Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 1 | //===--- CGBlocks.cpp - Emit LLVM Code for declarations -------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This contains code to emit blocks. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "CodeGenFunction.h" |
| 15 | #include "CodeGenModule.h" |
| 16 | #include "llvm/Module.h" |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 17 | #include "llvm/Target/TargetData.h" |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 18 | |
| 19 | #include <algorithm> |
| 20 | |
| 21 | using namespace clang; |
| 22 | using namespace CodeGen; |
| 23 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 24 | enum { |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 25 | BLOCK_NEEDS_FREE = (1 << 24), |
| 26 | BLOCK_HAS_COPY_DISPOSE = (1 << 25), |
| 27 | BLOCK_HAS_CXX_OBJ = (1 << 26), |
| 28 | BLOCK_IS_GC = (1 << 27), |
| 29 | BLOCK_IS_GLOBAL = (1 << 28), |
| 30 | BLOCK_HAS_DESCRIPTOR = (1 << 29) |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 31 | }; |
| 32 | |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 33 | llvm::Constant *CodeGenFunction::BuildDescriptorBlockDecl(uint64_t Size) { |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 34 | const llvm::PointerType *PtrToInt8Ty |
| 35 | = llvm::PointerType::getUnqual(llvm::Type::Int8Ty); |
Mike Stump | 56129b1 | 2009-02-13 16:55:51 +0000 | [diff] [blame] | 36 | const llvm::Type *UnsignedLongTy |
| 37 | = CGM.getTypes().ConvertType(getContext().UnsignedLongTy); |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 38 | llvm::Constant *C; |
| 39 | std::vector<llvm::Constant*> Elts; |
| 40 | |
| 41 | // reserved |
Mike Stump | 56129b1 | 2009-02-13 16:55:51 +0000 | [diff] [blame] | 42 | C = llvm::ConstantInt::get(UnsignedLongTy, 0); |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 43 | Elts.push_back(C); |
| 44 | |
| 45 | // Size |
Mike Stump | d684000 | 2009-02-21 20:07:44 +0000 | [diff] [blame] | 46 | // FIXME: What is the right way to say this doesn't fit? We should give |
| 47 | // a user diagnostic in that case. Better fix would be to change the |
| 48 | // API to size_t. |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 49 | C = llvm::ConstantInt::get(UnsignedLongTy, Size); |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 50 | Elts.push_back(C); |
| 51 | |
| 52 | if (BlockHasCopyDispose) { |
| 53 | // copy_func_helper_decl |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 54 | // FIXME: implement |
Mike Stump | 56129b1 | 2009-02-13 16:55:51 +0000 | [diff] [blame] | 55 | C = llvm::ConstantInt::get(UnsignedLongTy, 0); |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 56 | C = llvm::ConstantExpr::getBitCast(C, PtrToInt8Ty); |
| 57 | Elts.push_back(C); |
| 58 | |
| 59 | // destroy_func_decl |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 60 | // FIXME: implement |
Mike Stump | 56129b1 | 2009-02-13 16:55:51 +0000 | [diff] [blame] | 61 | C = llvm::ConstantInt::get(UnsignedLongTy, 0); |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 62 | C = llvm::ConstantExpr::getBitCast(C, PtrToInt8Ty); |
| 63 | Elts.push_back(C); |
| 64 | } |
| 65 | |
| 66 | C = llvm::ConstantStruct::get(Elts); |
| 67 | |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 68 | C = new llvm::GlobalVariable(C->getType(), true, |
| 69 | llvm::GlobalValue::InternalLinkage, |
Mike Stump | 7d6dc4f | 2009-02-13 20:17:16 +0000 | [diff] [blame] | 70 | C, "__block_descriptor_tmp", &CGM.getModule()); |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 71 | return C; |
| 72 | } |
| 73 | |
Mike Stump | f99f1d0 | 2009-02-13 17:23:42 +0000 | [diff] [blame] | 74 | llvm::Constant *CodeGenModule::getNSConcreteGlobalBlock() { |
| 75 | if (NSConcreteGlobalBlock) |
| 76 | return NSConcreteGlobalBlock; |
