forked from OSchip/llvm-project
Move a bunch of class related functions to CGClass.cpp, no functionality change.
llvm-svn: 92148
This commit is contained in:
Anders Carlsson
parent
c19b219280
commit
fb404888af
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@ -1056,651 +1056,6 @@ CodeGenFunction::BuildVirtualCall(const CXXDestructorDecl *DD, CXXDtorType Type,
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return ::BuildVirtualCall(*this, VtableIndex, This, Ty);
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}
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/// EmitClassAggrMemberwiseCopy - This routine generates code to copy a class
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/// array of objects from SrcValue to DestValue. Copying can be either a bitwise
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/// copy or via a copy constructor call.
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// FIXME. Consolidate this with EmitCXXAggrConstructorCall.
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void CodeGenFunction::EmitClassAggrMemberwiseCopy(llvm::Value *Dest,
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llvm::Value *Src,
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const ArrayType *Array,
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const CXXRecordDecl *BaseClassDecl,
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QualType Ty) {
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const ConstantArrayType *CA = dyn_cast<ConstantArrayType>(Array);
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assert(CA && "VLA cannot be copied over");
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bool BitwiseCopy = BaseClassDecl->hasTrivialCopyConstructor();
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// Create a temporary for the loop index and initialize it with 0.
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llvm::Value *IndexPtr = CreateTempAlloca(llvm::Type::getInt64Ty(VMContext),
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"loop.index");
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llvm::Value* zeroConstant =
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llvm::Constant::getNullValue(llvm::Type::getInt64Ty(VMContext));
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Builder.CreateStore(zeroConstant, IndexPtr);
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// Start the loop with a block that tests the condition.
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llvm::BasicBlock *CondBlock = createBasicBlock("for.cond");
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llvm::BasicBlock *AfterFor = createBasicBlock("for.end");
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EmitBlock(CondBlock);
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llvm::BasicBlock *ForBody = createBasicBlock("for.body");
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// Generate: if (loop-index < number-of-elements fall to the loop body,
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// otherwise, go to the block after the for-loop.
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uint64_t NumElements = getContext().getConstantArrayElementCount(CA);
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llvm::Value * NumElementsPtr =
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llvm::ConstantInt::get(llvm::Type::getInt64Ty(VMContext), NumElements);
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llvm::Value *Counter = Builder.CreateLoad(IndexPtr);
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llvm::Value *IsLess = Builder.CreateICmpULT(Counter, NumElementsPtr,
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"isless");
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// If the condition is true, execute the body.
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Builder.CreateCondBr(IsLess, ForBody, AfterFor);
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EmitBlock(ForBody);
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llvm::BasicBlock *ContinueBlock = createBasicBlock("for.inc");
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// Inside the loop body, emit the constructor call on the array element.
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Counter = Builder.CreateLoad(IndexPtr);
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Src = Builder.CreateInBoundsGEP(Src, Counter, "srcaddress");
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Dest = Builder.CreateInBoundsGEP(Dest, Counter, "destaddress");
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if (BitwiseCopy)
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EmitAggregateCopy(Dest, Src, Ty);
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else if (CXXConstructorDecl *BaseCopyCtor =
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BaseClassDecl->getCopyConstructor(getContext(), 0)) {
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llvm::Value *Callee = CGM.GetAddrOfCXXConstructor(BaseCopyCtor,
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Ctor_Complete);
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CallArgList CallArgs;
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// Push the this (Dest) ptr.
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CallArgs.push_back(std::make_pair(RValue::get(Dest),
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BaseCopyCtor->getThisType(getContext())));
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// Push the Src ptr.
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CallArgs.push_back(std::make_pair(RValue::get(Src),
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BaseCopyCtor->getParamDecl(0)->getType()));
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QualType ResultType =
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BaseCopyCtor->getType()->getAs<FunctionType>()->getResultType();
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EmitCall(CGM.getTypes().getFunctionInfo(ResultType, CallArgs),
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Callee, ReturnValueSlot(), CallArgs, BaseCopyCtor);
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}
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EmitBlock(ContinueBlock);
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// Emit the increment of the loop counter.
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llvm::Value *NextVal = llvm::ConstantInt::get(Counter->getType(), 1);
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Counter = Builder.CreateLoad(IndexPtr);
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NextVal = Builder.CreateAdd(Counter, NextVal, "inc");
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Builder.CreateStore(NextVal, IndexPtr);
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// Finally, branch back up to the condition for the next iteration.
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EmitBranch(CondBlock);
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// Emit the fall-through block.
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EmitBlock(AfterFor, true);
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}
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/// EmitClassAggrCopyAssignment - This routine generates code to assign a class
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/// array of objects from SrcValue to DestValue. Assignment can be either a
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/// bitwise assignment or via a copy assignment operator function call.
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/// FIXME. This can be consolidated with EmitClassAggrMemberwiseCopy
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void CodeGenFunction::EmitClassAggrCopyAssignment(llvm::Value *Dest,
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llvm::Value *Src,
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const ArrayType *Array,
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const CXXRecordDecl *BaseClassDecl,
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QualType Ty) {
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const ConstantArrayType *CA = dyn_cast<ConstantArrayType>(Array);
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assert(CA && "VLA cannot be asssigned");
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bool BitwiseAssign = BaseClassDecl->hasTrivialCopyAssignment();
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// Create a temporary for the loop index and initialize it with 0.
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llvm::Value *IndexPtr = CreateTempAlloca(llvm::Type::getInt64Ty(VMContext),
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"loop.index");
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llvm::Value* zeroConstant =
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llvm::Constant::getNullValue(llvm::Type::getInt64Ty(VMContext));
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Builder.CreateStore(zeroConstant, IndexPtr);
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// Start the loop with a block that tests the condition.
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llvm::BasicBlock *CondBlock = createBasicBlock("for.cond");
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llvm::BasicBlock *AfterFor = createBasicBlock("for.end");
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EmitBlock(CondBlock);
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llvm::BasicBlock *ForBody = createBasicBlock("for.body");
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// Generate: if (loop-index < number-of-elements fall to the loop body,
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// otherwise, go to the block after the for-loop.
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uint64_t NumElements = getContext().getConstantArrayElementCount(CA);
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llvm::Value * NumElementsPtr =
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llvm::ConstantInt::get(llvm::Type::getInt64Ty(VMContext), NumElements);
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llvm::Value *Counter = Builder.CreateLoad(IndexPtr);
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llvm::Value *IsLess = Builder.CreateICmpULT(Counter, NumElementsPtr,
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"isless");
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// If the condition is true, execute the body.
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Builder.CreateCondBr(IsLess, ForBody, AfterFor);
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EmitBlock(ForBody);
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llvm::BasicBlock *ContinueBlock = createBasicBlock("for.inc");
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// Inside the loop body, emit the assignment operator call on array element.
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Counter = Builder.CreateLoad(IndexPtr);
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Src = Builder.CreateInBoundsGEP(Src, Counter, "srcaddress");
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Dest = Builder.CreateInBoundsGEP(Dest, Counter, "destaddress");
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const CXXMethodDecl *MD = 0;
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if (BitwiseAssign)
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EmitAggregateCopy(Dest, Src, Ty);
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else {
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bool hasCopyAssign = BaseClassDecl->hasConstCopyAssignment(getContext(),
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MD);
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assert(hasCopyAssign && "EmitClassAggrCopyAssignment - No user assign");
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(void)hasCopyAssign;
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const FunctionProtoType *FPT = MD->getType()->getAs<FunctionProtoType>();
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const llvm::Type *LTy =
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CGM.getTypes().GetFunctionType(CGM.getTypes().getFunctionInfo(MD),
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FPT->isVariadic());
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llvm::Constant *Callee = CGM.GetAddrOfFunction(MD, LTy);
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CallArgList CallArgs;
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// Push the this (Dest) ptr.
