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> |
Mike Stump | 96bd13a | 2009-03-04 15:32:52 +0000 | [diff] [blame] | 25 | #include "CGBlocks.h" |
Daniel Dunbar | 45d196b | 2008-11-01 01:53:16 +0000 | [diff] [blame] | 26 | #include "CGBuilder.h" |
Daniel Dunbar | 0dbe227 | 2008-09-08 21:33:45 +0000 | [diff] [blame] | 27 | #include "CGCall.h" |
Anders Carlsson | b14095a | 2009-04-17 00:06:03 +0000 | [diff] [blame] | 28 | #include "CGCXX.h" |
Daniel Dunbar | 8f2926b | 2008-08-23 03:46:30 +0000 | [diff] [blame] | 29 | #include "CGValue.h" |
| 30 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 31 | namespace llvm { |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 32 | class BasicBlock; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 33 | class Module; |
Daniel Dunbar | 898d508 | 2008-09-30 01:06:03 +0000 | [diff] [blame] | 34 | class SwitchInst; |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 35 | class Value; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 36 | } |
| 37 | |
| 38 | namespace clang { |
| 39 | class ASTContext; |
| 40 | class Decl; |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 41 | class EnumConstantDecl; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 42 | class FunctionDecl; |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 43 | class FunctionProtoType; |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 44 | class LabelStmt; |
Fariborz Jahanian | 679a502 | 2009-01-10 21:06:09 +0000 | [diff] [blame] | 45 | class ObjCContainerDecl; |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 46 | class ObjCInterfaceDecl; |
| 47 | class ObjCIvarDecl; |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 48 | class ObjCMethodDecl; |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 49 | class ObjCImplementationDecl; |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 50 | class ObjCPropertyImplDecl; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 51 | class TargetInfo; |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 52 | class VarDecl; |
Chris Lattner | 16f0049 | 2009-04-26 01:32:48 +0000 | [diff] [blame] | 53 | class ObjCForCollectionStmt; |
| 54 | class ObjCAtTryStmt; |
| 55 | class ObjCAtThrowStmt; |
| 56 | class ObjCAtSynchronizedStmt; |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 57 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 58 | namespace CodeGen { |
| 59 | class CodeGenModule; |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 60 | class CodeGenTypes; |
Anders Carlsson | e896d98 | 2009-02-13 08:11:52 +0000 | [diff] [blame] | 61 | class CGDebugInfo; |
Daniel Dunbar | bb36d33 | 2009-02-02 21:43:58 +0000 | [diff] [blame] | 62 | class CGFunctionInfo; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 63 | class CGRecordLayout; |
| 64 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 65 | /// CodeGenFunction - This class organizes the per-function state that is used |
| 66 | /// while generating LLVM code. |
Mike Stump | 2a99814 | 2009-03-04 18:17:45 +0000 | [diff] [blame] | 67 | class CodeGenFunction : public BlockFunction { |
Anders Carlsson | 8a219ce | 2009-02-24 04:21:31 +0000 | [diff] [blame] | 68 | CodeGenFunction(const CodeGenFunction&); // DO NOT IMPLEMENT |
| 69 | void operator=(const CodeGenFunction&); // DO NOT IMPLEMENT |
Chris Lattner | bfc0c1a | 2007-08-26 23:13:56 +0000 | [diff] [blame] | 70 | public: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 71 | CodeGenModule &CGM; // Per-module state. |
| 72 | TargetInfo &Target; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 73 | |
Chris Lattner | 58dee10 | 2007-08-21 16:57:55 +0000 | [diff] [blame] | 74 | typedef std::pair<llvm::Value *, llvm::Value *> ComplexPairTy; |
Daniel Dunbar | 45d196b | 2008-11-01 01:53:16 +0000 | [diff] [blame] | 75 | CGBuilderTy Builder; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 76 | |
Chris Lattner | b5437d2 | 2009-04-23 05:30:27 +0000 | [diff] [blame] | 77 | /// CurFuncDecl - Holds the Decl for the current function or ObjC method. |
| 78 | /// This excludes BlockDecls. |
Chris Lattner | 4111024 | 2008-06-17 18:05:57 +0000 | [diff] [blame] | 79 | const Decl *CurFuncDecl; |
Chris Lattner | b5437d2 | 2009-04-23 05:30:27 +0000 | [diff] [blame] | 80 | /// CurCodeDecl - This is the inner-most code context, which includes blocks. |
| 81 | const Decl *CurCodeDecl; |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 82 | const CGFunctionInfo *CurFnInfo; |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 83 | QualType FnRetTy; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 84 | llvm::Function *CurFn; |
| 85 | |
Daniel Dunbar | 5ca2084 | 2008-09-09 21:00:17 +0000 | [diff] [blame] | 86 | /// ReturnBlock - Unified return block. |
| 87 | llvm::BasicBlock *ReturnBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 88 | /// ReturnValue - The temporary alloca to hold the return value. This is null |
| 89 | /// iff the function has no return value. |
Daniel Dunbar | 5ca2084 | 2008-09-09 21:00:17 +0000 | [diff] [blame] | 90 | llvm::Instruction *ReturnValue; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 91 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 92 | /// AllocaInsertPoint - This is an instruction in the entry block before which |
| 93 | /// we prefer to insert allocas. |
Chris Lattner | 481769b | 2009-03-31 22:17:44 +0000 | [diff] [blame] | 94 | llvm::AssertingVH<llvm::Instruction> AllocaInsertPt; |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 95 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 96 | const llvm::Type *LLVMIntTy; |
Hartmut Kaiser | 7b66000 | 2007-10-17 15:00:17 +0000 | [diff] [blame] | 97 | uint32_t LLVMPointerWidth; |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 98 | |
| 99 | public: |
Anders Carlsson | fa1f756 | 2009-02-10 06:07:49 +0000 | [diff] [blame] | 100 | /// ObjCEHValueStack - Stack of Objective-C exception values, used for |
| 101 | /// rethrows. |
Anders Carlsson | 273558f | 2009-02-07 21:37:21 +0000 | [diff] [blame] | 102 | llvm::SmallVector<llvm::Value*, 8> ObjCEHValueStack; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 103 | |
Anders Carlsson | 6fc5591 | 2009-02-08 03:22:36 +0000 | [diff] [blame] | 104 | /// PushCleanupBlock - Push a new cleanup entry on the stack and set the |
| 105 | /// passed in block as the cleanup block. |
| 106 | void PushCleanupBlock(llvm::BasicBlock *CleanupBlock); |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 107 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 108 | /// CleanupBlockInfo - A struct representing a popped cleanup block. |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 109 | struct CleanupBlockInfo { |
| 110 | /// CleanupBlock - the cleanup block |
| 111 | llvm::BasicBlock *CleanupBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 112 | |
| 113 | /// SwitchBlock - the block (if any) containing the switch instruction used |
| 114 | /// for jumping to the final destination. |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 115 | llvm::BasicBlock *SwitchBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 116 | |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 117 | /// EndBlock - the default destination for the switch instruction. |
| 118 | llvm::BasicBlock *EndBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 119 | |
| 120 | CleanupBlockInfo(llvm::BasicBlock *cb, llvm::BasicBlock *sb, |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 121 | llvm::BasicBlock *eb) |
| 122 | : CleanupBlock(cb), SwitchBlock(sb), EndBlock(eb) {} |
| 123 | }; |
| 124 | |
| 125 | /// PopCleanupBlock - Will pop the cleanup entry on the stack, process all |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 126 | /// branch fixups and return a block info struct with the switch block and end |
| 127 | /// block. |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 128 | CleanupBlockInfo PopCleanupBlock(); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 129 | |
| 130 | /// CleanupScope - RAII object that will create a cleanup block and set the |
| 131 | /// insert point to that block. When destructed, it sets the insert point to |
| 132 | /// the previous block and pushes a new cleanup entry on the stack. |
Anders Carlsson | 0d5c685 | 2009-02-07 23:30:41 +0000 | [diff] [blame] | 133 | class CleanupScope { |
