Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1 | //===--- CGDecl.cpp - Emit LLVM Code for declarations ---------------------===// |
| 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 | // |
| 10 | // This contains code to emit Decl nodes as LLVM code. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
Sanjiv Gupta | cc9b163 | 2008-05-30 10:30:31 +0000 | [diff] [blame] | 14 | #include "CGDebugInfo.h" |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 15 | #include "CodeGenFunction.h" |
Anders Carlsson | 1a86b33 | 2007-10-17 00:52:43 +0000 | [diff] [blame] | 16 | #include "CodeGenModule.h" |
Daniel Dunbar | de7fb84 | 2008-08-11 05:00:27 +0000 | [diff] [blame] | 17 | #include "clang/AST/ASTContext.h" |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 18 | #include "clang/AST/Decl.h" |
Anders Carlsson | 19567ee | 2008-08-25 01:38:19 +0000 | [diff] [blame] | 19 | #include "clang/AST/DeclObjC.h" |
Nate Begeman | 8bd4afe | 2008-04-19 04:17:09 +0000 | [diff] [blame] | 20 | #include "clang/Basic/SourceManager.h" |
Chris Lattner | 2621fd1 | 2008-05-08 05:58:21 +0000 | [diff] [blame] | 21 | #include "clang/Basic/TargetInfo.h" |
Anders Carlsson | 1a86b33 | 2007-10-17 00:52:43 +0000 | [diff] [blame] | 22 | #include "llvm/GlobalVariable.h" |
Anders Carlsson | 5d46315 | 2008-12-12 07:38:43 +0000 | [diff] [blame] | 23 | #include "llvm/Intrinsics.h" |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 24 | #include "llvm/Target/TargetData.h" |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 25 | #include "llvm/Type.h" |
| 26 | using namespace clang; |
| 27 | using namespace CodeGen; |
| 28 | |
| 29 | |
| 30 | void CodeGenFunction::EmitDecl(const Decl &D) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 31 | switch (D.getKind()) { |
| 32 | default: assert(0 && "Unknown decl kind!"); |
Chris Lattner | aa9fc46 | 2007-10-08 21:37:32 +0000 | [diff] [blame] | 33 | case Decl::ParmVar: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 34 | assert(0 && "Parmdecls should not be in declstmts!"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 35 | case Decl::Function: // void X(); |
Argyrios Kyrtzidis | 35bc082 | 2008-10-15 00:42:39 +0000 | [diff] [blame] | 36 | case Decl::Record: // struct/union/class X; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 37 | case Decl::Enum: // enum X; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 38 | case Decl::EnumConstant: // enum ? { X = ? } |
Argyrios Kyrtzidis | 35bc082 | 2008-10-15 00:42:39 +0000 | [diff] [blame] | 39 | case Decl::CXXRecord: // struct/union/class X; [C++] |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 40 | // None of these decls require codegen support. |
| 41 | return; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 42 | |
Daniel Dunbar | 662174c8 | 2008-08-29 17:28:43 +0000 | [diff] [blame] | 43 | case Decl::Var: { |
| 44 | const VarDecl &VD = cast<VarDecl>(D); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 45 | assert(VD.isBlockVarDecl() && |
Daniel Dunbar | 662174c8 | 2008-08-29 17:28:43 +0000 | [diff] [blame] | 46 | "Should not see file-scope variables inside a function!"); |
| 47 | return EmitBlockVarDecl(VD); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 48 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 49 | |
Anders Carlsson | fcdbb93 | 2008-12-20 21:51:53 +0000 | [diff] [blame] | 50 | case Decl::Typedef: { // typedef int X; |
| 51 | const TypedefDecl &TD = cast<TypedefDecl>(D); |
| 52 | QualType Ty = TD.getUnderlyingType(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 53 | |
Anders Carlsson | fcdbb93 | 2008-12-20 21:51:53 +0000 | [diff] [blame] | 54 | if (Ty->isVariablyModifiedType()) |
| 55 | EmitVLASize(Ty); |
| 56 | } |
Daniel Dunbar | 662174c8 | 2008-08-29 17:28:43 +0000 | [diff] [blame] | 57 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 58 | } |
| 59 | |
| 60 | /// EmitBlockVarDecl - This method handles emission of any variable declaration |
| 61 | /// inside a function, including static vars etc. |
Steve Naroff | 248a753 | 2008-04-15 22:42:06 +0000 | [diff] [blame] | 62 | void CodeGenFunction::EmitBlockVarDecl(const VarDecl &D) { |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 63 | if (D.hasAttr<AsmLabelAttr>()) |
Fariborz Jahanian | ba8639d | 2009-03-30 20:32:06 +0000 | [diff] [blame] | 64 | CGM.ErrorUnsupported(&D, "__asm__"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 65 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 66 | switch (D.getStorageClass()) { |
Daniel Dunbar | 5466c7b | 2009-04-14 02:25:56 +0000 | [diff] [blame] | 67 | case VarDecl::None: |
| 68 | case VarDecl::Auto: |
| 69 | case VarDecl::Register: |
| 70 | return EmitLocalBlockVarDecl(D); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 71 | case VarDecl::Static: |
Anders Carlsson | 1a86b33 | 2007-10-17 00:52:43 +0000 | [diff] [blame] | 72 | return EmitStaticBlockVarDecl(D); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 73 | case VarDecl::Extern: |
Daniel Dunbar | 5466c7b | 2009-04-14 02:25:56 +0000 | [diff] [blame] | 74 | case VarDecl::PrivateExtern: |
Lauro Ramos Venancio | fea90b8 | 2008-02-16 22:30:38 +0000 | [diff] [blame] | 75 | // Don't emit it now, allow it to be emitted lazily on its first use. |