| 77 | |
| 78 | const llvm::PointerType *PtrToInt8Ty |
| 79 | = llvm::PointerType::getUnqual(llvm::Type::Int8Ty); |
Mike Stump | f744895 | 2009-02-13 19:38:12 +0000 | [diff] [blame] | 80 | // FIXME: We should have a CodeGenModule::AddRuntimeVariable that does the |
Mike Stump | f99f1d0 | 2009-02-13 17:23:42 +0000 | [diff] [blame] | 81 | // same thing as CreateRuntimeFunction if there's already a variable with |
| 82 | // the same name. |
| 83 | NSConcreteGlobalBlock |
| 84 | = new llvm::GlobalVariable(PtrToInt8Ty, false, |
| 85 | llvm::GlobalValue::ExternalLinkage, |
| 86 | 0, "_NSConcreteGlobalBlock", |
| 87 | &getModule()); |
| 88 | |
| 89 | return NSConcreteGlobalBlock; |
| 90 | } |
| 91 | |
Mike Stump | 59c5b11 | 2009-02-13 19:29:27 +0000 | [diff] [blame] | 92 | llvm::Constant *CodeGenModule::getNSConcreteStackBlock() { |
| 93 | if (NSConcreteStackBlock) |
| 94 | return NSConcreteStackBlock; |
| 95 | |
| 96 | const llvm::PointerType *PtrToInt8Ty |
| 97 | = llvm::PointerType::getUnqual(llvm::Type::Int8Ty); |
Mike Stump | f744895 | 2009-02-13 19:38:12 +0000 | [diff] [blame] | 98 | // FIXME: We should have a CodeGenModule::AddRuntimeVariable that does the |
Mike Stump | 59c5b11 | 2009-02-13 19:29:27 +0000 | [diff] [blame] | 99 | // same thing as CreateRuntimeFunction if there's already a variable with |
| 100 | // the same name. |
| 101 | NSConcreteStackBlock |
| 102 | = new llvm::GlobalVariable(PtrToInt8Ty, false, |
| 103 | llvm::GlobalValue::ExternalLinkage, |
| 104 | 0, "_NSConcreteStackBlock", |
| 105 | &getModule()); |
| 106 | |
| 107 | return NSConcreteStackBlock; |
| 108 | } |
| 109 | |
Mike Stump | bd65cac | 2009-02-19 01:01:04 +0000 | [diff] [blame] | 110 | // FIXME: Push most into CGM, passing down a few bits, like current |
| 111 | // function name. |
Mike Stump | 8a2b4b1 | 2009-02-25 23:33:13 +0000 | [diff] [blame] | 112 | llvm::Value *CodeGenFunction::BuildBlockLiteralTmp(const BlockExpr *BE) { |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 113 | bool insideFunction = false; |
| 114 | bool BlockRefDeclList = false; |
| 115 | bool BlockByrefDeclList = false; |
| 116 | |
| 117 | std::vector<llvm::Constant*> Elts; |
| 118 | llvm::Constant *C; |
Mike Stump | 8a2b4b1 | 2009-02-25 23:33:13 +0000 | [diff] [blame] | 119 | llvm::Value *V; |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 120 | |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 121 | { |
| 122 | // C = BuildBlockStructInitlist(); |
| 123 | unsigned int flags = BLOCK_HAS_DESCRIPTOR; |
| 124 | |
| 125 | if (BlockHasCopyDispose) |
| 126 | flags |= BLOCK_HAS_COPY_DISPOSE; |
| 127 | |
Mike Stump | 7d6dc4f | 2009-02-13 20:17:16 +0000 | [diff] [blame] | 128 | // __isa |
Mike Stump | 59c5b11 | 2009-02-13 19:29:27 +0000 | [diff] [blame] | 129 | C = CGM.getNSConcreteStackBlock(); |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 130 | if (!insideFunction || |
| 131 | (!BlockRefDeclList && !BlockByrefDeclList)) { |
Mike Stump | f99f1d0 | 2009-02-13 17:23:42 +0000 | [diff] [blame] | 132 | C = CGM.getNSConcreteGlobalBlock(); |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 133 | flags |= BLOCK_IS_GLOBAL; |
| 134 | } |
Mike Stump | 59c5b11 | 2009-02-13 19:29:27 +0000 | [diff] [blame] | 135 | const llvm::PointerType *PtrToInt8Ty |
| 136 | = llvm::PointerType::getUnqual(llvm::Type::Int8Ty); |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 137 | C = llvm::ConstantExpr::getBitCast(C, PtrToInt8Ty); |
| 138 | Elts.push_back(C); |
| 139 | |
| 140 | // __flags |
| 141 | const llvm::IntegerType *IntTy = cast<llvm::IntegerType>( |
| 142 | CGM.getTypes().ConvertType(CGM.getContext().IntTy)); |
| 143 | C = llvm::ConstantInt::get(IntTy, flags); |
| 144 | Elts.push_back(C); |
| 145 | |
| 146 | // __reserved |
| 147 | C = llvm::ConstantInt::get(IntTy, 0); |