| 134 | CodeGenFunction& CGF; |
| 135 | llvm::BasicBlock *CurBB; |
Anders Carlsson | 6fc5591 | 2009-02-08 03:22:36 +0000 | [diff] [blame] | 136 | llvm::BasicBlock *CleanupBB; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 137 | |
Anders Carlsson | 0d5c685 | 2009-02-07 23:30:41 +0000 | [diff] [blame] | 138 | public: |
| 139 | CleanupScope(CodeGenFunction &cgf) |
| 140 | : CGF(cgf), CurBB(CGF.Builder.GetInsertBlock()) { |
Anders Carlsson | 6fc5591 | 2009-02-08 03:22:36 +0000 | [diff] [blame] | 141 | CleanupBB = CGF.createBasicBlock("cleanup"); |
| 142 | CGF.Builder.SetInsertPoint(CleanupBB); |
Anders Carlsson | 0d5c685 | 2009-02-07 23:30:41 +0000 | [diff] [blame] | 143 | } |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 144 | |
Anders Carlsson | 0d5c685 | 2009-02-07 23:30:41 +0000 | [diff] [blame] | 145 | ~CleanupScope() { |
Anders Carlsson | 6fc5591 | 2009-02-08 03:22:36 +0000 | [diff] [blame] | 146 | CGF.PushCleanupBlock(CleanupBB); |
Anders Carlsson | 0d5c685 | 2009-02-07 23:30:41 +0000 | [diff] [blame] | 147 | CGF.Builder.SetInsertPoint(CurBB); |
| 148 | } |
| 149 | }; |
| 150 | |
Anders Carlsson | c71c845 | 2009-02-07 23:50:39 +0000 | [diff] [blame] | 151 | /// EmitCleanupBlocks - Takes the old cleanup stack size and emits the cleanup |
| 152 | /// blocks that have been added. |
| 153 | void EmitCleanupBlocks(size_t OldCleanupStackSize); |
| 154 | |
Anders Carlsson | 87eaf17 | 2009-02-08 00:50:42 +0000 | [diff] [blame] | 155 | /// EmitBranchThroughCleanup - Emit a branch from the current insert block |
| 156 | /// through the cleanup handling code (if any) and then on to \arg Dest. |
| 157 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 158 | /// 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] | 159 | /// this behavior for branches? |
| 160 | void EmitBranchThroughCleanup(llvm::BasicBlock *Dest); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 161 | |
Chris Lattner | 7f02f72 | 2007-08-24 05:35:26 +0000 | [diff] [blame] | 162 | private: |
Anders Carlsson | e896d98 | 2009-02-13 08:11:52 +0000 | [diff] [blame] | 163 | CGDebugInfo* DebugInfo; |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 164 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 165 | /// LabelIDs - Track arbitrary ids assigned to labels for use in implementing |
| 166 | /// the GCC address-of-label extension and indirect goto. IDs are assigned to |
| 167 | /// labels inside getIDForAddrOfLabel(). |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 168 | std::map<const LabelStmt*, unsigned> LabelIDs; |
| 169 | |
| 170 | /// IndirectSwitches - Record the list of switches for indirect |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 171 | /// gotos. Emission of the actual switching code needs to be delayed until all |
| 172 | /// AddrLabelExprs have been seen. |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 173 | std::vector<llvm::SwitchInst*> IndirectSwitches; |
| 174 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 175 | /// LocalDeclMap - This keeps track of the LLVM allocas or globals for local C |
| 176 | /// decls. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 177 | llvm::DenseMap<const Decl*, llvm::Value*> LocalDeclMap; |
| 178 | |
| 179 | /// LabelMap - This keeps track of the LLVM basic block for each C label. |
| 180 | llvm::DenseMap<const LabelStmt*, llvm::BasicBlock*> LabelMap; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 181 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 182 | // BreakContinueStack - This keeps track of where break and continue |
Anders Carlsson | e4b6d34 | 2009-02-10 05:52:02 +0000 | [diff] [blame] | 183 | // statements should jump to. |
Chris Lattner | da13870 | 2007-07-16 21:28:45 +0000 | [diff] [blame] | 184 | struct BreakContinue { |
Anders Carlsson | e4b6d34 | 2009-02-10 05:52:02 +0000 | [diff] [blame] | 185 | BreakContinue(llvm::BasicBlock *bb, llvm::BasicBlock *cb) |
| 186 | : BreakBlock(bb), ContinueBlock(cb) {} |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 187 | |
Chris Lattner | da13870 | 2007-07-16 21:28:45 +0000 | [diff] [blame] | 188 | llvm::BasicBlock *BreakBlock; |
| 189 | llvm::BasicBlock *ContinueBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 190 | }; |
Chris Lattner | da13870 | 2007-07-16 21:28:45 +0000 | [diff] [blame] | 191 | llvm::SmallVector<BreakContinue, 8> BreakContinueStack; |
Daniel Dunbar | 18ccc77 | 2008-09-28 01:03:14 +0000 | [diff] [blame] | 192 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 193 | /// SwitchInsn - This is nearest current switch instruction. It is null if if |
| 194 | /// current context is not in a switch. |
Devang Patel | 51b09f2 | 2007-10-04 23:45:31 +0000 | [diff] [blame] | 195 | llvm::SwitchInst *SwitchInsn; |
| 196 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 197 | /// CaseRangeBlock - This block holds if condition check for last case |
Devang Patel | 80fd5f9 | 2007-10-09 17:08:50 +0000 | [diff] [blame] | 198 | /// statement range in current switch instruction. |
Devang Patel | c049e4f | 2007-10-08 20:57:48 +0000 | [diff] [blame] | 199 | llvm::BasicBlock *CaseRangeBlock; |
| 200 | |
Daniel Dunbar | 9834ffb | 2009-02-23 17:26:39 +0000 | [diff] [blame] | 201 | /// InvokeDest - This is the nearest exception target for calls |
| 202 | /// which can unwind, when exceptions are being used. |
| 203 | llvm::BasicBlock *InvokeDest; |
| 204 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 205 | // VLASizeMap - This keeps track of the associated size for each VLA type. |
| 206 | // FIXME: Maybe this could be a stack of maps that is pushed/popped as we |
| 207 | // enter/leave scopes. |
Anders Carlsson | dcc90d8 | 2008-12-12 07:19:02 +0000 | [diff] [blame] | 208 | llvm::DenseMap<const VariableArrayType*, llvm::Value*> VLASizeMap; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 209 | |
Anders Carlsson | 4cc1a47 | 2009-02-09 20:20:56 +0000 | [diff] [blame] | 210 | /// DidCallStackSave - Whether llvm.stacksave has been called. Used to avoid |
| 211 | /// calling llvm.stacksave for multiple VLAs in the same scope. |
| 212 | bool DidCallStackSave; |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 213 | |
Anders Carlsson | 6ccc476 | 2009-02-07 22:53:43 +0000 | [diff] [blame] | 214 | struct CleanupEntry { |
| 215 | /// CleanupBlock - The block of code that does the actual cleanup. |
| 216 | llvm::BasicBlock *CleanupBlock; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 217 | |
Anders Carlsson | 6ccc476 | 2009-02-07 22:53:43 +0000 | [diff] [blame] | 218 | /// Blocks - Basic blocks that were emitted in the current cleanup scope. |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 219 | std::vector<llvm::BasicBlock *> Blocks; |
Anders Carlsson | 6ccc476 | 2009-02-07 22:53:43 +0000 | [diff] [blame] | 220 | |
| 221 | /// BranchFixups - Branch instructions to basic blocks that haven't been |
| 222 | /// inserted into the current function yet. |
Anders Carlsson | bb66f9f | 2009-02-08 07:46:24 +0000 | [diff] [blame] | 223 | std::vector<llvm::BranchInst *> BranchFixups; |
Anders Carlsson | 6ccc476 | 2009-02-07 22:53:43 +0000 | [diff] [blame] | 224 | |
| 225 | explicit CleanupEntry(llvm::BasicBlock *cb) |
| 226 | : CleanupBlock(cb) {} |
| 227 | }; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 228 | |
Anders Carlsson | 6ccc476 | 2009-02-07 22:53:43 +0000 | [diff] [blame] | 229 | /// CleanupEntries - Stack of cleanup entries. |
| 230 | llvm::SmallVector<CleanupEntry, 8> CleanupEntries; |
| 231 | |
Anders Carlsson | bd6fa3d | 2009-02-08 00:16:35 +0000 | [diff] [blame] | 232 | typedef llvm::DenseMap<llvm::BasicBlock*, size_t> BlockScopeMap; |
| 233 | |
| 234 | /// BlockScopes - Map of which "cleanup scope" scope basic blocks have. |
| 235 | BlockScopeMap BlockScopes; |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 236 | |
Anders Carlsson | 2b77ba8 | 2009-04-04 20:47:02 +0000 | [diff] [blame] | 237 | /// CXXThisDecl - When parsing an C++ function, this will hold the implicit |
| 238 | /// 'this' declaration. |
| 239 | ImplicitParamDecl *CXXThisDecl; |
| 240 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 241 | public: |
| 242 | CodeGenFunction(CodeGenModule &cgm); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 243 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 244 | ASTContext &getContext() const; |
