blame] | 795 | RValue EmitCXXMemberCallExpr(const CXXMemberCallExpr *E); |
Ted Kremenek | 5549976 | 2008-06-17 02:43:46 +0000 | [diff] [blame] | 796 | |
Anders Carlsson | 0f29463 | 2009-05-27 04:18:27 +0000 | [diff] [blame] | 797 | RValue EmitCXXOperatorMemberCallExpr(const CXXOperatorCallExpr *E, |
| 798 | const CXXMethodDecl *MD); |
| 799 | |
Daniel Dunbar | ef2abfe | 2009-02-16 22:43:43 +0000 | [diff] [blame] | 800 | RValue EmitBuiltinExpr(const FunctionDecl *FD, |
| 801 | unsigned BuiltinID, const CallExpr *E); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 802 | |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 803 | RValue EmitBlockCallExpr(const CallExpr *E); |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 804 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 805 | /// EmitTargetBuiltinExpr - Emit the given builtin call. Returns 0 if the call |
| 806 | /// is unhandled by the current target. |
Daniel Dunbar | f02e9dd | 2008-10-10 00:24:54 +0000 | [diff] [blame] | 807 | llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
| 808 | |
Anders Carlsson | 564f1de | 2007-12-09 23:17:02 +0000 | [diff] [blame] | 809 | llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
| 810 | llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 811 | |
Anders Carlsson | cc23aca | 2007-12-10 19:35:18 +0000 | [diff] [blame] | 812 | llvm::Value *EmitShuffleVector(llvm::Value* V1, llvm::Value *V2, ...); |
Nate Begeman | 4119d1a | 2007-12-30 02:59:45 +0000 | [diff] [blame] | 813 | llvm::Value *EmitVector(llvm::Value * const *Vals, unsigned NumVals, |
| 814 | bool isSplat = false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 815 | |
Daniel Dunbar | ed7c618 | 2008-08-20 00:28:19 +0000 | [diff] [blame] | 816 | llvm::Value *EmitObjCProtocolExpr(const ObjCProtocolExpr *E); |
Chris Lattner | 7f02f72 | 2007-08-24 05:35:26 +0000 | [diff] [blame] | 817 | llvm::Value *EmitObjCStringLiteral(const ObjCStringLiteral *E); |
Chris Lattner | 8fdf328 | 2008-06-24 17:04:18 +0000 | [diff] [blame] | 818 | llvm::Value *EmitObjCSelectorExpr(const ObjCSelectorExpr *E); |
Daniel Dunbar | 8f2926b | 2008-08-23 03:46:30 +0000 | [diff] [blame] | 819 | RValue EmitObjCMessageExpr(const ObjCMessageExpr *E); |
Fariborz Jahanian | 5daf570 | 2008-11-22 18:39:36 +0000 | [diff] [blame] | 820 | RValue EmitObjCPropertyGet(const Expr *E); |
Fariborz Jahanian | f469557 | 2009-03-20 19:18:21 +0000 | [diff] [blame] | 821 | RValue EmitObjCSuperPropertyGet(const Expr *Exp, const Selector &S); |
Fariborz Jahanian | 43f4470 | 2008-11-22 22:30:21 +0000 | [diff] [blame] | 822 | void EmitObjCPropertySet(const Expr *E, RValue Src); |
Fariborz Jahanian | f469557 | 2009-03-20 19:18:21 +0000 | [diff] [blame] | 823 | void EmitObjCSuperPropertySet(const Expr *E, const Selector &S, RValue Src); |
Chris Lattner | 8fdf328 | 2008-06-24 17:04:18 +0000 | [diff] [blame] | 824 | |
| 825 | |
Anders Carlsson | 4029ca7 | 2009-05-20 00:24:07 +0000 | [diff] [blame] | 826 | /// EmitReferenceBindingToExpr - Emits a reference binding to the passed in |
| 827 | /// expression. Will emit a temporary variable if E is not an LValue. |
| 828 | RValue EmitReferenceBindingToExpr(const Expr* E, QualType DestType); |
| 829 | |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 830 | //===--------------------------------------------------------------------===// |
Chris Lattner | bfc0c1a | 2007-08-26 23:13:56 +0000 | [diff] [blame] | 831 | // Expression Emission |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 832 | //===--------------------------------------------------------------------===// |
Chris Lattner | bfc0c1a | 2007-08-26 23:13:56 +0000 | [diff] [blame] | 833 | |
| 834 | // Expressions are broken into three classes: scalar, complex, aggregate. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 835 | |
| 836 | /// EmitScalarExpr - Emit the computation of the specified expression of LLVM |