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CallArgs.push_back(std::make_pair(RValue::get(Dest),
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MD->getThisType(getContext())));
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// Push the Src ptr.
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CallArgs.push_back(std::make_pair(RValue::get(Src),
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MD->getParamDecl(0)->getType()));
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QualType ResultType = MD->getType()->getAs<FunctionType>()->getResultType();
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EmitCall(CGM.getTypes().getFunctionInfo(ResultType, CallArgs),
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Callee, ReturnValueSlot(), CallArgs, MD);
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}
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EmitBlock(ContinueBlock);
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// Emit the increment of the loop counter.
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llvm::Value *NextVal = llvm::ConstantInt::get(Counter->getType(), 1);
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Counter = Builder.CreateLoad(IndexPtr);
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NextVal = Builder.CreateAdd(Counter, NextVal, "inc");
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Builder.CreateStore(NextVal, IndexPtr);
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// Finally, branch back up to the condition for the next iteration.
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EmitBranch(CondBlock);
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// Emit the fall-through block.
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EmitBlock(AfterFor, true);
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}
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/// EmitClassMemberwiseCopy - This routine generates code to copy a class
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/// object from SrcValue to DestValue. Copying can be either a bitwise copy
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/// or via a copy constructor call.
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void CodeGenFunction::EmitClassMemberwiseCopy(
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llvm::Value *Dest, llvm::Value *Src,
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const CXXRecordDecl *ClassDecl,
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const CXXRecordDecl *BaseClassDecl, QualType Ty) {
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if (ClassDecl) {
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Dest = GetAddressOfBaseClass(Dest, ClassDecl, BaseClassDecl,
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/*NullCheckValue=*/false);
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Src = GetAddressOfBaseClass(Src, ClassDecl, BaseClassDecl,
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/*NullCheckValue=*/false);
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}
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if (BaseClassDecl->hasTrivialCopyConstructor()) {
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EmitAggregateCopy(Dest, Src, Ty);
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return;
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}
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if (CXXConstructorDecl *BaseCopyCtor =
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BaseClassDecl->getCopyConstructor(getContext(), 0)) {
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llvm::Value *Callee = CGM.GetAddrOfCXXConstructor(BaseCopyCtor,
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Ctor_Complete);
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CallArgList CallArgs;
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// Push the this (Dest) ptr.
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CallArgs.push_back(std::make_pair(RValue::get(Dest),
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BaseCopyCtor->getThisType(getContext())));
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// Push the Src ptr.
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CallArgs.push_back(std::make_pair(RValue::get(Src),
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BaseCopyCtor->getParamDecl(0)->getType()));
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QualType ResultType =
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BaseCopyCtor->getType()->getAs<FunctionType>()->getResultType();
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EmitCall(CGM.getTypes().getFunctionInfo(ResultType, CallArgs),
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Callee, ReturnValueSlot(), CallArgs, BaseCopyCtor);
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}
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}
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/// EmitClassCopyAssignment - This routine generates code to copy assign a class
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/// object from SrcValue to DestValue. Assignment can be either a bitwise
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/// assignment of via an assignment operator call.
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// FIXME. Consolidate this with EmitClassMemberwiseCopy as they share a lot.
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void CodeGenFunction::EmitClassCopyAssignment(
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llvm::Value *Dest, llvm::Value *Src,
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const CXXRecordDecl *ClassDecl,
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const CXXRecordDecl *BaseClassDecl,
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QualType Ty) {
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if (ClassDecl) {
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Dest = GetAddressOfBaseClass(Dest, ClassDecl, BaseClassDecl,
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/*NullCheckValue=*/false);
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Src = GetAddressOfBaseClass(Src, ClassDecl, BaseClassDecl,
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/*NullCheckValue=*/false);
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}
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if (BaseClassDecl->hasTrivialCopyAssignment()) {
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EmitAggregateCopy(Dest, Src, Ty);
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return;
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}
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const CXXMethodDecl *MD = 0;
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bool ConstCopyAssignOp = BaseClassDecl->hasConstCopyAssignment(getContext(),
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MD);
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assert(ConstCopyAssignOp && "EmitClassCopyAssignment - missing copy assign");
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(void)ConstCopyAssignOp;
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const FunctionProtoType *FPT = MD->getType()->getAs<FunctionProtoType>();
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const llvm::Type *LTy =
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CGM.getTypes().GetFunctionType(CGM.getTypes().getFunctionInfo(MD),
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FPT->isVariadic());
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llvm::Constant *Callee = CGM.GetAddrOfFunction(MD, LTy);
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CallArgList CallArgs;
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// Push the this (Dest) ptr.
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CallArgs.push_back(std::make_pair(RValue::get(Dest),
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MD->getThisType(getContext())));
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// Push the Src ptr.
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CallArgs.push_back(std::make_pair(RValue::get(Src),
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MD->getParamDecl(0)->getType()));
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QualType ResultType =
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MD->getType()->getAs<FunctionType>()->getResultType();
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EmitCall(CGM.getTypes().getFunctionInfo(ResultType, CallArgs),
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Callee, ReturnValueSlot(), CallArgs, MD);
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}
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/// SynthesizeDefaultConstructor - synthesize a default constructor
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void
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CodeGenFunction::SynthesizeDefaultConstructor(const CXXConstructorDecl *Ctor,
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CXXCtorType Type,
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llvm::Function *Fn,
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const FunctionArgList &Args) {
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assert(!Ctor->isTrivial() && "shouldn't need to generate trivial ctor");
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StartFunction(GlobalDecl(Ctor, Type), Ctor->getResultType(), Fn, Args,
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SourceLocation());
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EmitCtorPrologue(Ctor, Type);
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FinishFunction();
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}
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/// SynthesizeCXXCopyConstructor - This routine implicitly defines body of a
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/// copy constructor, in accordance with section 12.8 (p7 and p8) of C++03
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/// The implicitly-defined copy constructor for class X performs a memberwise
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/// copy of its subobjects. The order of copying is the same as the order of
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/// initialization of bases and members in a user-defined constructor
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/// Each subobject is copied in the manner appropriate to its type:
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/// if the subobject is of class type, the copy constructor for the class is
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/// used;
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/// if the subobject is an array, each element is copied, in the manner
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/// appropriate to the element type;
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/// if the subobject is of scalar type, the built-in assignment operator is
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/// used.