| 148 | Elts.push_back(C); |
| 149 | |
Mike Stump | bd65cac | 2009-02-19 01:01:04 +0000 | [diff] [blame] | 150 | // __invoke |
Mike Stump | cb71722 | 2009-02-17 17:18:36 +0000 | [diff] [blame] | 151 | const char *Name = ""; |
Mike Stump | 67a6448 | 2009-02-14 22:16:35 +0000 | [diff] [blame] | 152 | if (const NamedDecl *ND = dyn_cast<NamedDecl>(CurFuncDecl)) |
Mike Stump | 1905061 | 2009-02-17 23:25:52 +0000 | [diff] [blame] | 153 | if (ND->getIdentifier()) |
| 154 | Name = ND->getNameAsCString(); |
Mike Stump | 67a6448 | 2009-02-14 22:16:35 +0000 | [diff] [blame] | 155 | BlockInfo Info(0, Name); |
Mike Stump | 8a2b4b1 | 2009-02-25 23:33:13 +0000 | [diff] [blame] | 156 | uint64_t subBlockSize, subBlockAlign; |
| 157 | llvm::SmallVector<ValueDecl *, 8> subBlockDeclRefDecls; |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 158 | llvm::Function *Fn |
Mike Stump | 8a2b4b1 | 2009-02-25 23:33:13 +0000 | [diff] [blame] | 159 | = CodeGenFunction(CGM).GenerateBlockFunction(BE, Info, subBlockSize, |
| 160 | subBlockAlign, subBlockDeclRefDecls); |
Mike Stump | 67a6448 | 2009-02-14 22:16:35 +0000 | [diff] [blame] | 161 | Elts.push_back(Fn); |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 162 | |
| 163 | // __descriptor |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 164 | Elts.push_back(BuildDescriptorBlockDecl(subBlockSize)); |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 165 | |
Mike Stump | 8a2b4b1 | 2009-02-25 23:33:13 +0000 | [diff] [blame] | 166 | // FIXME: Also check to make sure there are no byref variables |
| 167 | if (subBlockDeclRefDecls.size() == 0) { |
| 168 | C = llvm::ConstantStruct::get(Elts); |
| 169 | |
| 170 | char Name[32]; |
| 171 | sprintf(Name, "__block_holder_tmp_%d", CGM.getGlobalUniqueCount()); |
| 172 | C = new llvm::GlobalVariable(C->getType(), true, |
| 173 | llvm::GlobalValue::InternalLinkage, |
| 174 | C, Name, &CGM.getModule()); |
| 175 | QualType BPT = BE->getType(); |
| 176 | C = llvm::ConstantExpr::getBitCast(C, ConvertType(BPT)); |
| 177 | return C; |
| 178 | } |
| 179 | |
| 180 | std::vector<const llvm::Type *> Types(5+subBlockDeclRefDecls.size()); |
| 181 | for (int i=0; i<5; ++i) |
| 182 | Types[i] = Elts[i]->getType(); |
| 183 | |
| 184 | for (unsigned i=0; i < subBlockDeclRefDecls.size(); ++i) |
| 185 | Types[i+5] = ConvertType(subBlockDeclRefDecls[i]->getType()); |
| 186 | |
| 187 | llvm::Type *Ty = llvm::StructType::get(Types, true); |
| 188 | |
| 189 | llvm::AllocaInst *A = CreateTempAlloca(Ty); |
| 190 | A->setAlignment(subBlockAlign); |
| 191 | V = A; |
| 192 | |
| 193 | for (unsigned i=0; i<5; ++i) |
| 194 | Builder.CreateStore(Elts[i], Builder.CreateStructGEP(V, i, "block.tmp")); |
| 195 | |
| 196 | for (unsigned i=0; i < subBlockDeclRefDecls.size(); ++i) |
| 197 | { |
| 198 | ValueDecl *VD = subBlockDeclRefDecls[i]; |
| 199 | |
| 200 | if (VD->getIdentifier() == 0) |
| 201 | continue; |
| 202 | SourceLocation Loc = VD->getLocation(); |
| 203 | DeclRefExpr D(VD, VD->getType(), Loc); |
| 204 | llvm::Value* Addr = Builder.CreateStructGEP(V, i+5, "tmp"); |
| 205 | RValue r = EmitAnyExpr(&D, Addr, false); |
| 206 | if (r.isScalar()) |
| 207 | Builder.CreateStore(r.getScalarVal(), Addr); |
| 208 | else if (r.isComplex()) |
| 209 | // FIXME: implement |
| 210 | ErrorUnsupported(BE, "complex in block literal"); |
| 211 | else if (r.isAggregate()) |
| 212 | ; // Already created into the destination |
| 213 | else |
| 214 | assert (0 && "bad block variable"); |
| 215 | // FIXME: Ensure that the offset created by the backend for |
| 216 | // the struct matches the previously computed offset in BlockDecls. |
| 217 | } |
| 218 | |
| 219 | // FIXME: Add block_byref_decl_list. |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 220 | } |
| 221 | |
