Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1 | //===--- CGExpr.cpp - Emit LLVM Code from Expressions ---------------------===// |
| 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 Expr nodes as LLVM code. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "CodeGenFunction.h" |
| 15 | #include "CodeGenModule.h" |
Daniel Dunbar | 0dbe227 | 2008-09-08 21:33:45 +0000 | [diff] [blame] | 16 | #include "CGCall.h" |
Daniel Dunbar | af2f62c | 2008-08-13 00:59:25 +0000 | [diff] [blame] | 17 | #include "CGObjCRuntime.h" |
Daniel Dunbar | de7fb84 | 2008-08-11 05:00:27 +0000 | [diff] [blame] | 18 | #include "clang/AST/ASTContext.h" |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 19 | #include "clang/AST/DeclObjC.h" |
Mike Stump | 15037ca | 2009-12-15 00:35:12 +0000 | [diff] [blame] | 20 | #include "llvm/Intrinsics.h" |
Mike Stump | 4151344 | 2009-12-15 00:59:40 +0000 | [diff] [blame] | 21 | #include "clang/CodeGen/CodeGenOptions.h" |
Eli Friedman | 316bb1b | 2008-05-17 20:03:47 +0000 | [diff] [blame] | 22 | #include "llvm/Target/TargetData.h" |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 23 | using namespace clang; |
| 24 | using namespace CodeGen; |
| 25 | |
| 26 | //===--------------------------------------------------------------------===// |
| 27 | // Miscellaneous Helper Methods |
| 28 | //===--------------------------------------------------------------------===// |
| 29 | |
| 30 | /// CreateTempAlloca - This creates a alloca and inserts it into the entry |
| 31 | /// block. |
| 32 | llvm::AllocaInst *CodeGenFunction::CreateTempAlloca(const llvm::Type *Ty, |
Daniel Dunbar | 259e9cc | 2009-10-19 01:21:05 +0000 | [diff] [blame] | 33 | const llvm::Twine &Name) { |
Chris Lattner | f146684 | 2009-03-22 00:24:14 +0000 | [diff] [blame] | 34 | if (!Builder.isNamePreserving()) |
Daniel Dunbar | 259e9cc | 2009-10-19 01:21:05 +0000 | [diff] [blame] | 35 | return new llvm::AllocaInst(Ty, 0, "", AllocaInsertPt); |
Devang Patel | d35e2e0 | 2009-10-12 22:29:02 +0000 | [diff] [blame] | 36 | return new llvm::AllocaInst(Ty, 0, Name, AllocaInsertPt); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 37 | } |
| 38 | |
| 39 | /// EvaluateExprAsBool - Perform the usual unary conversions on the specified |
| 40 | /// expression and compare the result against zero, returning an Int1Ty value. |
| 41 | llvm::Value *CodeGenFunction::EvaluateExprAsBool(const Expr *E) { |
Chris Lattner | 9069fa2 | 2007-08-26 16:46:58 +0000 | [diff] [blame] | 42 | QualType BoolTy = getContext().BoolTy; |
Eli Friedman | 3a17370 | 2009-12-11 09:26:29 +0000 | [diff] [blame] | 43 | if (E->getType()->isMemberFunctionPointerType()) { |
| 44 | llvm::Value *Ptr = CreateTempAlloca(ConvertType(E->getType())); |
| 45 | EmitAggExpr(E, Ptr, /*VolatileDest=*/false); |
| 46 | |
| 47 | // Get the pointer. |
| 48 | llvm::Value *FuncPtr = Builder.CreateStructGEP(Ptr, 0, "src.ptr"); |
| 49 | FuncPtr = Builder.CreateLoad(FuncPtr); |
| 50 | |
| 51 | llvm::Value *IsNotNull = |
| 52 | Builder.CreateICmpNE(FuncPtr, |
| 53 | llvm::Constant::getNullValue(FuncPtr->getType()), |
| 54 | "tobool"); |
| 55 | |
| 56 | return IsNotNull; |
| 57 | } |
Chris Lattner | 9b2dc28 | 2008-04-04 16:54:41 +0000 | [diff] [blame] | 58 | if (!E->getType()->isAnyComplexType()) |
Chris Lattner | 9069fa2 | 2007-08-26 16:46:58 +0000 | [diff] [blame] | 59 | return EmitScalarConversion(EmitScalarExpr(E), E->getType(), BoolTy); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 60 | |
Chris Lattner | 9069fa2 | 2007-08-26 16:46:58 +0000 | [diff] [blame] | 61 | return EmitComplexToScalarConversion(EmitComplexExpr(E), E->getType(),BoolTy); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 62 | } |
| 63 | |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 64 | /// EmitAnyExpr - Emit code to compute the specified expression which can have |
| 65 | /// any type. The result is returned as an RValue struct. If this is an |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 66 | /// aggregate expression, the aggloc/agglocvolatile arguments indicate where the |
| 67 | /// result should be returned. |
| 68 | RValue CodeGenFunction::EmitAnyExpr(const Expr *E, llvm::Value *AggLoc, |
Anders Carlsson | 14c5cbf | 2009-08-16 07:36:22 +0000 | [diff] [blame] | 69 | bool IsAggLocVolatile, bool IgnoreResult, |
| 70 | bool IsInitializer) { |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 71 | if (!hasAggregateLLVMType(E->getType())) |
Mike Stump | 7f79f9b | 2009-05-29 15:46:01 +0000 | [diff] [blame] | 72 | return RValue::get(EmitScalarExpr(E, IgnoreResult)); |
Chris Lattner | 9b2dc28 | 2008-04-04 16:54:41 +0000 | [diff] [blame] | 73 | else if (E->getType()->isAnyComplexType()) |
Mike Stump | 7f79f9b | 2009-05-29 15:46:01 +0000 | [diff] [blame] | 74 | return RValue::getComplex(EmitComplexExpr(E, false, false, |
| 75 | IgnoreResult, IgnoreResult)); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 76 | |
Anders Carlsson | 14c5cbf | 2009-08-16 07:36:22 +0000 | [diff] [blame] | 77 | EmitAggExpr(E, AggLoc, IsAggLocVolatile, IgnoreResult, IsInitializer); |
| 78 | return RValue::getAggregate(AggLoc, IsAggLocVolatile); |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 79 | } |
| 80 | |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 81 | /// EmitAnyExprToTemp - Similary to EmitAnyExpr(), however, the result will |
| 82 | /// always be accessible even if no aggregate location is provided. |
| 83 | RValue CodeGenFunction::EmitAnyExprToTemp(const Expr *E, |
Anders Carlsson | 14c5cbf | 2009-08-16 07:36:22 +0000 | [diff] [blame] | 84 | bool IsAggLocVolatile, |
| 85 | bool IsInitializer) { |
| 86 | llvm::Value *AggLoc = 0; |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 87 | |
| 88 | if (hasAggregateLLVMType(E->getType()) && |
Daniel Dunbar | 46f45b9 | 2008-09-09 01:06:48 +0000 | [diff] [blame] | 89 | !E->getType()->isAnyComplexType()) |
| 90 | AggLoc = CreateTempAlloca(ConvertType(E->getType()), "agg.tmp"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 91 | return EmitAnyExpr(E, AggLoc, IsAggLocVolatile, /*IgnoreResult=*/false, |
Anders Carlsson | 14c5cbf | 2009-08-16 07:36:22 +0000 | [diff] [blame] | 92 | IsInitializer); |
Daniel Dunbar | 46f45b9 | 2008-09-09 01:06:48 +0000 | [diff] [blame] | 93 | } |
| 94 | |
Anders Carlsson | 4029ca7 | 2009-05-20 00:24:07 +0000 | [diff] [blame] | 95 | RValue CodeGenFunction::EmitReferenceBindingToExpr(const Expr* E, |
Anders Carlsson | 14c5cbf | 2009-08-16 07:36:22 +0000 | [diff] [blame] | 96 | bool IsInitializer) { |
Anders Carlsson | e1b7ea1 | 2009-10-18 23:09:21 +0000 | [diff] [blame] | 97 | bool ShouldDestroyTemporaries = false; |
| 98 | unsigned OldNumLiveTemporaries = 0; |
Eli Friedman | 27a9b72 | 2009-12-19 00:20:10 +0000 | [diff] [blame] | 99 | |
| 100 | if (const CXXDefaultArgExpr *DAE = dyn_cast<CXXDefaultArgExpr>(E)) |
| 101 | E = DAE->getExpr(); |
| 102 | |
Anders Carlsson | b3f7442 | 2009-10-15 00:51:46 +0000 | [diff] [blame] | 103 | if (const CXXExprWithTemporaries *TE = dyn_cast<CXXExprWithTemporaries>(E)) { |
Anders Carlsson | 0ece491 | 2009-12-15 20:51:39 +0000 | [diff] [blame] | 104 | ShouldDestroyTemporaries = true; |
| 105 | |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 106 | // Keep track of the current cleanup stack depth. |
Anders Carlsson | 0ece491 | 2009-12-15 20:51:39 +0000 | [diff] [blame] | 107 | OldNumLiveTemporaries = LiveTemporaries.size(); |
Anders Carlsson | b3f7442 | 2009-10-15 00:51:46 +0000 | [diff] [blame] | 108 | |
Anders Carlsson | e1b7ea1 | 2009-10-18 23:09:21 +0000 | [diff] [blame] | 109 | E = TE->getSubExpr(); |
Anders Carlsson | b3f7442 | 2009-10-15 00:51:46 +0000 | [diff] [blame] | 110 | } |
| 111 | |
Eli Friedman | 5df0d42 | 2009-05-20 02:31:19 +0000 | [diff] [blame] | 112 | RValue Val; |
| 113 | if (E->isLvalue(getContext()) == Expr::LV_Valid) { |
Anders Carlsson | 4bbab92 | 2009-05-20 00:36:58 +0000 | [diff] [blame] | 114 | // Emit the expr as an lvalue. |
| 115 | LValue LV = EmitLValue(E); |
Anders Carlsson | 0dc7366 | 2010-02-04 17:32:58 +0000 | [diff] [blame^] | 116 | if (LV.isSimple()) { |
| 117 | if (ShouldDestroyTemporaries) { |
| 118 | // Pop temporaries. |
| 119 | while (LiveTemporaries.size() > OldNumLiveTemporaries) |
| 120 | PopCXXTemporary(); |
| 121 | } |
| 122 | |
Eli Friedman | 5df0d42 | 2009-05-20 02:31:19 +0000 | [diff] [blame] | 123 | return RValue::get(LV.getAddress()); |
Anders Carlsson | 0dc7366 | 2010-02-04 17:32:58 +0000 | [diff] [blame^] | 124 | } |
| 125 | |
Eli Friedman | 5df0d42 | 2009-05-20 02:31:19 +0000 | [diff] [blame] | 126 | Val = EmitLoadOfLValue(LV, E->getType()); |
Anders Carlsson | e1b7ea1 | 2009-10-18 23:09:21 +0000 | [diff] [blame] | 127 | |
| 128 | if (ShouldDestroyTemporaries) { |
| 129 | // Pop temporaries. |
| 130 | while (LiveTemporaries.size() > OldNumLiveTemporaries) |
| 131 | PopCXXTemporary(); |
| 132 | } |
Eli Friedman | 5df0d42 | 2009-05-20 02:31:19 +0000 | [diff] [blame] | 133 | } else { |
Anders Carlsson | b3f7442 | 2009-10-15 00:51:46 +0000 | [diff] [blame] | 134 | const CXXRecordDecl *BaseClassDecl = 0; |
| 135 | const CXXRecordDecl *DerivedClassDecl = 0; |
| 136 | |
| 137 | if (const CastExpr *CE = |
| 138 | dyn_cast<CastExpr>(E->IgnoreParenNoopCasts(getContext()))) { |
| 139 | if (CE->getCastKind() == CastExpr::CK_DerivedToBase) { |
| 140 | E = CE->getSubExpr(); |
| 141 | |
| 142 | BaseClassDecl = |
| 143 | cast<CXXRecordDecl>(CE->getType()->getAs<RecordType>()->getDecl()); |
| 144 | DerivedClassDecl = |
| 145 | cast<CXXRecordDecl>(E->getType()->getAs<RecordType>()->getDecl()); |
| 146 | } |
| 147 | } |
| 148 | |
Anders Carlsson | 14c5cbf | 2009-08-16 07:36:22 +0000 | [diff] [blame] | 149 | Val = EmitAnyExprToTemp(E, /*IsAggLocVolatile=*/false, |
| 150 | IsInitializer); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 151 | |
Anders Carlsson | e1b7ea1 | 2009-10-18 23:09:21 +0000 | [diff] [blame] | 152 | if (ShouldDestroyTemporaries) { |
| 153 | // Pop temporaries. |
| 154 | while (LiveTemporaries.size() > OldNumLiveTemporaries) |
| 155 | PopCXXTemporary(); |
| 156 | } |
| 157 | |
Anders Carlsson | 2da7693 | 2009-08-16 17:54:29 +0000 | [diff] [blame] | 158 | if (IsInitializer) { |
| 159 | // We might have to destroy the temporary variable. |
| 160 | if (const RecordType *RT = E->getType()->getAs<RecordType>()) { |
| 161 | if (CXXRecordDecl *ClassDecl = dyn_cast<CXXRecordDecl>(RT->getDecl())) { |
| 162 | if (!ClassDecl->hasTrivialDestructor()) { |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 163 | const CXXDestructorDecl *Dtor = |
Anders Carlsson | 2da7693 | 2009-08-16 17:54:29 +0000 | [diff] [blame] | 164 | ClassDecl->getDestructor(getContext()); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 165 | |
Mike Stump | d88ea56 | 2009-12-09 03:35:49 +0000 | [diff] [blame] | 166 | { |
Anders Carlsson | 6ec687d | 2009-12-11 01:00:09 +0000 | [diff] [blame] | 167 | DelayedCleanupBlock Scope(*this); |
Mike Stump | d88ea56 | 2009-12-09 03:35:49 +0000 | [diff] [blame] | 168 | EmitCXXDestructorCall(Dtor, Dtor_Complete, |
| 169 | Val.getAggregateAddr()); |
Anders Carlsson | 6ec687d | 2009-12-11 01:00:09 +0000 | [diff] [blame] | 170 | |
| 171 | // Make sure to jump to the exit block. |
| 172 | EmitBranch(Scope.getCleanupExitBlock()); |
Mike Stump | d88ea56 | 2009-12-09 03:35:49 +0000 | [diff] [blame] | 173 | } |
| 174 | if (Exceptions) { |
| 175 | EHCleanupBlock Cleanup(*this); |
| 176 | EmitCXXDestructorCall(Dtor, Dtor_Complete, |
| 177 | Val.getAggregateAddr()); |
| 178 | } |
Anders Carlsson | 2da7693 | 2009-08-16 17:54:29 +0000 | [diff] [blame] | 179 | } |
Anders Carlsson | 8478ce6 | 2009-08-16 17:50:25 +0000 | [diff] [blame] | 180 | } |
| 181 | } |
| 182 | } |
Anders Carlsson | b3f7442 | 2009-10-15 00:51:46 +0000 | [diff] [blame] | 183 | |
| 184 | // Check if need to perform the derived-to-base cast. |
| 185 | if (BaseClassDecl) { |
| 186 | llvm::Value *Derived = Val.getAggregateAddr(); |
Anders Carlsson | b3f7442 | 2009-10-15 00:51:46 +0000 | [diff] [blame] | 187 | llvm::Value *Base = |
Anders Carlsson | a3697c9 | 2009-11-23 17:57:54 +0000 | [diff] [blame] | 188 | GetAddressOfBaseClass(Derived, DerivedClassDecl, BaseClassDecl, |
| 189 | /*NullCheckValue=*/false); |
Anders Carlsson | b3f7442 | 2009-10-15 00:51:46 +0000 | [diff] [blame] | 190 | return RValue::get(Base); |
| 191 | } |
Anders Carlsson | 4bbab92 | 2009-05-20 00:36:58 +0000 | [diff] [blame] | 192 | } |
Eli Friedman | 5df0d42 | 2009-05-20 02:31:19 +0000 | [diff] [blame] | 193 | |
| 194 | if (Val.isAggregate()) { |
| 195 | Val = RValue::get(Val.getAggregateAddr()); |
| 196 | } else { |
Anders Carlsson | 7cd3a64 | 2009-05-20 01:35:03 +0000 | [diff] [blame] | 197 | // Create a temporary variable that we can bind the reference to. |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 198 | llvm::Value *Temp = CreateTempAlloca(ConvertTypeForMem(E->getType()), |
Anders Carlsson | e04d1c7 | 2009-05-20 01:03:17 +0000 | [diff] [blame] | 199 | "reftmp"); |
Eli Friedman | 5df0d42 | 2009-05-20 02:31:19 +0000 | [diff] [blame] | 200 | if (Val.isScalar()) |
| 201 | EmitStoreOfScalar(Val.getScalarVal(), Temp, false, E->getType()); |
| 202 | else |
| 203 | StoreComplexToAddr(Val.getComplexVal(), Temp, false); |
| 204 | Val = RValue::get(Temp); |
Anders Carlsson | e04d1c7 | 2009-05-20 01:03:17 +0000 | [diff] [blame] | 205 | } |
Eli Friedman | 5df0d42 | 2009-05-20 02:31:19 +0000 | [diff] [blame] | 206 | |
| 207 | return Val; |
Anders Carlsson | 4029ca7 | 2009-05-20 00:24:07 +0000 | [diff] [blame] | 208 | } |
| 209 | |
| 210 | |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 211 | /// getAccessedFieldNo - Given an encoded value and a result number, return the |
| 212 | /// input field number being accessed. |
| 213 | unsigned CodeGenFunction::getAccessedFieldNo(unsigned Idx, |
Dan Gohman | 4f8d123 | 2008-05-22 00:50:06 +0000 | [diff] [blame] | 214 | const llvm::Constant *Elts) { |
| 215 | if (isa<llvm::ConstantAggregateZero>(Elts)) |
| 216 | return 0; |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 217 | |
Dan Gohman | 4f8d123 | 2008-05-22 00:50:06 +0000 | [diff] [blame] | 218 | return cast<llvm::ConstantInt>(Elts->getOperand(Idx))->getZExtValue(); |
| 219 | } |
| 220 | |
Mike Stump | b14e62d | 2009-12-16 02:57:00 +0000 | [diff] [blame] | 221 | void CodeGenFunction::EmitCheck(llvm::Value *Address, unsigned Size) { |
| 222 | if (!CatchUndefined) |
| 223 | return; |
| 224 | |
| 225 | const llvm::IntegerType *Size_tTy |
| 226 | = llvm::IntegerType::get(VMContext, LLVMPointerWidth); |
| 227 | Address = Builder.CreateBitCast(Address, PtrToInt8Ty); |
| 228 | |
| 229 | const llvm::Type *ResType[] = { |
| 230 | Size_tTy |
| 231 | }; |
| 232 | llvm::Value *F = CGM.getIntrinsic(llvm::Intrinsic::objectsize, ResType, 1); |
| 233 | const llvm::IntegerType *IntTy = cast<llvm::IntegerType>( |
| 234 | CGM.getTypes().ConvertType(CGM.getContext().IntTy)); |
| 235 | // In time, people may want to control this and use a 1 here. |
| 236 | llvm::Value *Arg = llvm::ConstantInt::get(IntTy, 0); |
| 237 | llvm::Value *C = Builder.CreateCall2(F, Address, Arg); |
| 238 | llvm::BasicBlock *Cont = createBasicBlock(); |
| 239 | llvm::BasicBlock *Check = createBasicBlock(); |
| 240 | llvm::Value *NegativeOne = llvm::ConstantInt::get(Size_tTy, -1ULL); |
| 241 | Builder.CreateCondBr(Builder.CreateICmpEQ(C, NegativeOne), Cont, Check); |
| 242 | |
| 243 | EmitBlock(Check); |
| 244 | Builder.CreateCondBr(Builder.CreateICmpUGE(C, |
| 245 | llvm::ConstantInt::get(Size_tTy, Size)), |
| 246 | Cont, getTrapBB()); |
| 247 | EmitBlock(Cont); |
| 248 | } |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 249 | |
Chris Lattner | dd36d32 | 2010-01-09 21:40:03 +0000 | [diff] [blame] | 250 | |
| 251 | llvm::Value *CodeGenFunction:: |
| 252 | EmitScalarPrePostIncDec(const UnaryOperator *E, LValue LV, |
| 253 | bool isInc, bool isPre) { |
| 254 | QualType ValTy = E->getSubExpr()->getType(); |
| 255 | llvm::Value *InVal = EmitLoadOfLValue(LV, ValTy).getScalarVal(); |
| 256 | |
| 257 | int AmountVal = isInc ? 1 : -1; |
| 258 | |
| 259 | if (ValTy->isPointerType() && |
| 260 | ValTy->getAs<PointerType>()->isVariableArrayType()) { |
| 261 | // The amount of the addition/subtraction needs to account for the VLA size |
| 262 | ErrorUnsupported(E, "VLA pointer inc/dec"); |
| 263 | } |
| 264 | |
| 265 | llvm::Value *NextVal; |
| 266 | if (const llvm::PointerType *PT = |
| 267 | dyn_cast<llvm::PointerType>(InVal->getType())) { |
| 268 | llvm::Constant *Inc = |
| 269 | llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), AmountVal); |
| 270 | if (!isa<llvm::FunctionType>(PT->getElementType())) { |
| 271 | QualType PTEE = ValTy->getPointeeType(); |
| 272 | if (const ObjCInterfaceType *OIT = |
| 273 | dyn_cast<ObjCInterfaceType>(PTEE)) { |
| 274 | // Handle interface types, which are not represented with a concrete |
| 275 | // type. |
| 276 | int size = getContext().getTypeSize(OIT) / 8; |
| 277 | if (!isInc) |
| 278 | size = -size; |
| 279 | Inc = llvm::ConstantInt::get(Inc->getType(), size); |
| 280 | const llvm::Type *i8Ty = llvm::Type::getInt8PtrTy(VMContext); |
| 281 | InVal = Builder.CreateBitCast(InVal, i8Ty); |
| 282 | NextVal = Builder.CreateGEP(InVal, Inc, "add.ptr"); |
| 283 | llvm::Value *lhs = LV.getAddress(); |
| 284 | lhs = Builder.CreateBitCast(lhs, llvm::PointerType::getUnqual(i8Ty)); |
| 285 | LV = LValue::MakeAddr(lhs, MakeQualifiers(ValTy)); |
| 286 | } else |
| 287 | NextVal = Builder.CreateInBoundsGEP(InVal, Inc, "ptrincdec"); |
| 288 | } else { |
| 289 | const llvm::Type *i8Ty = llvm::Type::getInt8PtrTy(VMContext); |
| 290 | NextVal = Builder.CreateBitCast(InVal, i8Ty, "tmp"); |
| 291 | NextVal = Builder.CreateGEP(NextVal, Inc, "ptrincdec"); |