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/// Virtual base class subobjects shall be copied only once by the
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/// implicitly-defined copy constructor
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void
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CodeGenFunction::SynthesizeCXXCopyConstructor(const CXXConstructorDecl *Ctor,
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CXXCtorType Type,
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llvm::Function *Fn,
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const FunctionArgList &Args) {
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const CXXRecordDecl *ClassDecl = Ctor->getParent();
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assert(!ClassDecl->hasUserDeclaredCopyConstructor() &&
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"SynthesizeCXXCopyConstructor - copy constructor has definition already");
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assert(!Ctor->isTrivial() && "shouldn't need to generate trivial ctor");
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StartFunction(GlobalDecl(Ctor, Type), Ctor->getResultType(), Fn, Args,
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SourceLocation());
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FunctionArgList::const_iterator i = Args.begin();
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const VarDecl *ThisArg = i->first;
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llvm::Value *ThisObj = GetAddrOfLocalVar(ThisArg);
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llvm::Value *LoadOfThis = Builder.CreateLoad(ThisObj, "this");
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const VarDecl *SrcArg = (i+1)->first;
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llvm::Value *SrcObj = GetAddrOfLocalVar(SrcArg);
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llvm::Value *LoadOfSrc = Builder.CreateLoad(SrcObj);
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for (CXXRecordDecl::base_class_const_iterator Base = ClassDecl->bases_begin();
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Base != ClassDecl->bases_end(); ++Base) {
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// FIXME. copy constrution of virtual base NYI
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if (Base->isVirtual())
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continue;
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CXXRecordDecl *BaseClassDecl
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= cast<CXXRecordDecl>(Base->getType()->getAs<RecordType>()->getDecl());
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EmitClassMemberwiseCopy(LoadOfThis, LoadOfSrc, ClassDecl, BaseClassDecl,
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Base->getType());
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}
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for (CXXRecordDecl::field_iterator I = ClassDecl->field_begin(),
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E = ClassDecl->field_end(); I != E; ++I) {
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const FieldDecl *Field = *I;
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QualType FieldType = getContext().getCanonicalType(Field->getType());
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const ConstantArrayType *Array =
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getContext().getAsConstantArrayType(FieldType);
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if (Array)
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FieldType = getContext().getBaseElementType(FieldType);
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if (const RecordType *FieldClassType = FieldType->getAs<RecordType>()) {
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CXXRecordDecl *FieldClassDecl
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= cast<CXXRecordDecl>(FieldClassType->getDecl());
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LValue LHS = EmitLValueForField(LoadOfThis, Field, false, 0);
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LValue RHS = EmitLValueForField(LoadOfSrc, Field, false, 0);
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if (Array) {
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const llvm::Type *BasePtr = ConvertType(FieldType);
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BasePtr = llvm::PointerType::getUnqual(BasePtr);
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llvm::Value *DestBaseAddrPtr =
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Builder.CreateBitCast(LHS.getAddress(), BasePtr);
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llvm::Value *SrcBaseAddrPtr =
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Builder.CreateBitCast(RHS.getAddress(), BasePtr);
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EmitClassAggrMemberwiseCopy(DestBaseAddrPtr, SrcBaseAddrPtr, Array,
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FieldClassDecl, FieldType);
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}
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else
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EmitClassMemberwiseCopy(LHS.getAddress(), RHS.getAddress(),
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0 /*ClassDecl*/, FieldClassDecl, FieldType);
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continue;
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}
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if (Field->getType()->isReferenceType()) {
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unsigned FieldIndex = CGM.getTypes().getLLVMFieldNo(Field);
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llvm::Value *LHS = Builder.CreateStructGEP(LoadOfThis, FieldIndex,
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"lhs.ref");
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llvm::Value *RHS = Builder.CreateStructGEP(LoadOfThis, FieldIndex,
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"rhs.ref");
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// Load the value in RHS.
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RHS = Builder.CreateLoad(RHS);
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// And store it in the LHS
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Builder.CreateStore(RHS, LHS);
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continue;
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}
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// Do a built-in assignment of scalar data members.
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LValue LHS = EmitLValueForField(LoadOfThis, Field, false, 0);
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LValue RHS = EmitLValueForField(LoadOfSrc, Field, false, 0);
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if (!hasAggregateLLVMType(Field->getType())) {
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RValue RVRHS = EmitLoadOfLValue(RHS, Field->getType());
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EmitStoreThroughLValue(RVRHS, LHS, Field->getType());
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} else if (Field->getType()->isAnyComplexType()) {
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ComplexPairTy Pair = LoadComplexFromAddr(RHS.getAddress(),
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RHS.isVolatileQualified());
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StoreComplexToAddr(Pair, LHS.getAddress(), LHS.isVolatileQualified());
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} else {
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EmitAggregateCopy(LHS.getAddress(), RHS.getAddress(), Field->getType());
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}
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}
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InitializeVtablePtrs(ClassDecl);
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FinishFunction();
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}
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/// SynthesizeCXXCopyAssignment - Implicitly define copy assignment operator.
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/// Before the implicitly-declared copy assignment operator for a class is
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/// implicitly defined, all implicitly- declared copy assignment operators for
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/// its direct base classes and its nonstatic data members shall have been
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/// implicitly defined. [12.8-p12]
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/// The implicitly-defined copy assignment operator for class X performs
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/// memberwise assignment of its subob- jects. The direct base classes of X are
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/// assigned first, in the order of their declaration in
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/// the base-specifier-list, and then the immediate nonstatic data members of X
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/// are assigned, in the order in which they were declared in the class
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/// definition.Each subobject is assigned in the manner appropriate to its type:
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/// if the subobject is of class type, the copy assignment operator for the
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/// class is used (as if by explicit qualification; that is, ignoring any
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/// possible virtual overriding functions in more derived classes);
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///
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/// if the subobject is an array, each element is assigned, in the manner
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/// appropriate to the element type;
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///
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/// if the subobject is of scalar type, the built-in assignment operator is
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/// used.
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void CodeGenFunction::SynthesizeCXXCopyAssignment(const CXXMethodDecl *CD,
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llvm::Function *Fn,
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const FunctionArgList &Args) {
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const CXXRecordDecl *ClassDecl = cast<CXXRecordDecl>(CD->getDeclContext());
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assert(!ClassDecl->hasUserDeclaredCopyAssignment() &&
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"SynthesizeCXXCopyAssignment - copy assignment has user declaration");
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StartFunction(CD, CD->getResultType(), Fn, Args, SourceLocation());
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FunctionArgList::const_iterator i = Args.begin();
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const VarDecl *ThisArg = i->first;
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llvm::Value *ThisObj = GetAddrOfLocalVar(ThisArg);
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llvm::Value *LoadOfThis = Builder.CreateLoad(ThisObj, "this");
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const VarDecl *SrcArg = (i+1)->first;
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llvm::Value *SrcObj = GetAddrOfLocalVar(SrcArg);
|
||||
llvm::Value *LoadOfSrc = Builder.CreateLoad(SrcObj);
|
||||
|
||||
for (CXXRecordDecl::base_class_const_iterator Base = ClassDecl->bases_begin();
|
||||
Base != ClassDecl->bases_end(); ++Base) {
|
||||
// FIXME. copy assignment of virtual base NYI
|
||||
if (Base->isVirtual())
|
||||
continue;
|
||||
|
||||
CXXRecordDecl *BaseClassDecl
|
||||
= cast<CXXRecordDecl>(Base->getType()->getAs<RecordType>()->getDecl());
|
||||
EmitClassCopyAssignment(LoadOfThis, LoadOfSrc, ClassDecl, BaseClassDecl,
|
||||
Base->getType());
|
||||
}
|
||||
|
||||
for (CXXRecordDecl::field_iterator Field = ClassDecl->field_begin(),
|
||||
FieldEnd = ClassDecl->field_end();
|
||||
Field != FieldEnd; ++Field) {
|
||||
QualType FieldType = getContext().getCanonicalType((*Field)->getType());
|
||||
const ConstantArrayType *Array =
|
||||
getContext().getAsConstantArrayType(FieldType);
|
||||
if (Array)
|
||||
FieldType = getContext().getBaseElementType(FieldType);
|
||||
|
||||
if (const RecordType *FieldClassType = FieldType->getAs<RecordType>()) {
|
||||
CXXRecordDecl *FieldClassDecl
|
||||
= cast<CXXRecordDecl>(FieldClassType->getDecl());
|
||||
LValue LHS = EmitLValueForField(LoadOfThis, *Field, false, 0);
|
||||
LValue RHS = EmitLValueForField(LoadOfSrc, *Field, false, 0);
|
||||
if (Array) {
|
||||
const llvm::Type *BasePtr = ConvertType(FieldType);
|
||||
BasePtr = llvm::PointerType::getUnqual(BasePtr);
|
||||
llvm::Value *DestBaseAddrPtr =
|
||||
Builder.CreateBitCast(LHS.getAddress(), BasePtr);
|
||||
llvm::Value *SrcBaseAddrPtr =
|
||||
Builder.CreateBitCast(RHS.getAddress(), BasePtr);
|
||||
EmitClassAggrCopyAssignment(DestBaseAddrPtr, SrcBaseAddrPtr, Array,
|
||||
FieldClassDecl, FieldType);
|
||||
}
|
||||
else
|
||||
EmitClassCopyAssignment(LHS.getAddress(), RHS.getAddress(),
|
||||
0 /*ClassDecl*/, FieldClassDecl, FieldType);
|
||||
continue;
|
||||
}
|
||||
// Do a built-in assignment of scalar data members.