Anders Carlsson | e896d98 | 2009-02-13 08:11:52 +0000 | [diff] [blame] | 245 | CGDebugInfo *getDebugInfo() { return DebugInfo; } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 246 | |
Daniel Dunbar | 9834ffb | 2009-02-23 17:26:39 +0000 | [diff] [blame] | 247 | llvm::BasicBlock *getInvokeDest() { return InvokeDest; } |
| 248 | void setInvokeDest(llvm::BasicBlock *B) { InvokeDest = B; } |
| 249 | |
| 250 | //===--------------------------------------------------------------------===// |
| 251 | // Objective-C |
| 252 | //===--------------------------------------------------------------------===// |
| 253 | |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 254 | void GenerateObjCMethod(const ObjCMethodDecl *OMD); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 255 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 256 | void StartObjCMethod(const ObjCMethodDecl *MD, |
Fariborz Jahanian | 679a502 | 2009-01-10 21:06:09 +0000 | [diff] [blame] | 257 | const ObjCContainerDecl *CD); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 258 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 259 | /// GenerateObjCGetter - Synthesize an Objective-C property getter function. |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 260 | void GenerateObjCGetter(ObjCImplementationDecl *IMP, |
| 261 | const ObjCPropertyImplDecl *PID); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 262 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 263 | /// GenerateObjCSetter - Synthesize an Objective-C property setter function |
| 264 | /// for the given property. |
Fariborz Jahanian | fef30b5 | 2008-12-09 20:23:04 +0000 | [diff] [blame] | 265 | void GenerateObjCSetter(ObjCImplementationDecl *IMP, |
| 266 | const ObjCPropertyImplDecl *PID); |
Daniel Dunbar | af05bb9 | 2008-08-26 08:29:31 +0000 | [diff] [blame] | 267 | |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 268 | //===--------------------------------------------------------------------===// |
| 269 | // Block Bits |
| 270 | //===--------------------------------------------------------------------===// |
| 271 | |
Mike Stump | 8a2b4b1 | 2009-02-25 23:33:13 +0000 | [diff] [blame] | 272 | llvm::Value *BuildBlockLiteralTmp(const BlockExpr *); |
Mike Stump | a803b0e | 2009-03-25 17:58:24 +0000 | [diff] [blame] | 273 | llvm::Constant *BuildDescriptorBlockDecl(bool BlockHasCopyDispose, |
| 274 | uint64_t Size, |
Mike Stump | 0892099 | 2009-03-07 02:35:30 +0000 | [diff] [blame] | 275 | const llvm::StructType *, |
| 276 | std::vector<HelperInfo> *); |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 277 | |
Chris Lattner | 161d36d | 2009-02-28 19:01:03 +0000 | [diff] [blame] | 278 | llvm::Function *GenerateBlockFunction(const BlockExpr *BExpr, |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 279 | const BlockInfo& Info, |
Mike Stump | 6cc88f7 | 2009-03-20 21:53:12 +0000 | [diff] [blame] | 280 | const Decl *OuterFuncDecl, |
Mike Stump | 7f28a9c | 2009-03-13 23:34:28 +0000 | [diff] [blame] | 281 | llvm::DenseMap<const Decl*, llvm::Value*> ldm, |
Mike Stump | 8a2b4b1 | 2009-02-25 23:33:13 +0000 | [diff] [blame] | 282 | uint64_t &Size, uint64_t &Align, |
Mike Stump | 00470a1 | 2009-03-05 08:32:30 +0000 | [diff] [blame] | 283 | llvm::SmallVector<const Expr *, 8> &subBlockDeclRefDecls, |
| 284 | bool &subBlockHasCopyDispose); |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 285 | |
Mike Stump | 6cc88f7 | 2009-03-20 21:53:12 +0000 | [diff] [blame] | 286 | void BlockForwardSelf(); |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 287 | llvm::Value *LoadBlockStruct(); |
| 288 | |
Mike Stump | a99038c | 2009-02-28 09:07:16 +0000 | [diff] [blame] | 289 | llvm::Value *GetAddrOfBlockDecl(const BlockDeclRefExpr *E); |
Mike Stump | 30395dd | 2009-02-14 22:49:33 +0000 | [diff] [blame] | 290 | |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 291 | const llvm::Type *BuildByRefType(QualType Ty, uint64_t Align); |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 292 | |
Daniel Dunbar | bd012ff | 2008-07-29 23:18:29 +0000 | [diff] [blame] | 293 | void GenerateCode(const FunctionDecl *FD, |
| 294 | llvm::Function *Fn); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 295 | void StartFunction(const Decl *D, QualType RetTy, |
Daniel Dunbar | 7c08651 | 2008-09-09 23:14:03 +0000 | [diff] [blame] | 296 | llvm::Function *Fn, |
Daniel Dunbar | 2284ac9 | 2008-10-18 18:22:23 +0000 | [diff] [blame] | 297 | const FunctionArgList &Args, |
| 298 | SourceLocation StartLoc); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 299 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 300 | /// EmitReturnBlock - Emit the unified return block, trying to avoid its |
| 301 | /// emission when possible. |
Daniel Dunbar | 1c1d607 | 2009-01-26 23:27:52 +0000 | [diff] [blame] | 302 | void EmitReturnBlock(); |
| 303 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 304 | /// FinishFunction - Complete IR generation of the current function. It is |
| 305 | /// 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] | 306 | void FinishFunction(SourceLocation EndLoc=SourceLocation()); |
Daniel Dunbar | 17b708d | 2008-09-09 23:27:19 +0000 | [diff] [blame] | 307 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 308 | /// EmitFunctionProlog - Emit the target specific LLVM code to load the |
| 309 | /// arguments for the given function. This is also responsible for naming the |
| 310 | /// LLVM function arguments. |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 311 | void EmitFunctionProlog(const CGFunctionInfo &FI, |
| 312 | llvm::Function *Fn, |
Daniel Dunbar | 17b708d | 2008-09-09 23:27:19 +0000 | [diff] [blame] | 313 | const FunctionArgList &Args); |
| 314 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 315 | /// EmitFunctionEpilog - Emit the target specific LLVM code to return the |
| 316 | /// given temporary. |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 317 | void EmitFunctionEpilog(const CGFunctionInfo &FI, llvm::Value *ReturnValue); |
Daniel Dunbar | 17b708d | 2008-09-09 23:27:19 +0000 | [diff] [blame] | 318 | |
Daniel Dunbar | 8b1a343 | 2009-02-03 23:03:55 +0000 | [diff] [blame] | 319 | const llvm::Type *ConvertTypeForMem(QualType T); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 320 | const llvm::Type *ConvertType(QualType T); |
Chris Lattner | c8aa5f1 | 2008-04-04 04:07:35 +0000 | [diff] [blame] | 321 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 322 | /// LoadObjCSelf - Load the value of self. This function is only valid while |
| 323 | /// generating code for an Objective-C method. |
Chris Lattner | c8aa5f1 | 2008-04-04 04:07:35 +0000 | [diff] [blame] | 324 | llvm::Value *LoadObjCSelf(); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 325 | |
| 326 | /// TypeOfSelfObject - Return type of object that this self represents. |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 327 | QualType TypeOfSelfObject(); |
Chris Lattner | 4111024 | 2008-06-17 18:05:57 +0000 | [diff] [blame] | 328 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 329 | /// hasAggregateLLVMType - Return true if the specified AST type will map into |
| 330 | /// an aggregate LLVM type or is void. |
| 331 | static bool hasAggregateLLVMType(QualType T); |
Daniel Dunbar | 55e8742 | 2008-11-11 02:29:29 +0000 | [diff] [blame] | 332 | |
| 333 | /// createBasicBlock - Create an LLVM basic block. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 334 | llvm::BasicBlock *createBasicBlock(const char *Name="", |
Daniel Dunbar | 55e8742 | 2008-11-11 02:29:29 +0000 | [diff] [blame] | 335 | llvm::Function *Parent=0, |
| 336 | llvm::BasicBlock *InsertBefore=0) { |
Daniel Dunbar | 29ea672 | 2008-11-12 00:01:12 +0000 | [diff] [blame] | 337 | #ifdef NDEBUG |
| 338 | return llvm::BasicBlock::Create("", Parent, InsertBefore); |
| 339 | #else |
Daniel Dunbar | 55e8742 | 2008-11-11 02:29:29 +0000 | [diff] [blame] | 340 | return llvm::BasicBlock::Create(Name, Parent, InsertBefore); |
Daniel Dunbar | 29ea672 | 2008-11-12 00:01:12 +0000 | [diff] [blame] | 341 | #endif |