| 76 | return; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 77 | } |
Daniel Dunbar | 5466c7b | 2009-04-14 02:25:56 +0000 | [diff] [blame] | 78 | |
| 79 | assert(0 && "Unknown storage class"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 80 | } |
| 81 | |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 82 | llvm::GlobalVariable * |
| 83 | CodeGenFunction::CreateStaticBlockVarDecl(const VarDecl &D, |
| 84 | const char *Separator, |
| 85 | llvm::GlobalValue::LinkageTypes |
| 86 | Linkage) { |
Chris Lattner | 8bcfc5b | 2008-04-06 23:10:54 +0000 | [diff] [blame] | 87 | QualType Ty = D.getType(); |
Eli Friedman | 3c2b317 | 2008-02-15 12:20:59 +0000 | [diff] [blame] | 88 | assert(Ty->isConstantSizeType() && "VLAs can't be static"); |
Nate Begeman | 8bd4afe | 2008-04-19 04:17:09 +0000 | [diff] [blame] | 89 | |
Anders Carlsson | 17c35ac | 2009-04-02 03:29:47 +0000 | [diff] [blame] | 90 | std::string Name; |
| 91 | if (getContext().getLangOptions().CPlusPlus) { |
| 92 | Name = CGM.getMangledName(&D); |
| 93 | } else { |
| 94 | std::string ContextName; |
| 95 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(CurFuncDecl)) |
| 96 | ContextName = CGM.getMangledName(FD); |
| 97 | else if (isa<ObjCMethodDecl>(CurFuncDecl)) |
Daniel Dunbar | 0d9c54c | 2009-07-26 08:32:30 +0000 | [diff] [blame] | 98 | ContextName = CurFn->getName(); |
Anders Carlsson | 17c35ac | 2009-04-02 03:29:47 +0000 | [diff] [blame] | 99 | else |
| 100 | assert(0 && "Unknown context for block var decl"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 101 | |
Anders Carlsson | 17c35ac | 2009-04-02 03:29:47 +0000 | [diff] [blame] | 102 | Name = ContextName + Separator + D.getNameAsString(); |
| 103 | } |
Nate Begeman | 8bd4afe | 2008-04-19 04:17:09 +0000 | [diff] [blame] | 104 | |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 105 | const llvm::Type *LTy = CGM.getTypes().ConvertTypeForMem(Ty); |
Anders Carlsson | 41f8a13 | 2009-09-26 18:16:06 +0000 | [diff] [blame] | 106 | llvm::GlobalVariable *GV = |
| 107 | new llvm::GlobalVariable(CGM.getModule(), LTy, |
| 108 | Ty.isConstant(getContext()), Linkage, |
| 109 | CGM.EmitNullConstant(D.getType()), Name, 0, |
| 110 | D.isThreadSpecified(), Ty.getAddressSpace()); |
| 111 | GV->setAlignment(getContext().getDeclAlignInBytes(&D)); |
| 112 | return GV; |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 113 | } |
| 114 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 115 | void CodeGenFunction::EmitStaticBlockVarDecl(const VarDecl &D) { |
Daniel Dunbar | a985b31 | 2009-02-25 19:45:19 +0000 | [diff] [blame] | 116 | llvm::Value *&DMEntry = LocalDeclMap[&D]; |
| 117 | assert(DMEntry == 0 && "Decl already exists in localdeclmap!"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 118 | |
| 119 | llvm::GlobalVariable *GV = |
Daniel Dunbar | a985b31 | 2009-02-25 19:45:19 +0000 | [diff] [blame] | 120 | CreateStaticBlockVarDecl(D, ".", llvm::GlobalValue::InternalLinkage); |
| 121 | |
Daniel Dunbar | e5731f8 | 2009-02-25 20:08:33 +0000 | [diff] [blame] | 122 | // Store into LocalDeclMap before generating initializer to handle |
| 123 | // circular references. |
| 124 | DMEntry = GV; |
| 125 | |
Eli Friedman | c62aad8 | 2009-04-20 03:54:15 +0000 | [diff] [blame] | 126 | // Make sure to evaluate VLA bounds now so that we have them for later. |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 127 | // |
| 128 | // FIXME: Can this happen? |
Eli Friedman | c62aad8 | 2009-04-20 03:54:15 +0000 | [diff] [blame] | 129 | if (D.getType()->isVariablyModifiedType()) |
| 130 | EmitVLASize(D.getType()); |
| 131 | |
Daniel Dunbar | a985b31 | 2009-02-25 19:45:19 +0000 | [diff] [blame] | 132 | if (D.getInit()) { |
Anders Carlsson | e9352cc | 2009-04-08 04:48:15 +0000 | [diff] [blame] | 133 | llvm::Constant *Init = CGM.EmitConstantExpr(D.getInit(), D.getType(), this); |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 134 | |
| 135 | // If constant emission failed, then this should be a C++ static |
| 136 | // initializer. |
| 137 | if (!Init) { |
| 138 | if (!getContext().getLangOptions().CPlusPlus) |
| 139 | CGM.ErrorUnsupported(D.getInit(), "constant l-value expression"); |
| 140 | else |
Anders Carlsson | 3b2e16b | 2009-08-08 21:45:14 +0000 | [diff] [blame] | 141 | EmitStaticCXXBlockVarDeclInit(D, GV); |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 142 | } else { |
| 143 | // The initializer may differ in type from the global. Rewrite |
Eli Friedman | 074dda6 | 2009-03-04 04:22:58 +0000 | [diff] [blame] | 144 | // the global to match the initializer. (We have to do this |
| 145 | // because some types, like unions, can't be completely represented |
| 146 | // in the LLVM type system.) |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 147 | if (GV->getType() != Init->getType()) { |
| 148 | llvm::GlobalVariable *OldGV = GV; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 149 | |
Owen Anderson | 1c431b3 | 2009-07-08 19:05:04 +0000 | [diff] [blame] | 150 | GV = new llvm::GlobalVariable(CGM.getModule(), Init->getType(), |
| 151 | OldGV->isConstant(), |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 152 | OldGV->getLinkage(), Init, "", |
Owen Anderson | 1c431b3 | 2009-07-08 19:05:04 +0000 | [diff] [blame] | 153 | 0, D.isThreadSpecified(), |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 154 | D.getType().getAddressSpace()); |