| 292 | NextVal = Builder.CreateBitCast(NextVal, InVal->getType()); |
| 293 | } |
| 294 | } else if (InVal->getType() == llvm::Type::getInt1Ty(VMContext) && isInc) { |
| 295 | // Bool++ is an interesting case, due to promotion rules, we get: |
| 296 | // Bool++ -> Bool = Bool+1 -> Bool = (int)Bool+1 -> |
| 297 | // Bool = ((int)Bool+1) != 0 |
| 298 | // An interesting aspect of this is that increment is always true. |
| 299 | // Decrement does not have this property. |
| 300 | NextVal = llvm::ConstantInt::getTrue(VMContext); |
| 301 | } else if (isa<llvm::IntegerType>(InVal->getType())) { |
| 302 | NextVal = llvm::ConstantInt::get(InVal->getType(), AmountVal); |
| 303 | |
| 304 | // Signed integer overflow is undefined behavior. |
| 305 | if (ValTy->isSignedIntegerType()) |
| 306 | NextVal = Builder.CreateNSWAdd(InVal, NextVal, isInc ? "inc" : "dec"); |
| 307 | else |
| 308 | NextVal = Builder.CreateAdd(InVal, NextVal, isInc ? "inc" : "dec"); |
| 309 | } else { |
| 310 | // Add the inc/dec to the real part. |
| 311 | if (InVal->getType()->isFloatTy()) |
| 312 | NextVal = |
| 313 | llvm::ConstantFP::get(VMContext, |
| 314 | llvm::APFloat(static_cast<float>(AmountVal))); |
| 315 | else if (InVal->getType()->isDoubleTy()) |
| 316 | NextVal = |
| 317 | llvm::ConstantFP::get(VMContext, |
| 318 | llvm::APFloat(static_cast<double>(AmountVal))); |
| 319 | else { |
| 320 | llvm::APFloat F(static_cast<float>(AmountVal)); |
| 321 | bool ignored; |
| 322 | F.convert(Target.getLongDoubleFormat(), llvm::APFloat::rmTowardZero, |
| 323 | &ignored); |
| 324 | NextVal = llvm::ConstantFP::get(VMContext, F); |
| 325 | } |
| 326 | NextVal = Builder.CreateFAdd(InVal, NextVal, isInc ? "inc" : "dec"); |
| 327 | } |
| 328 | |
| 329 | // Store the updated result through the lvalue. |
| 330 | if (LV.isBitfield()) |
| 331 | EmitStoreThroughBitfieldLValue(RValue::get(NextVal), LV, ValTy, &NextVal); |
| 332 | else |
| 333 | EmitStoreThroughLValue(RValue::get(NextVal), LV, ValTy); |
| 334 | |
| 335 | // If this is a postinc, return the value read from memory, otherwise use the |
| 336 | // updated value. |
| 337 | return isPre ? NextVal : InVal; |
| 338 | } |
| 339 | |
| 340 | |
| 341 | CodeGenFunction::ComplexPairTy CodeGenFunction:: |
| 342 | EmitComplexPrePostIncDec(const UnaryOperator *E, LValue LV, |
| 343 | bool isInc, bool isPre) { |
| 344 | ComplexPairTy InVal = LoadComplexFromAddr(LV.getAddress(), |
| 345 | LV.isVolatileQualified()); |
| 346 | |
| 347 | llvm::Value *NextVal; |
| 348 | if (isa<llvm::IntegerType>(InVal.first->getType())) { |
| 349 | uint64_t AmountVal = isInc ? 1 : -1; |
| 350 | NextVal = llvm::ConstantInt::get(InVal.first->getType(), AmountVal, true); |
| 351 | |
| 352 | // Add the inc/dec to the real part. |
| 353 | NextVal = Builder.CreateAdd(InVal.first, NextVal, isInc ? "inc" : "dec"); |
| 354 | } else { |
| 355 | QualType ElemTy = E->getType()->getAs<ComplexType>()->getElementType(); |
| 356 | llvm::APFloat FVal(getContext().getFloatTypeSemantics(ElemTy), 1); |
| 357 | if (!isInc) |
| 358 | FVal.changeSign(); |
| 359 | NextVal = llvm::ConstantFP::get(getLLVMContext(), FVal); |
| 360 | |
| 361 | // Add the inc/dec to the real part. |
| 362 | NextVal = Builder.CreateFAdd(InVal.first, NextVal, isInc ? "inc" : "dec"); |
| 363 | } |
| 364 | |
| 365 | ComplexPairTy IncVal(NextVal, InVal.second); |
| 366 | |
| 367 | // Store the updated result through the lvalue. |
| 368 | StoreComplexToAddr(IncVal, LV.getAddress(), LV.isVolatileQualified()); |
| 369 | |
| 370 | // If this is a postinc, return the value read from memory, otherwise use the |
| 371 | // updated value. |
| 372 | return isPre ? IncVal : InVal; |
| 373 | } |
| 374 | |
| 375 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 376 | //===----------------------------------------------------------------------===// |
| 377 | // LValue Expression Emission |
| 378 | //===----------------------------------------------------------------------===// |
| 379 | |
Daniel Dunbar | 13e8173 | 2009-02-05 07:09:07 +0000 | [diff] [blame] | 380 | RValue CodeGenFunction::GetUndefRValue(QualType Ty) { |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 381 | if (Ty->isVoidType()) |
Daniel Dunbar | 13e8173 | 2009-02-05 07:09:07 +0000 | [diff] [blame] | 382 | return RValue::get(0); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 383 | |
| 384 | if (const ComplexType *CTy = Ty->getAs<ComplexType>()) { |
Daniel Dunbar | 8fa73ed | 2009-01-09 20:09:28 +0000 | [diff] [blame] | 385 | const llvm::Type *EltTy = ConvertType(CTy->getElementType()); |
Owen Anderson | 03e2050 | 2009-07-30 23:11:26 +0000 | [diff] [blame] | 386 | llvm::Value *U = llvm::UndefValue::get(EltTy); |
Daniel Dunbar | 8fa73ed | 2009-01-09 20:09:28 +0000 | [diff] [blame] | 387 | return RValue::getComplex(std::make_pair(U, U)); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 388 | } |
| 389 | |
| 390 | if (hasAggregateLLVMType(Ty)) { |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 391 | const llvm::Type *LTy = llvm::PointerType::getUnqual(ConvertType(Ty)); |
Owen Anderson | 03e2050 | 2009-07-30 23:11:26 +0000 | [diff] [blame] | 392 | return RValue::getAggregate(llvm::UndefValue::get(LTy)); |
Daniel Dunbar | 8fa73ed | 2009-01-09 20:09:28 +0000 | [diff] [blame] | 393 | } |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 394 | |
| 395 | return RValue::get(llvm::UndefValue::get(ConvertType(Ty))); |
Daniel Dunbar | ce1d38b | 2009-01-09 16:50:52 +0000 | [diff] [blame] | 396 | } |
| 397 | |
Daniel Dunbar | 13e8173 | 2009-02-05 07:09:07 +0000 | [diff] [blame] | 398 | RValue CodeGenFunction::EmitUnsupportedRValue(const Expr *E, |
| 399 | const char *Name) { |
| 400 | ErrorUnsupported(E, Name); |
| 401 | return GetUndefRValue(E->getType()); |
| 402 | } |
| 403 | |
Daniel Dunbar | 6ba82a4 | 2008-08-25 20:45:57 +0000 | [diff] [blame] | 404 | LValue CodeGenFunction::EmitUnsupportedLValue(const Expr *E, |
| 405 | const char *Name) { |
| 406 | ErrorUnsupported(E, Name); |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 407 | llvm::Type *Ty = llvm::PointerType::getUnqual(ConvertType(E->getType())); |
Owen Anderson | 03e2050 | 2009-07-30 23:11:26 +0000 | [diff] [blame] | 408 | return LValue::MakeAddr(llvm::UndefValue::get(Ty), |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 409 | MakeQualifiers(E->getType())); |
Daniel Dunbar | 6ba82a4 | 2008-08-25 20:45:57 +0000 | [diff] [blame] | 410 | } |
| 411 | |
Mike Stump | b14e62d | 2009-12-16 02:57:00 +0000 | [diff] [blame] | 412 | LValue CodeGenFunction::EmitCheckedLValue(const Expr *E) { |
| 413 | LValue LV = EmitLValue(E); |
| 414 | if (!isa<DeclRefExpr>(E) && !LV.isBitfield() && LV.isSimple()) |
| 415 | EmitCheck(LV.getAddress(), getContext().getTypeSize(E->getType()) / 8); |
| 416 | return LV; |
| 417 | } |
| 418 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 419 | /// EmitLValue - Emit code to compute a designator that specifies the location |
| 420 | /// of the expression. |
| 421 | /// |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 422 | /// This can return one of two things: a simple address or a bitfield reference. |
| 423 | /// In either case, the LLVM Value* in the LValue structure is guaranteed to be |
| 424 | /// an LLVM pointer type. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 425 | /// |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 426 | /// If this returns a bitfield reference, nothing about the pointee type of the |
| 427 | /// LLVM value is known: For example, it may not be a pointer to an integer. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 428 | /// |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 429 | /// If this returns a normal address, and if the lvalue's C type is fixed size, |
| 430 | /// this method guarantees that the returned pointer type will point to an LLVM |
| 431 | /// type of the same size of the lvalue's type. If the lvalue has a variable |
| 432 | /// length type, this is not possible. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 433 | /// |
| 434 | LValue CodeGenFunction::EmitLValue(const Expr *E) { |
| 435 | switch (E->getStmtClass()) { |
Daniel Dunbar | 6ba82a4 | 2008-08-25 20:45:57 +0000 | [diff] [blame] | 436 | default: return EmitUnsupportedLValue(E, "l-value expression"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 437 | |
Fariborz Jahanian | 820bca4 | 2009-12-09 23:35:29 +0000 | [diff] [blame] | 438 | case Expr::ObjCIsaExprClass: |
| 439 | return EmitObjCIsaExpr(cast<ObjCIsaExpr>(E)); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 440 | case Expr::BinaryOperatorClass: |
Daniel Dunbar | 80e62c2 | 2008-09-04 03:20:13 +0000 | [diff] [blame] | 441 | return EmitBinaryOperatorLValue(cast<BinaryOperator>(E)); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 442 | case Expr::CallExprClass: |
Anders Carlsson | faf8664 | 2009-09-01 21:18:52 +0000 | [diff] [blame] | 443 | case Expr::CXXMemberCallExprClass: |
Douglas Gregor | b460980 | 2008-11-14 16:09:21 +0000 | [diff] [blame] | 444 | case Expr::CXXOperatorCallExprClass: |
| 445 | return EmitCallExprLValue(cast<CallExpr>(E)); |
Daniel Dunbar | 5b5c9ef | 2009-02-11 20:59:32 +0000 | [diff] [blame] | 446 | case Expr::VAArgExprClass: |
| 447 | return EmitVAArgExprLValue(cast<VAArgExpr>(E)); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 448 | case Expr::DeclRefExprClass: |
Douglas Gregor | 1a49af9 | 2009-01-06 05:10:23 +0000 | [diff] [blame] | 449 | return EmitDeclRefLValue(cast<DeclRefExpr>(E)); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 450 | case Expr::ParenExprClass:return EmitLValue(cast<ParenExpr>(E)->getSubExpr()); |
Chris Lattner | d9f6910 | 2008-08-10 01:53:14 +0000 | [diff] [blame] | 451 | case Expr::PredefinedExprClass: |
| 452 | return EmitPredefinedLValue(cast<PredefinedExpr>(E)); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 453 | case Expr::StringLiteralClass: |
| 454 | return EmitStringLiteralLValue(cast<StringLiteral>(E)); |
Chris Lattner | eaf2bb8 | 2009-02-24 22:18:39 +0000 | [diff] [blame] | 455 | case Expr::ObjCEncodeExprClass: |
| 456 | return EmitObjCEncodeExprLValue(cast<ObjCEncodeExpr>(E)); |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 457 | |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 458 | case Expr::BlockDeclRefExprClass: |
Mike Stump | a99038c | 2009-02-28 09:07:16 +0000 | [diff] [blame] | 459 | return EmitBlockDeclRefLValue(cast<BlockDeclRefExpr>(E)); |
| 460 | |
Anders Carlsson | b58d017 | 2009-05-30 23:23:33 +0000 | [diff] [blame] | 461 | case Expr::CXXTemporaryObjectExprClass: |
| 462 | case Expr::CXXConstructExprClass: |
Anders Carlsson | e61c9e8 | 2009-05-30 23:30:54 +0000 | [diff] [blame] | 463 | return EmitCXXConstructLValue(cast<CXXConstructExpr>(E)); |
| 464 | case Expr::CXXBindTemporaryExprClass: |
| 465 | return EmitCXXBindTemporaryLValue(cast<CXXBindTemporaryExpr>(E)); |
Anders Carlsson | b9ea0b5 | 2009-09-14 01:10:45 +0000 | [diff] [blame] | 466 | case Expr::CXXExprWithTemporariesClass: |
| 467 | return EmitCXXExprWithTemporariesLValue(cast<CXXExprWithTemporaries>(E)); |
Anders Carlsson | 370e538 | 2009-11-14 01:51:50 +0000 | [diff] [blame] | 468 | case Expr::CXXZeroInitValueExprClass: |
| 469 | return EmitNullInitializationLValue(cast<CXXZeroInitValueExpr>(E)); |
| 470 | case Expr::CXXDefaultArgExprClass: |
| 471 | return EmitLValue(cast<CXXDefaultArgExpr>(E)->getExpr()); |
Mike Stump | c2e84ae | 2009-11-15 08:09:41 +0000 | [diff] [blame] | 472 | case Expr::CXXTypeidExprClass: |
| 473 | return EmitCXXTypeidLValue(cast<CXXTypeidExpr>(E)); |
Anders Carlsson | e61c9e8 | 2009-05-30 23:30:54 +0000 | [diff] [blame] | 474 | |
Daniel Dunbar | 0a04d77 | 2008-08-23 10:51:21 +0000 | [diff] [blame] | 475 | case Expr::ObjCMessageExprClass: |
| 476 | return EmitObjCMessageExprLValue(cast<ObjCMessageExpr>(E)); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 477 | case Expr::ObjCIvarRefExprClass: |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 478 | return EmitObjCIvarRefLValue(cast<ObjCIvarRefExpr>(E)); |
Daniel Dunbar | 6ba82a4 | 2008-08-25 20:45:57 +0000 | [diff] [blame] | 479 | case Expr::ObjCPropertyRefExprClass: |
Daniel Dunbar | 85c59ed | 2008-08-29 08:11:39 +0000 | [diff] [blame] | 480 | return EmitObjCPropertyRefLValue(cast<ObjCPropertyRefExpr>(E)); |
Fariborz Jahanian | 09105f5 | 2009-08-20 17:02:02 +0000 | [diff] [blame] | 481 | case Expr::ObjCImplicitSetterGetterRefExprClass: |
| 482 | return EmitObjCKVCRefLValue(cast<ObjCImplicitSetterGetterRefExpr>(E)); |
Douglas Gregor | cd9b46e | 2008-11-04 14:56:14 +0000 | [diff] [blame] | 483 | case Expr::ObjCSuperExprClass: |
Chris Lattner | 6545994 | 2009-04-25 19:35:26 +0000 | [diff] [blame] | 484 | return EmitObjCSuperExprLValue(cast<ObjCSuperExpr>(E)); |
Douglas Gregor | cd9b46e | 2008-11-04 14:56:14 +0000 | [diff] [blame] | 485 | |
Chris Lattner | 6545994 | 2009-04-25 19:35:26 +0000 | [diff] [blame] | 486 | case Expr::StmtExprClass: |
| 487 | return EmitStmtExprLValue(cast<StmtExpr>(E)); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 488 | case Expr::UnaryOperatorClass: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 489 | return EmitUnaryOpLValue(cast<UnaryOperator>(E)); |
| 490 | case Expr::ArraySubscriptExprClass: |
| 491 | return EmitArraySubscriptExpr(cast<ArraySubscriptExpr>(E)); |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 492 | case Expr::ExtVectorElementExprClass: |
| 493 | return EmitExtVectorElementExpr(cast<ExtVectorElementExpr>(E)); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 494 | case Expr::MemberExprClass: |
Douglas Gregor | bd4c4ae | 2009-08-26 22:36:53 +0000 | [diff] [blame] | 495 | return EmitMemberExpr(cast<MemberExpr>(E)); |
Eli Friedman | 06e863f | 2008-05-13 23:18:27 +0000 | [diff] [blame] | 496 | case Expr::CompoundLiteralExprClass: |
| 497 | return EmitCompoundLiteralLValue(cast<CompoundLiteralExpr>(E)); |
Daniel Dunbar | 9034558 | 2009-03-24 02:38:23 +0000 | [diff] [blame] | 498 | case Expr::ConditionalOperatorClass: |
Anders Carlsson | 6fcec8b | 2009-09-15 16:35:24 +0000 | [diff] [blame] | 499 | return EmitConditionalOperatorLValue(cast<ConditionalOperator>(E)); |
Chris Lattner | 670a62c | 2008-12-12 05:35:08 +0000 | [diff] [blame] | 500 | case Expr::ChooseExprClass: |
Eli Friedman | 7976932 | 2009-03-04 05:52:32 +0000 | [diff] [blame] | 501 | return EmitLValue(cast<ChooseExpr>(E)->getChosenSubExpr(getContext())); |
Chris Lattner | c3953a6 | 2009-03-18 04:02:57 +0000 | [diff] [blame] | 502 | case Expr::ImplicitCastExprClass: |
| 503 | case Expr::CStyleCastExprClass: |
| 504 | case Expr::CXXFunctionalCastExprClass: |
| 505 | case Expr::CXXStaticCastExprClass: |
| 506 | case Expr::CXXDynamicCastExprClass: |
| 507 | case Expr::CXXReinterpretCastExprClass: |
| 508 | case Expr::CXXConstCastExprClass: |
Chris Lattner | 75dfeda | 2009-03-18 18:28:57 +0000 | [diff] [blame] | 509 | return EmitCastLValue(cast<CastExpr>(E)); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 510 | } |
| 511 | } |
| 512 | |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 513 | llvm::Value *CodeGenFunction::EmitLoadOfScalar(llvm::Value *Addr, bool Volatile, |
| 514 | QualType Ty) { |
Daniel Dunbar | 2da84ff | 2009-11-29 21:23:36 +0000 | [diff] [blame] | 515 | llvm::LoadInst *Load = Builder.CreateLoad(Addr, "tmp"); |
| 516 | if (Volatile) |
| 517 | Load->setVolatile(true); |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 518 | |
Anders Carlsson | 3bb423b | 2009-05-19 19:36:19 +0000 | [diff] [blame] | 519 | // Bool can have different representation in memory than in registers. |
Daniel Dunbar | 2da84ff | 2009-11-29 21:23:36 +0000 | [diff] [blame] | 520 | llvm::Value *V = Load; |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 521 | if (Ty->isBooleanType()) |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 522 | if (V->getType() != llvm::Type::getInt1Ty(VMContext)) |
| 523 | V = Builder.CreateTrunc(V, llvm::Type::getInt1Ty(VMContext), "tobool"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 524 | |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 525 | return V; |
| 526 | } |
| 527 | |
| 528 | void CodeGenFunction::EmitStoreOfScalar(llvm::Value *Value, llvm::Value *Addr, |
Anders Carlsson | b4aa466 | 2009-05-19 18:50:41 +0000 | [diff] [blame] | 529 | bool Volatile, QualType Ty) { |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 530 | |
Anders Carlsson | 3bb423b | 2009-05-19 19:36:19 +0000 | [diff] [blame] | 531 | if (Ty->isBooleanType()) { |
| 532 | // Bool can have different representation in memory than in registers. |
Anders Carlsson | 3bb423b | 2009-05-19 19:36:19 +0000 | [diff] [blame] | 533 | const llvm::PointerType *DstPtr = cast<llvm::PointerType>(Addr->getType()); |
Eli Friedman | 2b06d34 | 2009-12-01 22:31:51 +0000 | [diff] [blame] | 534 | Value = Builder.CreateIntCast(Value, DstPtr->getElementType(), false); |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 535 | } |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 536 | Builder.CreateStore(Value, Addr, Volatile); |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 537 | } |
| 538 | |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 539 | /// EmitLoadOfLValue - Given an expression that represents a value lvalue, this |
| 540 | /// method emits the address of the lvalue, then loads the result as an rvalue, |
| 541 | /// returning the rvalue. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 542 | RValue CodeGenFunction::EmitLoadOfLValue(LValue LV, QualType ExprType) { |
Fariborz Jahanian | dbd32c2 | 2008-11-19 17:34:06 +0000 | [diff] [blame] | 543 | if (LV.isObjCWeak()) { |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 544 | // load of a __weak object. |