|
||||
LValue LHS = EmitLValueForField(LoadOfThis, *Field, false, 0);
|
||||
LValue RHS = EmitLValueForField(LoadOfSrc, *Field, false, 0);
|
||||
if (!hasAggregateLLVMType(Field->getType())) {
|
||||
RValue RVRHS = EmitLoadOfLValue(RHS, Field->getType());
|
||||
EmitStoreThroughLValue(RVRHS, LHS, Field->getType());
|
||||
} else if (Field->getType()->isAnyComplexType()) {
|
||||
ComplexPairTy Pair = LoadComplexFromAddr(RHS.getAddress(),
|
||||
RHS.isVolatileQualified());
|
||||
StoreComplexToAddr(Pair, LHS.getAddress(), LHS.isVolatileQualified());
|
||||
} else {
|
||||
EmitAggregateCopy(LHS.getAddress(), RHS.getAddress(), Field->getType());
|
||||
}
|
||||
}
|
||||
|
||||
// return *this;
|
||||
Builder.CreateStore(LoadOfThis, ReturnValue);
|
||||
|
||||
FinishFunction();
|
||||
}
|
||||
|
||||
static void EmitBaseInitializer(CodeGenFunction &CGF,
|
||||
const CXXRecordDecl *ClassDecl,
|
||||
CXXBaseOrMemberInitializer *BaseInit,
|
||||
CXXCtorType CtorType) {
|
||||
assert(BaseInit->isBaseInitializer() &&
|
||||
"Must have base initializer!");
|
||||
|
||||
llvm::Value *ThisPtr = CGF.LoadCXXThis();
|
||||
|
||||
const Type *BaseType = BaseInit->getBaseClass();
|
||||
CXXRecordDecl *BaseClassDecl =
|
||||
cast<CXXRecordDecl>(BaseType->getAs<RecordType>()->getDecl());
|
||||
|
||||
// FIXME: This method of determining whether a base is virtual is ridiculous;
|
||||
// it should be part of BaseInit.
|
||||
bool isBaseVirtual = false;
|
||||
for (CXXRecordDecl::base_class_const_iterator I = ClassDecl->vbases_begin(),
|
||||
E = ClassDecl->vbases_end(); I != E; ++I)
|
||||
if (I->getType()->getAs<RecordType>()->getDecl() == BaseClassDecl) {
|
||||
isBaseVirtual = true;
|
||||
break;
|
||||
}
|
||||
|
||||
// The base constructor doesn't construct virtual bases.
|
||||
if (CtorType == Ctor_Base && isBaseVirtual)
|
||||
return;
|
||||
|
||||
// Compute the offset to the base; we do this directly instead of using
|
||||
// GetAddressOfBaseClass because the class doesn't have a vtable pointer
|
||||
// at this point.
|
||||
// FIXME: This could be refactored back into GetAddressOfBaseClass if it took
|
||||
// an extra parameter for whether the derived class is the complete object
|
||||
// class.
|
||||
const ASTRecordLayout &Layout =
|
||||
CGF.getContext().getASTRecordLayout(ClassDecl);
|
||||
uint64_t Offset;
|
||||
if (isBaseVirtual)
|
||||
Offset = Layout.getVBaseClassOffset(BaseClassDecl);
|
||||
else
|
||||
Offset = Layout.getBaseClassOffset(BaseClassDecl);
|
||||
const llvm::Type *Int8PtrTy = llvm::Type::getInt8PtrTy(CGF.getLLVMContext());
|
||||
const llvm::Type *BaseClassType = CGF.ConvertType(QualType(BaseType, 0));
|
||||
llvm::Value *V = CGF.Builder.CreateBitCast(ThisPtr, Int8PtrTy);
|
||||
V = CGF.Builder.CreateConstInBoundsGEP1_64(V, Offset/8);
|
||||
V = CGF.Builder.CreateBitCast(V, BaseClassType->getPointerTo());
|
||||
|
||||
// FIXME: This should always use Ctor_Base as the ctor type! (But that
|
||||
// causes crashes in tests.)
|
||||
CGF.EmitCXXConstructorCall(BaseInit->getConstructor(),
|
||||
CtorType, V,
|
||||
BaseInit->const_arg_begin(),
|
||||
BaseInit->const_arg_end());
|
||||
}
|
||||
|
||||
static void EmitMemberInitializer(CodeGenFunction &CGF,
|
||||
const CXXRecordDecl *ClassDecl,
|
||||
CXXBaseOrMemberInitializer *MemberInit) {
|
||||
assert(MemberInit->isMemberInitializer() &&
|
||||
"Must have member initializer!");
|
||||
|
||||
// non-static data member initializers.
|
||||
FieldDecl *Field = MemberInit->getMember();
|
||||
QualType FieldType = CGF.getContext().getCanonicalType(Field->getType());
|
||||
|
||||
llvm::Value *ThisPtr = CGF.LoadCXXThis();
|
||||
LValue LHS;
|
||||
if (FieldType->isReferenceType()) {
|
||||
// FIXME: This is really ugly; should be refactored somehow
|
||||
unsigned idx = CGF.CGM.getTypes().getLLVMFieldNo(Field);
|
||||
llvm::Value *V = CGF.Builder.CreateStructGEP(ThisPtr, idx, "tmp");
|
||||
assert(!FieldType.getObjCGCAttr() && "fields cannot have GC attrs");
|
||||
LHS = LValue::MakeAddr(V, CGF.MakeQualifiers(FieldType));
|
||||
} else {
|
||||
LHS = CGF.EmitLValueForField(ThisPtr, Field, ClassDecl->isUnion(), 0);
|
||||
}
|
||||
|
||||
// If we are initializing an anonymous union field, drill down to the field.
|
||||
if (MemberInit->getAnonUnionMember()) {
|
||||
Field = MemberInit->getAnonUnionMember();
|
||||
LHS = CGF.EmitLValueForField(LHS.getAddress(), Field,
|
||||
/*IsUnion=*/true, 0);
|
||||
FieldType = Field->getType();
|
||||
}
|
||||
|
||||
// If the field is an array, branch based on the element type.