| 155 | |
| 156 | // Steal the name of the old global |
| 157 | GV->takeName(OldGV); |
| 158 | |
| 159 | // Replace all uses of the old global with the new global |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 160 | llvm::Constant *NewPtrForOldDecl = |
Owen Anderson | 3c4972d | 2009-07-29 18:54:39 +0000 | [diff] [blame] | 161 | llvm::ConstantExpr::getBitCast(GV, OldGV->getType()); |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 162 | OldGV->replaceAllUsesWith(NewPtrForOldDecl); |
| 163 | |
| 164 | // Erase the old global, since it is no longer used. |
| 165 | OldGV->eraseFromParent(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 166 | } |
Daniel Dunbar | 0096acf | 2009-02-25 19:24:29 +0000 | [diff] [blame] | 167 | |
| 168 | GV->setInitializer(Init); |
| 169 | } |
| 170 | } |
Nate Begeman | 8bd4afe | 2008-04-19 04:17:09 +0000 | [diff] [blame] | 171 | |
Daniel Dunbar | 30510ab | 2009-02-12 23:32:54 +0000 | [diff] [blame] | 172 | // FIXME: Merge attribute handling. |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 173 | if (const AnnotateAttr *AA = D.getAttr<AnnotateAttr>()) { |
Nate Begeman | 8bd4afe | 2008-04-19 04:17:09 +0000 | [diff] [blame] | 174 | SourceManager &SM = CGM.getContext().getSourceManager(); |
| 175 | llvm::Constant *Ann = |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 176 | CGM.EmitAnnotateAttr(GV, AA, |
Chris Lattner | f7cf85b | 2009-01-16 07:36:28 +0000 | [diff] [blame] | 177 | SM.getInstantiationLineNumber(D.getLocation())); |
Nate Begeman | 8bd4afe | 2008-04-19 04:17:09 +0000 | [diff] [blame] | 178 | CGM.AddAnnotation(Ann); |
| 179 | } |
| 180 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 181 | if (const SectionAttr *SA = D.getAttr<SectionAttr>()) |
Daniel Dunbar | 30510ab | 2009-02-12 23:32:54 +0000 | [diff] [blame] | 182 | GV->setSection(SA->getName()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 183 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 184 | if (D.hasAttr<UsedAttr>()) |
Daniel Dunbar | 5c61d97 | 2009-02-13 22:08:43 +0000 | [diff] [blame] | 185 | CGM.AddUsedGlobal(GV); |
| 186 | |
Daniel Dunbar | e5731f8 | 2009-02-25 20:08:33 +0000 | [diff] [blame] | 187 | // We may have to cast the constant because of the initializer |
| 188 | // mismatch above. |
| 189 | // |
| 190 | // FIXME: It is really dangerous to store this in the map; if anyone |
| 191 | // RAUW's the GV uses of this constant will be invalid. |
Eli Friedman | 2659052 | 2008-06-08 01:23:18 +0000 | [diff] [blame] | 192 | const llvm::Type *LTy = CGM.getTypes().ConvertTypeForMem(D.getType()); |
| 193 | const llvm::Type *LPtrTy = |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 194 | llvm::PointerType::get(LTy, D.getType().getAddressSpace()); |
Owen Anderson | 3c4972d | 2009-07-29 18:54:39 +0000 | [diff] [blame] | 195 | DMEntry = llvm::ConstantExpr::getBitCast(GV, LPtrTy); |
Sanjiv Gupta | 686226b | 2008-06-05 08:59:10 +0000 | [diff] [blame] | 196 | |
| 197 | // Emit global variable debug descriptor for static vars. |
Anders Carlsson | e896d98 | 2009-02-13 08:11:52 +0000 | [diff] [blame] | 198 | CGDebugInfo *DI = getDebugInfo(); |
Mike Stump | 4451bd9 | 2009-02-20 00:19:45 +0000 | [diff] [blame] | 199 | if (DI) { |
Daniel Dunbar | 66031a5 | 2008-10-17 16:15:48 +0000 | [diff] [blame] | 200 | DI->setLocation(D.getLocation()); |
Sanjiv Gupta | 686226b | 2008-06-05 08:59:10 +0000 | [diff] [blame] | 201 | DI->EmitGlobalVariable(static_cast<llvm::GlobalVariable *>(GV), &D); |
| 202 | } |
Anders Carlsson | 1a86b33 | 2007-10-17 00:52:43 +0000 | [diff] [blame] | 203 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 204 | |
Anders Carlsson | 7dfa407 | 2009-09-12 02:14:24 +0000 | [diff] [blame] | 205 | unsigned CodeGenFunction::getByRefValueLLVMField(const ValueDecl *VD) const { |
| 206 | assert(ByRefValueInfo.count(VD) && "Did not find value!"); |
| 207 | |
| 208 | return ByRefValueInfo.find(VD)->second.second; |
| 209 | } |
| 210 | |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 211 | /// BuildByRefType - This routine changes a __block variable declared as T x |
| 212 | /// into: |
| 213 | /// |
| 214 | /// struct { |
| 215 | /// void *__isa; |
| 216 | /// void *__forwarding; |
| 217 | /// int32_t __flags; |
| 218 | /// int32_t __size; |
Mike Stump | 39605b4 | 2009-09-22 02:12:52 +0000 | [diff] [blame] | 219 | /// void *__copy_helper; // only if needed |
| 220 | /// void *__destroy_helper; // only if needed |
| 221 | /// char padding[X]; // only if needed |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 222 | /// T x; |
| 223 | /// } x |
| 224 | /// |
Anders Carlsson | 9ad5513 | 2009-09-09 02:51:03 +0000 | [diff] [blame] | 225 | const llvm::Type *CodeGenFunction::BuildByRefType(const ValueDecl *D) { |
Anders Carlsson | 7dfa407 | 2009-09-12 02:14:24 +0000 | [diff] [blame] | 226 | std::pair<const llvm::Type *, unsigned> &Info = ByRefValueInfo[D]; |
| 227 | if (Info.first) |
| 228 | return Info.first; |
| 229 | |
Anders Carlsson | 9ad5513 | 2009-09-09 02:51:03 +0000 | [diff] [blame] | 230 | QualType Ty = D->getType(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 231 | |
Anders Carlsson | 18be84c | 2009-09-12 02:44:18 +0000 | [diff] [blame] | 232 | std::vector<const llvm::Type *> Types; |