Fariborz Jahanian | 6dc2317 | 2008-11-18 21:45:40 +0000 | [diff] [blame] | 545 | llvm::Value *AddrWeakObj = LV.getAddress(); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 546 | return RValue::get(CGM.getObjCRuntime().EmitObjCWeakRead(*this, |
| 547 | AddrWeakObj)); |
Fariborz Jahanian | 6dc2317 | 2008-11-18 21:45:40 +0000 | [diff] [blame] | 548 | } |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 549 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 550 | if (LV.isSimple()) { |
| 551 | llvm::Value *Ptr = LV.getAddress(); |
| 552 | const llvm::Type *EltTy = |
| 553 | cast<llvm::PointerType>(Ptr->getType())->getElementType(); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 554 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 555 | // Simple scalar l-value. |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 556 | if (EltTy->isSingleValueType()) |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 557 | return RValue::get(EmitLoadOfScalar(Ptr, LV.isVolatileQualified(), |
Daniel Dunbar | 9d9cc87 | 2009-02-10 00:57:50 +0000 | [diff] [blame] | 558 | ExprType)); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 559 | |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 560 | assert(ExprType->isFunctionType() && "Unknown scalar value"); |
| 561 | return RValue::get(Ptr); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 562 | } |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 563 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 564 | if (LV.isVectorElt()) { |
Eli Friedman | 1e692ac | 2008-06-13 23:01:12 +0000 | [diff] [blame] | 565 | llvm::Value *Vec = Builder.CreateLoad(LV.getVectorAddr(), |
| 566 | LV.isVolatileQualified(), "tmp"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 567 | return RValue::get(Builder.CreateExtractElement(Vec, LV.getVectorIdx(), |
| 568 | "vecext")); |
| 569 | } |
Chris Lattner | 46ea8eb | 2007-08-03 00:16:29 +0000 | [diff] [blame] | 570 | |
| 571 | // If this is a reference to a subset of the elements of a vector, either |
| 572 | // shuffle the input or extract/insert them as appropriate. |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 573 | if (LV.isExtVectorElt()) |
| 574 | return EmitLoadOfExtVectorElementLValue(LV, ExprType); |
Lauro Ramos Venancio | 3b8c22d | 2008-01-22 20:17:04 +0000 | [diff] [blame] | 575 | |
| 576 | if (LV.isBitfield()) |
| 577 | return EmitLoadOfBitfieldLValue(LV, ExprType); |
| 578 | |
Daniel Dunbar | 85c59ed | 2008-08-29 08:11:39 +0000 | [diff] [blame] | 579 | if (LV.isPropertyRef()) |
| 580 | return EmitLoadOfPropertyRefLValue(LV, ExprType); |
| 581 | |
Chris Lattner | 73525de | 2009-02-16 21:11:58 +0000 | [diff] [blame] | 582 | assert(LV.isKVCRef() && "Unknown LValue type!"); |
| 583 | return EmitLoadOfKVCRefLValue(LV, ExprType); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 584 | } |
| 585 | |
Lauro Ramos Venancio | 3b8c22d | 2008-01-22 20:17:04 +0000 | [diff] [blame] | 586 | RValue CodeGenFunction::EmitLoadOfBitfieldLValue(LValue LV, |
| 587 | QualType ExprType) { |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 588 | unsigned StartBit = LV.getBitfieldStartBit(); |
| 589 | unsigned BitfieldSize = LV.getBitfieldSize(); |
Lauro Ramos Venancio | 3b8c22d | 2008-01-22 20:17:04 +0000 | [diff] [blame] | 590 | llvm::Value *Ptr = LV.getBitfieldAddr(); |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 591 | |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 592 | const llvm::Type *EltTy = |
Lauro Ramos Venancio | 3b8c22d | 2008-01-22 20:17:04 +0000 | [diff] [blame] | 593 | cast<llvm::PointerType>(Ptr->getType())->getElementType(); |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 594 | unsigned EltTySize = CGM.getTargetData().getTypeSizeInBits(EltTy); |
Lauro Ramos Venancio | 3b8c22d | 2008-01-22 20:17:04 +0000 | [diff] [blame] | 595 | |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 596 | // In some cases the bitfield may straddle two memory locations. Currently we |
| 597 | // load the entire bitfield, then do the magic to sign-extend it if |
| 598 | // necessary. This results in somewhat more code than necessary for the common |
| 599 | // case (one load), since two shifts accomplish both the masking and sign |
| 600 | // extension. |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 601 | unsigned LowBits = std::min(BitfieldSize, EltTySize - StartBit); |
| 602 | llvm::Value *Val = Builder.CreateLoad(Ptr, LV.isVolatileQualified(), "tmp"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 603 | |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 604 | // Shift to proper location. |
Daniel Dunbar | f3edc2f | 2008-11-13 02:20:34 +0000 | [diff] [blame] | 605 | if (StartBit) |
Chris Lattner | 86b85b2 | 2009-12-06 17:22:42 +0000 | [diff] [blame] | 606 | Val = Builder.CreateLShr(Val, StartBit, "bf.lo"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 607 | |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 608 | // Mask off unused bits. |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 609 | llvm::Constant *LowMask = llvm::ConstantInt::get(VMContext, |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 610 | llvm::APInt::getLowBitsSet(EltTySize, LowBits)); |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 611 | Val = Builder.CreateAnd(Val, LowMask, "bf.lo.cleared"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 612 | |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 613 | // Fetch the high bits if necessary. |
| 614 | if (LowBits < BitfieldSize) { |
| 615 | unsigned HighBits = BitfieldSize - LowBits; |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 616 | llvm::Value *HighPtr = Builder.CreateGEP(Ptr, llvm::ConstantInt::get( |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 617 | llvm::Type::getInt32Ty(VMContext), 1), "bf.ptr.hi"); |
| 618 | llvm::Value *HighVal = Builder.CreateLoad(HighPtr, |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 619 | LV.isVolatileQualified(), |
| 620 | "tmp"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 621 | |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 622 | // Mask off unused bits. |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 623 | llvm::Constant *HighMask = llvm::ConstantInt::get(VMContext, |
| 624 | llvm::APInt::getLowBitsSet(EltTySize, HighBits)); |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 625 | HighVal = Builder.CreateAnd(HighVal, HighMask, "bf.lo.cleared"); |
Lauro Ramos Venancio | 3b8c22d | 2008-01-22 20:17:04 +0000 | [diff] [blame] | 626 | |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 627 | // Shift to proper location and or in to bitfield value. |
Chris Lattner | 86b85b2 | 2009-12-06 17:22:42 +0000 | [diff] [blame] | 628 | HighVal = Builder.CreateShl(HighVal, LowBits); |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 629 | Val = Builder.CreateOr(Val, HighVal, "bf.val"); |
| 630 | } |
Lauro Ramos Venancio | 3b8c22d | 2008-01-22 20:17:04 +0000 | [diff] [blame] | 631 | |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 632 | // Sign extend if necessary. |
| 633 | if (LV.isBitfieldSigned()) { |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 634 | llvm::Value *ExtraBits = llvm::ConstantInt::get(EltTy, |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 635 | EltTySize - BitfieldSize); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 636 | Val = Builder.CreateAShr(Builder.CreateShl(Val, ExtraBits), |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 637 | ExtraBits, "bf.val.sext"); |
| 638 | } |
Eli Friedman | 316bb1b | 2008-05-17 20:03:47 +0000 | [diff] [blame] | 639 | |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 640 | // The bitfield type and the normal type differ when the storage sizes differ |
| 641 | // (currently just _Bool). |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 642 | Val = Builder.CreateIntCast(Val, ConvertType(ExprType), false, "tmp"); |
Eli Friedman | 316bb1b | 2008-05-17 20:03:47 +0000 | [diff] [blame] | 643 | |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 644 | return RValue::get(Val); |
Lauro Ramos Venancio | 3b8c22d | 2008-01-22 20:17:04 +0000 | [diff] [blame] | 645 | } |
| 646 | |
Daniel Dunbar | 85c59ed | 2008-08-29 08:11:39 +0000 | [diff] [blame] | 647 | RValue CodeGenFunction::EmitLoadOfPropertyRefLValue(LValue LV, |
| 648 | QualType ExprType) { |
| 649 | return EmitObjCPropertyGet(LV.getPropertyRefExpr()); |
| 650 | } |
| 651 | |
Fariborz Jahanian | 43f4470 | 2008-11-22 22:30:21 +0000 | [diff] [blame] | 652 | RValue CodeGenFunction::EmitLoadOfKVCRefLValue(LValue LV, |
| 653 | QualType ExprType) { |
| 654 | return EmitObjCPropertyGet(LV.getKVCRefExpr()); |
| 655 | } |
| 656 | |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 657 | // If this is a reference to a subset of the elements of a vector, create an |
| 658 | // appropriate shufflevector. |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 659 | RValue CodeGenFunction::EmitLoadOfExtVectorElementLValue(LValue LV, |
| 660 | QualType ExprType) { |
Eli Friedman | 1e692ac | 2008-06-13 23:01:12 +0000 | [diff] [blame] | 661 | llvm::Value *Vec = Builder.CreateLoad(LV.getExtVectorAddr(), |
| 662 | LV.isVolatileQualified(), "tmp"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 663 | |
Nate Begeman | 8a99764 | 2008-05-09 06:41:27 +0000 | [diff] [blame] | 664 | const llvm::Constant *Elts = LV.getExtVectorElts(); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 665 | |
| 666 | // If the result of the expression is a non-vector type, we must be extracting |
| 667 | // a single element. Just codegen as an extractelement. |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 668 | const VectorType *ExprVT = ExprType->getAs<VectorType>(); |
Chris Lattner | cf60cd2 | 2007-08-10 17:10:08 +0000 | [diff] [blame] | 669 | if (!ExprVT) { |
Dan Gohman | 4f8d123 | 2008-05-22 00:50:06 +0000 | [diff] [blame] | 670 | unsigned InIdx = getAccessedFieldNo(0, Elts); |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 671 | llvm::Value *Elt = llvm::ConstantInt::get( |
| 672 | llvm::Type::getInt32Ty(VMContext), InIdx); |
Chris Lattner | 34cdc86 | 2007-08-03 16:18:34 +0000 | [diff] [blame] | 673 | return RValue::get(Builder.CreateExtractElement(Vec, Elt, "tmp")); |
| 674 | } |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 675 | |
| 676 | // Always use shuffle vector to try to retain the original program structure |
Chris Lattner | cf60cd2 | 2007-08-10 17:10:08 +0000 | [diff] [blame] | 677 | unsigned NumResultElts = ExprVT->getNumElements(); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 678 | |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 679 | llvm::SmallVector<llvm::Constant*, 4> Mask; |
Chris Lattner | 34cdc86 | 2007-08-03 16:18:34 +0000 | [diff] [blame] | 680 | for (unsigned i = 0; i != NumResultElts; ++i) { |
Dan Gohman | 4f8d123 | 2008-05-22 00:50:06 +0000 | [diff] [blame] | 681 | unsigned InIdx = getAccessedFieldNo(i, Elts); |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 682 | Mask.push_back(llvm::ConstantInt::get( |
| 683 | llvm::Type::getInt32Ty(VMContext), InIdx)); |
Chris Lattner | 34cdc86 | 2007-08-03 16:18:34 +0000 | [diff] [blame] | 684 | } |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 685 | |
Owen Anderson | 4a28932 | 2009-07-28 21:22:35 +0000 | [diff] [blame] | 686 | llvm::Value *MaskV = llvm::ConstantVector::get(&Mask[0], Mask.size()); |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 687 | Vec = Builder.CreateShuffleVector(Vec, |
Owen Anderson | 03e2050 | 2009-07-30 23:11:26 +0000 | [diff] [blame] | 688 | llvm::UndefValue::get(Vec->getType()), |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 689 | MaskV, "tmp"); |
| 690 | return RValue::get(Vec); |
Chris Lattner | 34cdc86 | 2007-08-03 16:18:34 +0000 | [diff] [blame] | 691 | } |
| 692 | |
| 693 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 694 | |
| 695 | /// EmitStoreThroughLValue - Store the specified rvalue into the specified |
| 696 | /// lvalue, where both are guaranteed to the have the same type, and that type |
| 697 | /// is 'Ty'. |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 698 | void CodeGenFunction::EmitStoreThroughLValue(RValue Src, LValue Dst, |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 699 | QualType Ty) { |
Chris Lattner | 017d6aa | 2007-08-03 16:28:33 +0000 | [diff] [blame] | 700 | if (!Dst.isSimple()) { |
| 701 | if (Dst.isVectorElt()) { |
| 702 | // Read/modify/write the vector, inserting the new element. |
Eli Friedman | 1e692ac | 2008-06-13 23:01:12 +0000 | [diff] [blame] | 703 | llvm::Value *Vec = Builder.CreateLoad(Dst.getVectorAddr(), |
| 704 | Dst.isVolatileQualified(), "tmp"); |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 705 | Vec = Builder.CreateInsertElement(Vec, Src.getScalarVal(), |
Chris Lattner | 017d6aa | 2007-08-03 16:28:33 +0000 | [diff] [blame] | 706 | Dst.getVectorIdx(), "vecins"); |
Eli Friedman | 1e692ac | 2008-06-13 23:01:12 +0000 | [diff] [blame] | 707 | Builder.CreateStore(Vec, Dst.getVectorAddr(),Dst.isVolatileQualified()); |
Chris Lattner | 017d6aa | 2007-08-03 16:28:33 +0000 | [diff] [blame] | 708 | return; |
| 709 | } |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 710 | |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 711 | // If this is an update of extended vector elements, insert them as |
| 712 | // appropriate. |
| 713 | if (Dst.isExtVectorElt()) |
| 714 | return EmitStoreThroughExtVectorComponentLValue(Src, Dst, Ty); |
Lauro Ramos Venancio | a0c5d0e | 2008-01-22 22:36:45 +0000 | [diff] [blame] | 715 | |
| 716 | if (Dst.isBitfield()) |
| 717 | return EmitStoreThroughBitfieldLValue(Src, Dst, Ty); |
| 718 | |
Daniel Dunbar | 85c59ed | 2008-08-29 08:11:39 +0000 | [diff] [blame] | 719 | if (Dst.isPropertyRef()) |
| 720 | return EmitStoreThroughPropertyRefLValue(Src, Dst, Ty); |
| 721 | |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 722 | assert(Dst.isKVCRef() && "Unknown LValue type"); |
| 723 | return EmitStoreThroughKVCRefLValue(Src, Dst, Ty); |
Chris Lattner | 017d6aa | 2007-08-03 16:28:33 +0000 | [diff] [blame] | 724 | } |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 725 | |
Fariborz Jahanian | 4f676ed | 2009-02-21 00:30:43 +0000 | [diff] [blame] | 726 | if (Dst.isObjCWeak() && !Dst.isNonGC()) { |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 727 | // load of a __weak object. |
Fariborz Jahanian | dbd32c2 | 2008-11-19 17:34:06 +0000 | [diff] [blame] | 728 | llvm::Value *LvalueDst = Dst.getAddress(); |
| 729 | llvm::Value *src = Src.getScalarVal(); |
Mike Stump | f33651c | 2009-04-14 00:57:29 +0000 | [diff] [blame] | 730 | CGM.getObjCRuntime().EmitObjCWeakAssign(*this, src, LvalueDst); |
Fariborz Jahanian | dbd32c2 | 2008-11-19 17:34:06 +0000 | [diff] [blame] | 731 | return; |
| 732 | } |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 733 | |
Fariborz Jahanian | 4f676ed | 2009-02-21 00:30:43 +0000 | [diff] [blame] | 734 | if (Dst.isObjCStrong() && !Dst.isNonGC()) { |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 735 | // load of a __strong object. |
Fariborz Jahanian | dbd32c2 | 2008-11-19 17:34:06 +0000 | [diff] [blame] | 736 | llvm::Value *LvalueDst = Dst.getAddress(); |
| 737 | llvm::Value *src = Src.getScalarVal(); |
Fariborz Jahanian | 6c7a1f3 | 2009-09-24 22:25:38 +0000 | [diff] [blame] | 738 | if (Dst.isObjCIvar()) { |
| 739 | assert(Dst.getBaseIvarExp() && "BaseIvarExp is NULL"); |
| 740 | const llvm::Type *ResultType = ConvertType(getContext().LongTy); |
| 741 | llvm::Value *RHS = EmitScalarExpr(Dst.getBaseIvarExp()); |
Fariborz Jahanian | 76368e8 | 2009-09-25 00:00:20 +0000 | [diff] [blame] | 742 | llvm::Value *dst = RHS; |
Fariborz Jahanian | 6c7a1f3 | 2009-09-24 22:25:38 +0000 | [diff] [blame] | 743 | RHS = Builder.CreatePtrToInt(RHS, ResultType, "sub.ptr.rhs.cast"); |
| 744 | llvm::Value *LHS = |
| 745 | Builder.CreatePtrToInt(LvalueDst, ResultType, "sub.ptr.lhs.cast"); |
| 746 | llvm::Value *BytesBetween = Builder.CreateSub(LHS, RHS, "ivar.offset"); |
Fariborz Jahanian | 76368e8 | 2009-09-25 00:00:20 +0000 | [diff] [blame] | 747 | CGM.getObjCRuntime().EmitObjCIvarAssign(*this, src, dst, |
Fariborz Jahanian | 6c7a1f3 | 2009-09-24 22:25:38 +0000 | [diff] [blame] | 748 | BytesBetween); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 749 | } else if (Dst.isGlobalObjCRef()) |
Fariborz Jahanian | bf63b87 | 2009-05-04 23:27:20 +0000 | [diff] [blame] | 750 | CGM.getObjCRuntime().EmitObjCGlobalAssign(*this, src, LvalueDst); |
| 751 | else |
| 752 | CGM.getObjCRuntime().EmitObjCStrongCastAssign(*this, src, LvalueDst); |
Fariborz Jahanian | dbd32c2 | 2008-11-19 17:34:06 +0000 | [diff] [blame] | 753 | return; |
| 754 | } |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 755 | |
Chris Lattner | 883f6a7 | 2007-08-11 00:04:45 +0000 | [diff] [blame] | 756 | assert(Src.isScalar() && "Can't emit an agg store with this method"); |
Anders Carlsson | b4aa466 | 2009-05-19 18:50:41 +0000 | [diff] [blame] | 757 | EmitStoreOfScalar(Src.getScalarVal(), Dst.getAddress(), |
| 758 | Dst.isVolatileQualified(), Ty); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 759 | } |
| 760 | |
Lauro Ramos Venancio | a0c5d0e | 2008-01-22 22:36:45 +0000 | [diff] [blame] | 761 | void CodeGenFunction::EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst, |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 762 | QualType Ty, |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 763 | llvm::Value **Result) { |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 764 | unsigned StartBit = Dst.getBitfieldStartBit(); |
| 765 | unsigned BitfieldSize = Dst.getBitfieldSize(); |