Daniel Dunbar | 55e8742 | 2008-11-11 02:29:29 +0000 | [diff] [blame] | 342 | } |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 343 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 344 | /// getBasicBlockForLabel - Return the LLVM basicblock that the specified |
| 345 | /// label maps to. |
| 346 | llvm::BasicBlock *getBasicBlockForLabel(const LabelStmt *S); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 347 | |
Daniel Dunbar | aa5bd87 | 2009-04-01 04:37:47 +0000 | [diff] [blame] | 348 | /// SimplifyForwardingBlocks - If the given basic block is only a |
| 349 | /// branch to another basic block, simplify it. This assumes that no |
| 350 | /// other code could potentially reference the basic block. |
| 351 | void SimplifyForwardingBlocks(llvm::BasicBlock *BB); |
| 352 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 353 | /// EmitBlock - Emit the given block \arg BB and set it as the insert point, |
| 354 | /// adding a fall-through branch from the current insert block if |
| 355 | /// necessary. It is legal to call this function even if there is no current |
| 356 | /// insertion point. |
Daniel Dunbar | a0c21a8 | 2008-11-13 01:24:05 +0000 | [diff] [blame] | 357 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 358 | /// IsFinished - If true, indicates that the caller has finished emitting |
| 359 | /// branches to the given block and does not expect to emit code into it. This |
| 360 | /// means the block can be ignored if it is unreachable. |
Daniel Dunbar | a0c21a8 | 2008-11-13 01:24:05 +0000 | [diff] [blame] | 361 | void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false); |
Daniel Dunbar | 824e3bd | 2008-11-11 04:34:23 +0000 | [diff] [blame] | 362 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 363 | /// EmitBranch - Emit a branch to the specified basic block from the current |
| 364 | /// insert block, taking care to avoid creation of branches from dummy |
| 365 | /// blocks. It is legal to call this function even if there is no current |
| 366 | /// insertion point. |
Daniel Dunbar | 5e08ad3 | 2008-11-11 22:06:59 +0000 | [diff] [blame] | 367 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 368 | /// This function clears the current insertion point. The caller should follow |
| 369 | /// calls to this function with calls to Emit*Block prior to generation new |
| 370 | /// code. |
Daniel Dunbar | d57a871 | 2008-11-11 09:41:28 +0000 | [diff] [blame] | 371 | void EmitBranch(llvm::BasicBlock *Block); |
| 372 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 373 | /// HaveInsertPoint - True if an insertion point is defined. If not, this |
| 374 | /// indicates that the current code being emitted is unreachable. |
| 375 | bool HaveInsertPoint() const { |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 376 | return Builder.GetInsertBlock() != 0; |
| 377 | } |
| 378 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 379 | /// EnsureInsertPoint - Ensure that an insertion point is defined so that |
| 380 | /// emitted IR has a place to go. Note that by definition, if this function |
| 381 | /// creates a block then that block is unreachable; callers may do better to |
| 382 | /// detect when no insertion point is defined and simply skip IR generation. |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 383 | void EnsureInsertPoint() { |
| 384 | if (!HaveInsertPoint()) |
| 385 | EmitBlock(createBasicBlock()); |
| 386 | } |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 387 | |
Daniel Dunbar | 488e993 | 2008-08-16 00:56:44 +0000 | [diff] [blame] | 388 | /// ErrorUnsupported - Print out an error that codegen doesn't support the |
Chris Lattner | dc5e826 | 2007-12-02 01:43:38 +0000 | [diff] [blame] | 389 | /// specified stmt yet. |
Daniel Dunbar | 90df4b6 | 2008-09-04 03:43:08 +0000 | [diff] [blame] | 390 | void ErrorUnsupported(const Stmt *S, const char *Type, |
| 391 | bool OmitOnError=false); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 392 | |
| 393 | //===--------------------------------------------------------------------===// |
| 394 | // Helpers |
| 395 | //===--------------------------------------------------------------------===// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 396 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 397 | /// CreateTempAlloca - This creates a alloca and inserts it into the entry |
| 398 | /// block. |
| 399 | llvm::AllocaInst *CreateTempAlloca(const llvm::Type *Ty, |
| 400 | const char *Name = "tmp"); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 401 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 402 | /// EvaluateExprAsBool - Perform the usual unary conversions on the specified |
| 403 | /// expression and compare the result against zero, returning an Int1Ty value. |
| 404 | llvm::Value *EvaluateExprAsBool(const Expr *E); |
| 405 | |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 406 | /// EmitAnyExpr - Emit code to compute the specified expression which can have |
| 407 | /// any type. The result is returned as an RValue struct. If this is an |
| 408 | /// aggregate expression, the aggloc/agglocvolatile arguments indicate where |
| 409 | /// the result should be returned. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 410 | RValue EmitAnyExpr(const Expr *E, llvm::Value *AggLoc = 0, |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 411 | bool isAggLocVolatile = false); |
Devang Patel | d9363c3 | 2007-09-28 21:49:18 +0000 | [diff] [blame] | 412 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 413 | // EmitVAListRef - Emit a "reference" to a va_list; this is either the address |
| 414 | // 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] | 415 | llvm::Value *EmitVAListRef(const Expr *E); |
| 416 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 417 | /// EmitAnyExprToTemp - Similary to EmitAnyExpr(), however, the result will |
| 418 | /// always be accessible even if no aggregate location is provided. |
| 419 | RValue EmitAnyExprToTemp(const Expr *E, llvm::Value *AggLoc = 0, |
Daniel Dunbar | 46f45b9 | 2008-09-09 01:06:48 +0000 | [diff] [blame] | 420 | bool isAggLocVolatile = false); |
| 421 | |
Daniel Dunbar | 7482d12 | 2008-09-09 20:49:46 +0000 | [diff] [blame] | 422 | void EmitAggregateCopy(llvm::Value *DestPtr, llvm::Value *SrcPtr, |
| 423 | QualType EltTy); |
| 424 | |
| 425 | void EmitAggregateClear(llvm::Value *DestPtr, QualType Ty); |
| 426 | |
Devang Patel | 51b09f2 | 2007-10-04 23:45:31 +0000 | [diff] [blame] | 427 | /// StartBlock - Start new block named N. If insert block is a dummy block |
| 428 | /// then reuse it. |
| 429 | void StartBlock(const char *N); |
| 430 | |
Devang Patel | 88a981b | 2007-11-01 19:11:01 +0000 | [diff] [blame] | 431 | /// getCGRecordLayout - Return record layout info. |
| 432 | const CGRecordLayout *getCGRecordLayout(CodeGenTypes &CGT, QualType RTy); |
Lauro Ramos Venancio | 8137335 | 2008-02-26 21:41:45 +0000 | [diff] [blame] | 433 | |
| 434 | /// GetAddrOfStaticLocalVar - Return the address of a static local variable. |
Steve Naroff | 248a753 | 2008-04-15 22:42:06 +0000 | [diff] [blame] | 435 | llvm::Constant *GetAddrOfStaticLocalVar(const VarDecl *BVD); |
Dan Gohman | 4f8d123 | 2008-05-22 00:50:06 +0000 | [diff] [blame] | 436 | |
Anders Carlsson | dde0a94 | 2008-09-11 09:15:33 +0000 | [diff] [blame] | 437 | /// GetAddrOfLocalVar - Return the address of a local variable. |
| 438 | llvm::Value *GetAddrOfLocalVar(const VarDecl *VD); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 439 | |
Dan Gohman | 4f8d123 | 2008-05-22 00:50:06 +0000 | [diff] [blame] | 440 | /// getAccessedFieldNo - Given an encoded value and a result number, return |
| 441 | /// the input field number being accessed. |
| 442 | static unsigned getAccessedFieldNo(unsigned Idx, const llvm::Constant *Elts); |
| 443 | |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 444 | unsigned GetIDForAddrOfLabel(const LabelStmt *L); |
| 445 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 446 | /// 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] | 447 | void EmitMemSetToZero(llvm::Value *DestPtr, QualType Ty); |
Anders Carlsson | ddf7cac | 2008-11-04 05:30:00 +0000 | [diff] [blame] | 448 | |
| 449 | // EmitVAArg - Generate code to get an argument from the passed in pointer |
| 450 | // and update it accordingly. The return value is a pointer to the argument. |