Mike Stump | bd65cac | 2009-02-19 01:01:04 +0000 | [diff] [blame] | 222 | QualType BPT = BE->getType(); |
Mike Stump | 8a2b4b1 | 2009-02-25 23:33:13 +0000 | [diff] [blame] | 223 | return Builder.CreateBitCast(V, ConvertType(BPT)); |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | |
Mike Stump | ab69514 | 2009-02-13 15:16:56 +0000 | [diff] [blame] | 227 | const llvm::Type *CodeGenModule::getBlockDescriptorType() { |
| 228 | if (BlockDescriptorType) |
| 229 | return BlockDescriptorType; |
| 230 | |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 231 | const llvm::Type *UnsignedLongTy = |
Mike Stump | ab69514 | 2009-02-13 15:16:56 +0000 | [diff] [blame] | 232 | getTypes().ConvertType(getContext().UnsignedLongTy); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 233 | |
Mike Stump | ab69514 | 2009-02-13 15:16:56 +0000 | [diff] [blame] | 234 | // struct __block_descriptor { |
| 235 | // unsigned long reserved; |
| 236 | // unsigned long block_size; |
| 237 | // }; |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 238 | BlockDescriptorType = llvm::StructType::get(UnsignedLongTy, |
| 239 | UnsignedLongTy, |
Mike Stump | ab69514 | 2009-02-13 15:16:56 +0000 | [diff] [blame] | 240 | NULL); |
| 241 | |
| 242 | getModule().addTypeName("struct.__block_descriptor", |
| 243 | BlockDescriptorType); |
| 244 | |
| 245 | return BlockDescriptorType; |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 246 | } |
| 247 | |
Mike Stump | 9b8a797 | 2009-02-13 15:25:34 +0000 | [diff] [blame] | 248 | const llvm::Type * |
| 249 | CodeGenModule::getGenericBlockLiteralType() { |
| 250 | if (GenericBlockLiteralType) |
| 251 | return GenericBlockLiteralType; |
| 252 | |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 253 | const llvm::Type *Int8PtrTy = |
Mike Stump | 9b8a797 | 2009-02-13 15:25:34 +0000 | [diff] [blame] | 254 | llvm::PointerType::getUnqual(llvm::Type::Int8Ty); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 255 | |
| 256 | const llvm::Type *BlockDescPtrTy = |
Mike Stump | 9b8a797 | 2009-02-13 15:25:34 +0000 | [diff] [blame] | 257 | llvm::PointerType::getUnqual(getBlockDescriptorType()); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 258 | |
Mike Stump | 7cbb360 | 2009-02-13 16:01:35 +0000 | [diff] [blame] | 259 | const llvm::IntegerType *IntTy = cast<llvm::IntegerType>( |
| 260 | getTypes().ConvertType(getContext().IntTy)); |
| 261 | |
Mike Stump | 9b8a797 | 2009-02-13 15:25:34 +0000 | [diff] [blame] | 262 | // struct __block_literal_generic { |
Mike Stump | bd65cac | 2009-02-19 01:01:04 +0000 | [diff] [blame] | 263 | // void *__isa; |
| 264 | // int __flags; |
| 265 | // int __reserved; |
| 266 | // void (*__invoke)(void *); |
| 267 | // struct __block_descriptor *__descriptor; |
Mike Stump | 9b8a797 | 2009-02-13 15:25:34 +0000 | [diff] [blame] | 268 | // }; |
| 269 | GenericBlockLiteralType = llvm::StructType::get(Int8PtrTy, |
Mike Stump | 7cbb360 | 2009-02-13 16:01:35 +0000 | [diff] [blame] | 270 | IntTy, |
| 271 | IntTy, |
Mike Stump | 9b8a797 | 2009-02-13 15:25:34 +0000 | [diff] [blame] | 272 | Int8PtrTy, |
| 273 | BlockDescPtrTy, |
| 274 | NULL); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 275 | |
Mike Stump | 9b8a797 | 2009-02-13 15:25:34 +0000 | [diff] [blame] | 276 | getModule().addTypeName("struct.__block_literal_generic", |
| 277 | GenericBlockLiteralType); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 278 | |
Mike Stump | 9b8a797 | 2009-02-13 15:25:34 +0000 | [diff] [blame] | 279 | return GenericBlockLiteralType; |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 280 | } |
| 281 | |
Mike Stump | bd65cac | 2009-02-19 01:01:04 +0000 | [diff] [blame] | 282 | const llvm::Type * |
| 283 | CodeGenModule::getGenericExtendedBlockLiteralType() { |
| 284 | if (GenericExtendedBlockLiteralType) |