Lauro Ramos Venancio | a0c5d0e | 2008-01-22 22:36:45 +0000 | [diff] [blame] | 766 | llvm::Value *Ptr = Dst.getBitfieldAddr(); |
Lauro Ramos Venancio | a0c5d0e | 2008-01-22 22:36:45 +0000 | [diff] [blame] | 767 | |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 768 | const llvm::Type *EltTy = |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 769 | cast<llvm::PointerType>(Ptr->getType())->getElementType(); |
| 770 | unsigned EltTySize = CGM.getTargetData().getTypeSizeInBits(EltTy); |
| 771 | |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 772 | // Get the new value, cast to the appropriate type and masked to exactly the |
| 773 | // size of the bit-field. |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 774 | llvm::Value *SrcVal = Src.getScalarVal(); |
| 775 | llvm::Value *NewVal = Builder.CreateIntCast(SrcVal, EltTy, false, "tmp"); |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 776 | llvm::Constant *Mask = llvm::ConstantInt::get(VMContext, |
| 777 | llvm::APInt::getLowBitsSet(EltTySize, BitfieldSize)); |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 778 | NewVal = Builder.CreateAnd(NewVal, Mask, "bf.value"); |
Lauro Ramos Venancio | a0c5d0e | 2008-01-22 22:36:45 +0000 | [diff] [blame] | 779 | |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 780 | // Return the new value of the bit-field, if requested. |
| 781 | if (Result) { |
| 782 | // Cast back to the proper type for result. |
| 783 | const llvm::Type *SrcTy = SrcVal->getType(); |
| 784 | llvm::Value *SrcTrunc = Builder.CreateIntCast(NewVal, SrcTy, false, |
| 785 | "bf.reload.val"); |
| 786 | |
| 787 | // Sign extend if necessary. |
| 788 | if (Dst.isBitfieldSigned()) { |
| 789 | unsigned SrcTySize = CGM.getTargetData().getTypeSizeInBits(SrcTy); |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 790 | llvm::Value *ExtraBits = llvm::ConstantInt::get(SrcTy, |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 791 | SrcTySize - BitfieldSize); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 792 | SrcTrunc = Builder.CreateAShr(Builder.CreateShl(SrcTrunc, ExtraBits), |
Daniel Dunbar | ed3849b | 2008-11-19 09:36:46 +0000 | [diff] [blame] | 793 | ExtraBits, "bf.reload.sext"); |
| 794 | } |
| 795 | |
| 796 | *Result = SrcTrunc; |
| 797 | } |
| 798 | |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 799 | // In some cases the bitfield may straddle two memory locations. Emit the low |
| 800 | // part first and check to see if the high needs to be done. |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 801 | unsigned LowBits = std::min(BitfieldSize, EltTySize - StartBit); |
| 802 | llvm::Value *LowVal = Builder.CreateLoad(Ptr, Dst.isVolatileQualified(), |
| 803 | "bf.prev.low"); |
Eli Friedman | 316bb1b | 2008-05-17 20:03:47 +0000 | [diff] [blame] | 804 | |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 805 | // Compute the mask for zero-ing the low part of this bitfield. |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 806 | llvm::Constant *InvMask = |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 807 | llvm::ConstantInt::get(VMContext, |
| 808 | ~llvm::APInt::getBitsSet(EltTySize, StartBit, StartBit + LowBits)); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 809 | |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 810 | // Compute the new low part as |
| 811 | // LowVal = (LowVal & InvMask) | (NewVal << StartBit), |
| 812 | // with the shift of NewVal implicitly stripping the high bits. |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 813 | llvm::Value *NewLowVal = |
Chris Lattner | 86b85b2 | 2009-12-06 17:22:42 +0000 | [diff] [blame] | 814 | Builder.CreateShl(NewVal, StartBit, "bf.value.lo"); |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 815 | LowVal = Builder.CreateAnd(LowVal, InvMask, "bf.prev.lo.cleared"); |
| 816 | LowVal = Builder.CreateOr(LowVal, NewLowVal, "bf.new.lo"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 817 | |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 818 | // Write back. |
| 819 | Builder.CreateStore(LowVal, Ptr, Dst.isVolatileQualified()); |
Eli Friedman | 316bb1b | 2008-05-17 20:03:47 +0000 | [diff] [blame] | 820 | |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 821 | // If the low part doesn't cover the bitfield emit a high part. |
| 822 | if (LowBits < BitfieldSize) { |
| 823 | unsigned HighBits = BitfieldSize - LowBits; |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 824 | llvm::Value *HighPtr = Builder.CreateGEP(Ptr, llvm::ConstantInt::get( |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 825 | llvm::Type::getInt32Ty(VMContext), 1), "bf.ptr.hi"); |
| 826 | llvm::Value *HighVal = Builder.CreateLoad(HighPtr, |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 827 | Dst.isVolatileQualified(), |
| 828 | "bf.prev.hi"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 829 | |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 830 | // Compute the mask for zero-ing the high part of this bitfield. |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 831 | llvm::Constant *InvMask = |
| 832 | llvm::ConstantInt::get(VMContext, ~llvm::APInt::getLowBitsSet(EltTySize, |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 833 | HighBits)); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 834 | |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 835 | // Compute the new high part as |
| 836 | // HighVal = (HighVal & InvMask) | (NewVal lshr LowBits), |
| 837 | // where the high bits of NewVal have already been cleared and the |
| 838 | // shift stripping the low bits. |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 839 | llvm::Value *NewHighVal = |
Chris Lattner | 86b85b2 | 2009-12-06 17:22:42 +0000 | [diff] [blame] | 840 | Builder.CreateLShr(NewVal, LowBits, "bf.value.high"); |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 841 | HighVal = Builder.CreateAnd(HighVal, InvMask, "bf.prev.hi.cleared"); |
| 842 | HighVal = Builder.CreateOr(HighVal, NewHighVal, "bf.new.hi"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 843 | |
Daniel Dunbar | 10e3ded | 2008-08-06 05:08:45 +0000 | [diff] [blame] | 844 | // Write back. |
| 845 | Builder.CreateStore(HighVal, HighPtr, Dst.isVolatileQualified()); |
| 846 | } |
Lauro Ramos Venancio | a0c5d0e | 2008-01-22 22:36:45 +0000 | [diff] [blame] | 847 | } |
| 848 | |
Daniel Dunbar | 85c59ed | 2008-08-29 08:11:39 +0000 | [diff] [blame] | 849 | void CodeGenFunction::EmitStoreThroughPropertyRefLValue(RValue Src, |
| 850 | LValue Dst, |
| 851 | QualType Ty) { |
| 852 | EmitObjCPropertySet(Dst.getPropertyRefExpr(), Src); |
| 853 | } |
| 854 | |
Fariborz Jahanian | 43f4470 | 2008-11-22 22:30:21 +0000 | [diff] [blame] | 855 | void CodeGenFunction::EmitStoreThroughKVCRefLValue(RValue Src, |
| 856 | LValue Dst, |
| 857 | QualType Ty) { |
| 858 | EmitObjCPropertySet(Dst.getKVCRefExpr(), Src); |
| 859 | } |
| 860 | |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 861 | void CodeGenFunction::EmitStoreThroughExtVectorComponentLValue(RValue Src, |
| 862 | LValue Dst, |
| 863 | QualType Ty) { |
Chris Lattner | 017d6aa | 2007-08-03 16:28:33 +0000 | [diff] [blame] | 864 | // This access turns into a read/modify/write of the vector. Load the input |
| 865 | // value now. |
Eli Friedman | 1e692ac | 2008-06-13 23:01:12 +0000 | [diff] [blame] | 866 | llvm::Value *Vec = Builder.CreateLoad(Dst.getExtVectorAddr(), |
| 867 | Dst.isVolatileQualified(), "tmp"); |
Nate Begeman | 8a99764 | 2008-05-09 06:41:27 +0000 | [diff] [blame] | 868 | const llvm::Constant *Elts = Dst.getExtVectorElts(); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 869 | |
Chris Lattner | 9b65551 | 2007-08-31 22:49:20 +0000 | [diff] [blame] | 870 | llvm::Value *SrcVal = Src.getScalarVal(); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 871 | |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 872 | if (const VectorType *VTy = Ty->getAs<VectorType>()) { |
Chris Lattner | 7e6b51b | 2007-08-03 16:37:04 +0000 | [diff] [blame] | 873 | unsigned NumSrcElts = VTy->getNumElements(); |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 874 | unsigned NumDstElts = |
| 875 | cast<llvm::VectorType>(Vec->getType())->getNumElements(); |
| 876 | if (NumDstElts == NumSrcElts) { |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 877 | // Use shuffle vector is the src and destination are the same number of |
| 878 | // elements and restore the vector mask since it is on the side it will be |
| 879 | // stored. |
Nate Begeman | 6e5dd86 | 2009-06-26 21:12:50 +0000 | [diff] [blame] | 880 | llvm::SmallVector<llvm::Constant*, 4> Mask(NumDstElts); |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 881 | for (unsigned i = 0; i != NumSrcElts; ++i) { |
| 882 | unsigned InIdx = getAccessedFieldNo(i, Elts); |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 883 | Mask[InIdx] = llvm::ConstantInt::get( |
| 884 | llvm::Type::getInt32Ty(VMContext), i); |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 885 | } |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 886 | |
Owen Anderson | 4a28932 | 2009-07-28 21:22:35 +0000 | [diff] [blame] | 887 | llvm::Value *MaskV = llvm::ConstantVector::get(&Mask[0], Mask.size()); |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 888 | Vec = Builder.CreateShuffleVector(SrcVal, |
Owen Anderson | 03e2050 | 2009-07-30 23:11:26 +0000 | [diff] [blame] | 889 | llvm::UndefValue::get(Vec->getType()), |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 890 | MaskV, "tmp"); |
Mike Stump | b3589f4 | 2009-07-30 22:28:39 +0000 | [diff] [blame] | 891 | } else if (NumDstElts > NumSrcElts) { |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 892 | // Extended the source vector to the same length and then shuffle it |
| 893 | // into the destination. |
| 894 | // FIXME: since we're shuffling with undef, can we just use the indices |
| 895 | // into that? This could be simpler. |
| 896 | llvm::SmallVector<llvm::Constant*, 4> ExtMask; |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 897 | const llvm::Type *Int32Ty = llvm::Type::getInt32Ty(VMContext); |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 898 | unsigned i; |
| 899 | for (i = 0; i != NumSrcElts; ++i) |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 900 | ExtMask.push_back(llvm::ConstantInt::get(Int32Ty, i)); |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 901 | for (; i != NumDstElts; ++i) |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 902 | ExtMask.push_back(llvm::UndefValue::get(Int32Ty)); |
Owen Anderson | 4a28932 | 2009-07-28 21:22:35 +0000 | [diff] [blame] | 903 | llvm::Value *ExtMaskV = llvm::ConstantVector::get(&ExtMask[0], |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 904 | ExtMask.size()); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 905 | llvm::Value *ExtSrcVal = |
Daniel Dunbar | bb76773 | 2009-02-17 18:31:04 +0000 | [diff] [blame] | 906 | Builder.CreateShuffleVector(SrcVal, |
Owen Anderson | 03e2050 | 2009-07-30 23:11:26 +0000 | [diff] [blame] | 907 | llvm::UndefValue::get(SrcVal->getType()), |
Daniel Dunbar | bb76773 | 2009-02-17 18:31:04 +0000 | [diff] [blame] | 908 | ExtMaskV, "tmp"); |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 909 | // build identity |
| 910 | llvm::SmallVector<llvm::Constant*, 4> Mask; |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 911 | for (unsigned i = 0; i != NumDstElts; ++i) |
| 912 | Mask.push_back(llvm::ConstantInt::get(Int32Ty, i)); |
| 913 | |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 914 | // modify when what gets shuffled in |
| 915 | for (unsigned i = 0; i != NumSrcElts; ++i) { |
| 916 | unsigned Idx = getAccessedFieldNo(i, Elts); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 917 | Mask[Idx] = llvm::ConstantInt::get(Int32Ty, i+NumDstElts); |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 918 | } |
Owen Anderson | 4a28932 | 2009-07-28 21:22:35 +0000 | [diff] [blame] | 919 | llvm::Value *MaskV = llvm::ConstantVector::get(&Mask[0], Mask.size()); |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 920 | Vec = Builder.CreateShuffleVector(Vec, ExtSrcVal, MaskV, "tmp"); |
Mike Stump | b3589f4 | 2009-07-30 22:28:39 +0000 | [diff] [blame] | 921 | } else { |
Nate Begeman | 6fe7c8a | 2009-01-18 06:42:49 +0000 | [diff] [blame] | 922 | // We should never shorten the vector |
| 923 | assert(0 && "unexpected shorten vector length"); |
Chris Lattner | 7e6b51b | 2007-08-03 16:37:04 +0000 | [diff] [blame] | 924 | } |
| 925 | } else { |
| 926 | // If the Src is a scalar (not a vector) it must be updating one element. |
Dan Gohman | 4f8d123 | 2008-05-22 00:50:06 +0000 | [diff] [blame] | 927 | unsigned InIdx = getAccessedFieldNo(0, Elts); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 928 | const llvm::Type *Int32Ty = llvm::Type::getInt32Ty(VMContext); |
| 929 | llvm::Value *Elt = llvm::ConstantInt::get(Int32Ty, InIdx); |
Chris Lattner | 017d6aa | 2007-08-03 16:28:33 +0000 | [diff] [blame] | 930 | Vec = Builder.CreateInsertElement(Vec, SrcVal, Elt, "tmp"); |
Chris Lattner | 017d6aa | 2007-08-03 16:28:33 +0000 | [diff] [blame] | 931 | } |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 932 | |
Eli Friedman | 1e692ac | 2008-06-13 23:01:12 +0000 | [diff] [blame] | 933 | Builder.CreateStore(Vec, Dst.getExtVectorAddr(), Dst.isVolatileQualified()); |
Chris Lattner | 017d6aa | 2007-08-03 16:28:33 +0000 | [diff] [blame] | 934 | } |
| 935 | |
Fariborz Jahanian | b123ea3 | 2009-09-16 21:37:16 +0000 | [diff] [blame] | 936 | // setObjCGCLValueClass - sets class of he lvalue for the purpose of |
| 937 | // generating write-barries API. It is currently a global, ivar, |
| 938 | // or neither. |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 939 | static void setObjCGCLValueClass(const ASTContext &Ctx, const Expr *E, |
| 940 | LValue &LV) { |
Fariborz Jahanian | b924259 | 2009-09-21 23:03:37 +0000 | [diff] [blame] | 941 | if (Ctx.getLangOptions().getGCMode() == LangOptions::NonGC) |
Fariborz Jahanian | b123ea3 | 2009-09-16 21:37:16 +0000 | [diff] [blame] | 942 | return; |
| 943 | |
Fariborz Jahanian | dbf3cfd | 2009-09-16 23:11:23 +0000 | [diff] [blame] | 944 | if (isa<ObjCIvarRefExpr>(E)) { |
| 945 | LV.SetObjCIvar(LV, true); |
Fariborz Jahanian | 6c7a1f3 | 2009-09-24 22:25:38 +0000 | [diff] [blame] | 946 | ObjCIvarRefExpr *Exp = cast<ObjCIvarRefExpr>(const_cast<Expr*>(E)); |
| 947 | LV.setBaseIvarExp(Exp->getBase()); |
Fariborz Jahanian | fd02ed7 | 2009-09-21 18:54:29 +0000 | [diff] [blame] | 948 | LV.SetObjCArray(LV, E->getType()->isArrayType()); |
Fariborz Jahanian | dbf3cfd | 2009-09-16 23:11:23 +0000 | [diff] [blame] | 949 | return; |
| 950 | } |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 951 | |
Fariborz Jahanian | b123ea3 | 2009-09-16 21:37:16 +0000 | [diff] [blame] | 952 | if (const DeclRefExpr *Exp = dyn_cast<DeclRefExpr>(E)) { |
| 953 | if (const VarDecl *VD = dyn_cast<VarDecl>(Exp->getDecl())) { |
| 954 | if ((VD->isBlockVarDecl() && !VD->hasLocalStorage()) || |
| 955 | VD->isFileVarDecl()) |
| 956 | LV.SetGlobalObjCRef(LV, true); |
| 957 | } |
Fariborz Jahanian | fd02ed7 | 2009-09-21 18:54:29 +0000 | [diff] [blame] | 958 | LV.SetObjCArray(LV, E->getType()->isArrayType()); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 959 | return; |
Fariborz Jahanian | b123ea3 | 2009-09-16 21:37:16 +0000 | [diff] [blame] | 960 | } |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 961 | |
| 962 | if (const UnaryOperator *Exp = dyn_cast<UnaryOperator>(E)) { |
Fariborz Jahanian | b123ea3 | 2009-09-16 21:37:16 +0000 | [diff] [blame] | 963 | setObjCGCLValueClass(Ctx, Exp->getSubExpr(), LV); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 964 | return; |
| 965 | } |
| 966 | |
| 967 | if (const ParenExpr *Exp = dyn_cast<ParenExpr>(E)) { |
Fariborz Jahanian | b123ea3 | 2009-09-16 21:37:16 +0000 | [diff] [blame] | 968 | setObjCGCLValueClass(Ctx, Exp->getSubExpr(), LV); |
Fariborz Jahanian | 75b08f1 | 2009-09-30 17:10:29 +0000 | [diff] [blame] | 969 | if (LV.isObjCIvar()) { |
| 970 | // If cast is to a structure pointer, follow gcc's behavior and make it |
| 971 | // a non-ivar write-barrier. |
| 972 | QualType ExpTy = E->getType(); |
| 973 | if (ExpTy->isPointerType()) |
| 974 | ExpTy = ExpTy->getAs<PointerType>()->getPointeeType(); |
| 975 | if (ExpTy->isRecordType()) |
| 976 | LV.SetObjCIvar(LV, false); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 977 | } |
| 978 | return; |
Fariborz Jahanian | 75b08f1 | 2009-09-30 17:10:29 +0000 | [diff] [blame] | 979 | } |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 980 | if (const ImplicitCastExpr *Exp = dyn_cast<ImplicitCastExpr>(E)) { |
Fariborz Jahanian | b123ea3 | 2009-09-16 21:37:16 +0000 | [diff] [blame] | 981 | setObjCGCLValueClass(Ctx, Exp->getSubExpr(), LV); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 982 | return; |
| 983 | } |
| 984 | |
| 985 | if (const CStyleCastExpr *Exp = dyn_cast<CStyleCastExpr>(E)) { |
Fariborz Jahanian | b123ea3 | 2009-09-16 21:37:16 +0000 | [diff] [blame] | 986 | setObjCGCLValueClass(Ctx, Exp->getSubExpr(), LV); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 987 | return; |
| 988 | } |
| 989 | |
| 990 | if (const ArraySubscriptExpr *Exp = dyn_cast<ArraySubscriptExpr>(E)) { |
Fariborz Jahanian | b123ea3 | 2009-09-16 21:37:16 +0000 | [diff] [blame] | 991 | setObjCGCLValueClass(Ctx, Exp->getBase(), LV); |
Fariborz Jahanian | fd02ed7 | 2009-09-21 18:54:29 +0000 | [diff] [blame] | 992 | if (LV.isObjCIvar() && !LV.isObjCArray()) |
Fariborz Jahanian | 1c1afc4 | 2009-09-18 00:04:00 +0000 | [diff] [blame] | 993 | // Using array syntax to assigning to what an ivar points to is not |
| 994 | // same as assigning to the ivar itself. {id *Names;} Names[i] = 0; |