| 837 | /// scalar type, returning the result. |
Mike Stump | 7f79f9b | 2009-05-29 15:46:01 +0000 | [diff] [blame] | 838 | llvm::Value *EmitScalarExpr(const Expr *E , bool IgnoreResultAssign=false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 839 | |
Chris Lattner | 3707b25 | 2007-08-26 06:48:56 +0000 | [diff] [blame] | 840 | /// EmitScalarConversion - Emit a conversion from the specified type to the |
| 841 | /// specified destination type, both of which are LLVM scalar types. |
| 842 | llvm::Value *EmitScalarConversion(llvm::Value *Src, QualType SrcTy, |
| 843 | QualType DstTy); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 844 | |
Chris Lattner | 4f1a7b3 | 2007-08-26 16:34:22 +0000 | [diff] [blame] | 845 | /// EmitComplexToScalarConversion - Emit a conversion from the specified |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 846 | /// complex type to the specified destination type, where the destination type |
| 847 | /// is an LLVM scalar type. |
Chris Lattner | 4f1a7b3 | 2007-08-26 16:34:22 +0000 | [diff] [blame] | 848 | llvm::Value *EmitComplexToScalarConversion(ComplexPairTy Src, QualType SrcTy, |
| 849 | QualType DstTy); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 850 | |
| 851 | |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 852 | /// EmitAggExpr - Emit the computation of the specified expression of |
| 853 | /// aggregate type. The result is computed into DestPtr. Note that if |
| 854 | /// DestPtr is null, the value of the aggregate expression is not needed. |
Mike Stump | 49d1cd5 | 2009-05-26 22:03:21 +0000 | [diff] [blame] | 855 | void EmitAggExpr(const Expr *E, llvm::Value *DestPtr, bool VolatileDest, |
| 856 | bool IgnoreResult = false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 857 | |
Fariborz Jahanian | 082b02e | 2009-07-08 01:18:33 +0000 | [diff] [blame] | 858 | /// EmitGCMemmoveCollectable - Emit special API for structs with object |
| 859 | /// pointers. |
| 860 | void EmitGCMemmoveCollectable(llvm::Value *DestPtr, llvm::Value *SrcPtr, |
| 861 | unsigned long); |
| 862 | |
Chris Lattner | b6ef18a | 2007-08-21 05:54:00 +0000 | [diff] [blame] | 863 | /// EmitComplexExpr - Emit the computation of the specified expression of |
Chris Lattner | 23b1cdb | 2007-08-23 23:43:33 +0000 | [diff] [blame] | 864 | /// complex type, returning the result. |
Mike Stump | 7f79f9b | 2009-05-29 15:46:01 +0000 | [diff] [blame] | 865 | ComplexPairTy EmitComplexExpr(const Expr *E, bool IgnoreReal = false, |
| 866 | bool IgnoreImag = false, |
| 867 | bool IgnoreRealAssign = false, |
| 868 | bool IgnoreImagAssign = false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 869 | |
Chris Lattner | 23b1cdb | 2007-08-23 23:43:33 +0000 | [diff] [blame] | 870 | /// EmitComplexExprIntoAddr - Emit the computation of the specified expression |
| 871 | /// of complex type, storing into the specified Value*. |
Chris Lattner | 190dbe2 | 2007-08-26 16:22:13 +0000 | [diff] [blame] | 872 | void EmitComplexExprIntoAddr(const Expr *E, llvm::Value *DestAddr, |
| 873 | bool DestIsVolatile); |
Daniel Dunbar | 7f8ea5c | 2008-08-30 05:35:15 +0000 | [diff] [blame] | 874 | |
| 875 | /// StoreComplexToAddr - Store a complex number into the specified address. |
| 876 | void StoreComplexToAddr(ComplexPairTy V, llvm::Value *DestAddr, |
| 877 | bool DestIsVolatile); |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 878 | /// LoadComplexFromAddr - Load a complex number from the specified address. |
| 879 | ComplexPairTy LoadComplexFromAddr(llvm::Value *SrcAddr, bool SrcIsVolatile); |
Chris Lattner | 2621fd1 | 2008-05-08 05:58:21 +0000 | [diff] [blame] | 880 | |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 881 | /// CreateStaticBlockVarDecl - Create a zero-initialized LLVM global |
| 882 | /// for a static block var decl. |
| 883 | llvm::GlobalVariable * CreateStaticBlockVarDecl(const VarDecl &D, |
| 884 | const char *Separator, |
| 885 | llvm::GlobalValue::LinkageTypes |