| 451 | // 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] | 452 | // instruction in LLVM instead once it works well enough. |
Anders Carlsson | ddf7cac | 2008-11-04 05:30:00 +0000 | [diff] [blame] | 453 | llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty); |
Anders Carlsson | f666b77 | 2008-12-20 20:27:15 +0000 | [diff] [blame] | 454 | |
Anders Carlsson | 60d3541 | 2008-12-20 20:46:34 +0000 | [diff] [blame] | 455 | // EmitVLASize - Generate code for any VLA size expressions that might occur |
| 456 | // in a variably modified type. If Ty is a VLA, will return the value that |
| 457 | // corresponds to the size in bytes of the VLA type. Will return 0 otherwise. |
| 458 | llvm::Value *EmitVLASize(QualType Ty); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 459 | |
Anders Carlsson | dcc90d8 | 2008-12-12 07:19:02 +0000 | [diff] [blame] | 460 | // GetVLASize - Returns an LLVM value that corresponds to the size in bytes |
| 461 | // of a variable length array type. |
| 462 | llvm::Value *GetVLASize(const VariableArrayType *); |
| 463 | |
Anders Carlsson | 5f4307b | 2009-04-14 16:58:56 +0000 | [diff] [blame] | 464 | /// LoadCXXThis - Load the value of 'this'. This function is only valid while |
| 465 | /// generating code for an C++ member function. |
| 466 | llvm::Value *LoadCXXThis(); |
| 467 | |
Anders Carlsson | b14095a | 2009-04-17 00:06:03 +0000 | [diff] [blame] | 468 | void EmitCXXConstructorCall(const CXXConstructorDecl *D, CXXCtorType Type, |
| 469 | llvm::Value *This, |
| 470 | CallExpr::const_arg_iterator ArgBeg, |
| 471 | CallExpr::const_arg_iterator ArgEnd); |
| 472 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 473 | //===--------------------------------------------------------------------===// |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 474 | // Declaration Emission |
| 475 | //===--------------------------------------------------------------------===// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 476 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 477 | void EmitDecl(const Decl &D); |
Steve Naroff | 248a753 | 2008-04-15 22:42:06 +0000 | [diff] [blame] | 478 | void EmitBlockVarDecl(const VarDecl &D); |
| 479 | void EmitLocalBlockVarDecl(const VarDecl &D); |
| 480 | void EmitStaticBlockVarDecl(const VarDecl &D); |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 481 | |
| 482 | /// EmitParmDecl - Emit a ParmVarDecl or an ImplicitParamDecl. |
| 483 | void EmitParmDecl(const VarDecl &D, llvm::Value *Arg); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 484 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 485 | //===--------------------------------------------------------------------===// |
| 486 | // Statement Emission |
| 487 | //===--------------------------------------------------------------------===// |
| 488 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 489 | /// EmitStopPoint - Emit a debug stoppoint if we are emitting debug info. |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 490 | void EmitStopPoint(const Stmt *S); |
| 491 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 492 | /// EmitStmt - Emit the code for the statement \arg S. It is legal to call |
| 493 | /// this function even if there is no current insertion point. |
| 494 | /// |
| 495 | /// This function may clear the current insertion point; callers should use |
| 496 | /// EnsureInsertPoint if they wish to subsequently generate code without first |
| 497 | /// calling EmitBlock, EmitBranch, or EmitStmt. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 498 | void EmitStmt(const Stmt *S); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 499 | |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 500 | /// EmitSimpleStmt - Try to emit a "simple" statement which does not |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 501 | /// necessarily require an insertion point or debug information; typically |
| 502 | /// because the statement amounts to a jump or a container of other |
| 503 | /// statements. |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 504 | /// |
| 505 | /// \return True if the statement was handled. |
| 506 | bool EmitSimpleStmt(const Stmt *S); |
| 507 | |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 508 | RValue EmitCompoundStmt(const CompoundStmt &S, bool GetLast = false, |
| 509 | llvm::Value *AggLoc = 0, bool isAggVol = false); |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 510 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 511 | /// EmitLabel - Emit the block for the given label. It is legal to call this |
| 512 | /// function even if there is no current insertion point. |
Chris Lattner | 91d723d | 2008-07-26 20:23:23 +0000 | [diff] [blame] | 513 | void EmitLabel(const LabelStmt &S); // helper for EmitLabelStmt. |
Daniel Dunbar | a448fb2 | 2008-11-11 23:11:34 +0000 | [diff] [blame] | 514 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 515 | void EmitLabelStmt(const LabelStmt &S); |
| 516 | void EmitGotoStmt(const GotoStmt &S); |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 517 | void EmitIndirectGotoStmt(const IndirectGotoStmt &S); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 518 | void EmitIfStmt(const IfStmt &S); |
| 519 | void EmitWhileStmt(const WhileStmt &S); |
| 520 | void EmitDoStmt(const DoStmt &S); |
| 521 | void EmitForStmt(const ForStmt &S); |
| 522 | void EmitReturnStmt(const ReturnStmt &S); |
| 523 | void EmitDeclStmt(const DeclStmt &S); |
Daniel Dunbar | 0912425 | 2008-11-12 08:21:33 +0000 | [diff] [blame] | 524 | void EmitBreakStmt(const BreakStmt &S); |
| 525 | void EmitContinueStmt(const ContinueStmt &S); |
Devang Patel | 51b09f2 | 2007-10-04 23:45:31 +0000 | [diff] [blame] | 526 | void EmitSwitchStmt(const SwitchStmt &S); |
| 527 | void EmitDefaultStmt(const DefaultStmt &S); |
| 528 | void EmitCaseStmt(const CaseStmt &S); |
Devang Patel | c049e4f | 2007-10-08 20:57:48 +0000 | [diff] [blame] | 529 | void EmitCaseStmtRange(const CaseStmt &S); |
Anders Carlsson | fb1aeb8 | 2008-02-05 16:35:33 +0000 | [diff] [blame] | 530 | void EmitAsmStmt(const AsmStmt &S); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 531 | |
Anders Carlsson | 3d8400d | 2008-08-30 19:51:14 +0000 | [diff] [blame] | 532 | void EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S); |
Anders Carlsson | 64d5d6c | 2008-09-09 10:04:29 +0000 | [diff] [blame] | 533 | void EmitObjCAtTryStmt(const ObjCAtTryStmt &S); |
| 534 | void EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S); |
Chris Lattner | 10cac6f | 2008-11-15 21:26:17 +0000 | [diff] [blame] | 535 | void EmitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt &S); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 536 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 537 | //===--------------------------------------------------------------------===// |
| 538 | // LValue Expression Emission |
| 539 | //===--------------------------------------------------------------------===// |
| 540 | |
Daniel Dunbar | 13e8173 | 2009-02-05 07:09:07 +0000 | [diff] [blame] | 541 | /// GetUndefRValue - Get an appropriate 'undef' rvalue for the given type. |
| 542 | RValue GetUndefRValue(QualType Ty); |
| 543 | |
Daniel Dunbar | ce1d38b | 2009-01-09 16:50:52 +0000 | [diff] [blame] | 544 | /// EmitUnsupportedRValue - Emit a dummy r-value using the type of E |
| 545 | /// and issue an ErrorUnsupported style diagnostic (using the |
| 546 | /// provided Name). |
| 547 | RValue EmitUnsupportedRValue(const Expr *E, |
| 548 | const char *Name); |
| 549 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 550 | /// EmitUnsupportedLValue - Emit a dummy l-value using the type of E and issue |
| 551 | /// an ErrorUnsupported style diagnostic (using the provided Name). |
Daniel Dunbar | 6ba82a4 | 2008-08-25 20:45:57 +0000 | [diff] [blame] | 552 | LValue EmitUnsupportedLValue(const Expr *E, |
| 553 | const char *Name); |
| 554 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 555 | /// EmitLValue - Emit code to compute a designator that specifies the location |
| 556 | /// of the expression. |
| 557 | /// |
| 558 | /// This can return one of two things: a simple address or a bitfield |
| 559 | /// reference. In either case, the LLVM Value* in the LValue structure is |