| 995 | LV.SetObjCIvar(LV, false); |
Fariborz Jahanian | fd02ed7 | 2009-09-21 18:54:29 +0000 | [diff] [blame] | 996 | else if (LV.isGlobalObjCRef() && !LV.isObjCArray()) |
| 997 | // Using array syntax to assigning to what global points to is not |
| 998 | // same as assigning to the global itself. {id *G;} G[i] = 0; |
| 999 | LV.SetGlobalObjCRef(LV, false); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1000 | return; |
Fariborz Jahanian | 1c1afc4 | 2009-09-18 00:04:00 +0000 | [diff] [blame] | 1001 | } |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1002 | |
| 1003 | if (const MemberExpr *Exp = dyn_cast<MemberExpr>(E)) { |
Fariborz Jahanian | b123ea3 | 2009-09-16 21:37:16 +0000 | [diff] [blame] | 1004 | setObjCGCLValueClass(Ctx, Exp->getBase(), LV); |
Fariborz Jahanian | 1c1afc4 | 2009-09-18 00:04:00 +0000 | [diff] [blame] | 1005 | // We don't know if member is an 'ivar', but this flag is looked at |
| 1006 | // only in the context of LV.isObjCIvar(). |
Fariborz Jahanian | fd02ed7 | 2009-09-21 18:54:29 +0000 | [diff] [blame] | 1007 | LV.SetObjCArray(LV, E->getType()->isArrayType()); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1008 | return; |
Fariborz Jahanian | b123ea3 | 2009-09-16 21:37:16 +0000 | [diff] [blame] | 1009 | } |
| 1010 | } |
| 1011 | |
Anders Carlsson | ce53f7d | 2009-11-07 23:06:58 +0000 | [diff] [blame] | 1012 | static LValue EmitGlobalVarDeclLValue(CodeGenFunction &CGF, |
| 1013 | const Expr *E, const VarDecl *VD) { |
Daniel Dunbar | d2113f2 | 2009-11-08 09:46:46 +0000 | [diff] [blame] | 1014 | assert((VD->hasExternalStorage() || VD->isFileVarDecl()) && |
Anders Carlsson | ce53f7d | 2009-11-07 23:06:58 +0000 | [diff] [blame] | 1015 | "Var decl must have external storage or be a file var decl!"); |
| 1016 | |
| 1017 | llvm::Value *V = CGF.CGM.GetAddrOfGlobalVar(VD); |
| 1018 | if (VD->getType()->isReferenceType()) |
| 1019 | V = CGF.Builder.CreateLoad(V, "tmp"); |
| 1020 | LValue LV = LValue::MakeAddr(V, CGF.MakeQualifiers(E->getType())); |
| 1021 | setObjCGCLValueClass(CGF.getContext(), E, LV); |
| 1022 | return LV; |
| 1023 | } |
| 1024 | |
Eli Friedman | 9a14630 | 2009-11-26 06:08:14 +0000 | [diff] [blame] | 1025 | static LValue EmitFunctionDeclLValue(CodeGenFunction &CGF, |
| 1026 | const Expr *E, const FunctionDecl *FD) { |
| 1027 | llvm::Value* V = CGF.CGM.GetAddrOfFunction(FD); |
| 1028 | if (!FD->hasPrototype()) { |
| 1029 | if (const FunctionProtoType *Proto = |
| 1030 | FD->getType()->getAs<FunctionProtoType>()) { |
| 1031 | // Ugly case: for a K&R-style definition, the type of the definition |
| 1032 | // isn't the same as the type of a use. Correct for this with a |
| 1033 | // bitcast. |
| 1034 | QualType NoProtoType = |
| 1035 | CGF.getContext().getFunctionNoProtoType(Proto->getResultType()); |
| 1036 | NoProtoType = CGF.getContext().getPointerType(NoProtoType); |
| 1037 | V = CGF.Builder.CreateBitCast(V, CGF.ConvertType(NoProtoType), "tmp"); |
| 1038 | } |
| 1039 | } |
| 1040 | return LValue::MakeAddr(V, CGF.MakeQualifiers(E->getType())); |
| 1041 | } |
| 1042 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1043 | LValue CodeGenFunction::EmitDeclRefLValue(const DeclRefExpr *E) { |
Anders Carlsson | 1e74c4f | 2009-11-07 22:53:10 +0000 | [diff] [blame] | 1044 | const NamedDecl *ND = E->getDecl(); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1045 | |
Anders Carlsson | 1e74c4f | 2009-11-07 22:53:10 +0000 | [diff] [blame] | 1046 | if (const VarDecl *VD = dyn_cast<VarDecl>(ND)) { |
Anders Carlsson | 1e74c4f | 2009-11-07 22:53:10 +0000 | [diff] [blame] | 1047 | |
| 1048 | // Check if this is a global variable. |
Anders Carlsson | ce53f7d | 2009-11-07 23:06:58 +0000 | [diff] [blame] | 1049 | if (VD->hasExternalStorage() || VD->isFileVarDecl()) |
| 1050 | return EmitGlobalVarDeclLValue(*this, E, VD); |
Anders Carlsson | 0bc7049 | 2009-11-07 22:46:42 +0000 | [diff] [blame] | 1051 | |
| 1052 | bool NonGCable = VD->hasLocalStorage() && !VD->hasAttr<BlocksAttr>(); |
| 1053 | |
| 1054 | llvm::Value *V = LocalDeclMap[VD]; |
| 1055 | assert(V && "DeclRefExpr not entered in LocalDeclMap?"); |
| 1056 | |
| 1057 | Qualifiers Quals = MakeQualifiers(E->getType()); |
| 1058 | // local variables do not get their gc attribute set. |
| 1059 | // local static? |
| 1060 | if (NonGCable) Quals.removeObjCGCAttr(); |
| 1061 | |
| 1062 | if (VD->hasAttr<BlocksAttr>()) { |
| 1063 | V = Builder.CreateStructGEP(V, 1, "forwarding"); |
Daniel Dunbar | 2da84ff | 2009-11-29 21:23:36 +0000 | [diff] [blame] | 1064 | V = Builder.CreateLoad(V); |
Anders Carlsson | 0bc7049 | 2009-11-07 22:46:42 +0000 | [diff] [blame] | 1065 | V = Builder.CreateStructGEP(V, getByRefValueLLVMField(VD), |
| 1066 | VD->getNameAsString()); |
| 1067 | } |
| 1068 | if (VD->getType()->isReferenceType()) |
| 1069 | V = Builder.CreateLoad(V, "tmp"); |
Anders Carlsson | ce53f7d | 2009-11-07 23:06:58 +0000 | [diff] [blame] | 1070 | LValue LV = LValue::MakeAddr(V, Quals); |
Anders Carlsson | 0bc7049 | 2009-11-07 22:46:42 +0000 | [diff] [blame] | 1071 | LValue::SetObjCNonGC(LV, NonGCable); |
Fariborz Jahanian | b123ea3 | 2009-09-16 21:37:16 +0000 | [diff] [blame] | 1072 | setObjCGCLValueClass(getContext(), E, LV); |
Fariborz Jahanian | 2682d8b | 2008-11-20 00:15:42 +0000 | [diff] [blame] | 1073 | return LV; |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1074 | } |
| 1075 | |
Eli Friedman | 9a14630 | 2009-11-26 06:08:14 +0000 | [diff] [blame] | 1076 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) |
| 1077 | return EmitFunctionDeclLValue(*this, E, FD); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1078 | |
Anders Carlsson | 45147d0 | 2010-02-02 03:37:46 +0000 | [diff] [blame] | 1079 | // FIXME: the qualifier check does not seem sufficient here |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1080 | if (E->getQualifier()) { |
Anders Carlsson | 45147d0 | 2010-02-02 03:37:46 +0000 | [diff] [blame] | 1081 | const FieldDecl *FD = cast<FieldDecl>(ND); |
| 1082 | llvm::Value *V = CGM.EmitPointerToDataMember(FD); |
| 1083 | |
| 1084 | return LValue::MakeAddr(V, MakeQualifiers(FD->getType())); |
Chris Lattner | 4111024 | 2008-06-17 18:05:57 +0000 | [diff] [blame] | 1085 | } |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1086 | |
Anders Carlsson | 1e74c4f | 2009-11-07 22:53:10 +0000 | [diff] [blame] | 1087 | assert(false && "Unhandled DeclRefExpr"); |
| 1088 | |
| 1089 | // an invalid LValue, but the assert will |
| 1090 | // ensure that this point is never reached. |
Chris Lattner | b1776cb | 2007-09-16 19:23:47 +0000 | [diff] [blame] | 1091 | return LValue(); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1092 | } |
| 1093 | |
Mike Stump | a99038c | 2009-02-28 09:07:16 +0000 | [diff] [blame] | 1094 | LValue CodeGenFunction::EmitBlockDeclRefLValue(const BlockDeclRefExpr *E) { |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1095 | return LValue::MakeAddr(GetAddrOfBlockDecl(E), MakeQualifiers(E->getType())); |
Mike Stump | a99038c | 2009-02-28 09:07:16 +0000 | [diff] [blame] | 1096 | } |
| 1097 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1098 | LValue CodeGenFunction::EmitUnaryOpLValue(const UnaryOperator *E) { |
| 1099 | // __extension__ doesn't affect lvalue-ness. |
| 1100 | if (E->getOpcode() == UnaryOperator::Extension) |
| 1101 | return EmitLValue(E->getSubExpr()); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1102 | |
Chris Lattner | 9619662 | 2008-07-26 22:37:01 +0000 | [diff] [blame] | 1103 | QualType ExprTy = getContext().getCanonicalType(E->getSubExpr()->getType()); |
Chris Lattner | 7da36f6 | 2007-10-30 22:53:42 +0000 | [diff] [blame] | 1104 | switch (E->getOpcode()) { |
| 1105 | default: assert(0 && "Unknown unary operator lvalue!"); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1106 | case UnaryOperator::Deref: { |
| 1107 | QualType T = E->getSubExpr()->getType()->getPointeeType(); |
| 1108 | assert(!T.isNull() && "CodeGenFunction::EmitUnaryOpLValue: Illegal type"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1109 | |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1110 | Qualifiers Quals = MakeQualifiers(T); |
| 1111 | Quals.setAddressSpace(ExprTy.getAddressSpace()); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1112 | |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1113 | LValue LV = LValue::MakeAddr(EmitScalarExpr(E->getSubExpr()), Quals); |
| 1114 | // We should not generate __weak write barrier on indirect reference |
| 1115 | // of a pointer to object; as in void foo (__weak id *param); *param = 0; |
| 1116 | // But, we continue to generate __strong write barrier on indirect write |
| 1117 | // into a pointer to object. |
| 1118 | if (getContext().getLangOptions().ObjC1 && |
| 1119 | getContext().getLangOptions().getGCMode() != LangOptions::NonGC && |
| 1120 | LV.isObjCWeak()) |
| 1121 | LValue::SetObjCNonGC(LV, !E->isOBJCGCCandidate(getContext())); |
| 1122 | return LV; |
| 1123 | } |
Chris Lattner | 7da36f6 | 2007-10-30 22:53:42 +0000 | [diff] [blame] | 1124 | case UnaryOperator::Real: |
Eli Friedman | e401cd5 | 2009-11-09 04:20:47 +0000 | [diff] [blame] | 1125 | case UnaryOperator::Imag: { |
Chris Lattner | 7da36f6 | 2007-10-30 22:53:42 +0000 | [diff] [blame] | 1126 | LValue LV = EmitLValue(E->getSubExpr()); |
Chris Lattner | 36b6a0a | 2008-03-19 05:19:41 +0000 | [diff] [blame] | 1127 | unsigned Idx = E->getOpcode() == UnaryOperator::Imag; |
| 1128 | return LValue::MakeAddr(Builder.CreateStructGEP(LV.getAddress(), |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 1129 | Idx, "idx"), |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1130 | MakeQualifiers(ExprTy)); |
Chris Lattner | 7da36f6 | 2007-10-30 22:53:42 +0000 | [diff] [blame] | 1131 | } |
Eli Friedman | e401cd5 | 2009-11-09 04:20:47 +0000 | [diff] [blame] | 1132 | case UnaryOperator::PreInc: |
Chris Lattner | 197a338 | 2010-01-09 21:44:40 +0000 | [diff] [blame] | 1133 | case UnaryOperator::PreDec: { |
| 1134 | LValue LV = EmitLValue(E->getSubExpr()); |
| 1135 | bool isInc = E->getOpcode() == UnaryOperator::PreInc; |
| 1136 | |
| 1137 | if (E->getType()->isAnyComplexType()) |
| 1138 | EmitComplexPrePostIncDec(E, LV, isInc, true/*isPre*/); |
| 1139 | else |
| 1140 | EmitScalarPrePostIncDec(E, LV, isInc, true/*isPre*/); |
| 1141 | return LV; |
| 1142 | } |
Eli Friedman | e401cd5 | 2009-11-09 04:20:47 +0000 | [diff] [blame] | 1143 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1144 | } |
| 1145 | |
| 1146 | LValue CodeGenFunction::EmitStringLiteralLValue(const StringLiteral *E) { |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1147 | return LValue::MakeAddr(CGM.GetAddrOfConstantStringFromLiteral(E), |
| 1148 | Qualifiers()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1149 | } |
| 1150 | |
Chris Lattner | eaf2bb8 | 2009-02-24 22:18:39 +0000 | [diff] [blame] | 1151 | LValue CodeGenFunction::EmitObjCEncodeExprLValue(const ObjCEncodeExpr *E) { |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1152 | return LValue::MakeAddr(CGM.GetAddrOfConstantStringFromObjCEncode(E), |
| 1153 | Qualifiers()); |
Chris Lattner | eaf2bb8 | 2009-02-24 22:18:39 +0000 | [diff] [blame] | 1154 | } |
| 1155 | |
| 1156 | |
Daniel Dunbar | 662b71e | 2008-10-17 21:58:32 +0000 | [diff] [blame] | 1157 | LValue CodeGenFunction::EmitPredefinedFunctionName(unsigned Type) { |
Anders Carlsson | 2274266 | 2007-07-21 05:21:51 +0000 | [diff] [blame] | 1158 | std::string GlobalVarName; |
Daniel Dunbar | 662b71e | 2008-10-17 21:58:32 +0000 | [diff] [blame] | 1159 | |
| 1160 | switch (Type) { |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1161 | default: assert(0 && "Invalid type"); |
Chris Lattner | eaf2bb8 | 2009-02-24 22:18:39 +0000 | [diff] [blame] | 1162 | case PredefinedExpr::Func: |
| 1163 | GlobalVarName = "__func__."; |
| 1164 | break; |
| 1165 | case PredefinedExpr::Function: |
| 1166 | GlobalVarName = "__FUNCTION__."; |
| 1167 | break; |
| 1168 | case PredefinedExpr::PrettyFunction: |
Chris Lattner | eaf2bb8 | 2009-02-24 22:18:39 +0000 | [diff] [blame] | 1169 | GlobalVarName = "__PRETTY_FUNCTION__."; |
| 1170 | break; |
Anders Carlsson | 2274266 | 2007-07-21 05:21:51 +0000 | [diff] [blame] | 1171 | } |
Daniel Dunbar | 662b71e | 2008-10-17 21:58:32 +0000 | [diff] [blame] | 1172 | |
Daniel Dunbar | 0a23d76 | 2009-09-12 23:06:21 +0000 | [diff] [blame] | 1173 | llvm::StringRef FnName = CurFn->getName(); |
| 1174 | if (FnName.startswith("\01")) |
| 1175 | FnName = FnName.substr(1); |
| 1176 | GlobalVarName += FnName; |
| 1177 | |
Anders Carlsson | 3a082d8 | 2009-09-08 18:24:21 +0000 | [diff] [blame] | 1178 | std::string FunctionName = |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1179 | PredefinedExpr::ComputeName(getContext(), (PredefinedExpr::IdentType)Type, |
Anders Carlsson | 3a082d8 | 2009-09-08 18:24:21 +0000 | [diff] [blame] | 1180 | CurCodeDecl); |
Daniel Dunbar | 662b71e | 2008-10-17 21:58:32 +0000 | [diff] [blame] | 1181 | |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1182 | llvm::Constant *C = |
Daniel Dunbar | 662b71e | 2008-10-17 21:58:32 +0000 | [diff] [blame] | 1183 | CGM.GetAddrOfConstantCString(FunctionName, GlobalVarName.c_str()); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1184 | return LValue::MakeAddr(C, Qualifiers()); |
Daniel Dunbar | 662b71e | 2008-10-17 21:58:32 +0000 | [diff] [blame] | 1185 | } |
| 1186 | |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1187 | LValue CodeGenFunction::EmitPredefinedLValue(const PredefinedExpr *E) { |
Daniel Dunbar | 662b71e | 2008-10-17 21:58:32 +0000 | [diff] [blame] | 1188 | switch (E->getIdentType()) { |
| 1189 | default: |
| 1190 | return EmitUnsupportedLValue(E, "predefined expression"); |
| 1191 | case PredefinedExpr::Func: |
| 1192 | case PredefinedExpr::Function: |
| 1193 | case PredefinedExpr::PrettyFunction: |
| 1194 | return EmitPredefinedFunctionName(E->getIdentType()); |
| 1195 | } |
Anders Carlsson | 2274266 | 2007-07-21 05:21:51 +0000 | [diff] [blame] | 1196 | } |
| 1197 | |
Mike Stump | d8af360 | 2009-12-15 01:22:35 +0000 | [diff] [blame] | 1198 | llvm::BasicBlock *CodeGenFunction::getTrapBB() { |
Mike Stump | 4151344 | 2009-12-15 00:59:40 +0000 | [diff] [blame] | 1199 | const CodeGenOptions &GCO = CGM.getCodeGenOpts(); |
| 1200 | |
| 1201 | // If we are not optimzing, don't collapse all calls to trap in the function |
| 1202 | // to the same call, that way, in the debugger they can see which operation |
| 1203 | // did in fact fail. If we are optimizing, we collpase all call to trap down |
| 1204 | // to just one per function to save on codesize. |
| 1205 | if (GCO.OptimizationLevel |
| 1206 | && TrapBB) |
Mike Stump | 15037ca | 2009-12-15 00:35:12 +0000 | [diff] [blame] | 1207 | return TrapBB; |
Mike Stump | 9c276ae | 2009-12-12 01:27:46 +0000 | [diff] [blame] | 1208 | |
| 1209 | llvm::BasicBlock *Cont = 0; |
| 1210 | if (HaveInsertPoint()) { |
| 1211 | Cont = createBasicBlock("cont"); |
| 1212 | EmitBranch(Cont); |
| 1213 | } |
Mike Stump | 15037ca | 2009-12-15 00:35:12 +0000 | [diff] [blame] | 1214 | TrapBB = createBasicBlock("trap"); |
| 1215 | EmitBlock(TrapBB); |
| 1216 | |
| 1217 | llvm::Value *F = CGM.getIntrinsic(llvm::Intrinsic::trap, 0, 0); |
| 1218 | llvm::CallInst *TrapCall = Builder.CreateCall(F); |
| 1219 | TrapCall->setDoesNotReturn(); |
| 1220 | TrapCall->setDoesNotThrow(); |
Mike Stump | 9c276ae | 2009-12-12 01:27:46 +0000 | [diff] [blame] | 1221 | Builder.CreateUnreachable(); |
| 1222 | |
| 1223 | if (Cont) |
| 1224 | EmitBlock(Cont); |
Mike Stump | 15037ca | 2009-12-15 00:35:12 +0000 | [diff] [blame] | 1225 | return TrapBB; |
Mike Stump | 9c276ae | 2009-12-12 01:27:46 +0000 | [diff] [blame] | 1226 | } |
| 1227 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1228 | LValue CodeGenFunction::EmitArraySubscriptExpr(const ArraySubscriptExpr *E) { |
Ted Kremenek | 2324512 | 2007-08-20 16:18:38 +0000 | [diff] [blame] | 1229 | // The index must always be an integer, which is not an aggregate. Emit it. |
Chris Lattner | 7f02f72 | 2007-08-24 05:35:26 +0000 | [diff] [blame] | 1230 | llvm::Value *Idx = EmitScalarExpr(E->getIdx()); |
Eli Friedman | 61d004a | 2009-06-06 19:09:26 +0000 | [diff] [blame] | 1231 | QualType IdxTy = E->getIdx()->getType(); |
| 1232 | bool IdxSigned = IdxTy->isSignedIntegerType(); |
| 1233 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1234 | // If the base is a vector type, then we are forming a vector element lvalue |
| 1235 | // with this subscript. |
Eli Friedman | 1e692ac | 2008-06-13 23:01:12 +0000 | [diff] [blame] | 1236 | if (E->getBase()->getType()->isVectorType()) { |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1237 | // Emit the vector as an lvalue to get its address. |
Eli Friedman | 1e692ac | 2008-06-13 23:01:12 +0000 | [diff] [blame] | 1238 | LValue LHS = EmitLValue(E->getBase()); |
Ted Kremenek | 2324512 | 2007-08-20 16:18:38 +0000 | [diff] [blame] | 1239 | assert(LHS.isSimple() && "Can only subscript lvalue vectors here!"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1240 | Idx = Builder.CreateIntCast(Idx, |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 1241 | llvm::Type::getInt32Ty(VMContext), IdxSigned, "vidx"); |
Eli Friedman | 1e692ac | 2008-06-13 23:01:12 +0000 | [diff] [blame] | 1242 | return LValue::MakeVectorElt(LHS.getAddress(), Idx, |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1243 | E->getBase()->getType().getCVRQualifiers()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1244 | } |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1245 | |
Ted Kremenek | 2324512 | 2007-08-20 16:18:38 +0000 | [diff] [blame] | 1246 | // The base must be a pointer, which is not an aggregate. Emit it. |