|
||||
const ConstantArrayType *Array =
|
||||
CGF.getContext().getAsConstantArrayType(FieldType);
|
||||
if (Array)
|
||||
FieldType = CGF.getContext().getBaseElementType(FieldType);
|
||||
|
||||
// We lose the constructor for anonymous union members, so handle them
|
||||
// explicitly.
|
||||
// FIXME: This is somwhat ugly.
|
||||
if (MemberInit->getAnonUnionMember() && FieldType->getAs<RecordType>()) {
|
||||
if (MemberInit->getNumArgs())
|
||||
CGF.EmitAggExpr(*MemberInit->arg_begin(), LHS.getAddress(),
|
||||
LHS.isVolatileQualified());
|
||||
else
|
||||
CGF.EmitAggregateClear(LHS.getAddress(), Field->getType());
|
||||
return;
|
||||
}
|
||||
|
||||
if (FieldType->getAs<RecordType>()) {
|
||||
assert(MemberInit->getConstructor() &&
|
||||
"EmitCtorPrologue - no constructor to initialize member");
|
||||
if (Array) {
|
||||
const llvm::Type *BasePtr = CGF.ConvertType(FieldType);
|
||||
BasePtr = llvm::PointerType::getUnqual(BasePtr);
|
||||
llvm::Value *BaseAddrPtr =
|
||||
CGF.Builder.CreateBitCast(LHS.getAddress(), BasePtr);
|
||||
CGF.EmitCXXAggrConstructorCall(MemberInit->getConstructor(),
|
||||
Array, BaseAddrPtr,
|
||||
MemberInit->const_arg_begin(),
|
||||
MemberInit->const_arg_end());
|
||||
}
|
||||
else
|
||||
CGF.EmitCXXConstructorCall(MemberInit->getConstructor(),
|
||||
Ctor_Complete, LHS.getAddress(),
|
||||
MemberInit->const_arg_begin(),
|
||||
MemberInit->const_arg_end());
|
||||
return;
|
||||
}
|
||||
|
||||
assert(MemberInit->getNumArgs() == 1 && "Initializer count must be 1 only");
|
||||
Expr *RhsExpr = *MemberInit->arg_begin();
|
||||
RValue RHS;
|
||||
if (FieldType->isReferenceType()) {
|
||||
RHS = CGF.EmitReferenceBindingToExpr(RhsExpr, FieldType,
|
||||
/*IsInitializer=*/true);
|
||||
CGF.EmitStoreThroughLValue(RHS, LHS, FieldType);
|
||||
} else if (Array) {
|
||||
CGF.EmitMemSetToZero(LHS.getAddress(), Field->getType());
|
||||
} else if (!CGF.hasAggregateLLVMType(RhsExpr->getType())) {
|
||||
RHS = RValue::get(CGF.EmitScalarExpr(RhsExpr, true));
|
||||
CGF.EmitStoreThroughLValue(RHS, LHS, FieldType);
|
||||
} else if (RhsExpr->getType()->isAnyComplexType()) {
|
||||
CGF.EmitComplexExprIntoAddr(RhsExpr, LHS.getAddress(),
|
||||
LHS.isVolatileQualified());
|
||||
} else {
|
||||
// Handle member function pointers; other aggregates shouldn't get this far.
|
||||
CGF.EmitAggExpr(RhsExpr, LHS.getAddress(), LHS.isVolatileQualified());
|
||||
}
|
||||
}
|
||||
|
||||
/// EmitCtorPrologue - This routine generates necessary code to initialize
|
||||
/// base classes and non-static data members belonging to this constructor.
|
||||
/// FIXME: This needs to take a CXXCtorType.
|
||||
void CodeGenFunction::EmitCtorPrologue(const CXXConstructorDecl *CD,
|
||||
CXXCtorType CtorType) {
|
||||
const CXXRecordDecl *ClassDecl = CD->getParent();
|
||||
|
||||
// FIXME: Add vbase initialization
|
||||
|
||||
for (CXXConstructorDecl::init_const_iterator B = CD->init_begin(),
|
||||
E = CD->init_end();
|
||||
B != E; ++B) {
|
||||
CXXBaseOrMemberInitializer *Member = (*B);
|
||||
|
||||
assert(LiveTemporaries.empty() &&
|
||||
"Should not have any live temporaries at initializer start!");
|
||||
|
||||
if (Member->isBaseInitializer())
|
||||
EmitBaseInitializer(*this, ClassDecl, Member, CtorType);
|
||||
else
|
||||
EmitMemberInitializer(*this, ClassDecl, Member);
|
||||
|
||||
// Pop any live temporaries that the initializers might have pushed.
|
||||
while (!LiveTemporaries.empty())
|
||||
PopCXXTemporary();
|
||||
}
|
||||
|
||||
InitializeVtablePtrs(ClassDecl);
|
||||
}
|
||||
|
||||
void CodeGenFunction::InitializeVtablePtrs(const CXXRecordDecl *ClassDecl) {
|
||||
if (!ClassDecl->isDynamicClass())
|
||||
return;
|
||||
|
|
@ -1766,132 +1121,3 @@ void CodeGenFunction::InitializeVtablePtrsRecursive(
|
|||
Builder.CreateStore(VtableAddressPoint, VtableField);
|
||||
}
|
||||
|
||||
/// EmitDtorEpilogue - Emit all code that comes at the end of class's
|
||||
/// destructor. This is to call destructors on members and base classes
|
||||
/// in reverse order of their construction.
|
||||
/// FIXME: This needs to take a CXXDtorType.
|
||||
void CodeGenFunction::EmitDtorEpilogue(const CXXDestructorDecl *DD,
|
||||
CXXDtorType DtorType) {
|
||||
assert(!DD->isTrivial() &&
|
||||
"Should not emit dtor epilogue for trivial dtor!");
|
||||
|
||||
const CXXRecordDecl *ClassDecl = DD->getParent();
|
||||
|
||||
// Collect the fields.
|
||||
llvm::SmallVector<const FieldDecl *, 16> FieldDecls;
|
||||
for (CXXRecordDecl::field_iterator I = ClassDecl->field_begin(),
|
||||
E = ClassDecl->field_end(); I != E; ++I) {
|
||||
const FieldDecl *Field = *I;
|
||||
|
||||
QualType FieldType = getContext().getCanonicalType(Field->getType());
|
||||
FieldType = getContext().getBaseElementType(FieldType);
|
||||
|
||||
const RecordType *RT = FieldType->getAs<RecordType>();
|
||||
if (!RT)
|
||||
continue;
|
||||
|
||||
CXXRecordDecl *FieldClassDecl = cast<CXXRecordDecl>(RT->getDecl());
|
||||
if (FieldClassDecl->hasTrivialDestructor())
|
||||
continue;
|
||||
|
||||
FieldDecls.push_back(Field);
|
||||
}
|
||||
|
||||
// Now destroy the fields.
|
||||
for (size_t i = FieldDecls.size(); i > 0; --i) {
|
||||
const FieldDecl *Field = FieldDecls[i - 1];
|
||||
|
||||
QualType FieldType = Field->getType();
|
||||
const ConstantArrayType *Array =
|
||||
getContext().getAsConstantArrayType(FieldType);
|
||||
if (Array)
|
||||
FieldType = getContext().getBaseElementType(FieldType);
|
||||
|
||||
const RecordType *RT = FieldType->getAs<RecordType>();
|
||||
CXXRecordDecl *FieldClassDecl = cast<CXXRecordDecl>(RT->getDecl());
|
||||
|
||||
llvm::Value *ThisPtr = LoadCXXThis();
|
||||
|
||||
LValue LHS = EmitLValueForField(ThisPtr, Field,
|
||||
/*isUnion=*/false,
|
||||
// FIXME: Qualifiers?