Anders Carlsson | 3604386 | 2009-09-10 01:32:12 +0000 | [diff] [blame] | 233 | |
Anders Carlsson | 18be84c | 2009-09-12 02:44:18 +0000 | [diff] [blame] | 234 | const llvm::PointerType *Int8PtrTy |
| 235 | = llvm::PointerType::getUnqual(llvm::Type::getInt8Ty(VMContext)); |
| 236 | |
Anders Carlsson | 3604386 | 2009-09-10 01:32:12 +0000 | [diff] [blame] | 237 | llvm::PATypeHolder ByRefTypeHolder = llvm::OpaqueType::get(VMContext); |
| 238 | |
Anders Carlsson | 18be84c | 2009-09-12 02:44:18 +0000 | [diff] [blame] | 239 | // void *__isa; |
| 240 | Types.push_back(Int8PtrTy); |
| 241 | |
| 242 | // void *__forwarding; |
| 243 | Types.push_back(llvm::PointerType::getUnqual(ByRefTypeHolder)); |
| 244 | |
| 245 | // int32_t __flags; |
| 246 | Types.push_back(llvm::Type::getInt32Ty(VMContext)); |
| 247 | |
| 248 | // int32_t __size; |
| 249 | Types.push_back(llvm::Type::getInt32Ty(VMContext)); |
| 250 | |
| 251 | bool HasCopyAndDispose = BlockRequiresCopying(Ty); |
| 252 | if (HasCopyAndDispose) { |
| 253 | /// void *__copy_helper; |
| 254 | Types.push_back(Int8PtrTy); |
| 255 | |
| 256 | /// void *__destroy_helper; |
| 257 | Types.push_back(Int8PtrTy); |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 258 | } |
Anders Carlsson | 18be84c | 2009-09-12 02:44:18 +0000 | [diff] [blame] | 259 | |
| 260 | bool Packed = false; |
| 261 | unsigned Align = getContext().getDeclAlignInBytes(D); |
| 262 | if (Align > Target.getPointerAlign(0) / 8) { |
| 263 | // We have to insert padding. |
| 264 | |
| 265 | // The struct above has 2 32-bit integers. |
| 266 | unsigned CurrentOffsetInBytes = 4 * 2; |
| 267 | |
| 268 | // And either 2 or 4 pointers. |
| 269 | CurrentOffsetInBytes += (HasCopyAndDispose ? 4 : 2) * |
| 270 | CGM.getTargetData().getTypeAllocSize(Int8PtrTy); |
| 271 | |
| 272 | // Align the offset. |
| 273 | unsigned AlignedOffsetInBytes = |
| 274 | llvm::RoundUpToAlignment(CurrentOffsetInBytes, Align); |
| 275 | |
| 276 | unsigned NumPaddingBytes = AlignedOffsetInBytes - CurrentOffsetInBytes; |
Anders Carlsson | e0c8822 | 2009-09-13 17:55:13 +0000 | [diff] [blame] | 277 | if (NumPaddingBytes > 0) { |
| 278 | const llvm::Type *Ty = llvm::Type::getInt8Ty(VMContext); |
| 279 | // FIXME: We need a sema error for alignment larger than the minimum of the |
| 280 | // maximal stack alignmint and the alignment of malloc on the system. |
| 281 | if (NumPaddingBytes > 1) |
| 282 | Ty = llvm::ArrayType::get(Ty, NumPaddingBytes); |
Anders Carlsson | 18be84c | 2009-09-12 02:44:18 +0000 | [diff] [blame] | 283 | |
Anders Carlsson | e0c8822 | 2009-09-13 17:55:13 +0000 | [diff] [blame] | 284 | Types.push_back(Ty); |
Anders Carlsson | 18be84c | 2009-09-12 02:44:18 +0000 | [diff] [blame] | 285 | |
Anders Carlsson | e0c8822 | 2009-09-13 17:55:13 +0000 | [diff] [blame] | 286 | // We want a packed struct. |
| 287 | Packed = true; |
| 288 | } |
Anders Carlsson | 18be84c | 2009-09-12 02:44:18 +0000 | [diff] [blame] | 289 | } |
| 290 | |
| 291 | // T x; |
| 292 | Types.push_back(ConvertType(Ty)); |
Anders Carlsson | 7dfa407 | 2009-09-12 02:14:24 +0000 | [diff] [blame] | 293 | |
Anders Carlsson | 18be84c | 2009-09-12 02:44:18 +0000 | [diff] [blame] | 294 | const llvm::Type *T = llvm::StructType::get(VMContext, Types, Packed); |
Anders Carlsson | 3604386 | 2009-09-10 01:32:12 +0000 | [diff] [blame] | 295 | |
| 296 | cast<llvm::OpaqueType>(ByRefTypeHolder.get())->refineAbstractTypeTo(T); |
| 297 | CGM.getModule().addTypeName("struct.__block_byref_" + D->getNameAsString(), |
| 298 | ByRefTypeHolder.get()); |
| 299 | |
Anders Carlsson | 7dfa407 | 2009-09-12 02:14:24 +0000 | [diff] [blame] | 300 | Info.first = ByRefTypeHolder.get(); |
Anders Carlsson | 18be84c | 2009-09-12 02:44:18 +0000 | [diff] [blame] | 301 | |
| 302 | Info.second = Types.size() - 1; |
Anders Carlsson | 7dfa407 | 2009-09-12 02:14:24 +0000 | [diff] [blame] | 303 | |
| 304 | return Info.first; |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 305 | } |
| 306 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 307 | /// EmitLocalBlockVarDecl - Emit code and set up an entry in LocalDeclMap for a |
| 308 | /// variable declaration with auto, register, or no storage class specifier. |
Chris Lattner | 2621fd1 | 2008-05-08 05:58:21 +0000 | [diff] [blame] | 309 | /// These turn into simple stack objects, or GlobalValues depending on target. |
Steve Naroff | 248a753 | 2008-04-15 22:42:06 +0000 | [diff] [blame] | 310 | void CodeGenFunction::EmitLocalBlockVarDecl(const VarDecl &D) { |
Chris Lattner | 8bcfc5b | 2008-04-06 23:10:54 +0000 | [diff] [blame] | 311 | QualType Ty = D.getType(); |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 312 | bool isByRef = D.hasAttr<BlocksAttr>(); |
Mike Stump | 797b632 | 2009-03-05 01:23:13 +0000 | [diff] [blame] | 313 | bool needsDispose = false; |
Mike Stump | 3899a7f | 2009-06-05 23:26:36 +0000 | [diff] [blame] | 314 | unsigned Align = 0; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 315 | |
| 316 | llvm::Value *DeclPtr; |
Eli Friedman | 3c2b317 | 2008-02-15 12:20:59 +0000 | [diff] [blame] | 317 | if (Ty->isConstantSizeType()) { |
Chris Lattner | 2621fd1 | 2008-05-08 05:58:21 +0000 | [diff] [blame] | 318 | if (!Target.useGlobalsForAutomaticVariables()) { |