Chris Lattner | 7f02f72 | 2007-08-24 05:35:26 +0000 | [diff] [blame] | 1247 | llvm::Value *Base = EmitScalarExpr(E->getBase()); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1248 | |
Ted Kremenek | 2324512 | 2007-08-20 16:18:38 +0000 | [diff] [blame] | 1249 | // Extend or truncate the index type to 32 or 64-bits. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1250 | unsigned IdxBitwidth = cast<llvm::IntegerType>(Idx->getType())->getBitWidth(); |
Sanjiv Gupta | 7cabee5 | 2009-04-24 02:40:57 +0000 | [diff] [blame] | 1251 | if (IdxBitwidth != LLVMPointerWidth) |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 1252 | Idx = Builder.CreateIntCast(Idx, |
| 1253 | llvm::IntegerType::get(VMContext, LLVMPointerWidth), |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1254 | IdxSigned, "idxprom"); |
| 1255 | |
Mike Stump | b14e62d | 2009-12-16 02:57:00 +0000 | [diff] [blame] | 1256 | // FIXME: As llvm implements the object size checking, this can come out. |
Mike Stump | 9c276ae | 2009-12-12 01:27:46 +0000 | [diff] [blame] | 1257 | if (CatchUndefined) { |
Mike Stump | b14e62d | 2009-12-16 02:57:00 +0000 | [diff] [blame] | 1258 | if (const ImplicitCastExpr *ICE=dyn_cast<ImplicitCastExpr>(E->getBase())) { |
Mike Stump | 9c276ae | 2009-12-12 01:27:46 +0000 | [diff] [blame] | 1259 | if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(ICE->getSubExpr())) { |
| 1260 | if (ICE->getCastKind() == CastExpr::CK_ArrayToPointerDecay) { |
| 1261 | if (const ConstantArrayType *CAT |
| 1262 | = getContext().getAsConstantArrayType(DRE->getType())) { |
| 1263 | llvm::APInt Size = CAT->getSize(); |
| 1264 | llvm::BasicBlock *Cont = createBasicBlock("cont"); |
Mike Stump | 750c85e | 2009-12-14 22:14:31 +0000 | [diff] [blame] | 1265 | Builder.CreateCondBr(Builder.CreateICmpULE(Idx, |
Mike Stump | 9c276ae | 2009-12-12 01:27:46 +0000 | [diff] [blame] | 1266 | llvm::ConstantInt::get(Idx->getType(), Size)), |
Mike Stump | 15037ca | 2009-12-15 00:35:12 +0000 | [diff] [blame] | 1267 | Cont, getTrapBB()); |
Mike Stump | 96a063a | 2009-12-14 20:52:00 +0000 | [diff] [blame] | 1268 | EmitBlock(Cont); |
Mike Stump | 9c276ae | 2009-12-12 01:27:46 +0000 | [diff] [blame] | 1269 | } |
| 1270 | } |
| 1271 | } |
| 1272 | } |
| 1273 | } |
| 1274 | |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1275 | // We know that the pointer points to a type of the correct size, unless the |
| 1276 | // size is a VLA or Objective-C interface. |
Daniel Dunbar | 2a86625 | 2009-04-25 05:08:32 +0000 | [diff] [blame] | 1277 | llvm::Value *Address = 0; |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1278 | if (const VariableArrayType *VAT = |
Anders Carlsson | 8b33c08 | 2008-12-21 00:11:23 +0000 | [diff] [blame] | 1279 | getContext().getAsVariableArrayType(E->getType())) { |
Chris Lattner | 881eb9c | 2009-08-14 23:43:22 +0000 | [diff] [blame] | 1280 | llvm::Value *VLASize = GetVLASize(VAT); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1281 | |
Anders Carlsson | 8b33c08 | 2008-12-21 00:11:23 +0000 | [diff] [blame] | 1282 | Idx = Builder.CreateMul(Idx, VLASize); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1283 | |
Anders Carlsson | 6183a99 | 2008-12-21 03:44:36 +0000 | [diff] [blame] | 1284 | QualType BaseType = getContext().getBaseElementType(VAT); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1285 | |
Ken Dyck | 199c3d6 | 2010-01-11 17:06:35 +0000 | [diff] [blame] | 1286 | CharUnits BaseTypeSize = getContext().getTypeSizeInChars(BaseType); |
Anders Carlsson | 8b33c08 | 2008-12-21 00:11:23 +0000 | [diff] [blame] | 1287 | Idx = Builder.CreateUDiv(Idx, |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1288 | llvm::ConstantInt::get(Idx->getType(), |
Ken Dyck | 199c3d6 | 2010-01-11 17:06:35 +0000 | [diff] [blame] | 1289 | BaseTypeSize.getQuantity())); |
Dan Gohman | 664f893 | 2009-08-12 00:33:55 +0000 | [diff] [blame] | 1290 | Address = Builder.CreateInBoundsGEP(Base, Idx, "arrayidx"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1291 | } else if (const ObjCInterfaceType *OIT = |
Daniel Dunbar | 2a86625 | 2009-04-25 05:08:32 +0000 | [diff] [blame] | 1292 | dyn_cast<ObjCInterfaceType>(E->getType())) { |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1293 | llvm::Value *InterfaceSize = |
Owen Anderson | 4a28d5d | 2009-07-24 23:12:58 +0000 | [diff] [blame] | 1294 | llvm::ConstantInt::get(Idx->getType(), |
Ken Dyck | 199c3d6 | 2010-01-11 17:06:35 +0000 | [diff] [blame] | 1295 | getContext().getTypeSizeInChars(OIT).getQuantity()); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1296 | |
Daniel Dunbar | 2a86625 | 2009-04-25 05:08:32 +0000 | [diff] [blame] | 1297 | Idx = Builder.CreateMul(Idx, InterfaceSize); |
| 1298 | |
Benjamin Kramer | 3c0ef8c | 2009-10-13 10:07:13 +0000 | [diff] [blame] | 1299 | const llvm::Type *i8PTy = llvm::Type::getInt8PtrTy(VMContext); |
Dan Gohman | 664f893 | 2009-08-12 00:33:55 +0000 | [diff] [blame] | 1300 | Address = Builder.CreateGEP(Builder.CreateBitCast(Base, i8PTy), |
Daniel Dunbar | 2a86625 | 2009-04-25 05:08:32 +0000 | [diff] [blame] | 1301 | Idx, "arrayidx"); |
| 1302 | Address = Builder.CreateBitCast(Address, Base->getType()); |
| 1303 | } else { |
Dan Gohman | 664f893 | 2009-08-12 00:33:55 +0000 | [diff] [blame] | 1304 | Address = Builder.CreateInBoundsGEP(Base, Idx, "arrayidx"); |
Anders Carlsson | 8b33c08 | 2008-12-21 00:11:23 +0000 | [diff] [blame] | 1305 | } |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1306 | |
Steve Naroff | 14108da | 2009-07-10 23:34:53 +0000 | [diff] [blame] | 1307 | QualType T = E->getBase()->getType()->getPointeeType(); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1308 | assert(!T.isNull() && |
Steve Naroff | 14108da | 2009-07-10 23:34:53 +0000 | [diff] [blame] | 1309 | "CodeGenFunction::EmitArraySubscriptExpr(): Illegal base type"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1310 | |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1311 | Qualifiers Quals = MakeQualifiers(T); |
| 1312 | Quals.setAddressSpace(E->getBase()->getType().getAddressSpace()); |
| 1313 | |
| 1314 | LValue LV = LValue::MakeAddr(Address, Quals); |
Fariborz Jahanian | 643887a | 2009-02-21 23:37:19 +0000 | [diff] [blame] | 1315 | if (getContext().getLangOptions().ObjC1 && |
Fariborz Jahanian | b123ea3 | 2009-09-16 21:37:16 +0000 | [diff] [blame] | 1316 | getContext().getLangOptions().getGCMode() != LangOptions::NonGC) { |
Fariborz Jahanian | 102e390 | 2009-06-01 21:29:32 +0000 | [diff] [blame] | 1317 | LValue::SetObjCNonGC(LV, !E->isOBJCGCCandidate(getContext())); |
Fariborz Jahanian | b123ea3 | 2009-09-16 21:37:16 +0000 | [diff] [blame] | 1318 | setObjCGCLValueClass(getContext(), E, LV); |
| 1319 | } |
Fariborz Jahanian | 643887a | 2009-02-21 23:37:19 +0000 | [diff] [blame] | 1320 | return LV; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1321 | } |
| 1322 | |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1323 | static |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 1324 | llvm::Constant *GenerateConstantVector(llvm::LLVMContext &VMContext, |
| 1325 | llvm::SmallVector<unsigned, 4> &Elts) { |
Chris Lattner | 998eab1 | 2009-12-23 21:31:11 +0000 | [diff] [blame] | 1326 | llvm::SmallVector<llvm::Constant*, 4> CElts; |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1327 | |
Nate Begeman | 3b8d116 | 2008-05-13 21:03:02 +0000 | [diff] [blame] | 1328 | for (unsigned i = 0, e = Elts.size(); i != e; ++i) |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 1329 | CElts.push_back(llvm::ConstantInt::get( |
| 1330 | llvm::Type::getInt32Ty(VMContext), Elts[i])); |
Nate Begeman | 3b8d116 | 2008-05-13 21:03:02 +0000 | [diff] [blame] | 1331 | |
Owen Anderson | 4a28932 | 2009-07-28 21:22:35 +0000 | [diff] [blame] | 1332 | return llvm::ConstantVector::get(&CElts[0], CElts.size()); |
Nate Begeman | 3b8d116 | 2008-05-13 21:03:02 +0000 | [diff] [blame] | 1333 | } |
| 1334 | |
Chris Lattner | 349aaec | 2007-08-02 23:37:31 +0000 | [diff] [blame] | 1335 | LValue CodeGenFunction:: |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 1336 | EmitExtVectorElementExpr(const ExtVectorElementExpr *E) { |
Chris Lattner | 998eab1 | 2009-12-23 21:31:11 +0000 | [diff] [blame] | 1337 | const llvm::Type *Int32Ty = llvm::Type::getInt32Ty(VMContext); |
| 1338 | |
Chris Lattner | 349aaec | 2007-08-02 23:37:31 +0000 | [diff] [blame] | 1339 | // Emit the base vector as an l-value. |
Chris Lattner | 73525de | 2009-02-16 21:11:58 +0000 | [diff] [blame] | 1340 | LValue Base; |
| 1341 | |
| 1342 | // ExtVectorElementExpr's base can either be a vector or pointer to vector. |
Chris Lattner | 998eab1 | 2009-12-23 21:31:11 +0000 | [diff] [blame] | 1343 | if (E->isArrow()) { |
| 1344 | // If it is a pointer to a vector, emit the address and form an lvalue with |
| 1345 | // it. |
Chris Lattner | 2140e90 | 2009-02-16 22:14:05 +0000 | [diff] [blame] | 1346 | llvm::Value *Ptr = EmitScalarExpr(E->getBase()); |
Chris Lattner | 998eab1 | 2009-12-23 21:31:11 +0000 | [diff] [blame] | 1347 | const PointerType *PT = E->getBase()->getType()->getAs<PointerType>(); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1348 | Qualifiers Quals = MakeQualifiers(PT->getPointeeType()); |
| 1349 | Quals.removeObjCGCAttr(); |
| 1350 | Base = LValue::MakeAddr(Ptr, Quals); |
Chris Lattner | 998eab1 | 2009-12-23 21:31:11 +0000 | [diff] [blame] | 1351 | } else if (E->getBase()->isLvalue(getContext()) == Expr::LV_Valid) { |
| 1352 | // Otherwise, if the base is an lvalue ( as in the case of foo.x.x), |
| 1353 | // emit the base as an lvalue. |
| 1354 | assert(E->getBase()->getType()->isVectorType()); |
| 1355 | Base = EmitLValue(E->getBase()); |
| 1356 | } else { |
| 1357 | // Otherwise, the base is a normal rvalue (as in (V+V).x), emit it as such. |
Daniel Dunbar | 302c3c2 | 2010-01-04 18:02:28 +0000 | [diff] [blame] | 1358 | assert(E->getBase()->getType()->getAs<VectorType>() && |
| 1359 | "Result must be a vector"); |
Chris Lattner | 998eab1 | 2009-12-23 21:31:11 +0000 | [diff] [blame] | 1360 | llvm::Value *Vec = EmitScalarExpr(E->getBase()); |
| 1361 | |
Chris Lattner | 0ad57fb | 2009-12-23 21:33:41 +0000 | [diff] [blame] | 1362 | // Store the vector to memory (because LValue wants an address). |
Chris Lattner | 998eab1 | 2009-12-23 21:31:11 +0000 | [diff] [blame] | 1363 | llvm::Value *VecMem =CreateTempAlloca(ConvertType(E->getBase()->getType())); |
| 1364 | Builder.CreateStore(Vec, VecMem); |
Chris Lattner | 0ad57fb | 2009-12-23 21:33:41 +0000 | [diff] [blame] | 1365 | Base = LValue::MakeAddr(VecMem, Qualifiers()); |
Chris Lattner | 998eab1 | 2009-12-23 21:31:11 +0000 | [diff] [blame] | 1366 | } |
| 1367 | |
Nate Begeman | 3b8d116 | 2008-05-13 21:03:02 +0000 | [diff] [blame] | 1368 | // Encode the element access list into a vector of unsigned indices. |
| 1369 | llvm::SmallVector<unsigned, 4> Indices; |
| 1370 | E->getEncodedElementAccess(Indices); |
| 1371 | |
| 1372 | if (Base.isSimple()) { |
Owen Anderson | a1cf15f | 2009-07-14 23:10:40 +0000 | [diff] [blame] | 1373 | llvm::Constant *CV = GenerateConstantVector(VMContext, Indices); |
Eli Friedman | 1e692ac | 2008-06-13 23:01:12 +0000 | [diff] [blame] | 1374 | return LValue::MakeExtVectorElt(Base.getAddress(), CV, |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1375 | Base.getVRQualifiers()); |
Nate Begeman | 3b8d116 | 2008-05-13 21:03:02 +0000 | [diff] [blame] | 1376 | } |
| 1377 | assert(Base.isExtVectorElt() && "Can only subscript lvalue vec elts here!"); |
| 1378 | |
| 1379 | llvm::Constant *BaseElts = Base.getExtVectorElts(); |
| 1380 | llvm::SmallVector<llvm::Constant *, 4> CElts; |
| 1381 | |
| 1382 | for (unsigned i = 0, e = Indices.size(); i != e; ++i) { |
| 1383 | if (isa<llvm::ConstantAggregateZero>(BaseElts)) |
Chris Lattner | 6766586 | 2009-10-28 05:12:07 +0000 | [diff] [blame] | 1384 | CElts.push_back(llvm::ConstantInt::get(Int32Ty, 0)); |
Nate Begeman | 3b8d116 | 2008-05-13 21:03:02 +0000 | [diff] [blame] | 1385 | else |
Chris Lattner | 6766586 | 2009-10-28 05:12:07 +0000 | [diff] [blame] | 1386 | CElts.push_back(cast<llvm::Constant>(BaseElts->getOperand(Indices[i]))); |
Nate Begeman | 3b8d116 | 2008-05-13 21:03:02 +0000 | [diff] [blame] | 1387 | } |
Owen Anderson | 4a28932 | 2009-07-28 21:22:35 +0000 | [diff] [blame] | 1388 | llvm::Constant *CV = llvm::ConstantVector::get(&CElts[0], CElts.size()); |
Eli Friedman | 1e692ac | 2008-06-13 23:01:12 +0000 | [diff] [blame] | 1389 | return LValue::MakeExtVectorElt(Base.getExtVectorAddr(), CV, |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1390 | Base.getVRQualifiers()); |
Chris Lattner | 349aaec | 2007-08-02 23:37:31 +0000 | [diff] [blame] | 1391 | } |
| 1392 | |
Devang Patel | b9b00ad | 2007-10-23 20:28:39 +0000 | [diff] [blame] | 1393 | LValue CodeGenFunction::EmitMemberExpr(const MemberExpr *E) { |
Fariborz Jahanian | 4f676ed | 2009-02-21 00:30:43 +0000 | [diff] [blame] | 1394 | bool isNonGC = false; |
Devang Patel | 126a856 | 2007-10-24 22:26:28 +0000 | [diff] [blame] | 1395 | Expr *BaseExpr = E->getBase(); |
Devang Patel | 126a856 | 2007-10-24 22:26:28 +0000 | [diff] [blame] | 1396 | llvm::Value *BaseValue = NULL; |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1397 | Qualifiers BaseQuals; |
Eli Friedman | 1e692ac | 2008-06-13 23:01:12 +0000 | [diff] [blame] | 1398 | |
Chris Lattner | 12f65f6 | 2007-12-02 18:52:07 +0000 | [diff] [blame] | 1399 | // If this is s.x, emit s as an lvalue. If it is s->x, emit s as a scalar. |
Devang Patel | fe2419a | 2007-12-11 21:33:16 +0000 | [diff] [blame] | 1400 | if (E->isArrow()) { |
Devang Patel | 0a96118 | 2007-10-26 18:15:21 +0000 | [diff] [blame] | 1401 | BaseValue = EmitScalarExpr(BaseExpr); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1402 | const PointerType *PTy = |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 1403 | BaseExpr->getType()->getAs<PointerType>(); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1404 | BaseQuals = PTy->getPointeeType().getQualifiers(); |
Fariborz Jahanian | d2e1eb0 | 2009-09-01 17:02:21 +0000 | [diff] [blame] | 1405 | } else if (isa<ObjCPropertyRefExpr>(BaseExpr->IgnoreParens()) || |
| 1406 | isa<ObjCImplicitSetterGetterRefExpr>( |
| 1407 | BaseExpr->IgnoreParens())) { |
Fariborz Jahanian | 35c3329 | 2009-01-12 23:27:26 +0000 | [diff] [blame] | 1408 | RValue RV = EmitObjCPropertyGet(BaseExpr); |
| 1409 | BaseValue = RV.getAggregateAddr(); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1410 | BaseQuals = BaseExpr->getType().getQualifiers(); |
Chris Lattner | 1bd885e | 2009-02-16 22:25:49 +0000 | [diff] [blame] | 1411 | } else { |
Chris Lattner | 12f65f6 | 2007-12-02 18:52:07 +0000 | [diff] [blame] | 1412 | LValue BaseLV = EmitLValue(BaseExpr); |
Fariborz Jahanian | 4f676ed | 2009-02-21 00:30:43 +0000 | [diff] [blame] | 1413 | if (BaseLV.isNonGC()) |
| 1414 | isNonGC = true; |
Chris Lattner | 12f65f6 | 2007-12-02 18:52:07 +0000 | [diff] [blame] | 1415 | // FIXME: this isn't right for bitfields. |
| 1416 | BaseValue = BaseLV.getAddress(); |
Fariborz Jahanian | a91d6a6 | 2009-07-29 00:44:13 +0000 | [diff] [blame] | 1417 | QualType BaseTy = BaseExpr->getType(); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1418 | BaseQuals = BaseTy.getQualifiers(); |
Chris Lattner | 12f65f6 | 2007-12-02 18:52:07 +0000 | [diff] [blame] | 1419 | } |
Devang Patel | b9b00ad | 2007-10-23 20:28:39 +0000 | [diff] [blame] | 1420 | |
Anders Carlsson | ce53f7d | 2009-11-07 23:06:58 +0000 | [diff] [blame] | 1421 | NamedDecl *ND = E->getMemberDecl(); |
| 1422 | if (FieldDecl *Field = dyn_cast<FieldDecl>(ND)) { |
Anders Carlsson | e6d2a53 | 2010-01-29 05:05:36 +0000 | [diff] [blame] | 1423 | LValue LV = EmitLValueForField(BaseValue, Field, |
Anders Carlsson | ce53f7d | 2009-11-07 23:06:58 +0000 | [diff] [blame] | 1424 | BaseQuals.getCVRQualifiers()); |
| 1425 | LValue::SetObjCNonGC(LV, isNonGC); |
| 1426 | setObjCGCLValueClass(getContext(), E, LV); |
| 1427 | return LV; |
| 1428 | } |
| 1429 | |
Anders Carlsson | 589f9e3 | 2009-11-07 23:16:50 +0000 | [diff] [blame] | 1430 | if (VarDecl *VD = dyn_cast<VarDecl>(ND)) |
| 1431 | return EmitGlobalVarDeclLValue(*this, E, VD); |
Eli Friedman | 9a14630 | 2009-11-26 06:08:14 +0000 | [diff] [blame] | 1432 | |
| 1433 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) |
| 1434 | return EmitFunctionDeclLValue(*this, E, FD); |
| 1435 | |
Anders Carlsson | ce53f7d | 2009-11-07 23:06:58 +0000 | [diff] [blame] | 1436 | assert(false && "Unhandled member declaration!"); |
| 1437 | return LValue(); |
Eli Friedman | 472778e | 2008-02-09 08:50:58 +0000 | [diff] [blame] | 1438 | } |
Devang Patel | b9b00ad | 2007-10-23 20:28:39 +0000 | [diff] [blame] | 1439 | |
Fariborz Jahanian | fd64bb6 | 2008-12-15 20:35:07 +0000 | [diff] [blame] | 1440 | LValue CodeGenFunction::EmitLValueForBitfield(llvm::Value* BaseValue, |
Anders Carlsson | 0ed303c | 2009-11-17 03:57:07 +0000 | [diff] [blame] | 1441 | const FieldDecl* Field, |
Fariborz Jahanian | 598d3f6 | 2009-02-03 19:03:09 +0000 | [diff] [blame] | 1442 | unsigned CVRQualifiers) { |
Anders Carlsson | 8330cee | 2009-07-23 17:01:21 +0000 | [diff] [blame] | 1443 | CodeGenTypes::BitFieldInfo Info = CGM.getTypes().getBitFieldInfo(Field); |
| 1444 | |
Mike Stump | f5408fe | 2009-05-16 07:57:57 +0000 | [diff] [blame] | 1445 | // FIXME: CodeGenTypes should expose a method to get the appropriate type for |
| 1446 | // FieldTy (the appropriate type is ABI-dependent). |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1447 | const llvm::Type *FieldTy = |
Daniel Dunbar | bb76773 | 2009-02-17 18:31:04 +0000 | [diff] [blame] | 1448 | CGM.getTypes().ConvertTypeForMem(Field->getType()); |
Fariborz Jahanian | fd64bb6 | 2008-12-15 20:35:07 +0000 | [diff] [blame] | 1449 | const llvm::PointerType *BaseTy = |