| 886 | Linkage); |
| 887 | |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 888 | /// GenerateStaticCXXBlockVarDecl - Create the initializer for a C++ |
| 889 | /// runtime initialized static block var decl. |
| 890 | void GenerateStaticCXXBlockVarDeclInit(const VarDecl &D, |
| 891 | llvm::GlobalVariable *GV); |
Anders Carlsson | e1b29ef | 2008-08-22 16:00:37 +0000 | [diff] [blame] | 892 | |
Anders Carlsson | 31ccf37 | 2009-05-03 17:47:16 +0000 | [diff] [blame] | 893 | void EmitCXXConstructExpr(llvm::Value *Dest, const CXXConstructExpr *E); |
Anders Carlsson | b14095a | 2009-04-17 00:06:03 +0000 | [diff] [blame] | 894 | |
Anders Carlsson | b58d017 | 2009-05-30 23:23:33 +0000 | [diff] [blame] | 895 | RValue EmitCXXExprWithTemporaries(const CXXExprWithTemporaries *E, |
| 896 | llvm::Value *AggLoc = 0, |
| 897 | bool isAggLocVolatile = false); |
| 898 | |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 899 | //===--------------------------------------------------------------------===// |
| 900 | // Internal Helpers |
| 901 | //===--------------------------------------------------------------------===// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 902 | |
Chris Lattner | 0946ccd | 2008-11-11 07:41:27 +0000 | [diff] [blame] | 903 | /// ContainsLabel - Return true if the statement contains a label in it. If |
| 904 | /// this statement is not executed normally, it not containing a label means |
| 905 | /// that we can just remove the code. |
| 906 | static bool ContainsLabel(const Stmt *S, bool IgnoreCaseStmts = false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 907 | |
Daniel Dunbar | 4bc0455 | 2008-11-12 10:12:14 +0000 | [diff] [blame] | 908 | /// ConstantFoldsToSimpleInteger - If the specified expression does not fold |
Chris Lattner | 31a0984 | 2008-11-12 08:04:58 +0000 | [diff] [blame] | 909 | /// to a constant, or if it does but contains a label, return 0. If it |
| 910 | /// constant folds to 'true' and does not contain a label, return 1, if it |
| 911 | /// constant folds to 'false' and does not contain a label, return -1. |
| 912 | int ConstantFoldsToSimpleInteger(const Expr *Cond); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 913 | |
Chris Lattner | 31a0984 | 2008-11-12 08:04:58 +0000 | [diff] [blame] | 914 | /// EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g. for an |
| 915 | /// if statement) to the specified blocks. Based on the condition, this might |
| 916 | /// try to simplify the codegen of the conditional based on the branch. |
Chris Lattner | 9bc47e2 | 2008-11-12 07:46:33 +0000 | [diff] [blame] | 917 | void EmitBranchOnBoolExpr(const Expr *Cond, llvm::BasicBlock *TrueBlock, |
Daniel Dunbar | 4bc0455 | 2008-11-12 10:12:14 +0000 | [diff] [blame] | 918 | llvm::BasicBlock *FalseBlock); |
Chris Lattner | 31a0984 | 2008-11-12 08:04:58 +0000 | [diff] [blame] | 919 | private: |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 920 | |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 921 | /// EmitIndirectSwitches - Emit code for all of the switch |
| 922 | /// instructions in IndirectSwitches. |
| 923 | void EmitIndirectSwitches(); |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 924 | |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 925 | void EmitReturnOfRValue(RValue RV, QualType Ty); |
| 926 | |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 927 | /// ExpandTypeFromArgs - Reconstruct a structure of type \arg Ty |
| 928 | /// from function arguments into \arg Dst. See ABIArgInfo::Expand. |
| 929 | /// |
| 930 | /// \param AI - The first function argument of the expansion. |
| 931 | /// \return The argument following the last expanded function |
| 932 | /// argument. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 933 | llvm::Function::arg_iterator |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 934 | ExpandTypeFromArgs(QualType Ty, LValue Dst, |