| 319 | // A normal fixed sized variable becomes an alloca in the entry block. |
Eli Friedman | a3460ac | 2009-03-04 04:25:14 +0000 | [diff] [blame] | 320 | const llvm::Type *LTy = ConvertTypeForMem(Ty); |
Mike Stump | 3899a7f | 2009-06-05 23:26:36 +0000 | [diff] [blame] | 321 | Align = getContext().getDeclAlignInBytes(&D); |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 322 | if (isByRef) |
Anders Carlsson | 9ad5513 | 2009-09-09 02:51:03 +0000 | [diff] [blame] | 323 | LTy = BuildByRefType(&D); |
Chris Lattner | f146684 | 2009-03-22 00:24:14 +0000 | [diff] [blame] | 324 | llvm::AllocaInst *Alloc = CreateTempAlloca(LTy); |
| 325 | Alloc->setName(D.getNameAsString().c_str()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 326 | |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 327 | if (isByRef) |
Mike Stump | 3899a7f | 2009-06-05 23:26:36 +0000 | [diff] [blame] | 328 | Align = std::max(Align, unsigned(Target.getPointerAlign(0) / 8)); |
| 329 | Alloc->setAlignment(Align); |
Eli Friedman | 77eedd6 | 2008-05-31 21:20:41 +0000 | [diff] [blame] | 330 | DeclPtr = Alloc; |
Chris Lattner | 2621fd1 | 2008-05-08 05:58:21 +0000 | [diff] [blame] | 331 | } else { |
| 332 | // Targets that don't support recursion emit locals as globals. |
| 333 | const char *Class = |
| 334 | D.getStorageClass() == VarDecl::Register ? ".reg." : ".auto."; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 335 | DeclPtr = CreateStaticBlockVarDecl(D, Class, |
Daniel Dunbar | a985b31 | 2009-02-25 19:45:19 +0000 | [diff] [blame] | 336 | llvm::GlobalValue |
| 337 | ::InternalLinkage); |
Chris Lattner | 2621fd1 | 2008-05-08 05:58:21 +0000 | [diff] [blame] | 338 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 339 | |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 340 | // FIXME: Can this happen? |
Anders Carlsson | 60d3541 | 2008-12-20 20:46:34 +0000 | [diff] [blame] | 341 | if (Ty->isVariablyModifiedType()) |
| 342 | EmitVLASize(Ty); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 343 | } else { |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 344 | EnsureInsertPoint(); |
| 345 | |
Anders Carlsson | 5ecb1b9 | 2009-02-09 20:41:50 +0000 | [diff] [blame] | 346 | if (!DidCallStackSave) { |
Anders Carlsson | 5d46315 | 2008-12-12 07:38:43 +0000 | [diff] [blame] | 347 | // Save the stack. |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 348 | const llvm::Type *LTy = |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 349 | llvm::PointerType::getUnqual(llvm::Type::getInt8Ty(VMContext)); |
Anders Carlsson | 5d46315 | 2008-12-12 07:38:43 +0000 | [diff] [blame] | 350 | llvm::Value *Stack = CreateTempAlloca(LTy, "saved_stack"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 351 | |
Anders Carlsson | 5d46315 | 2008-12-12 07:38:43 +0000 | [diff] [blame] | 352 | llvm::Value *F = CGM.getIntrinsic(llvm::Intrinsic::stacksave); |
| 353 | llvm::Value *V = Builder.CreateCall(F); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 354 | |
Anders Carlsson | 5d46315 | 2008-12-12 07:38:43 +0000 | [diff] [blame] | 355 | Builder.CreateStore(V, Stack); |
Anders Carlsson | 5ecb1b9 | 2009-02-09 20:41:50 +0000 | [diff] [blame] | 356 | |
| 357 | DidCallStackSave = true; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 358 | |
Anders Carlsson | 5ecb1b9 | 2009-02-09 20:41:50 +0000 | [diff] [blame] | 359 | { |
| 360 | // Push a cleanup block and restore the stack there. |
| 361 | CleanupScope scope(*this); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 362 | |
Anders Carlsson | 5ecb1b9 | 2009-02-09 20:41:50 +0000 | [diff] [blame] | 363 | V = Builder.CreateLoad(Stack, "tmp"); |
| 364 | llvm::Value *F = CGM.getIntrinsic(llvm::Intrinsic::stackrestore); |
| 365 | Builder.CreateCall(F, V); |
| 366 | } |
Anders Carlsson | 5d46315 | 2008-12-12 07:38:43 +0000 | [diff] [blame] | 367 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 368 | |
Anders Carlsson | 5d46315 | 2008-12-12 07:38:43 +0000 | [diff] [blame] | 369 | // Get the element type. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 370 | const llvm::Type *LElemTy = ConvertTypeForMem(Ty); |
Anders Carlsson | 5d46315 | 2008-12-12 07:38:43 +0000 | [diff] [blame] | 371 | const llvm::Type *LElemPtrTy = |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 372 | llvm::PointerType::get(LElemTy, D.getType().getAddressSpace()); |
Anders Carlsson | 5d46315 | 2008-12-12 07:38:43 +0000 | [diff] [blame] | 373 | |
Anders Carlsson | 60d3541 | 2008-12-20 20:46:34 +0000 | [diff] [blame] | 374 | llvm::Value *VLASize = EmitVLASize(Ty); |
Anders Carlsson | 5d46315 | 2008-12-12 07:38:43 +0000 | [diff] [blame] | 375 | |
Anders Carlsson | 96f2147 | 2009-02-05 19:43:10 +0000 | [diff] [blame] | 376 | // Downcast the VLA size expression |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 377 | VLASize = Builder.CreateIntCast(VLASize, llvm::Type::getInt32Ty(VMContext), |
| 378 | false, "tmp"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 379 | |
Anders Carlsson | 5d46315 | 2008-12-12 07:38:43 +0000 | [diff] [blame] | 380 | // Allocate memory for the array. |
Anders Carlsson | 41f8a13 | 2009-09-26 18:16:06 +0000 | [diff] [blame] | 381 | llvm::AllocaInst *VLA = |
| 382 | Builder.CreateAlloca(llvm::Type::getInt8Ty(VMContext), VLASize, "vla"); |