| 285 | return GenericExtendedBlockLiteralType; |
| 286 | |
| 287 | const llvm::Type *Int8PtrTy = |
| 288 | llvm::PointerType::getUnqual(llvm::Type::Int8Ty); |
| 289 | |
| 290 | const llvm::Type *BlockDescPtrTy = |
| 291 | llvm::PointerType::getUnqual(getBlockDescriptorType()); |
| 292 | |
| 293 | const llvm::IntegerType *IntTy = cast<llvm::IntegerType>( |
| 294 | getTypes().ConvertType(getContext().IntTy)); |
| 295 | |
| 296 | // struct __block_literal_generic { |
| 297 | // void *__isa; |
| 298 | // int __flags; |
| 299 | // int __reserved; |
| 300 | // void (*__invoke)(void *); |
| 301 | // struct __block_descriptor *__descriptor; |
| 302 | // void *__copy_func_helper_decl; |
| 303 | // void *__destroy_func_decl; |
| 304 | // }; |
| 305 | GenericExtendedBlockLiteralType = llvm::StructType::get(Int8PtrTy, |
| 306 | IntTy, |
| 307 | IntTy, |
| 308 | Int8PtrTy, |
| 309 | BlockDescPtrTy, |
| 310 | Int8PtrTy, |
| 311 | Int8PtrTy, |
| 312 | NULL); |
| 313 | |
| 314 | getModule().addTypeName("struct.__block_literal_extended_generic", |
| 315 | GenericExtendedBlockLiteralType); |
| 316 | |
| 317 | return GenericExtendedBlockLiteralType; |
| 318 | } |
| 319 | |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 320 | /// getBlockFunctionType - Given a BlockPointerType, will return the |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 321 | /// function type for the block, including the first block literal argument. |
| 322 | static QualType getBlockFunctionType(ASTContext &Ctx, |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 323 | const BlockPointerType *BPT) { |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 324 | const FunctionProtoType *FTy = cast<FunctionProtoType>(BPT->getPointeeType()); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 325 | |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 326 | llvm::SmallVector<QualType, 8> Types; |
| 327 | Types.push_back(Ctx.getPointerType(Ctx.VoidTy)); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 328 | |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 329 | for (FunctionProtoType::arg_type_iterator i = FTy->arg_type_begin(), |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 330 | e = FTy->arg_type_end(); i != e; ++i) |
| 331 | Types.push_back(*i); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 332 | |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 333 | return Ctx.getFunctionType(FTy->getResultType(), |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 334 | &Types[0], Types.size(), |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 335 | FTy->isVariadic(), 0); |
| 336 | } |
| 337 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 338 | RValue CodeGenFunction::EmitBlockCallExpr(const CallExpr* E) { |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 339 | const BlockPointerType *BPT = |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 340 | E->getCallee()->getType()->getAsBlockPointerType(); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 341 | |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 342 | llvm::Value *Callee = EmitScalarExpr(E->getCallee()); |
| 343 | |
| 344 | // Get a pointer to the generic block literal. |
| 345 | const llvm::Type *BlockLiteralTy = |
Mike Stump | 9b8a797 | 2009-02-13 15:25:34 +0000 | [diff] [blame] | 346 | llvm::PointerType::getUnqual(CGM.getGenericBlockLiteralType()); |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 347 | |
| 348 | // Bitcast the callee to a block literal. |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 349 | llvm::Value *BlockLiteral = |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 350 | Builder.CreateBitCast(Callee, BlockLiteralTy, "block.literal"); |
| 351 | |
| 352 | // Get the function pointer from the literal. |