| 1450 | cast<llvm::PointerType>(BaseValue->getType()); |
| 1451 | unsigned AS = BaseTy->getAddressSpace(); |
| 1452 | BaseValue = Builder.CreateBitCast(BaseValue, |
Owen Anderson | 96e0fc7 | 2009-07-29 22:16:19 +0000 | [diff] [blame] | 1453 | llvm::PointerType::get(FieldTy, AS), |
Fariborz Jahanian | fd64bb6 | 2008-12-15 20:35:07 +0000 | [diff] [blame] | 1454 | "tmp"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1455 | |
| 1456 | llvm::Value *Idx = |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 1457 | llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Info.FieldNo); |
Anders Carlsson | 8330cee | 2009-07-23 17:01:21 +0000 | [diff] [blame] | 1458 | llvm::Value *V = Builder.CreateGEP(BaseValue, Idx, "tmp"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1459 | |
Anders Carlsson | 8330cee | 2009-07-23 17:01:21 +0000 | [diff] [blame] | 1460 | return LValue::MakeBitfield(V, Info.Start, Info.Size, |
Fariborz Jahanian | fd64bb6 | 2008-12-15 20:35:07 +0000 | [diff] [blame] | 1461 | Field->getType()->isSignedIntegerType(), |
| 1462 | Field->getType().getCVRQualifiers()|CVRQualifiers); |
| 1463 | } |
| 1464 | |
Eli Friedman | 472778e | 2008-02-09 08:50:58 +0000 | [diff] [blame] | 1465 | LValue CodeGenFunction::EmitLValueForField(llvm::Value* BaseValue, |
Anders Carlsson | 0ed303c | 2009-11-17 03:57:07 +0000 | [diff] [blame] | 1466 | const FieldDecl* Field, |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1467 | unsigned CVRQualifiers) { |
Fariborz Jahanian | fd64bb6 | 2008-12-15 20:35:07 +0000 | [diff] [blame] | 1468 | if (Field->isBitField()) |
Fariborz Jahanian | 598d3f6 | 2009-02-03 19:03:09 +0000 | [diff] [blame] | 1469 | return EmitLValueForBitfield(BaseValue, Field, CVRQualifiers); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1470 | |
Fariborz Jahanian | 598d3f6 | 2009-02-03 19:03:09 +0000 | [diff] [blame] | 1471 | unsigned idx = CGM.getTypes().getLLVMFieldNo(Field); |
Fariborz Jahanian | fd64bb6 | 2008-12-15 20:35:07 +0000 | [diff] [blame] | 1472 | llvm::Value *V = Builder.CreateStructGEP(BaseValue, idx, "tmp"); |
Eli Friedman | 1e86b34 | 2008-05-29 11:33:25 +0000 | [diff] [blame] | 1473 | |
Devang Patel | abad06c | 2007-10-26 19:42:18 +0000 | [diff] [blame] | 1474 | // Match union field type. |
Anders Carlsson | e6d2a53 | 2010-01-29 05:05:36 +0000 | [diff] [blame] | 1475 | if (Field->getParent()->isUnion()) { |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1476 | const llvm::Type *FieldTy = |
Eli Friedman | 1e692ac | 2008-06-13 23:01:12 +0000 | [diff] [blame] | 1477 | CGM.getTypes().ConvertTypeForMem(Field->getType()); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1478 | const llvm::PointerType * BaseTy = |
Devang Patel | e9b8c0a | 2007-10-30 20:59:40 +0000 | [diff] [blame] | 1479 | cast<llvm::PointerType>(BaseValue->getType()); |
Eli Friedman | 788d571 | 2008-05-21 13:24:44 +0000 | [diff] [blame] | 1480 | unsigned AS = BaseTy->getAddressSpace(); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1481 | V = Builder.CreateBitCast(V, |
| 1482 | llvm::PointerType::get(FieldTy, AS), |
Eli Friedman | 788d571 | 2008-05-21 13:24:44 +0000 | [diff] [blame] | 1483 | "tmp"); |
Devang Patel | abad06c | 2007-10-26 19:42:18 +0000 | [diff] [blame] | 1484 | } |
Eli Friedman | 2be5861 | 2009-05-30 21:09:44 +0000 | [diff] [blame] | 1485 | if (Field->getType()->isReferenceType()) |
| 1486 | V = Builder.CreateLoad(V, "tmp"); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1487 | |
| 1488 | Qualifiers Quals = MakeQualifiers(Field->getType()); |
| 1489 | Quals.addCVRQualifiers(CVRQualifiers); |
Fariborz Jahanian | fd02ed7 | 2009-09-21 18:54:29 +0000 | [diff] [blame] | 1490 | // __weak attribute on a field is ignored. |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1491 | if (Quals.getObjCGCAttr() == Qualifiers::Weak) |
| 1492 | Quals.removeObjCGCAttr(); |
Fariborz Jahanian | fd02ed7 | 2009-09-21 18:54:29 +0000 | [diff] [blame] | 1493 | |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1494 | return LValue::MakeAddr(V, Quals); |
Devang Patel | b9b00ad | 2007-10-23 20:28:39 +0000 | [diff] [blame] | 1495 | } |
| 1496 | |
Anders Carlsson | 06a2970 | 2010-01-29 05:24:29 +0000 | [diff] [blame] | 1497 | LValue |
| 1498 | CodeGenFunction::EmitLValueForFieldInitialization(llvm::Value* BaseValue, |
| 1499 | const FieldDecl* Field, |
| 1500 | unsigned CVRQualifiers) { |
| 1501 | QualType FieldType = Field->getType(); |
| 1502 | |
| 1503 | if (!FieldType->isReferenceType()) |
| 1504 | return EmitLValueForField(BaseValue, Field, CVRQualifiers); |
| 1505 | |
| 1506 | unsigned idx = CGM.getTypes().getLLVMFieldNo(Field); |
| 1507 | llvm::Value *V = Builder.CreateStructGEP(BaseValue, idx, "tmp"); |
| 1508 | |
| 1509 | assert(!FieldType.getObjCGCAttr() && "fields cannot have GC attrs"); |
| 1510 | |
| 1511 | return LValue::MakeAddr(V, MakeQualifiers(FieldType)); |
| 1512 | } |
| 1513 | |
Chris Lattner | 75dfeda | 2009-03-18 18:28:57 +0000 | [diff] [blame] | 1514 | LValue CodeGenFunction::EmitCompoundLiteralLValue(const CompoundLiteralExpr* E){ |
Eli Friedman | 06e863f | 2008-05-13 23:18:27 +0000 | [diff] [blame] | 1515 | const llvm::Type *LTy = ConvertType(E->getType()); |
| 1516 | llvm::Value *DeclPtr = CreateTempAlloca(LTy, ".compoundliteral"); |
| 1517 | |
| 1518 | const Expr* InitExpr = E->getInitializer(); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1519 | LValue Result = LValue::MakeAddr(DeclPtr, MakeQualifiers(E->getType())); |
Eli Friedman | 06e863f | 2008-05-13 23:18:27 +0000 | [diff] [blame] | 1520 | |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1521 | if (E->getType()->isComplexType()) |
Eli Friedman | 06e863f | 2008-05-13 23:18:27 +0000 | [diff] [blame] | 1522 | EmitComplexExprIntoAddr(InitExpr, DeclPtr, false); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1523 | else if (hasAggregateLLVMType(E->getType())) |
Eli Friedman | 06e863f | 2008-05-13 23:18:27 +0000 | [diff] [blame] | 1524 | EmitAnyExpr(InitExpr, DeclPtr, false); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1525 | else |
Eli Friedman | 06e863f | 2008-05-13 23:18:27 +0000 | [diff] [blame] | 1526 | EmitStoreThroughLValue(EmitAnyExpr(InitExpr), Result, E->getType()); |
Eli Friedman | 06e863f | 2008-05-13 23:18:27 +0000 | [diff] [blame] | 1527 | |
| 1528 | return Result; |
| 1529 | } |
| 1530 | |
Anders Carlsson | 6fcec8b | 2009-09-15 16:35:24 +0000 | [diff] [blame] | 1531 | LValue |
| 1532 | CodeGenFunction::EmitConditionalOperatorLValue(const ConditionalOperator* E) { |
| 1533 | if (E->isLvalue(getContext()) == Expr::LV_Valid) { |
Eli Friedman | ab18995 | 2009-12-25 05:29:40 +0000 | [diff] [blame] | 1534 | if (int Cond = ConstantFoldsToSimpleInteger(E->getCond())) { |
| 1535 | Expr *Live = Cond == 1 ? E->getLHS() : E->getRHS(); |
| 1536 | if (Live) |
| 1537 | return EmitLValue(Live); |
| 1538 | } |
| 1539 | |
| 1540 | if (!E->getLHS()) |
| 1541 | return EmitUnsupportedLValue(E, "conditional operator with missing LHS"); |
| 1542 | |
Anders Carlsson | 6fcec8b | 2009-09-15 16:35:24 +0000 | [diff] [blame] | 1543 | llvm::BasicBlock *LHSBlock = createBasicBlock("cond.true"); |
| 1544 | llvm::BasicBlock *RHSBlock = createBasicBlock("cond.false"); |
| 1545 | llvm::BasicBlock *ContBlock = createBasicBlock("cond.end"); |
| 1546 | |
Eli Friedman | 8e274bd | 2009-12-25 06:17:05 +0000 | [diff] [blame] | 1547 | EmitBranchOnBoolExpr(E->getCond(), LHSBlock, RHSBlock); |
Anders Carlsson | 6fcec8b | 2009-09-15 16:35:24 +0000 | [diff] [blame] | 1548 | |
Anders Carlsson | c1b32f6 | 2010-02-04 17:26:01 +0000 | [diff] [blame] | 1549 | // Any temporaries created here are conditional. |
| 1550 | BeginConditionalBranch(); |
Anders Carlsson | 6fcec8b | 2009-09-15 16:35:24 +0000 | [diff] [blame] | 1551 | EmitBlock(LHSBlock); |
Anders Carlsson | 6fcec8b | 2009-09-15 16:35:24 +0000 | [diff] [blame] | 1552 | LValue LHS = EmitLValue(E->getLHS()); |
Anders Carlsson | c1b32f6 | 2010-02-04 17:26:01 +0000 | [diff] [blame] | 1553 | EndConditionalBranch(); |
| 1554 | |
Anders Carlsson | 6fcec8b | 2009-09-15 16:35:24 +0000 | [diff] [blame] | 1555 | if (!LHS.isSimple()) |
| 1556 | return EmitUnsupportedLValue(E, "conditional operator"); |
| 1557 | |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1558 | llvm::Value *Temp = CreateTempAlloca(LHS.getAddress()->getType(),"condtmp"); |
Anders Carlsson | 6fcec8b | 2009-09-15 16:35:24 +0000 | [diff] [blame] | 1559 | Builder.CreateStore(LHS.getAddress(), Temp); |
| 1560 | EmitBranch(ContBlock); |
| 1561 | |
Anders Carlsson | c1b32f6 | 2010-02-04 17:26:01 +0000 | [diff] [blame] | 1562 | // Any temporaries created here are conditional. |
| 1563 | BeginConditionalBranch(); |
Anders Carlsson | 6fcec8b | 2009-09-15 16:35:24 +0000 | [diff] [blame] | 1564 | EmitBlock(RHSBlock); |
| 1565 | LValue RHS = EmitLValue(E->getRHS()); |
Anders Carlsson | c1b32f6 | 2010-02-04 17:26:01 +0000 | [diff] [blame] | 1566 | EndConditionalBranch(); |
Anders Carlsson | 6fcec8b | 2009-09-15 16:35:24 +0000 | [diff] [blame] | 1567 | if (!RHS.isSimple()) |
| 1568 | return EmitUnsupportedLValue(E, "conditional operator"); |
| 1569 | |
| 1570 | Builder.CreateStore(RHS.getAddress(), Temp); |
| 1571 | EmitBranch(ContBlock); |
| 1572 | |
| 1573 | EmitBlock(ContBlock); |
| 1574 | |
| 1575 | Temp = Builder.CreateLoad(Temp, "lv"); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1576 | return LValue::MakeAddr(Temp, MakeQualifiers(E->getType())); |
Anders Carlsson | 6fcec8b | 2009-09-15 16:35:24 +0000 | [diff] [blame] | 1577 | } |
| 1578 | |
Daniel Dunbar | 9034558 | 2009-03-24 02:38:23 +0000 | [diff] [blame] | 1579 | // ?: here should be an aggregate. |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1580 | assert((hasAggregateLLVMType(E->getType()) && |
Daniel Dunbar | 9034558 | 2009-03-24 02:38:23 +0000 | [diff] [blame] | 1581 | !E->getType()->isAnyComplexType()) && |
| 1582 | "Unexpected conditional operator!"); |
| 1583 | |
| 1584 | llvm::Value *Temp = CreateTempAlloca(ConvertType(E->getType())); |
| 1585 | EmitAggExpr(E, Temp, false); |
| 1586 | |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1587 | return LValue::MakeAddr(Temp, MakeQualifiers(E->getType())); |
Daniel Dunbar | 9034558 | 2009-03-24 02:38:23 +0000 | [diff] [blame] | 1588 | } |
| 1589 | |
Mike Stump | c849c05 | 2009-11-16 06:50:58 +0000 | [diff] [blame] | 1590 | /// EmitCastLValue - Casts are never lvalues unless that cast is a dynamic_cast. |
| 1591 | /// If the cast is a dynamic_cast, we can have the usual lvalue result, |
| 1592 | /// otherwise if a cast is needed by the code generator in an lvalue context, |
| 1593 | /// then it must mean that we need the address of an aggregate in order to |
| 1594 | /// access one of its fields. This can happen for all the reasons that casts |
| 1595 | /// are permitted with aggregate result, including noop aggregate casts, and |
| 1596 | /// cast from scalar to union. |
Chris Lattner | 75dfeda | 2009-03-18 18:28:57 +0000 | [diff] [blame] | 1597 | LValue CodeGenFunction::EmitCastLValue(const CastExpr *E) { |
Anders Carlsson | 0ee33cf | 2009-09-12 16:16:49 +0000 | [diff] [blame] | 1598 | switch (E->getCastKind()) { |
| 1599 | default: |
Eli Friedman | eaae78a | 2009-11-16 05:48:01 +0000 | [diff] [blame] | 1600 | return EmitUnsupportedLValue(E, "unexpected cast lvalue"); |
| 1601 | |
Mike Stump | c849c05 | 2009-11-16 06:50:58 +0000 | [diff] [blame] | 1602 | case CastExpr::CK_Dynamic: { |
| 1603 | LValue LV = EmitLValue(E->getSubExpr()); |
| 1604 | llvm::Value *V = LV.getAddress(); |
| 1605 | const CXXDynamicCastExpr *DCE = cast<CXXDynamicCastExpr>(E); |
| 1606 | return LValue::MakeAddr(EmitDynamicCast(V, DCE), |
| 1607 | MakeQualifiers(E->getType())); |
| 1608 | } |
| 1609 | |
Anders Carlsson | 0ee33cf | 2009-09-12 16:16:49 +0000 | [diff] [blame] | 1610 | case CastExpr::CK_NoOp: |
| 1611 | case CastExpr::CK_ConstructorConversion: |
| 1612 | case CastExpr::CK_UserDefinedConversion: |
Fariborz Jahanian | a7fa7cd | 2009-12-15 21:34:52 +0000 | [diff] [blame] | 1613 | case CastExpr::CK_AnyPointerToObjCPointerCast: |
Chris Lattner | 75dfeda | 2009-03-18 18:28:57 +0000 | [diff] [blame] | 1614 | return EmitLValue(E->getSubExpr()); |
Anders Carlsson | 0ee33cf | 2009-09-12 16:16:49 +0000 | [diff] [blame] | 1615 | |
| 1616 | case CastExpr::CK_DerivedToBase: { |
| 1617 | const RecordType *DerivedClassTy = |
| 1618 | E->getSubExpr()->getType()->getAs<RecordType>(); |
| 1619 | CXXRecordDecl *DerivedClassDecl = |
| 1620 | cast<CXXRecordDecl>(DerivedClassTy->getDecl()); |
Chris Lattner | 75dfeda | 2009-03-18 18:28:57 +0000 | [diff] [blame] | 1621 | |
Anders Carlsson | 0ee33cf | 2009-09-12 16:16:49 +0000 | [diff] [blame] | 1622 | const RecordType *BaseClassTy = E->getType()->getAs<RecordType>(); |
| 1623 | CXXRecordDecl *BaseClassDecl = cast<CXXRecordDecl>(BaseClassTy->getDecl()); |
| 1624 | |
| 1625 | LValue LV = EmitLValue(E->getSubExpr()); |
| 1626 | |
| 1627 | // Perform the derived-to-base conversion |
| 1628 | llvm::Value *Base = |
Anders Carlsson | a3697c9 | 2009-11-23 17:57:54 +0000 | [diff] [blame] | 1629 | GetAddressOfBaseClass(LV.getAddress(), DerivedClassDecl, |
| 1630 | BaseClassDecl, /*NullCheckValue=*/false); |
Anders Carlsson | 0ee33cf | 2009-09-12 16:16:49 +0000 | [diff] [blame] | 1631 | |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1632 | return LValue::MakeAddr(Base, MakeQualifiers(E->getType())); |
Anders Carlsson | 0ee33cf | 2009-09-12 16:16:49 +0000 | [diff] [blame] | 1633 | } |
Anders Carlsson | 0ee33cf | 2009-09-12 16:16:49 +0000 | [diff] [blame] | 1634 | case CastExpr::CK_ToUnion: { |
| 1635 | llvm::Value *Temp = CreateTempAlloca(ConvertType(E->getType())); |
| 1636 | EmitAnyExpr(E->getSubExpr(), Temp, false); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1637 | |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1638 | return LValue::MakeAddr(Temp, MakeQualifiers(E->getType())); |
Anders Carlsson | 658e812 | 2009-11-14 21:21:42 +0000 | [diff] [blame] | 1639 | } |
Eli Friedman | eaae78a | 2009-11-16 05:48:01 +0000 | [diff] [blame] | 1640 | case CastExpr::CK_BaseToDerived: { |
Anders Carlsson | a3697c9 | 2009-11-23 17:57:54 +0000 | [diff] [blame] | 1641 | const RecordType *BaseClassTy = |
| 1642 | E->getSubExpr()->getType()->getAs<RecordType>(); |
| 1643 | CXXRecordDecl *BaseClassDecl = |
| 1644 | cast<CXXRecordDecl>(BaseClassTy->getDecl()); |
| 1645 | |
| 1646 | const RecordType *DerivedClassTy = E->getType()->getAs<RecordType>(); |
| 1647 | CXXRecordDecl *DerivedClassDecl = |
| 1648 | cast<CXXRecordDecl>(DerivedClassTy->getDecl()); |
| 1649 | |
| 1650 | LValue LV = EmitLValue(E->getSubExpr()); |
| 1651 | |
| 1652 | // Perform the base-to-derived conversion |
| 1653 | llvm::Value *Derived = |
| 1654 | GetAddressOfDerivedClass(LV.getAddress(), BaseClassDecl, |
| 1655 | DerivedClassDecl, /*NullCheckValue=*/false); |
| 1656 | |
| 1657 | return LValue::MakeAddr(Derived, MakeQualifiers(E->getType())); |
Eli Friedman | eaae78a | 2009-11-16 05:48:01 +0000 | [diff] [blame] | 1658 | } |
Anders Carlsson | 658e812 | 2009-11-14 21:21:42 +0000 | [diff] [blame] | 1659 | case CastExpr::CK_BitCast: { |
Eli Friedman | eaae78a | 2009-11-16 05:48:01 +0000 | [diff] [blame] | 1660 | // This must be a reinterpret_cast (or c-style equivalent). |
| 1661 | const ExplicitCastExpr *CE = cast<ExplicitCastExpr>(E); |
Anders Carlsson | 658e812 | 2009-11-14 21:21:42 +0000 | [diff] [blame] | 1662 | |
| 1663 | LValue LV = EmitLValue(E->getSubExpr()); |
| 1664 | llvm::Value *V = Builder.CreateBitCast(LV.getAddress(), |
| 1665 | ConvertType(CE->getTypeAsWritten())); |
| 1666 | return LValue::MakeAddr(V, MakeQualifiers(E->getType())); |
| 1667 | } |
Anders Carlsson | 0ee33cf | 2009-09-12 16:16:49 +0000 | [diff] [blame] | 1668 | } |
Chris Lattner | 75dfeda | 2009-03-18 18:28:57 +0000 | [diff] [blame] | 1669 | } |
| 1670 | |
Fariborz Jahanian | 48620ba | 2009-10-20 23:29:04 +0000 | [diff] [blame] | 1671 | LValue CodeGenFunction::EmitNullInitializationLValue( |
| 1672 | const CXXZeroInitValueExpr *E) { |
| 1673 | QualType Ty = E->getType(); |
| 1674 | const llvm::Type *LTy = ConvertTypeForMem(Ty); |
| 1675 | llvm::AllocaInst *Alloc = CreateTempAlloca(LTy); |
Ken Dyck | 3228f42 | 2010-01-26 18:35:11 +0000 | [diff] [blame] | 1676 | CharUnits Align = getContext().getTypeAlignInChars(Ty); |
| 1677 | Alloc->setAlignment(Align.getQuantity()); |
Fariborz Jahanian | 48620ba | 2009-10-20 23:29:04 +0000 | [diff] [blame] | 1678 | LValue lvalue = LValue::MakeAddr(Alloc, Qualifiers()); |
| 1679 | EmitMemSetToZero(lvalue.getAddress(), Ty); |
| 1680 | return lvalue; |
| 1681 | } |
| 1682 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1683 | //===--------------------------------------------------------------------===// |
| 1684 | // Expression Emission |
| 1685 | //===--------------------------------------------------------------------===// |
| 1686 | |
Chris Lattner | 7016a70 | 2007-08-20 22:37:10 +0000 | [diff] [blame] | 1687 | |
Anders Carlsson | d2490a9 | 2009-12-24 20:40:36 +0000 | [diff] [blame] | 1688 | RValue CodeGenFunction::EmitCallExpr(const CallExpr *E, |
| 1689 | ReturnValueSlot ReturnValue) { |
Daniel Dunbar | c0ef9f5 | 2009-02-20 18:06:48 +0000 | [diff] [blame] | 1690 | // Builtins never have block type. |
Daniel Dunbar | ce1d38b | 2009-01-09 16:50:52 +0000 | [diff] [blame] | 1691 | if (E->getCallee()->getType()->isBlockPointerType()) |
Anders Carlsson | a1736c0 | 2009-12-24 21:13:40 +0000 | [diff] [blame] | 1692 | return EmitBlockCallExpr(E, ReturnValue); |
Daniel Dunbar | ce1d38b | 2009-01-09 16:50:52 +0000 | [diff] [blame] | 1693 | |
Anders Carlsson | 774e7c6 | 2009-04-03 22:50:24 +0000 | [diff] [blame] | 1694 | if (const CXXMemberCallExpr *CE = dyn_cast<CXXMemberCallExpr>(E)) |