| 383 | VLA->setAlignment(getContext().getDeclAlignInBytes(&D)); |
| 384 | |
Eli Friedman | 8f39f5e | 2008-12-20 23:11:59 +0000 | [diff] [blame] | 385 | DeclPtr = Builder.CreateBitCast(VLA, LElemPtrTy, "tmp"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 386 | } |
Eli Friedman | 8f39f5e | 2008-12-20 23:11:59 +0000 | [diff] [blame] | 387 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 388 | llvm::Value *&DMEntry = LocalDeclMap[&D]; |
| 389 | assert(DMEntry == 0 && "Decl already exists in localdeclmap!"); |
| 390 | DMEntry = DeclPtr; |
Sanjiv Gupta | cc9b163 | 2008-05-30 10:30:31 +0000 | [diff] [blame] | 391 | |
| 392 | // Emit debug info for local var declaration. |
Anders Carlsson | e896d98 | 2009-02-13 08:11:52 +0000 | [diff] [blame] | 393 | if (CGDebugInfo *DI = getDebugInfo()) { |
Daniel Dunbar | 25b6ebf | 2009-07-19 07:03:11 +0000 | [diff] [blame] | 394 | assert(HaveInsertPoint() && "Unexpected unreachable point!"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 395 | |
Daniel Dunbar | 66031a5 | 2008-10-17 16:15:48 +0000 | [diff] [blame] | 396 | DI->setLocation(D.getLocation()); |
Sanjiv Gupta | 4381d4b | 2009-05-22 13:54:25 +0000 | [diff] [blame] | 397 | if (Target.useGlobalsForAutomaticVariables()) { |
| 398 | DI->EmitGlobalVariable(static_cast<llvm::GlobalVariable *>(DeclPtr), &D); |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 399 | } else |
| 400 | DI->EmitDeclareOfAutoVariable(&D, DeclPtr, Builder); |
Sanjiv Gupta | cc9b163 | 2008-05-30 10:30:31 +0000 | [diff] [blame] | 401 | } |
| 402 | |
Chris Lattner | 1978596 | 2007-07-12 00:39:48 +0000 | [diff] [blame] | 403 | // If this local has an initializer, emit it now. |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 404 | const Expr *Init = D.getInit(); |
| 405 | |
| 406 | // If we are at an unreachable point, we don't need to emit the initializer |
| 407 | // unless it contains a label. |
| 408 | if (!HaveInsertPoint()) { |
| 409 | if (!ContainsLabel(Init)) |
| 410 | Init = 0; |
| 411 | else |
| 412 | EnsureInsertPoint(); |
| 413 | } |
| 414 | |
| 415 | if (Init) { |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 416 | llvm::Value *Loc = DeclPtr; |
Anders Carlsson | 7dfa407 | 2009-09-12 02:14:24 +0000 | [diff] [blame] | 417 | if (isByRef) |
| 418 | Loc = Builder.CreateStructGEP(DeclPtr, getByRefValueLLVMField(&D), |
| 419 | D.getNameAsString()); |
| 420 | |
Eli Friedman | 4a18784 | 2009-05-27 05:39:06 +0000 | [diff] [blame] | 421 | if (Ty->isReferenceType()) { |
Anders Carlsson | 14c5cbf | 2009-08-16 07:36:22 +0000 | [diff] [blame] | 422 | RValue RV = EmitReferenceBindingToExpr(Init, Ty, /*IsInitializer=*/true); |
| 423 | EmitStoreOfScalar(RV.getScalarVal(), Loc, false, Ty); |
Eli Friedman | 4a18784 | 2009-05-27 05:39:06 +0000 | [diff] [blame] | 424 | } else if (!hasAggregateLLVMType(Init->getType())) { |
Chris Lattner | d31beb1 | 2007-08-26 07:29:23 +0000 | [diff] [blame] | 425 | llvm::Value *V = EmitScalarExpr(Init); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 426 | EmitStoreOfScalar(V, Loc, D.getType().isVolatileQualified(), |
Anders Carlsson | b4aa466 | 2009-05-19 18:50:41 +0000 | [diff] [blame] | 427 | D.getType()); |
Chris Lattner | 9b2dc28 | 2008-04-04 16:54:41 +0000 | [diff] [blame] | 428 | } else if (Init->getType()->isAnyComplexType()) { |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 429 | EmitComplexExprIntoAddr(Init, Loc, D.getType().isVolatileQualified()); |
Chris Lattner | 9a19edf | 2007-08-26 05:13:54 +0000 | [diff] [blame] | 430 | } else { |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 431 | EmitAggExpr(Init, Loc, D.getType().isVolatileQualified()); |
| 432 | } |
| 433 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 434 | |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 435 | if (isByRef) { |
| 436 | const llvm::PointerType *PtrToInt8Ty |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 437 | = llvm::PointerType::getUnqual(llvm::Type::getInt8Ty(VMContext)); |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 438 | |
Daniel Dunbar | d286f05 | 2009-07-19 06:58:07 +0000 | [diff] [blame] | 439 | EnsureInsertPoint(); |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 440 | llvm::Value *isa_field = Builder.CreateStructGEP(DeclPtr, 0); |
| 441 | llvm::Value *forwarding_field = Builder.CreateStructGEP(DeclPtr, 1); |
| 442 | llvm::Value *flags_field = Builder.CreateStructGEP(DeclPtr, 2); |
| 443 | llvm::Value *size_field = Builder.CreateStructGEP(DeclPtr, 3); |
| 444 | llvm::Value *V; |
| 445 | int flag = 0; |
| 446 | int flags = 0; |
| 447 | |
Mike Stump | f4bc312 | 2009-03-07 06:04:31 +0000 | [diff] [blame] | 448 | needsDispose = true; |
Mike Stump | 00470a1 | 2009-03-05 08:32:30 +0000 | [diff] [blame] | 449 | |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 450 | if (Ty->isBlockPointerType()) { |
| 451 | flag |= BLOCK_FIELD_IS_BLOCK; |
| 452 | flags |= BLOCK_HAS_COPY_DISPOSE; |
| 453 | } else if (BlockRequiresCopying(Ty)) { |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 454 | flag |= BLOCK_FIELD_IS_OBJECT; |
Mike Stump | 1851b68 | 2009-03-06 04:53:30 +0000 | [diff] [blame] | 455 | flags |= BLOCK_HAS_COPY_DISPOSE; |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 456 | } |