| 353 | llvm::Value *FuncPtr = Builder.CreateStructGEP(BlockLiteral, 3, "tmp"); |
Mike Stump | 20733cd | 2009-02-22 13:27:11 +0000 | [diff] [blame] | 354 | llvm::Value *Func = Builder.CreateLoad(FuncPtr, false, "tmp"); |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 355 | |
| 356 | // Cast the function pointer to the right type. |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 357 | const llvm::Type *BlockFTy = |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 358 | ConvertType(getBlockFunctionType(getContext(), BPT)); |
| 359 | const llvm::Type *BlockFTyPtr = llvm::PointerType::getUnqual(BlockFTy); |
| 360 | Func = Builder.CreateBitCast(Func, BlockFTyPtr); |
| 361 | |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 362 | BlockLiteral = |
| 363 | Builder.CreateBitCast(BlockLiteral, |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 364 | llvm::PointerType::getUnqual(llvm::Type::Int8Ty), |
| 365 | "tmp"); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 366 | |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 367 | // Add the block literal. |
| 368 | QualType VoidPtrTy = getContext().getPointerType(getContext().VoidTy); |
| 369 | CallArgList Args; |
| 370 | Args.push_back(std::make_pair(RValue::get(BlockLiteral), VoidPtrTy)); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 371 | |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 372 | // And the rest of the arguments. |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 373 | for (CallExpr::const_arg_iterator i = E->arg_begin(), e = E->arg_end(); |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 374 | i != e; ++i) |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 375 | Args.push_back(std::make_pair(EmitAnyExprToTemp(*i), |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 376 | i->getType())); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 377 | |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 378 | // And call the block. |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 379 | return EmitCall(CGM.getTypes().getFunctionInfo(E->getType(), Args), |
Anders Carlsson | acfde80 | 2009-02-12 00:39:25 +0000 | [diff] [blame] | 380 | Func, Args); |
| 381 | } |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 382 | |
Mike Stump | 67a6448 | 2009-02-14 22:16:35 +0000 | [diff] [blame] | 383 | llvm::Constant * |
Mike Stump | 30395dd | 2009-02-14 22:49:33 +0000 | [diff] [blame] | 384 | CodeGenModule::GetAddrOfGlobalBlock(const BlockExpr *BE, const char * n) { |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 385 | // Generate the block descriptor. |
| 386 | const llvm::Type *UnsignedLongTy = Types.ConvertType(Context.UnsignedLongTy); |
Mike Stump | 7cbb360 | 2009-02-13 16:01:35 +0000 | [diff] [blame] | 387 | const llvm::IntegerType *IntTy = cast<llvm::IntegerType>( |
| 388 | getTypes().ConvertType(getContext().IntTy)); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 389 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 390 | llvm::Constant *DescriptorFields[2]; |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 391 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 392 | // Reserved |
| 393 | DescriptorFields[0] = llvm::Constant::getNullValue(UnsignedLongTy); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 394 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 395 | // Block literal size. For global blocks we just use the size of the generic |
| 396 | // block literal struct. |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 397 | uint64_t BlockLiteralSize = |
Mike Stump | 9b8a797 | 2009-02-13 15:25:34 +0000 | [diff] [blame] | 398 | TheTargetData.getTypeStoreSizeInBits(getGenericBlockLiteralType()) / 8; |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 399 | DescriptorFields[1] = llvm::ConstantInt::get(UnsignedLongTy,BlockLiteralSize); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 400 | |