|
||||
/*CVRQualifiers=*/0);
|
||||
if (Array) {
|
||||
const llvm::Type *BasePtr = ConvertType(FieldType);
|
||||
BasePtr = llvm::PointerType::getUnqual(BasePtr);
|
||||
llvm::Value *BaseAddrPtr =
|
||||
Builder.CreateBitCast(LHS.getAddress(), BasePtr);
|
||||
EmitCXXAggrDestructorCall(FieldClassDecl->getDestructor(getContext()),
|
||||
Array, BaseAddrPtr);
|
||||
} else
|
||||
EmitCXXDestructorCall(FieldClassDecl->getDestructor(getContext()),
|
||||
Dtor_Complete, LHS.getAddress());
|
||||
}
|
||||
|
||||
// Destroy non-virtual bases.
|
||||
for (CXXRecordDecl::reverse_base_class_const_iterator I =
|
||||
ClassDecl->bases_rbegin(), E = ClassDecl->bases_rend(); I != E; ++I) {
|
||||
const CXXBaseSpecifier &Base = *I;
|
||||
|
||||
// Ignore virtual bases.
|
||||
if (Base.isVirtual())
|
||||
continue;
|
||||
|
||||
CXXRecordDecl *BaseClassDecl
|
||||
= cast<CXXRecordDecl>(Base.getType()->getAs<RecordType>()->getDecl());
|
||||
|
||||
// Ignore trivial destructors.
|
||||
if (BaseClassDecl->hasTrivialDestructor())
|
||||
continue;
|
||||
const CXXDestructorDecl *D = BaseClassDecl->getDestructor(getContext());
|
||||
|
||||
llvm::Value *V = GetAddressOfBaseClass(LoadCXXThis(),
|
||||
ClassDecl, BaseClassDecl,
|
||||
/*NullCheckValue=*/false);
|
||||
EmitCXXDestructorCall(D, Dtor_Base, V);
|
||||
}
|
||||
|
||||
// If we're emitting a base destructor, we don't want to emit calls to the
|
||||
// virtual bases.
|
||||
if (DtorType == Dtor_Base)
|
||||
return;
|
||||
|
||||
// Handle virtual bases.
|
||||
for (CXXRecordDecl::reverse_base_class_const_iterator I =
|
||||
ClassDecl->vbases_rbegin(), E = ClassDecl->vbases_rend(); I != E; ++I) {
|
||||
const CXXBaseSpecifier &Base = *I;
|
||||
CXXRecordDecl *BaseClassDecl
|
||||
= cast<CXXRecordDecl>(Base.getType()->getAs<RecordType>()->getDecl());
|
||||
|
||||
// Ignore trivial destructors.
|
||||
if (BaseClassDecl->hasTrivialDestructor())
|
||||
continue;
|
||||
const CXXDestructorDecl *D = BaseClassDecl->getDestructor(getContext());
|
||||
llvm::Value *V = GetAddressOfBaseClass(LoadCXXThis(),
|
||||
ClassDecl, BaseClassDecl,
|
||||
/*NullCheckValue=*/false);
|
||||
EmitCXXDestructorCall(D, Dtor_Base, V);
|
||||
}
|
||||
|
||||
// If we have a deleting destructor, emit a call to the delete operator.
|
||||
if (DtorType == Dtor_Deleting) {
|
||||
assert(DD->getOperatorDelete() &&
|
||||
"operator delete missing - EmitDtorEpilogue");
|
||||
EmitDeleteCall(DD->getOperatorDelete(), LoadCXXThis(),
|
||||
getContext().getTagDeclType(ClassDecl));
|
||||
}
|
||||
}
|
||||
|
||||
void CodeGenFunction::SynthesizeDefaultDestructor(const CXXDestructorDecl *Dtor,
|
||||
CXXDtorType DtorType,
|
||||
llvm::Function *Fn,
|
||||
const FunctionArgList &Args) {
|
||||
assert(!Dtor->getParent()->hasUserDeclaredDestructor() &&
|
||||
"SynthesizeDefaultDestructor - destructor has user declaration");
|
||||
|
||||
StartFunction(GlobalDecl(Dtor, DtorType), Dtor->getResultType(), Fn, Args,
|
||||
SourceLocation());
|
||||
|
||||
EmitDtorEpilogue(Dtor, DtorType);
|
||||
FinishFunction();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -269,3 +269,778 @@ CodeGenFunction::GetAddressOfDerivedClass(llvm::Value *Value,
|
|||
|
||||
return Value;
|
||||
}
|
||||
|
||||
/// EmitClassAggrMemberwiseCopy - This routine generates code to copy a class
|
||||
/// array of objects from SrcValue to DestValue. Copying can be either a bitwise
|
||||
/// copy or via a copy constructor call.
|
||||
// FIXME. Consolidate this with EmitCXXAggrConstructorCall.
|
||||
void CodeGenFunction::EmitClassAggrMemberwiseCopy(llvm::Value *Dest,
|
||||
llvm::Value *Src,
|
||||
const ArrayType *Array,
|
||||
const CXXRecordDecl *BaseClassDecl,
|
||||
QualType Ty) {
|
||||
const ConstantArrayType *CA = dyn_cast<ConstantArrayType>(Array);
|
||||
assert(CA && "VLA cannot be copied over");
|
||||
bool BitwiseCopy = BaseClassDecl->hasTrivialCopyConstructor();
|
||||
|
||||
// Create a temporary for the loop index and initialize it with 0.
|
||||
llvm::Value *IndexPtr = CreateTempAlloca(llvm::Type::getInt64Ty(VMContext),
|
||||
"loop.index");
|
||||
llvm::Value* zeroConstant =
|
||||
llvm::Constant::getNullValue(llvm::Type::getInt64Ty(VMContext));
|
||||
Builder.CreateStore(zeroConstant, IndexPtr);
|
||||
// Start the loop with a block that tests the condition.
|
||||
llvm::BasicBlock *CondBlock = createBasicBlock("for.cond");
|
||||
llvm::BasicBlock *AfterFor = createBasicBlock("for.end");
|
||||
|
||||
EmitBlock(CondBlock);
|
||||
|
||||
llvm::BasicBlock *ForBody = createBasicBlock("for.body");
|
||||
// Generate: if (loop-index < number-of-elements fall to the loop body,
|
||||
// otherwise, go to the block after the for-loop.
|
||||
uint64_t NumElements = getContext().getConstantArrayElementCount(CA);
|
||||
llvm::Value * NumElementsPtr =
|
||||
llvm::ConstantInt::get(llvm::Type::getInt64Ty(VMContext), NumElements);
|
||||
llvm::Value *Counter = Builder.CreateLoad(IndexPtr);
|
||||
llvm::Value *IsLess = Builder.CreateICmpULT(Counter, NumElementsPtr,
|
||||
"isless");
|
||||
// If the condition is true, execute the body.
|
||||
Builder.CreateCondBr(IsLess, ForBody, AfterFor);
|
||||
|
||||
EmitBlock(ForBody);
|
||||
llvm::BasicBlock *ContinueBlock = createBasicBlock("for.inc");
|
||||
// Inside the loop body, emit the constructor call on the array element.