| 560 | /// guaranteed to be an LLVM pointer type. |
| 561 | /// |
| 562 | /// If this returns a bitfield reference, nothing about the pointee type of |
| 563 | /// the LLVM value is known: For example, it may not be a pointer to an |
| 564 | /// integer. |
| 565 | /// |
| 566 | /// If this returns a normal address, and if the lvalue's C type is fixed |
| 567 | /// size, this method guarantees that the returned pointer type will point to |
| 568 | /// an LLVM type of the same size of the lvalue's type. If the lvalue has a |
| 569 | /// variable length type, this is not possible. |
| 570 | /// |
| 571 | LValue EmitLValue(const Expr *E); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 572 | |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 573 | /// EmitLoadOfScalar - Load a scalar value from an address, taking |
| 574 | /// care to appropriately convert from the memory representation to |
| 575 | /// the LLVM value representation. |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 576 | llvm::Value *EmitLoadOfScalar(llvm::Value *Addr, bool Volatile, |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 577 | QualType Ty); |
| 578 | |
| 579 | /// EmitStoreOfScalar - Store a scalar value to an address, taking |
| 580 | /// care to appropriately convert from the memory representation to |
| 581 | /// the LLVM value representation. |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 582 | void EmitStoreOfScalar(llvm::Value *Value, llvm::Value *Addr, |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 583 | bool Volatile); |
| 584 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 585 | /// EmitLoadOfLValue - Given an expression that represents a value lvalue, |
| 586 | /// this method emits the address of the lvalue, then loads the result as an |
| 587 | /// rvalue, returning the rvalue. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 588 | RValue EmitLoadOfLValue(LValue V, QualType LVType); |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 589 | RValue EmitLoadOfExtVectorElementLValue(LValue V, QualType LVType); |
Lauro Ramos Venancio | 3b8c22d | 2008-01-22 20:17:04 +0000 | [diff] [blame] | 590 | RValue EmitLoadOfBitfieldLValue(LValue LV, QualType ExprType); |
Daniel Dunbar | 85c59ed | 2008-08-29 08:11:39 +0000 | [diff] [blame] | 591 | RValue EmitLoadOfPropertyRefLValue(LValue LV, QualType ExprType); |
Fariborz Jahanian | 43f4470 | 2008-11-22 22:30:21 +0000 | [diff] [blame] | 592 | RValue EmitLoadOfKVCRefLValue(LValue LV, QualType ExprType); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 593 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 594 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 595 | /// EmitStoreThroughLValue - Store the specified rvalue into the specified |
| 596 | /// lvalue, where both are guaranteed to the have the same type, and that type |
| 597 | /// is 'Ty'. |
| 598 | void EmitStoreThroughLValue(RValue Src, LValue Dst, QualType Ty); |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 599 | void EmitStoreThroughExtVectorComponentLValue(RValue Src, LValue Dst, |
| 600 | QualType Ty); |
Daniel Dunbar | 85c59ed | 2008-08-29 08:11:39 +0000 | [diff] [blame] | 601 | void EmitStoreThroughPropertyRefLValue(RValue Src, LValue Dst, QualType Ty); |
Fariborz Jahanian | 43f4470 | 2008-11-22 22:30:21 +0000 | [diff] [blame] | 602 | void EmitStoreThroughKVCRefLValue(RValue Src, LValue Dst, QualType Ty); |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 603 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 604 | /// EmitStoreThroughLValue - Store Src into Dst with same constraints as |
| 605 | /// EmitStoreThroughLValue. |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 606 | /// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 607 | /// \param Result [out] - If non-null, this will be set to a Value* for the |
| 608 | /// bit-field contents after the store, appropriate for use as the result of |
| 609 | /// an assignment to the bit-field. |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 610 | void EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst, QualType Ty, |
| 611 | llvm::Value **Result=0); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 612 | |
Christopher Lamb | 22c940e | 2007-12-29 05:02:41 +0000 | [diff] [blame] | 613 | // Note: only availabe for agg return types |
Daniel Dunbar | 80e62c2 | 2008-09-04 03:20:13 +0000 | [diff] [blame] | 614 | LValue EmitBinaryOperatorLValue(const BinaryOperator *E); |
Daniel Dunbar | 5b5c9ef | 2009-02-11 20:59:32 +0000 | [diff] [blame] | 615 | // Note: only available for agg return types |
Christopher Lamb | 22c940e | 2007-12-29 05:02:41 +0000 | [diff] [blame] | 616 | LValue EmitCallExprLValue(const CallExpr *E); |
Daniel Dunbar | 5b5c9ef | 2009-02-11 20:59:32 +0000 | [diff] [blame] | 617 | // Note: only available for agg return types |
| 618 | LValue EmitVAArgExprLValue(const VAArgExpr *E); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 619 | LValue EmitDeclRefLValue(const DeclRefExpr *E); |
| 620 | LValue EmitStringLiteralLValue(const StringLiteral *E); |
Chris Lattner | eaf2bb8 | 2009-02-24 22:18:39 +0000 | [diff] [blame] | 621 | LValue EmitObjCEncodeExprLValue(const ObjCEncodeExpr *E); |
Daniel Dunbar | 662b71e | 2008-10-17 21:58:32 +0000 | [diff] [blame] | 622 | LValue EmitPredefinedFunctionName(unsigned Type); |
Chris Lattner | d9f6910 | 2008-08-10 01:53:14 +0000 | [diff] [blame] | 623 | LValue EmitPredefinedLValue(const PredefinedExpr *E); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 624 | LValue EmitUnaryOpLValue(const UnaryOperator *E); |
| 625 | LValue EmitArraySubscriptExpr(const ArraySubscriptExpr *E); |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 626 | LValue EmitExtVectorElementExpr(const ExtVectorElementExpr *E); |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 627 | LValue EmitMemberExpr(const MemberExpr *E); |
Eli Friedman | 06e863f | 2008-05-13 23:18:27 +0000 | [diff] [blame] | 628 | LValue EmitCompoundLiteralLValue(const CompoundLiteralExpr *E); |
Daniel Dunbar | 9034558 | 2009-03-24 02:38:23 +0000 | [diff] [blame] | 629 | LValue EmitConditionalOperator(const ConditionalOperator *E); |
Chris Lattner | 75dfeda | 2009-03-18 18:28:57 +0000 | [diff] [blame] | 630 | LValue EmitCastLValue(const CastExpr *E); |
Eli Friedman | 472778e | 2008-02-09 08:50:58 +0000 | [diff] [blame] | 631 | |
Daniel Dunbar | 2a03192 | 2009-04-22 05:08:15 +0000 | [diff] [blame] | 632 | llvm::Value *EmitIvarOffset(const ObjCInterfaceDecl *Interface, |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 633 | const ObjCIvarDecl *Ivar); |
Eli Friedman | 472778e | 2008-02-09 08:50:58 +0000 | [diff] [blame] | 634 | LValue EmitLValueForField(llvm::Value* Base, FieldDecl* Field, |
Eli Friedman | 1e692ac | 2008-06-13 23:01:12 +0000 | [diff] [blame] | 635 | bool isUnion, unsigned CVRQualifiers); |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 636 | LValue EmitLValueForIvar(QualType ObjectTy, |
| 637 | llvm::Value* Base, const ObjCIvarDecl *Ivar, |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 638 | unsigned CVRQualifiers); |
| 639 | |
Fariborz Jahanian | fd64bb6 | 2008-12-15 20:35:07 +0000 | [diff] [blame] | 640 | LValue EmitLValueForBitfield(llvm::Value* Base, FieldDecl* Field, |
Fariborz Jahanian | 598d3f6 | 2009-02-03 19:03:09 +0000 | [diff] [blame] | 641 | unsigned CVRQualifiers); |
Fariborz Jahanian | fd64bb6 | 2008-12-15 20:35:07 +0000 | [diff] [blame] | 642 | |
Mike Stump | a99038c | 2009-02-28 09:07:16 +0000 | [diff] [blame] | 643 | LValue EmitBlockDeclRefLValue(const BlockDeclRefExpr *E); |
| 644 | |
Argyrios Kyrtzidis | e3a09e6 | 2008-09-10 02:36:38 +0000 | [diff] [blame] | 645 | LValue EmitCXXConditionDeclLValue(const CXXConditionDeclExpr *E); |
| 646 | |
Daniel Dunbar | 0a04d77 | 2008-08-23 10:51:21 +0000 | [diff] [blame] | 647 | LValue EmitObjCMessageExprLValue(const ObjCMessageExpr *E); |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 648 | LValue EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E); |
Daniel Dunbar | 85c59ed | 2008-08-29 08:11:39 +0000 | [diff] [blame] | 649 | LValue EmitObjCPropertyRefLValue(const ObjCPropertyRefExpr *E); |
Fariborz Jahanian | 43f4470 | 2008-11-22 22:30:21 +0000 | [diff] [blame] | 650 | LValue EmitObjCKVCRefLValue(const ObjCKVCRefExpr *E); |