Anders Carlsson | a1736c0 | 2009-12-24 21:13:40 +0000 | [diff] [blame] | 1695 | return EmitCXXMemberCallExpr(CE, ReturnValue); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1696 | |
Daniel Dunbar | c0ef9f5 | 2009-02-20 18:06:48 +0000 | [diff] [blame] | 1697 | const Decl *TargetDecl = 0; |
Daniel Dunbar | dd7b897 | 2009-02-20 19:34:33 +0000 | [diff] [blame] | 1698 | if (const ImplicitCastExpr *CE = dyn_cast<ImplicitCastExpr>(E->getCallee())) { |
| 1699 | if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(CE->getSubExpr())) { |
| 1700 | TargetDecl = DRE->getDecl(); |
| 1701 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(TargetDecl)) |
Douglas Gregor | 7814e6d | 2009-09-12 00:22:50 +0000 | [diff] [blame] | 1702 | if (unsigned builtinID = FD->getBuiltinID()) |
Daniel Dunbar | dd7b897 | 2009-02-20 19:34:33 +0000 | [diff] [blame] | 1703 | return EmitBuiltinExpr(FD, builtinID, E); |
Daniel Dunbar | c0ef9f5 | 2009-02-20 18:06:48 +0000 | [diff] [blame] | 1704 | } |
| 1705 | } |
| 1706 | |
Chris Lattner | 5db7ae5 | 2009-06-13 00:26:38 +0000 | [diff] [blame] | 1707 | if (const CXXOperatorCallExpr *CE = dyn_cast<CXXOperatorCallExpr>(E)) |
Anders Carlsson | 0f29463 | 2009-05-27 04:18:27 +0000 | [diff] [blame] | 1708 | if (const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(TargetDecl)) |
Anders Carlsson | a1736c0 | 2009-12-24 21:13:40 +0000 | [diff] [blame] | 1709 | return EmitCXXOperatorMemberCallExpr(CE, MD, ReturnValue); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1710 | |
Eli Friedman | c4451db | 2009-12-08 02:09:46 +0000 | [diff] [blame] | 1711 | if (isa<CXXPseudoDestructorExpr>(E->getCallee()->IgnoreParens())) { |
Douglas Gregor | a71d819 | 2009-09-04 17:36:40 +0000 | [diff] [blame] | 1712 | // C++ [expr.pseudo]p1: |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1713 | // The result shall only be used as the operand for the function call |
Douglas Gregor | a71d819 | 2009-09-04 17:36:40 +0000 | [diff] [blame] | 1714 | // operator (), and the result of such a call has type void. The only |
| 1715 | // effect is the evaluation of the postfix-expression before the dot or |
| 1716 | // arrow. |
| 1717 | EmitScalarExpr(E->getCallee()); |
| 1718 | return RValue::get(0); |
| 1719 | } |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1720 | |
Chris Lattner | 7f02f72 | 2007-08-24 05:35:26 +0000 | [diff] [blame] | 1721 | llvm::Value *Callee = EmitScalarExpr(E->getCallee()); |
Anders Carlsson | d2490a9 | 2009-12-24 20:40:36 +0000 | [diff] [blame] | 1722 | return EmitCall(E->getCallee()->getType(), Callee, ReturnValue, |
Anders Carlsson | 9864771 | 2009-05-27 01:22:39 +0000 | [diff] [blame] | 1723 | E->arg_begin(), E->arg_end(), TargetDecl); |
Chris Lattner | c5e940f | 2007-08-31 04:44:06 +0000 | [diff] [blame] | 1724 | } |
| 1725 | |
Daniel Dunbar | 80e62c2 | 2008-09-04 03:20:13 +0000 | [diff] [blame] | 1726 | LValue CodeGenFunction::EmitBinaryOperatorLValue(const BinaryOperator *E) { |
Chris Lattner | 7a574cc | 2009-05-12 21:28:12 +0000 | [diff] [blame] | 1727 | // Comma expressions just emit their LHS then their RHS as an l-value. |
| 1728 | if (E->getOpcode() == BinaryOperator::Comma) { |
| 1729 | EmitAnyExpr(E->getLHS()); |
Eli Friedman | 130c69e | 2009-12-07 20:18:11 +0000 | [diff] [blame] | 1730 | EnsureInsertPoint(); |
Chris Lattner | 7a574cc | 2009-05-12 21:28:12 +0000 | [diff] [blame] | 1731 | return EmitLValue(E->getRHS()); |
| 1732 | } |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1733 | |
Fariborz Jahanian | 52f08bc | 2009-10-26 21:58:25 +0000 | [diff] [blame] | 1734 | if (E->getOpcode() == BinaryOperator::PtrMemD || |
| 1735 | E->getOpcode() == BinaryOperator::PtrMemI) |
Fariborz Jahanian | 8bfd31f | 2009-10-22 22:57:31 +0000 | [diff] [blame] | 1736 | return EmitPointerToDataMemberBinaryExpr(E); |
| 1737 | |
Daniel Dunbar | 80e62c2 | 2008-09-04 03:20:13 +0000 | [diff] [blame] | 1738 | // Can only get l-value for binary operator expressions which are a |
| 1739 | // simple assignment of aggregate type. |
| 1740 | if (E->getOpcode() != BinaryOperator::Assign) |
| 1741 | return EmitUnsupportedLValue(E, "binary l-value expression"); |
| 1742 | |
Anders Carlsson | 86aa0cd | 2009-10-19 18:28:22 +0000 | [diff] [blame] | 1743 | if (!hasAggregateLLVMType(E->getType())) { |
| 1744 | // Emit the LHS as an l-value. |
| 1745 | LValue LV = EmitLValue(E->getLHS()); |
| 1746 | |
| 1747 | llvm::Value *RHS = EmitScalarExpr(E->getRHS()); |
| 1748 | EmitStoreOfScalar(RHS, LV.getAddress(), LV.isVolatileQualified(), |
| 1749 | E->getType()); |
| 1750 | return LV; |
| 1751 | } |
| 1752 | |
Daniel Dunbar | 80e62c2 | 2008-09-04 03:20:13 +0000 | [diff] [blame] | 1753 | llvm::Value *Temp = CreateTempAlloca(ConvertType(E->getType())); |
| 1754 | EmitAggExpr(E, Temp, false); |
| 1755 | // FIXME: Are these qualifiers correct? |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1756 | return LValue::MakeAddr(Temp, MakeQualifiers(E->getType())); |
Daniel Dunbar | 80e62c2 | 2008-09-04 03:20:13 +0000 | [diff] [blame] | 1757 | } |
| 1758 | |
Christopher Lamb | 22c940e | 2007-12-29 05:02:41 +0000 | [diff] [blame] | 1759 | LValue CodeGenFunction::EmitCallExprLValue(const CallExpr *E) { |
Christopher Lamb | 22c940e | 2007-12-29 05:02:41 +0000 | [diff] [blame] | 1760 | RValue RV = EmitCallExpr(E); |
Anders Carlsson | 4826568 | 2009-05-27 01:45:47 +0000 | [diff] [blame] | 1761 | |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1762 | if (!RV.isScalar()) |
| 1763 | return LValue::MakeAddr(RV.getAggregateAddr(),MakeQualifiers(E->getType())); |
| 1764 | |
| 1765 | assert(E->getCallReturnType()->isReferenceType() && |
| 1766 | "Can't have a scalar return unless the return type is a " |
| 1767 | "reference type!"); |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1768 | |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1769 | return LValue::MakeAddr(RV.getScalarVal(), MakeQualifiers(E->getType())); |
Christopher Lamb | 22c940e | 2007-12-29 05:02:41 +0000 | [diff] [blame] | 1770 | } |
| 1771 | |
Daniel Dunbar | 5b5c9ef | 2009-02-11 20:59:32 +0000 | [diff] [blame] | 1772 | LValue CodeGenFunction::EmitVAArgExprLValue(const VAArgExpr *E) { |
| 1773 | // FIXME: This shouldn't require another copy. |
| 1774 | llvm::Value *Temp = CreateTempAlloca(ConvertType(E->getType())); |
| 1775 | EmitAggExpr(E, Temp, false); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1776 | return LValue::MakeAddr(Temp, MakeQualifiers(E->getType())); |
Daniel Dunbar | 5b5c9ef | 2009-02-11 20:59:32 +0000 | [diff] [blame] | 1777 | } |
| 1778 | |
Anders Carlsson | b58d017 | 2009-05-30 23:23:33 +0000 | [diff] [blame] | 1779 | LValue CodeGenFunction::EmitCXXConstructLValue(const CXXConstructExpr *E) { |
| 1780 | llvm::Value *Temp = CreateTempAlloca(ConvertTypeForMem(E->getType()), "tmp"); |
| 1781 | EmitCXXConstructExpr(Temp, E); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1782 | return LValue::MakeAddr(Temp, MakeQualifiers(E->getType())); |
Anders Carlsson | b58d017 | 2009-05-30 23:23:33 +0000 | [diff] [blame] | 1783 | } |
| 1784 | |
Anders Carlsson | e61c9e8 | 2009-05-30 23:30:54 +0000 | [diff] [blame] | 1785 | LValue |
Mike Stump | c2e84ae | 2009-11-15 08:09:41 +0000 | [diff] [blame] | 1786 | CodeGenFunction::EmitCXXTypeidLValue(const CXXTypeidExpr *E) { |
| 1787 | llvm::Value *Temp = EmitCXXTypeidExpr(E); |
| 1788 | return LValue::MakeAddr(Temp, MakeQualifiers(E->getType())); |
| 1789 | } |
| 1790 | |
| 1791 | LValue |
Anders Carlsson | e61c9e8 | 2009-05-30 23:30:54 +0000 | [diff] [blame] | 1792 | CodeGenFunction::EmitCXXBindTemporaryLValue(const CXXBindTemporaryExpr *E) { |
| 1793 | LValue LV = EmitLValue(E->getSubExpr()); |
Anders Carlsson | 543ac0c | 2009-05-31 00:34:10 +0000 | [diff] [blame] | 1794 | PushCXXTemporary(E->getTemporary(), LV.getAddress()); |
Anders Carlsson | e61c9e8 | 2009-05-30 23:30:54 +0000 | [diff] [blame] | 1795 | return LV; |
| 1796 | } |
| 1797 | |
Daniel Dunbar | 0a04d77 | 2008-08-23 10:51:21 +0000 | [diff] [blame] | 1798 | LValue CodeGenFunction::EmitObjCMessageExprLValue(const ObjCMessageExpr *E) { |
| 1799 | // Can only get l-value for message expression returning aggregate type |
| 1800 | RValue RV = EmitObjCMessageExpr(E); |
| 1801 | // FIXME: can this be volatile? |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1802 | return LValue::MakeAddr(RV.getAggregateAddr(), MakeQualifiers(E->getType())); |
Daniel Dunbar | 0a04d77 | 2008-08-23 10:51:21 +0000 | [diff] [blame] | 1803 | } |
| 1804 | |
Daniel Dunbar | 2a03192 | 2009-04-22 05:08:15 +0000 | [diff] [blame] | 1805 | llvm::Value *CodeGenFunction::EmitIvarOffset(const ObjCInterfaceDecl *Interface, |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 1806 | const ObjCIvarDecl *Ivar) { |
Fariborz Jahanian | f63aa3f | 2009-02-10 19:02:04 +0000 | [diff] [blame] | 1807 | return CGM.getObjCRuntime().EmitIvarOffset(*this, Interface, Ivar); |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 1808 | } |
| 1809 | |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 1810 | LValue CodeGenFunction::EmitLValueForIvar(QualType ObjectTy, |
| 1811 | llvm::Value *BaseValue, |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 1812 | const ObjCIvarDecl *Ivar, |
| 1813 | unsigned CVRQualifiers) { |
Chris Lattner | 26f074b | 2009-04-17 17:44:48 +0000 | [diff] [blame] | 1814 | return CGM.getObjCRuntime().EmitObjCValueForIvar(*this, ObjectTy, BaseValue, |
Daniel Dunbar | 525c9b7 | 2009-04-21 01:19:28 +0000 | [diff] [blame] | 1815 | Ivar, CVRQualifiers); |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 1816 | } |
| 1817 | |
| 1818 | LValue CodeGenFunction::EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E) { |
Anders Carlsson | 29b7e50 | 2008-08-25 01:53:23 +0000 | [diff] [blame] | 1819 | // FIXME: A lot of the code below could be shared with EmitMemberExpr. |
| 1820 | llvm::Value *BaseValue = 0; |
| 1821 | const Expr *BaseExpr = E->getBase(); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1822 | Qualifiers BaseQuals; |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 1823 | QualType ObjectTy; |
Anders Carlsson | 29b7e50 | 2008-08-25 01:53:23 +0000 | [diff] [blame] | 1824 | if (E->isArrow()) { |
| 1825 | BaseValue = EmitScalarExpr(BaseExpr); |
Steve Naroff | 14108da | 2009-07-10 23:34:53 +0000 | [diff] [blame] | 1826 | ObjectTy = BaseExpr->getType()->getPointeeType(); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1827 | BaseQuals = ObjectTy.getQualifiers(); |
Anders Carlsson | 29b7e50 | 2008-08-25 01:53:23 +0000 | [diff] [blame] | 1828 | } else { |
| 1829 | LValue BaseLV = EmitLValue(BaseExpr); |
| 1830 | // FIXME: this isn't right for bitfields. |
| 1831 | BaseValue = BaseLV.getAddress(); |
Fariborz Jahanian | 45012a7 | 2009-02-03 00:09:52 +0000 | [diff] [blame] | 1832 | ObjectTy = BaseExpr->getType(); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1833 | BaseQuals = ObjectTy.getQualifiers(); |
Anders Carlsson | 29b7e50 | 2008-08-25 01:53:23 +0000 | [diff] [blame] | 1834 | } |
Daniel Dunbar | 29e0bcc | 2008-09-24 04:00:38 +0000 | [diff] [blame] | 1835 | |
Fariborz Jahanian | dbf3cfd | 2009-09-16 23:11:23 +0000 | [diff] [blame] | 1836 | LValue LV = |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1837 | EmitLValueForIvar(ObjectTy, BaseValue, E->getDecl(), |
| 1838 | BaseQuals.getCVRQualifiers()); |
Fariborz Jahanian | dbf3cfd | 2009-09-16 23:11:23 +0000 | [diff] [blame] | 1839 | setObjCGCLValueClass(getContext(), E, LV); |
| 1840 | return LV; |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 1841 | } |
| 1842 | |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1843 | LValue |
Daniel Dunbar | 85c59ed | 2008-08-29 08:11:39 +0000 | [diff] [blame] | 1844 | CodeGenFunction::EmitObjCPropertyRefLValue(const ObjCPropertyRefExpr *E) { |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1845 | // This is a special l-value that just issues sends when we load or store |
| 1846 | // through it. |
Daniel Dunbar | 85c59ed | 2008-08-29 08:11:39 +0000 | [diff] [blame] | 1847 | return LValue::MakePropertyRef(E, E->getType().getCVRQualifiers()); |
| 1848 | } |
| 1849 | |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1850 | LValue CodeGenFunction::EmitObjCKVCRefLValue( |
Fariborz Jahanian | 09105f5 | 2009-08-20 17:02:02 +0000 | [diff] [blame] | 1851 | const ObjCImplicitSetterGetterRefExpr *E) { |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1852 | // This is a special l-value that just issues sends when we load or store |
| 1853 | // through it. |
Fariborz Jahanian | 43f4470 | 2008-11-22 22:30:21 +0000 | [diff] [blame] | 1854 | return LValue::MakeKVCRef(E, E->getType().getCVRQualifiers()); |
| 1855 | } |
| 1856 | |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1857 | LValue CodeGenFunction::EmitObjCSuperExprLValue(const ObjCSuperExpr *E) { |
Douglas Gregor | cd9b46e | 2008-11-04 14:56:14 +0000 | [diff] [blame] | 1858 | return EmitUnsupportedLValue(E, "use of super"); |
| 1859 | } |
| 1860 | |
Chris Lattner | 6545994 | 2009-04-25 19:35:26 +0000 | [diff] [blame] | 1861 | LValue CodeGenFunction::EmitStmtExprLValue(const StmtExpr *E) { |
Chris Lattner | 6545994 | 2009-04-25 19:35:26 +0000 | [diff] [blame] | 1862 | // Can only get l-value for message expression returning aggregate type |
| 1863 | RValue RV = EmitAnyExprToTemp(E); |
| 1864 | // FIXME: can this be volatile? |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 1865 | return LValue::MakeAddr(RV.getAggregateAddr(), MakeQualifiers(E->getType())); |
Chris Lattner | 6545994 | 2009-04-25 19:35:26 +0000 | [diff] [blame] | 1866 | } |
| 1867 | |
Anders Carlsson | 31777a2 | 2009-12-24 19:08:58 +0000 | [diff] [blame] | 1868 | RValue CodeGenFunction::EmitCall(QualType CalleeType, llvm::Value *Callee, |
Anders Carlsson | d2490a9 | 2009-12-24 20:40:36 +0000 | [diff] [blame] | 1869 | ReturnValueSlot ReturnValue, |
Anders Carlsson | 9864771 | 2009-05-27 01:22:39 +0000 | [diff] [blame] | 1870 | CallExpr::const_arg_iterator ArgBeg, |
| 1871 | CallExpr::const_arg_iterator ArgEnd, |
| 1872 | const Decl *TargetDecl) { |
Mike Stump | db52dcd | 2009-09-09 13:00:44 +0000 | [diff] [blame] | 1873 | // Get the actual function type. The callee type will always be a pointer to |
| 1874 | // function type or a block pointer type. |
| 1875 | assert(CalleeType->isFunctionPointerType() && |
Anders Carlsson | 8ac67a7 | 2009-04-07 18:53:02 +0000 | [diff] [blame] | 1876 | "Call must have function pointer type!"); |
| 1877 | |
John McCall | 00a1ad9 | 2009-10-23 08:22:42 +0000 | [diff] [blame] | 1878 | CalleeType = getContext().getCanonicalType(CalleeType); |
| 1879 | |
| 1880 | QualType FnType = cast<PointerType>(CalleeType)->getPointeeType(); |
| 1881 | QualType ResultType = cast<FunctionType>(FnType)->getResultType(); |
Daniel Dunbar | 19cd87e | 2008-08-30 03:02:31 +0000 | [diff] [blame] | 1882 | |
| 1883 | CallArgList Args; |
John McCall | 00a1ad9 | 2009-10-23 08:22:42 +0000 | [diff] [blame] | 1884 | EmitCallArgs(Args, dyn_cast<FunctionProtoType>(FnType), ArgBeg, ArgEnd); |
Daniel Dunbar | 19cd87e | 2008-08-30 03:02:31 +0000 | [diff] [blame] | 1885 | |
Daniel Dunbar | 8a9f3fd | 2009-09-11 22:25:00 +0000 | [diff] [blame] | 1886 | // FIXME: We should not need to do this, it should be part of the function |
| 1887 | // type. |
| 1888 | unsigned CallingConvention = 0; |
| 1889 | if (const llvm::Function *F = |
| 1890 | dyn_cast<llvm::Function>(Callee->stripPointerCasts())) |
| 1891 | CallingConvention = F->getCallingConv(); |
| 1892 | return EmitCall(CGM.getTypes().getFunctionInfo(ResultType, Args, |
| 1893 | CallingConvention), |
Anders Carlsson | d2490a9 | 2009-12-24 20:40:36 +0000 | [diff] [blame] | 1894 | Callee, ReturnValue, Args, TargetDecl); |
Daniel Dunbar | 8f2926b | 2008-08-23 03:46:30 +0000 | [diff] [blame] | 1895 | } |
Fariborz Jahanian | 8bfd31f | 2009-10-22 22:57:31 +0000 | [diff] [blame] | 1896 | |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1897 | LValue CodeGenFunction:: |
| 1898 | EmitPointerToDataMemberBinaryExpr(const BinaryOperator *E) { |
Eli Friedman | 1c5c1a0 | 2009-11-18 05:01:17 +0000 | [diff] [blame] | 1899 | llvm::Value *BaseV; |
Fariborz Jahanian | 52f08bc | 2009-10-26 21:58:25 +0000 | [diff] [blame] | 1900 | if (E->getOpcode() == BinaryOperator::PtrMemI) |
Eli Friedman | 1c5c1a0 | 2009-11-18 05:01:17 +0000 | [diff] [blame] | 1901 | BaseV = EmitScalarExpr(E->getLHS()); |
| 1902 | else |
| 1903 | BaseV = EmitLValue(E->getLHS()).getAddress(); |
Fariborz Jahanian | 8bfd31f | 2009-10-22 22:57:31 +0000 | [diff] [blame] | 1904 | const llvm::Type *i8Ty = llvm::Type::getInt8PtrTy(getLLVMContext()); |
| 1905 | BaseV = Builder.CreateBitCast(BaseV, i8Ty); |
Eli Friedman | 1c5c1a0 | 2009-11-18 05:01:17 +0000 | [diff] [blame] | 1906 | llvm::Value *OffsetV = EmitScalarExpr(E->getRHS()); |
Fariborz Jahanian | 8bfd31f | 2009-10-22 22:57:31 +0000 | [diff] [blame] | 1907 | llvm::Value *AddV = Builder.CreateInBoundsGEP(BaseV, OffsetV, "add.ptr"); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1908 | |
Fariborz Jahanian | 8bfd31f | 2009-10-22 22:57:31 +0000 | [diff] [blame] | 1909 | QualType Ty = E->getRHS()->getType(); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1910 | Ty = Ty->getAs<MemberPointerType>()->getPointeeType(); |
| 1911 | |
| 1912 | const llvm::Type *PType = ConvertType(getContext().getPointerType(Ty)); |
Fariborz Jahanian | 8bfd31f | 2009-10-22 22:57:31 +0000 | [diff] [blame] | 1913 | AddV = Builder.CreateBitCast(AddV, PType); |
Chris Lattner | eb99b01 | 2009-10-28 17:39:19 +0000 | [diff] [blame] | 1914 | return LValue::MakeAddr(AddV, MakeQualifiers(Ty)); |
Fariborz Jahanian | 8bfd31f | 2009-10-22 22:57:31 +0000 | [diff] [blame] | 1915 | } |
| 1916 | |