|
||||
Counter = Builder.CreateLoad(IndexPtr);
|
||||
Src = Builder.CreateInBoundsGEP(Src, Counter, "srcaddress");
|
||||
Dest = Builder.CreateInBoundsGEP(Dest, Counter, "destaddress");
|
||||
if (BitwiseCopy)
|
||||
EmitAggregateCopy(Dest, Src, Ty);
|
||||
else if (CXXConstructorDecl *BaseCopyCtor =
|
||||
BaseClassDecl->getCopyConstructor(getContext(), 0)) {
|
||||
llvm::Value *Callee = CGM.GetAddrOfCXXConstructor(BaseCopyCtor,
|
||||
Ctor_Complete);
|
||||
CallArgList CallArgs;
|
||||
// Push the this (Dest) ptr.
|
||||
CallArgs.push_back(std::make_pair(RValue::get(Dest),
|
||||
BaseCopyCtor->getThisType(getContext())));
|
||||
|
||||
// Push the Src ptr.
|
||||
CallArgs.push_back(std::make_pair(RValue::get(Src),
|
||||
BaseCopyCtor->getParamDecl(0)->getType()));
|
||||
QualType ResultType =
|
||||
BaseCopyCtor->getType()->getAs<FunctionType>()->getResultType();
|
||||
EmitCall(CGM.getTypes().getFunctionInfo(ResultType, CallArgs),
|
||||
Callee, ReturnValueSlot(), CallArgs, BaseCopyCtor);
|
||||
}
|
||||
EmitBlock(ContinueBlock);
|
||||
|
||||
// Emit the increment of the loop counter.
|
||||
llvm::Value *NextVal = llvm::ConstantInt::get(Counter->getType(), 1);
|
||||
Counter = Builder.CreateLoad(IndexPtr);
|
||||
NextVal = Builder.CreateAdd(Counter, NextVal, "inc");
|
||||
Builder.CreateStore(NextVal, IndexPtr);
|
||||
|
||||
// Finally, branch back up to the condition for the next iteration.
|
||||
EmitBranch(CondBlock);
|
||||
|
||||
// Emit the fall-through block.
|
||||
EmitBlock(AfterFor, true);
|
||||
}
|
||||
|
||||
/// EmitClassAggrCopyAssignment - This routine generates code to assign a class
|
||||
/// array of objects from SrcValue to DestValue. Assignment can be either a
|
||||
/// bitwise assignment or via a copy assignment operator function call.
|
||||
/// FIXME. This can be consolidated with EmitClassAggrMemberwiseCopy
|
||||
void CodeGenFunction::EmitClassAggrCopyAssignment(llvm::Value *Dest,
|
||||
llvm::Value *Src,
|
||||
const ArrayType *Array,
|
||||
const CXXRecordDecl *BaseClassDecl,
|
||||
QualType Ty) {
|
||||
const ConstantArrayType *CA = dyn_cast<ConstantArrayType>(Array);
|
||||
assert(CA && "VLA cannot be asssigned");
|
||||
bool BitwiseAssign = BaseClassDecl->hasTrivialCopyAssignment();
|
||||
|
||||
// Create a temporary for the loop index and initialize it with 0.
|
||||
llvm::Value *IndexPtr = CreateTempAlloca(llvm::Type::getInt64Ty(VMContext),
|
||||
"loop.index");
|
||||
llvm::Value* zeroConstant =
|
||||
llvm::Constant::getNullValue(llvm::Type::getInt64Ty(VMContext));
|
||||
Builder.CreateStore(zeroConstant, IndexPtr);
|
||||
// Start the loop with a block that tests the condition.
|
||||
llvm::BasicBlock *CondBlock = createBasicBlock("for.cond");
|
||||
llvm::BasicBlock *AfterFor = createBasicBlock("for.end");
|
||||
|
||||
EmitBlock(CondBlock);
|
||||
|
||||
llvm::BasicBlock *ForBody = createBasicBlock("for.body");
|
||||
// Generate: if (loop-index < number-of-elements fall to the loop body,
|
||||
// otherwise, go to the block after the for-loop.
|
||||
uint64_t NumElements = getContext().getConstantArrayElementCount(CA);
|
||||
llvm::Value * NumElementsPtr =
|
||||
llvm::ConstantInt::get(llvm::Type::getInt64Ty(VMContext), NumElements);
|
||||
llvm::Value *Counter = Builder.CreateLoad(IndexPtr);
|
||||
llvm::Value *IsLess = Builder.CreateICmpULT(Counter, NumElementsPtr,
|
||||
"isless");
|
||||
// If the condition is true, execute the body.
|
||||
Builder.CreateCondBr(IsLess, ForBody, AfterFor);
|
||||
|
||||
EmitBlock(ForBody);
|
||||
llvm::BasicBlock *ContinueBlock = createBasicBlock("for.inc");
|
||||
// Inside the loop body, emit the assignment operator call on array element.
|
||||
Counter = Builder.CreateLoad(IndexPtr);
|
||||
Src = Builder.CreateInBoundsGEP(Src, Counter, "srcaddress");
|
||||
Dest = Builder.CreateInBoundsGEP(Dest, Counter, "destaddress");
|
||||
const CXXMethodDecl *MD = 0;
|
||||
if (BitwiseAssign)
|
||||
EmitAggregateCopy(Dest, Src, Ty);
|
||||
else {
|
||||
bool hasCopyAssign = BaseClassDecl->hasConstCopyAssignment(getContext(),
|
||||
MD);
|
||||
assert(hasCopyAssign && "EmitClassAggrCopyAssignment - No user assign");
|
||||
(void)hasCopyAssign;
|
||||
const FunctionProtoType *FPT = MD->getType()->getAs<FunctionProtoType>();
|
||||
const llvm::Type *LTy =
|
||||
CGM.getTypes().GetFunctionType(CGM.getTypes().getFunctionInfo(MD),
|
||||
FPT->isVariadic());
|
||||
llvm::Constant *Callee = CGM.GetAddrOfFunction(MD, LTy);
|
||||
|
||||
CallArgList CallArgs;
|
||||
// Push the this (Dest) ptr.
|
||||
CallArgs.push_back(std::make_pair(RValue::get(Dest),
|
||||
MD->getThisType(getContext())));
|
||||
|
||||
// Push the Src ptr.
|
||||
CallArgs.push_back(std::make_pair(RValue::get(Src),
|
||||
MD->getParamDecl(0)->getType()));
|
||||
QualType ResultType = MD->getType()->getAs<FunctionType>()->getResultType();
|
||||
EmitCall(CGM.getTypes().getFunctionInfo(ResultType, CallArgs),
|
||||
Callee, ReturnValueSlot(), CallArgs, MD);
|
||||
}
|
||||
EmitBlock(ContinueBlock);
|
||||
|
||||
// Emit the increment of the loop counter.
|
||||
llvm::Value *NextVal = llvm::ConstantInt::get(Counter->getType(), 1);
|
||||
Counter = Builder.CreateLoad(IndexPtr);
|
||||
NextVal = Builder.CreateAdd(Counter, NextVal, "inc");
|
||||
Builder.CreateStore(NextVal, IndexPtr);
|
||||
|
||||
// Finally, branch back up to the condition for the next iteration.
|
||||
EmitBranch(CondBlock);
|
||||
|
||||
// Emit the fall-through block.
|
||||
EmitBlock(AfterFor, true);
|
||||
}
|
||||
|
||||
/// EmitClassMemberwiseCopy - This routine generates code to copy a class
|
||||
/// object from SrcValue to DestValue. Copying can be either a bitwise copy
|
||||
/// or via a copy constructor call.