Chris Lattner | 6545994 | 2009-04-25 19:35:26 +0000 | [diff] [blame] | 651 | LValue EmitObjCSuperExprLValue(const ObjCSuperExpr *E); |
| 652 | LValue EmitStmtExprLValue(const StmtExpr *E); |
Daniel Dunbar | 0a04d77 | 2008-08-23 10:51:21 +0000 | [diff] [blame] | 653 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 654 | //===--------------------------------------------------------------------===// |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 655 | // Scalar Expression Emission |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 656 | //===--------------------------------------------------------------------===// |
| 657 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 658 | /// EmitCall - Generate a call of the given function, expecting the given |
| 659 | /// result type, and using the given argument list which specifies both the |
| 660 | /// LLVM arguments and the types they were derived from. |
Daniel Dunbar | c0ef9f5 | 2009-02-20 18:06:48 +0000 | [diff] [blame] | 661 | /// |
| 662 | /// \param TargetDecl - If given, the decl of the function in a |
| 663 | /// direct call; used to set attributes on the call (noreturn, |
| 664 | /// etc.). |
Daniel Dunbar | 88b5396 | 2009-02-02 22:03:45 +0000 | [diff] [blame] | 665 | RValue EmitCall(const CGFunctionInfo &FnInfo, |
| 666 | llvm::Value *Callee, |
Daniel Dunbar | c0ef9f5 | 2009-02-20 18:06:48 +0000 | [diff] [blame] | 667 | const CallArgList &Args, |
| 668 | const Decl *TargetDecl = 0); |
Daniel Dunbar | 19cd87e | 2008-08-30 03:02:31 +0000 | [diff] [blame] | 669 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 670 | RValue EmitCallExpr(const CallExpr *E); |
Anders Carlsson | 774e7c6 | 2009-04-03 22:50:24 +0000 | [diff] [blame] | 671 | RValue EmitCXXMemberCallExpr(const CXXMemberCallExpr *E); |
Ted Kremenek | 5549976 | 2008-06-17 02:43:46 +0000 | [diff] [blame] | 672 | |
Eli Friedman | 5193b8a | 2008-01-30 01:32:06 +0000 | [diff] [blame] | 673 | RValue EmitCallExpr(llvm::Value *Callee, QualType FnType, |
Ted Kremenek | 5549976 | 2008-06-17 02:43:46 +0000 | [diff] [blame] | 674 | CallExpr::const_arg_iterator ArgBeg, |
Daniel Dunbar | c0ef9f5 | 2009-02-20 18:06:48 +0000 | [diff] [blame] | 675 | CallExpr::const_arg_iterator ArgEnd, |
| 676 | const Decl *TargetDecl = 0); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 677 | |
Daniel Dunbar | ef2abfe | 2009-02-16 22:43:43 +0000 | [diff] [blame] | 678 | RValue EmitBuiltinExpr(const FunctionDecl *FD, |
| 679 | unsigned BuiltinID, const CallExpr *E); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 680 | |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 681 | RValue EmitBlockCallExpr(const CallExpr *E); |
Mike Stump | 09429b9 | 2009-02-17 17:00:02 +0000 | [diff] [blame] | 682 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 683 | /// EmitTargetBuiltinExpr - Emit the given builtin call. Returns 0 if the call |
| 684 | /// is unhandled by the current target. |
Daniel Dunbar | f02e9dd | 2008-10-10 00:24:54 +0000 | [diff] [blame] | 685 | llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
| 686 | |
Anders Carlsson | 564f1de | 2007-12-09 23:17:02 +0000 | [diff] [blame] | 687 | llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
| 688 | llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 689 | |
Anders Carlsson | cc23aca | 2007-12-10 19:35:18 +0000 | [diff] [blame] | 690 | llvm::Value *EmitShuffleVector(llvm::Value* V1, llvm::Value *V2, ...); |
Nate Begeman | 4119d1a | 2007-12-30 02:59:45 +0000 | [diff] [blame] | 691 | llvm::Value *EmitVector(llvm::Value * const *Vals, unsigned NumVals, |
| 692 | bool isSplat = false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 693 | |
Daniel Dunbar | ed7c618 | 2008-08-20 00:28:19 +0000 | [diff] [blame] | 694 | llvm::Value *EmitObjCProtocolExpr(const ObjCProtocolExpr *E); |
Chris Lattner | 7f02f72 | 2007-08-24 05:35:26 +0000 | [diff] [blame] | 695 | llvm::Value *EmitObjCStringLiteral(const ObjCStringLiteral *E); |
Chris Lattner | 8fdf328 | 2008-06-24 17:04:18 +0000 | [diff] [blame] | 696 | llvm::Value *EmitObjCSelectorExpr(const ObjCSelectorExpr *E); |
Daniel Dunbar | 8f2926b | 2008-08-23 03:46:30 +0000 | [diff] [blame] | 697 | RValue EmitObjCMessageExpr(const ObjCMessageExpr *E); |
Fariborz Jahanian | 5daf570 | 2008-11-22 18:39:36 +0000 | [diff] [blame] | 698 | RValue EmitObjCPropertyGet(const Expr *E); |
Fariborz Jahanian | f469557 | 2009-03-20 19:18:21 +0000 | [diff] [blame] | 699 | RValue EmitObjCSuperPropertyGet(const Expr *Exp, const Selector &S); |
Fariborz Jahanian | 43f4470 | 2008-11-22 22:30:21 +0000 | [diff] [blame] | 700 | void EmitObjCPropertySet(const Expr *E, RValue Src); |
Fariborz Jahanian | f469557 | 2009-03-20 19:18:21 +0000 | [diff] [blame] | 701 | void EmitObjCSuperPropertySet(const Expr *E, const Selector &S, RValue Src); |
Chris Lattner | 8fdf328 | 2008-06-24 17:04:18 +0000 | [diff] [blame] | 702 | |
| 703 | |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 704 | //===--------------------------------------------------------------------===// |
Chris Lattner | bfc0c1a | 2007-08-26 23:13:56 +0000 | [diff] [blame] | 705 | // Expression Emission |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 706 | //===--------------------------------------------------------------------===// |
Chris Lattner | bfc0c1a | 2007-08-26 23:13:56 +0000 | [diff] [blame] | 707 | |
| 708 | // Expressions are broken into three classes: scalar, complex, aggregate. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 709 | |
| 710 | /// EmitScalarExpr - Emit the computation of the specified expression of LLVM |
| 711 | /// scalar type, returning the result. |
Chris Lattner | 7f02f72 | 2007-08-24 05:35:26 +0000 | [diff] [blame] | 712 | llvm::Value *EmitScalarExpr(const Expr *E); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 713 | |
Chris Lattner | 3707b25 | 2007-08-26 06:48:56 +0000 | [diff] [blame] | 714 | /// EmitScalarConversion - Emit a conversion from the specified type to the |
| 715 | /// specified destination type, both of which are LLVM scalar types. |
| 716 | llvm::Value *EmitScalarConversion(llvm::Value *Src, QualType SrcTy, |
| 717 | QualType DstTy); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 718 | |
Chris Lattner | 4f1a7b3 | 2007-08-26 16:34:22 +0000 | [diff] [blame] | 719 | /// EmitComplexToScalarConversion - Emit a conversion from the specified |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 720 | /// complex type to the specified destination type, where the destination type |
| 721 | /// is an LLVM scalar type. |
Chris Lattner | 4f1a7b3 | 2007-08-26 16:34:22 +0000 | [diff] [blame] | 722 | llvm::Value *EmitComplexToScalarConversion(ComplexPairTy Src, QualType SrcTy, |
| 723 | QualType DstTy); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 724 | |
| 725 | |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 726 | /// EmitAggExpr - Emit the computation of the specified expression of |
| 727 | /// aggregate type. The result is computed into DestPtr. Note that if |
| 728 | /// DestPtr is null, the value of the aggregate expression is not needed. |
| 729 | void EmitAggExpr(const Expr *E, llvm::Value *DestPtr, bool VolatileDest); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 730 | |
Chris Lattner | b6ef18a | 2007-08-21 05:54:00 +0000 | [diff] [blame] | 731 | /// EmitComplexExpr - Emit the computation of the specified expression of |
Chris Lattner | 23b1cdb | 2007-08-23 23:43:33 +0000 | [diff] [blame] | 732 | /// complex type, returning the result. |
Chris Lattner | 58dee10 | 2007-08-21 16:57:55 +0000 | [diff] [blame] | 733 | ComplexPairTy EmitComplexExpr(const Expr *E); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 734 | |
Chris Lattner | 23b1cdb | 2007-08-23 23:43:33 +0000 | [diff] [blame] | 735 | /// EmitComplexExprIntoAddr - Emit the computation of the specified expression |
| 736 | /// of complex type, storing into the specified Value*. |
Chris Lattner | 190dbe2 | 2007-08-26 16:22:13 +0000 | [diff] [blame] | 737 | void EmitComplexExprIntoAddr(const Expr *E, llvm::Value *DestAddr, |
| 738 | bool DestIsVolatile); |
Daniel Dunbar | 7f8ea5c | 2008-08-30 05:35:15 +0000 | [diff] [blame] | 739 | |
| 740 | /// StoreComplexToAddr - Store a complex number into the specified address. |