Mike Stump | f4bc312 | 2009-03-07 06:04:31 +0000 | [diff] [blame] | 457 | |
| 458 | // FIXME: Someone double check this. |
| 459 | if (Ty.isObjCGCWeak()) |
| 460 | flag |= BLOCK_FIELD_IS_WEAK; |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 461 | |
| 462 | int isa = 0; |
| 463 | if (flag&BLOCK_FIELD_IS_WEAK) |
| 464 | isa = 1; |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 465 | V = llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), isa); |
Mike Stump | a4f668f | 2009-03-06 01:33:24 +0000 | [diff] [blame] | 466 | V = Builder.CreateIntToPtr(V, PtrToInt8Ty, "isa"); |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 467 | Builder.CreateStore(V, isa_field); |
| 468 | |
Anders Carlsson | 3604386 | 2009-09-10 01:32:12 +0000 | [diff] [blame] | 469 | Builder.CreateStore(DeclPtr, forwarding_field); |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 470 | |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 471 | V = llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), flags); |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 472 | Builder.CreateStore(V, flags_field); |
| 473 | |
Mike Stump | 00470a1 | 2009-03-05 08:32:30 +0000 | [diff] [blame] | 474 | const llvm::Type *V1; |
| 475 | V1 = cast<llvm::PointerType>(DeclPtr->getType())->getElementType(); |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 476 | V = llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), |
Mike Stump | 00470a1 | 2009-03-05 08:32:30 +0000 | [diff] [blame] | 477 | (CGM.getTargetData().getTypeStoreSizeInBits(V1) |
| 478 | / 8)); |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 479 | Builder.CreateStore(V, size_field); |
| 480 | |
| 481 | if (flags & BLOCK_HAS_COPY_DISPOSE) { |
Mike Stump | 00470a1 | 2009-03-05 08:32:30 +0000 | [diff] [blame] | 482 | BlockHasCopyDispose = true; |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 483 | llvm::Value *copy_helper = Builder.CreateStructGEP(DeclPtr, 4); |
Mike Stump | 3899a7f | 2009-06-05 23:26:36 +0000 | [diff] [blame] | 484 | Builder.CreateStore(BuildbyrefCopyHelper(DeclPtr->getType(), flag, Align), |
Mike Stump | ee09422 | 2009-03-06 06:12:24 +0000 | [diff] [blame] | 485 | copy_helper); |
Mike Stump | dab514f | 2009-03-04 03:23:46 +0000 | [diff] [blame] | 486 | |
Mike Stump | 1851b68 | 2009-03-06 04:53:30 +0000 | [diff] [blame] | 487 | llvm::Value *destroy_helper = Builder.CreateStructGEP(DeclPtr, 5); |
Mike Stump | 3899a7f | 2009-06-05 23:26:36 +0000 | [diff] [blame] | 488 | Builder.CreateStore(BuildbyrefDestroyHelper(DeclPtr->getType(), flag, |
| 489 | Align), |
Mike Stump | 1851b68 | 2009-03-06 04:53:30 +0000 | [diff] [blame] | 490 | destroy_helper); |
Chris Lattner | 9a19edf | 2007-08-26 05:13:54 +0000 | [diff] [blame] | 491 | } |
Chris Lattner | 7f02f72 | 2007-08-24 05:35:26 +0000 | [diff] [blame] | 492 | } |
Anders Carlsson | 69c68b7 | 2009-02-07 23:51:38 +0000 | [diff] [blame] | 493 | |
Fariborz Jahanian | 6ca0b32 | 2009-08-03 20:20:07 +0000 | [diff] [blame] | 494 | // Handle CXX destruction of variables. |
Fariborz Jahanian | 667f36a | 2009-08-03 20:51:29 +0000 | [diff] [blame] | 495 | QualType DtorTy(Ty); |
| 496 | if (const ArrayType *Array = DtorTy->getAs<ArrayType>()) |
| 497 | DtorTy = Array->getElementType(); |
| 498 | if (const RecordType *RT = DtorTy->getAs<RecordType>()) |
Fariborz Jahanian | 6ca0b32 | 2009-08-03 20:20:07 +0000 | [diff] [blame] | 499 | if (CXXRecordDecl *ClassDecl = dyn_cast<CXXRecordDecl>(RT->getDecl())) { |
| 500 | if (!ClassDecl->hasTrivialDestructor()) { |
| 501 | const CXXDestructorDecl *D = ClassDecl->getDestructor(getContext()); |
| 502 | assert(D && "EmitLocalBlockVarDecl - destructor is nul"); |
Fariborz Jahanian | 667f36a | 2009-08-03 20:51:29 +0000 | [diff] [blame] | 503 | assert(!Ty->getAs<ArrayType>() && "FIXME - destruction of arrays NYI"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 504 | |
Fariborz Jahanian | 6ca0b32 | 2009-08-03 20:20:07 +0000 | [diff] [blame] | 505 | CleanupScope scope(*this); |
| 506 | EmitCXXDestructorCall(D, Dtor_Complete, DeclPtr); |
| 507 | } |
| 508 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 509 | |
Anders Carlsson | 69c68b7 | 2009-02-07 23:51:38 +0000 | [diff] [blame] | 510 | // Handle the cleanup attribute |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 511 | if (const CleanupAttr *CA = D.getAttr<CleanupAttr>()) { |
Anders Carlsson | 69c68b7 | 2009-02-07 23:51:38 +0000 | [diff] [blame] | 512 | const FunctionDecl *FD = CA->getFunctionDecl(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 513 | |
Anders Carlsson | 555b4bb | 2009-09-10 23:43:36 +0000 | [diff] [blame] | 514 | llvm::Constant* F = CGM.GetAddrOfFunction(FD); |
Anders Carlsson | 69c68b7 | 2009-02-07 23:51:38 +0000 | [diff] [blame] | 515 | assert(F && "Could not find function!"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 516 | |
Anders Carlsson | 69c68b7 | 2009-02-07 23:51:38 +0000 | [diff] [blame] | 517 | CleanupScope scope(*this); |
| 518 | |
Anders Carlsson | cabec03 | 2009-04-26 00:34:20 +0000 | [diff] [blame] | 519 | const CGFunctionInfo &Info = CGM.getTypes().getFunctionInfo(FD); |
| 520 | |
| 521 | // In some cases, the type of the function argument will be different from |
| 522 | // the type of the pointer. An example of this is |
| 523 | // void f(void* arg); |