| 935 | llvm::Function::arg_iterator AI); |
| 936 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 937 | /// ExpandTypeToArgs - Expand an RValue \arg Src, with the LLVM type for \arg |
| 938 | /// Ty, into individual arguments on the provided vector \arg Args. See |
| 939 | /// ABIArgInfo::Expand. |
| 940 | void ExpandTypeToArgs(QualType Ty, RValue Src, |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 941 | llvm::SmallVector<llvm::Value*, 16> &Args); |
Anders Carlsson | c8c7b18 | 2009-01-11 19:40:10 +0000 | [diff] [blame] | 942 | |
Daniel Dunbar | b84e8a6 | 2009-05-04 06:56:16 +0000 | [diff] [blame] | 943 | llvm::Value* EmitAsmInput(const AsmStmt &S, |
| 944 | const TargetInfo::ConstraintInfo &Info, |
Anders Carlsson | c8c7b18 | 2009-01-11 19:40:10 +0000 | [diff] [blame] | 945 | const Expr *InputExpr, std::string &ConstraintStr); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 946 | |
Anders Carlsson | c71c845 | 2009-02-07 23:50:39 +0000 | [diff] [blame] | 947 | /// EmitCleanupBlock - emits a single cleanup block. |
| 948 | void EmitCleanupBlock(); |
| 949 | |
Anders Carlsson | 87eaf17 | 2009-02-08 00:50:42 +0000 | [diff] [blame] | 950 | /// AddBranchFixup - adds a branch instruction to the list of fixups for the |
| 951 | /// current cleanup scope. |
| 952 | void AddBranchFixup(llvm::BranchInst *BI); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 953 | |
Anders Carlsson | 0139bb9 | 2009-04-08 20:47:54 +0000 | [diff] [blame] | 954 | /// EmitCallArg - Emit a single call argument. |
| 955 | RValue EmitCallArg(const Expr *E, QualType ArgType); |
| 956 | |
| 957 | /// EmitCallArgs - Emit call arguments for a function. |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 958 | /// The CallArgTypeInfo parameter is used for iterating over the known |
| 959 | /// argument types of the function being called. |
| 960 | template<typename T> |
| 961 | void EmitCallArgs(CallArgList& Args, const T* CallArgTypeInfo, |
Anders Carlsson | 0139bb9 | 2009-04-08 20:47:54 +0000 | [diff] [blame] | 962 | CallExpr::const_arg_iterator ArgBeg, |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 963 | CallExpr::const_arg_iterator ArgEnd) { |
| 964 | CallExpr::const_arg_iterator Arg = ArgBeg; |
Anders Carlsson | 0139bb9 | 2009-04-08 20:47:54 +0000 | [diff] [blame] | 965 | |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 966 | // First, use the argument types that the type info knows about |
| 967 | if (CallArgTypeInfo) { |
| 968 | for (typename T::arg_type_iterator I = CallArgTypeInfo->arg_type_begin(), |
| 969 | E = CallArgTypeInfo->arg_type_end(); I != E; ++I, ++Arg) { |
| 970 | QualType ArgType = *I; |
| 971 | |
| 972 | assert(getContext().getCanonicalType(ArgType.getNonReferenceType()). |
| 973 | getTypePtr() == |
| 974 | getContext().getCanonicalType(Arg->getType()).getTypePtr() && |
| 975 | "type mismatch in call argument!"); |
| 976 | |
| 977 | Args.push_back(std::make_pair(EmitCallArg(*Arg, ArgType), |
| 978 | ArgType)); |
| 979 | } |
| 980 | |
| 981 | // Either we've emitted all the call args, or we have a call to a |
| 982 | // variadic function. |
Eli Friedman | 1768fab | 2009-04-19 20:21:56 +0000 | [diff] [blame] | 983 | assert((Arg == ArgEnd || CallArgTypeInfo->isVariadic()) && |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 984 | "Extra arguments in non-variadic function!"); |
| 985 | |
| 986 | } |
| 987 | |
| 988 | // If we still have any arguments, emit them using the type of the argument. |
| 989 | for (; Arg != ArgEnd; ++Arg) { |
| 990 | QualType ArgType = Arg->getType(); |
| 991 | Args.push_back(std::make_pair(EmitCallArg(*Arg, ArgType), |
| 992 | ArgType)); |
| 993 | } |
| 994 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 995 | }; |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 996 | |
| 997 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 998 | } // end namespace CodeGen |
| 999 | } // end namespace clang |
| 1000 | |
| 1001 | #endif |