| 741 | void StoreComplexToAddr(ComplexPairTy V, llvm::Value *DestAddr, |
| 742 | bool DestIsVolatile); |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 743 | /// LoadComplexFromAddr - Load a complex number from the specified address. |
| 744 | ComplexPairTy LoadComplexFromAddr(llvm::Value *SrcAddr, bool SrcIsVolatile); |
Chris Lattner | 2621fd1 | 2008-05-08 05:58:21 +0000 | [diff] [blame] | 745 | |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 746 | /// CreateStaticBlockVarDecl - Create a zero-initialized LLVM global |
| 747 | /// for a static block var decl. |
| 748 | llvm::GlobalVariable * CreateStaticBlockVarDecl(const VarDecl &D, |
| 749 | const char *Separator, |
| 750 | llvm::GlobalValue::LinkageTypes |
| 751 | Linkage); |
| 752 | |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 753 | /// GenerateStaticCXXBlockVarDecl - Create the initializer for a C++ |
| 754 | /// runtime initialized static block var decl. |
| 755 | void GenerateStaticCXXBlockVarDeclInit(const VarDecl &D, |
| 756 | llvm::GlobalVariable *GV); |
Anders Carlsson | e1b29ef | 2008-08-22 16:00:37 +0000 | [diff] [blame] | 757 | |
Anders Carlsson | 31ccf37 | 2009-05-03 17:47:16 +0000 | [diff] [blame^] | 758 | void EmitCXXConstructExpr(llvm::Value *Dest, const CXXConstructExpr *E); |
Anders Carlsson | b14095a | 2009-04-17 00:06:03 +0000 | [diff] [blame] | 759 | |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 760 | //===--------------------------------------------------------------------===// |
| 761 | // Internal Helpers |
| 762 | //===--------------------------------------------------------------------===// |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 763 | |
Chris Lattner | 0946ccd | 2008-11-11 07:41:27 +0000 | [diff] [blame] | 764 | /// ContainsLabel - Return true if the statement contains a label in it. If |
| 765 | /// this statement is not executed normally, it not containing a label means |
| 766 | /// that we can just remove the code. |
| 767 | static bool ContainsLabel(const Stmt *S, bool IgnoreCaseStmts = false); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 768 | |
Daniel Dunbar | 4bc0455 | 2008-11-12 10:12:14 +0000 | [diff] [blame] | 769 | /// ConstantFoldsToSimpleInteger - If the specified expression does not fold |
Chris Lattner | 31a0984 | 2008-11-12 08:04:58 +0000 | [diff] [blame] | 770 | /// to a constant, or if it does but contains a label, return 0. If it |
| 771 | /// constant folds to 'true' and does not contain a label, return 1, if it |
| 772 | /// constant folds to 'false' and does not contain a label, return -1. |
| 773 | int ConstantFoldsToSimpleInteger(const Expr *Cond); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 774 | |
Chris Lattner | 31a0984 | 2008-11-12 08:04:58 +0000 | [diff] [blame] | 775 | /// EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g. for an |
| 776 | /// if statement) to the specified blocks. Based on the condition, this might |
| 777 | /// try to simplify the codegen of the conditional based on the branch. |
Chris Lattner | 9bc47e2 | 2008-11-12 07:46:33 +0000 | [diff] [blame] | 778 | void EmitBranchOnBoolExpr(const Expr *Cond, llvm::BasicBlock *TrueBlock, |
Daniel Dunbar | 4bc0455 | 2008-11-12 10:12:14 +0000 | [diff] [blame] | 779 | llvm::BasicBlock *FalseBlock); |
Chris Lattner | 31a0984 | 2008-11-12 08:04:58 +0000 | [diff] [blame] | 780 | private: |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 781 | |
Daniel Dunbar | 0ffb125 | 2008-08-04 16:51:22 +0000 | [diff] [blame] | 782 | /// EmitIndirectSwitches - Emit code for all of the switch |
| 783 | /// instructions in IndirectSwitches. |
| 784 | void EmitIndirectSwitches(); |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 785 | |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 786 | void EmitReturnOfRValue(RValue RV, QualType Ty); |
| 787 | |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 788 | /// ExpandTypeFromArgs - Reconstruct a structure of type \arg Ty |
| 789 | /// from function arguments into \arg Dst. See ABIArgInfo::Expand. |
| 790 | /// |
| 791 | /// \param AI - The first function argument of the expansion. |
| 792 | /// \return The argument following the last expanded function |
| 793 | /// argument. |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 794 | llvm::Function::arg_iterator |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 795 | ExpandTypeFromArgs(QualType Ty, LValue Dst, |
| 796 | llvm::Function::arg_iterator AI); |
| 797 | |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 798 | /// ExpandTypeToArgs - Expand an RValue \arg Src, with the LLVM type for \arg |
| 799 | /// Ty, into individual arguments on the provided vector \arg Args. See |
| 800 | /// ABIArgInfo::Expand. |
| 801 | void ExpandTypeToArgs(QualType Ty, RValue Src, |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 802 | llvm::SmallVector<llvm::Value*, 16> &Args); |
Anders Carlsson | c8c7b18 | 2009-01-11 19:40:10 +0000 | [diff] [blame] | 803 | |
| 804 | llvm::Value* EmitAsmInput(const AsmStmt &S, TargetInfo::ConstraintInfo Info, |
| 805 | const Expr *InputExpr, std::string &ConstraintStr); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 806 | |
Anders Carlsson | c71c845 | 2009-02-07 23:50:39 +0000 | [diff] [blame] | 807 | /// EmitCleanupBlock - emits a single cleanup block. |
| 808 | void EmitCleanupBlock(); |
| 809 | |
Anders Carlsson | 87eaf17 | 2009-02-08 00:50:42 +0000 | [diff] [blame] | 810 | /// AddBranchFixup - adds a branch instruction to the list of fixups for the |
| 811 | /// current cleanup scope. |
| 812 | void AddBranchFixup(llvm::BranchInst *BI); |
Mike Stump | 0dd9e88 | 2009-02-08 23:14:22 +0000 | [diff] [blame] | 813 | |
Anders Carlsson | 0139bb9 | 2009-04-08 20:47:54 +0000 | [diff] [blame] | 814 | /// EmitCallArg - Emit a single call argument. |
| 815 | RValue EmitCallArg(const Expr *E, QualType ArgType); |
| 816 | |
| 817 | /// EmitCallArgs - Emit call arguments for a function. |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 818 | /// The CallArgTypeInfo parameter is used for iterating over the known |
| 819 | /// argument types of the function being called. |
| 820 | template<typename T> |
| 821 | void EmitCallArgs(CallArgList& Args, const T* CallArgTypeInfo, |
Anders Carlsson | 0139bb9 | 2009-04-08 20:47:54 +0000 | [diff] [blame] | 822 | CallExpr::const_arg_iterator ArgBeg, |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 823 | CallExpr::const_arg_iterator ArgEnd) { |
| 824 | CallExpr::const_arg_iterator Arg = ArgBeg; |
Anders Carlsson | 0139bb9 | 2009-04-08 20:47:54 +0000 | [diff] [blame] | 825 | |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 826 | // First, use the argument types that the type info knows about |
| 827 | if (CallArgTypeInfo) { |
| 828 | for (typename T::arg_type_iterator I = CallArgTypeInfo->arg_type_begin(), |
| 829 | E = CallArgTypeInfo->arg_type_end(); I != E; ++I, ++Arg) { |
| 830 | QualType ArgType = *I; |
| 831 | |
| 832 | assert(getContext().getCanonicalType(ArgType.getNonReferenceType()). |
| 833 | getTypePtr() == |
| 834 | getContext().getCanonicalType(Arg->getType()).getTypePtr() && |
| 835 | "type mismatch in call argument!"); |
| 836 | |
| 837 | Args.push_back(std::make_pair(EmitCallArg(*Arg, ArgType), |
| 838 | ArgType)); |
| 839 | } |
| 840 | |
| 841 | // Either we've emitted all the call args, or we have a call to a |
| 842 | // variadic function. |
Eli Friedman | 1768fab | 2009-04-19 20:21:56 +0000 | [diff] [blame] | 843 | assert((Arg == ArgEnd || CallArgTypeInfo->isVariadic()) && |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 844 | "Extra arguments in non-variadic function!"); |
| 845 | |
| 846 | } |
| 847 | |
| 848 | // If we still have any arguments, emit them using the type of the argument. |
| 849 | for (; Arg != ArgEnd; ++Arg) { |
| 850 | QualType ArgType = Arg->getType(); |
| 851 | Args.push_back(std::make_pair(EmitCallArg(*Arg, ArgType), |
| 852 | ArgType)); |
| 853 | } |
| 854 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 855 | }; |
Anders Carlsson | af23f69 | 2009-04-18 20:20:22 +0000 | [diff] [blame] | 856 | |
| 857 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 858 | } // end namespace CodeGen |
| 859 | } // end namespace clang |
| 860 | |
| 861 | #endif |