| 524 | // __attribute__((cleanup(f))) void *g; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 525 | // |
Anders Carlsson | cabec03 | 2009-04-26 00:34:20 +0000 | [diff] [blame] | 526 | // To fix this we insert a bitcast here. |
| 527 | QualType ArgTy = Info.arg_begin()->type; |
| 528 | DeclPtr = Builder.CreateBitCast(DeclPtr, ConvertType(ArgTy)); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 529 | |
Anders Carlsson | 69c68b7 | 2009-02-07 23:51:38 +0000 | [diff] [blame] | 530 | CallArgList Args; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 531 | Args.push_back(std::make_pair(RValue::get(DeclPtr), |
Anders Carlsson | 69c68b7 | 2009-02-07 23:51:38 +0000 | [diff] [blame] | 532 | getContext().getPointerType(D.getType()))); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 533 | |
Anders Carlsson | cabec03 | 2009-04-26 00:34:20 +0000 | [diff] [blame] | 534 | EmitCall(Info, F, Args); |
Anders Carlsson | 69c68b7 | 2009-02-07 23:51:38 +0000 | [diff] [blame] | 535 | } |
Mike Stump | 797b632 | 2009-03-05 01:23:13 +0000 | [diff] [blame] | 536 | |
Mike Stump | d9e0fae | 2009-03-05 02:34:38 +0000 | [diff] [blame] | 537 | if (needsDispose && CGM.getLangOptions().getGCMode() != LangOptions::GCOnly) { |
Mike Stump | 797b632 | 2009-03-05 01:23:13 +0000 | [diff] [blame] | 538 | CleanupScope scope(*this); |
Mike Stump | 1851b68 | 2009-03-06 04:53:30 +0000 | [diff] [blame] | 539 | llvm::Value *V = Builder.CreateStructGEP(DeclPtr, 1, "forwarding"); |
| 540 | V = Builder.CreateLoad(V, false); |
| 541 | BuildBlockRelease(V); |
Mike Stump | 797b632 | 2009-03-05 01:23:13 +0000 | [diff] [blame] | 542 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 543 | } |
| 544 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 545 | /// Emit an alloca (or GlobalValue depending on target) |
Chris Lattner | 2621fd1 | 2008-05-08 05:58:21 +0000 | [diff] [blame] | 546 | /// for the specified parameter and set up LocalDeclMap. |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 547 | void CodeGenFunction::EmitParmDecl(const VarDecl &D, llvm::Value *Arg) { |
| 548 | // FIXME: Why isn't ImplicitParamDecl a ParmVarDecl? |
Sanjiv Gupta | 31fc07d | 2008-10-31 09:52:39 +0000 | [diff] [blame] | 549 | assert((isa<ParmVarDecl>(D) || isa<ImplicitParamDecl>(D)) && |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 550 | "Invalid argument to EmitParmDecl"); |
Chris Lattner | 8bcfc5b | 2008-04-06 23:10:54 +0000 | [diff] [blame] | 551 | QualType Ty = D.getType(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 552 | |
Devang Patel | e234292 | 2009-10-08 18:53:37 +0000 | [diff] [blame^] | 553 | if (CGDebugInfo *DI = getDebugInfo()) { |
| 554 | DI->setLocation(D.getLocation()); |
| 555 | DI->EmitStopPoint(CurFn, Builder); |
| 556 | } |
| 557 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 558 | llvm::Value *DeclPtr; |
Eli Friedman | 3c2b317 | 2008-02-15 12:20:59 +0000 | [diff] [blame] | 559 | if (!Ty->isConstantSizeType()) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 560 | // Variable sized values always are passed by-reference. |
| 561 | DeclPtr = Arg; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 562 | } else { |
Dan Gohman | d79a726 | 2008-05-22 22:12:56 +0000 | [diff] [blame] | 563 | // A fixed sized single-value variable becomes an alloca in the entry block. |
Eli Friedman | a3460ac | 2009-03-04 04:25:14 +0000 | [diff] [blame] | 564 | const llvm::Type *LTy = ConvertTypeForMem(Ty); |
Dan Gohman | d79a726 | 2008-05-22 22:12:56 +0000 | [diff] [blame] | 565 | if (LTy->isSingleValueType()) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 566 | // TODO: Alignment |
Chris Lattner | 39f34e9 | 2008-11-24 04:00:27 +0000 | [diff] [blame] | 567 | std::string Name = D.getNameAsString(); |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 568 | Name += ".addr"; |
Chris Lattner | f146684 | 2009-03-22 00:24:14 +0000 | [diff] [blame] | 569 | DeclPtr = CreateTempAlloca(LTy); |
| 570 | DeclPtr->setName(Name.c_str()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 571 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 572 | // Store the initial value into the alloca. |
Anders Carlsson | b4aa466 | 2009-05-19 18:50:41 +0000 | [diff] [blame] | 573 | EmitStoreOfScalar(Arg, DeclPtr, Ty.isVolatileQualified(), Ty); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 574 | } else { |
| 575 | // Otherwise, if this is an aggregate, just use the input pointer. |
| 576 | DeclPtr = Arg; |
| 577 | } |
Chris Lattner | 39f34e9 | 2008-11-24 04:00:27 +0000 | [diff] [blame] | 578 | Arg->setName(D.getNameAsString()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 579 | } |
| 580 | |
| 581 | llvm::Value *&DMEntry = LocalDeclMap[&D]; |
| 582 | assert(DMEntry == 0 && "Decl already exists in localdeclmap!"); |
| 583 | DMEntry = DeclPtr; |
Sanjiv Gupta | cc9b163 | 2008-05-30 10:30:31 +0000 | [diff] [blame] | 584 | |
| 585 | // Emit debug info for param declaration. |
Devang Patel | e234292 | 2009-10-08 18:53:37 +0000 | [diff] [blame^] | 586 | if (CGDebugInfo *DI = getDebugInfo()) |
Chris Lattner | 9c85ba3 | 2008-11-10 06:08:34 +0000 | [diff] [blame] | 587 | DI->EmitDeclareOfArgVariable(&D, DeclPtr, Builder); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 588 | } |
| 589 | |