| 401 | llvm::Constant *DescriptorStruct = |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 402 | llvm::ConstantStruct::get(&DescriptorFields[0], 2); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 403 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 404 | llvm::GlobalVariable *Descriptor = |
| 405 | new llvm::GlobalVariable(DescriptorStruct->getType(), true, |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 406 | llvm::GlobalVariable::InternalLinkage, |
| 407 | DescriptorStruct, "__block_descriptor_global", |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 408 | &getModule()); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 409 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 410 | // Generate the constants for the block literal. |
| 411 | llvm::Constant *LiteralFields[5]; |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 412 | |
Mike Stump | 67a6448 | 2009-02-14 22:16:35 +0000 | [diff] [blame] | 413 | CodeGenFunction::BlockInfo Info(0, n); |
Mike Stump | 8a2b4b1 | 2009-02-25 23:33:13 +0000 | [diff] [blame] | 414 | uint64_t subBlockSize, subBlockAlign; |
| 415 | llvm::SmallVector<ValueDecl *, 8> subBlockDeclRefDecls; |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 416 | llvm::Function *Fn |
Mike Stump | 8a2b4b1 | 2009-02-25 23:33:13 +0000 | [diff] [blame] | 417 | = CodeGenFunction(*this).GenerateBlockFunction(BE, Info, subBlockSize, |
| 418 | subBlockAlign, |
| 419 | subBlockDeclRefDecls); |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 420 | assert(subBlockSize == BlockLiteralSize |
| 421 | && "no imports allowed for global block"); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 422 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 423 | // isa |
Mike Stump | f99f1d0 | 2009-02-13 17:23:42 +0000 | [diff] [blame] | 424 | LiteralFields[0] = getNSConcreteGlobalBlock(); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 425 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 426 | // Flags |
Mike Stump | e5fee25 | 2009-02-13 16:19:19 +0000 | [diff] [blame] | 427 | LiteralFields[1] = llvm::ConstantInt::get(IntTy, BLOCK_IS_GLOBAL); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 428 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 429 | // Reserved |
Mike Stump | 7cbb360 | 2009-02-13 16:01:35 +0000 | [diff] [blame] | 430 | LiteralFields[2] = llvm::Constant::getNullValue(IntTy); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 431 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 432 | // Function |
| 433 | LiteralFields[3] = Fn; |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 434 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 435 | // Descriptor |
| 436 | LiteralFields[4] = Descriptor; |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 437 | |
| 438 | llvm::Constant *BlockLiteralStruct = |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 439 | llvm::ConstantStruct::get(&LiteralFields[0], 5); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 440 | |
| 441 | llvm::GlobalVariable *BlockLiteral = |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 442 | new llvm::GlobalVariable(BlockLiteralStruct->getType(), true, |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 443 | llvm::GlobalVariable::InternalLinkage, |
| 444 | BlockLiteralStruct, "__block_literal_global", |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 445 | &getModule()); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 446 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 447 | return BlockLiteral; |
| 448 | } |
| 449 | |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 450 | llvm::Value *CodeGenFunction::LoadBlockStruct() { |
| 451 | return Builder.CreateLoad(LocalDeclMap[getBlockStructDecl()], "self"); |
| 452 | } |
| 453 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 454 | llvm::Function *CodeGenFunction::GenerateBlockFunction(const BlockExpr *Expr, |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 455 | const BlockInfo& Info, |
Mike Stump | 8a2b4b1 | 2009-02-25 23:33:13 +0000 | [diff] [blame] | 456 | uint64_t &Size, |
| 457 | uint64_t &Align, |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 458 | llvm::SmallVector<ValueDecl *, 8> &subBlockDeclRefDecls) { |
| 459 | const FunctionProtoType *FTy = |
| 460 | cast<FunctionProtoType>(Expr->getFunctionType()); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 461 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 462 | FunctionArgList Args; |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 463 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 464 | const BlockDecl *BD = Expr->getBlockDecl(); |
| 465 | |
| 466 | // FIXME: This leaks |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 467 | ImplicitParamDecl *SelfDecl = |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 468 | ImplicitParamDecl::Create(getContext(), 0, |
| 469 | SourceLocation(), 0, |
| 470 | getContext().getPointerType(getContext().VoidTy)); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 471 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 472 | Args.push_back(std::make_pair(SelfDecl, SelfDecl->getType())); |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 473 | BlockStructDecl = SelfDecl; |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 474 | |
| 475 | for (BlockDecl::param_iterator i = BD->param_begin(), |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 476 | e = BD->param_end(); i != e; ++i) |
Mike Stump | 1905061 | 2009-02-17 23:25:52 +0000 | [diff] [blame] | 477 | Args.push_back(std::make_pair(*i, (*i)->getType())); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 478 | |
| 479 | const CGFunctionInfo &FI = |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 480 | CGM.getTypes().getFunctionInfo(FTy->getResultType(), Args); |
| 481 | |
Mike Stump | 67a6448 | 2009-02-14 22:16:35 +0000 | [diff] [blame] | 482 | std::string Name = std::string("__") + Info.Name + "_block_invoke_"; |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 483 | CodeGenTypes &Types = CGM.getTypes(); |
| 484 | const llvm::FunctionType *LTy = Types.GetFunctionType(FI, FTy->isVariadic()); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 485 | |
| 486 | llvm::Function *Fn = |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 487 | llvm::Function::Create(LTy, llvm::GlobalValue::InternalLinkage, |
| 488 | Name, |
| 489 | &CGM.getModule()); |
Mike Stump | a544854 | 2009-02-13 15:32:32 +0000 | [diff] [blame] | 490 | |
| 491 | StartFunction(BD, FTy->getResultType(), Fn, Args, |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 492 | Expr->getBody()->getLocEnd()); |
| 493 | EmitStmt(Expr->getBody()); |
| 494 | FinishFunction(cast<CompoundStmt>(Expr->getBody())->getRBracLoc()); |
| 495 | |
Mike Stump | 8a2b4b1 | 2009-02-25 23:33:13 +0000 | [diff] [blame] | 496 | // The runtime needs a minimum alignment of a void *. |
| 497 | uint64_t MinAlign = getContext().getTypeAlign(getContext().VoidPtrTy) / 8; |
| 498 | BlockOffset = llvm::RoundUpToAlignment(BlockOffset, MinAlign); |
| 499 | |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 500 | Size = BlockOffset; |
Mike Stump | 8a2b4b1 | 2009-02-25 23:33:13 +0000 | [diff] [blame] | 501 | Align = BlockAlign; |
| 502 | subBlockDeclRefDecls = BlockDeclRefDecls; |
Mike Stump | 4e7a1f7 | 2009-02-21 20:00:35 +0000 | [diff] [blame] | 503 | |
Anders Carlsson | d5cab54 | 2009-02-12 17:55:02 +0000 | [diff] [blame] | 504 | return Fn; |
| 505 | } |