|
||||
void CodeGenFunction::EmitClassMemberwiseCopy(
|
||||
llvm::Value *Dest, llvm::Value *Src,
|
||||
const CXXRecordDecl *ClassDecl,
|
||||
const CXXRecordDecl *BaseClassDecl, QualType Ty) {
|
||||
if (ClassDecl) {
|
||||
Dest = GetAddressOfBaseClass(Dest, ClassDecl, BaseClassDecl,
|
||||
/*NullCheckValue=*/false);
|
||||
Src = GetAddressOfBaseClass(Src, ClassDecl, BaseClassDecl,
|
||||
/*NullCheckValue=*/false);
|
||||
}
|
||||
if (BaseClassDecl->hasTrivialCopyConstructor()) {
|
||||
EmitAggregateCopy(Dest, Src, Ty);
|
||||
return;
|
||||
}
|
||||
|
||||
if (CXXConstructorDecl *BaseCopyCtor =
|
||||
BaseClassDecl->getCopyConstructor(getContext(), 0)) {
|
||||
llvm::Value *Callee = CGM.GetAddrOfCXXConstructor(BaseCopyCtor,
|
||||
Ctor_Complete);
|
||||
CallArgList CallArgs;
|
||||
// Push the this (Dest) ptr.
|
||||
CallArgs.push_back(std::make_pair(RValue::get(Dest),
|
||||
BaseCopyCtor->getThisType(getContext())));
|
||||
|
||||
// Push the Src ptr.
|
||||
CallArgs.push_back(std::make_pair(RValue::get(Src),
|
||||
BaseCopyCtor->getParamDecl(0)->getType()));
|
||||
QualType ResultType =
|
||||
BaseCopyCtor->getType()->getAs<FunctionType>()->getResultType();
|
||||
EmitCall(CGM.getTypes().getFunctionInfo(ResultType, CallArgs),
|
||||
Callee, ReturnValueSlot(), CallArgs, BaseCopyCtor);
|
||||
}
|
||||
}
|
||||
|
||||
/// EmitClassCopyAssignment - This routine generates code to copy assign a class
|
||||
/// object from SrcValue to DestValue. Assignment can be either a bitwise
|
||||
/// assignment of via an assignment operator call.
|
||||
// FIXME. Consolidate this with EmitClassMemberwiseCopy as they share a lot.
|
||||
void CodeGenFunction::EmitClassCopyAssignment(
|
||||
llvm::Value *Dest, llvm::Value *Src,
|
||||
const CXXRecordDecl *ClassDecl,
|
||||
const CXXRecordDecl *BaseClassDecl,
|
||||
QualType Ty) {
|
||||
if (ClassDecl) {
|
||||
Dest = GetAddressOfBaseClass(Dest, ClassDecl, BaseClassDecl,
|
||||
/*NullCheckValue=*/false);
|
||||
Src = GetAddressOfBaseClass(Src, ClassDecl, BaseClassDecl,
|
||||
/*NullCheckValue=*/false);
|
||||
}
|
||||
if (BaseClassDecl->hasTrivialCopyAssignment()) {
|
||||
EmitAggregateCopy(Dest, Src, Ty);
|
||||
return;
|
||||
}
|
||||
|
||||
const CXXMethodDecl *MD = 0;
|
||||
bool ConstCopyAssignOp = BaseClassDecl->hasConstCopyAssignment(getContext(),
|
||||
MD);
|
||||
assert(ConstCopyAssignOp && "EmitClassCopyAssignment - missing copy assign");
|
||||
(void)ConstCopyAssignOp;
|
||||
|
||||
const FunctionProtoType *FPT = MD->getType()->getAs<FunctionProtoType>();
|
||||
const llvm::Type *LTy =
|
||||
CGM.getTypes().GetFunctionType(CGM.getTypes().getFunctionInfo(MD),
|
||||
FPT->isVariadic());
|
||||
llvm::Constant *Callee = CGM.GetAddrOfFunction(MD, LTy);
|
||||
|
||||
CallArgList CallArgs;
|
||||
// Push the this (Dest) ptr.
|
||||
CallArgs.push_back(std::make_pair(RValue::get(Dest),
|
||||
MD->getThisType(getContext())));
|
||||
|
||||
// Push the Src ptr.
|
||||
CallArgs.push_back(std::make_pair(RValue::get(Src),
|
||||
MD->getParamDecl(0)->getType()));
|
||||
QualType ResultType =
|
||||
MD->getType()->getAs<FunctionType>()->getResultType();
|
||||
EmitCall(CGM.getTypes().getFunctionInfo(ResultType, CallArgs),
|
||||
Callee, ReturnValueSlot(), CallArgs, MD);
|
||||
}
|
||||
|
||||
/// SynthesizeDefaultConstructor - synthesize a default constructor
|
||||
void
|
||||
CodeGenFunction::SynthesizeDefaultConstructor(const CXXConstructorDecl *Ctor,
|
||||
CXXCtorType Type,
|
||||
llvm::Function *Fn,
|
||||
const FunctionArgList &Args) {
|
||||
assert(!Ctor->isTrivial() && "shouldn't need to generate trivial ctor");
|
||||
StartFunction(GlobalDecl(Ctor, Type), Ctor->getResultType(), Fn, Args,
|
||||
SourceLocation());
|
||||
EmitCtorPrologue(Ctor, Type);
|
||||
FinishFunction();
|
||||
}
|
||||
|
||||
/// SynthesizeCXXCopyConstructor - This routine implicitly defines body of a
|
||||
/// copy constructor, in accordance with section 12.8 (p7 and p8) of C++03
|
||||
/// The implicitly-defined copy constructor for class X performs a memberwise
|
||||
/// copy of its subobjects. The order of copying is the same as the order of
|
||||
/// initialization of bases and members in a user-defined constructor
|
||||
/// Each subobject is copied in the manner appropriate to its type:
|
||||
/// if the subobject is of class type, the copy constructor for the class is
|
||||
/// used;
|
||||
/// if the subobject is an array, each element is copied, in the manner
|
||||
/// appropriate to the element type;
|
||||
/// if the subobject is of scalar type, the built-in assignment operator is
|
||||
/// used.
|
||||
/// Virtual base class subobjects shall be copied only once by the
|
||||
/// implicitly-defined copy constructor
|
||||
|
||||
void
|
||||
CodeGenFunction::SynthesizeCXXCopyConstructor(const CXXConstructorDecl *Ctor,
|
||||
CXXCtorType Type,
|
||||
llvm::Function *Fn,
|
||||
const FunctionArgList &Args) {
|
||||
const CXXRecordDecl *ClassDecl = Ctor->getParent();
|
||||
assert(!ClassDecl->hasUserDeclaredCopyConstructor() &&
|
||||
"SynthesizeCXXCopyConstructor - copy constructor has definition already");
|
||||
assert(!Ctor->isTrivial() && "shouldn't need to generate trivial ctor");
|
||||
StartFunction(GlobalDecl(Ctor, Type), Ctor->getResultType(), Fn, Args,
|
||||
SourceLocation());
|
||||
|
||||
FunctionArgList::const_iterator i = Args.begin();
|
||||
const VarDecl *ThisArg = i->first;
|
||||
llvm::Value *ThisObj = GetAddrOfLocalVar(ThisArg);
|
||||
llvm::Value *LoadOfThis = Builder.CreateLoad(ThisObj, "this");
|
||||
const VarDecl *SrcArg = (i+1)->first;
|
||||
llvm::Value *SrcObj = GetAddrOfLocalVar(SrcArg);
|
||||
llvm::Value *LoadOfSrc = Builder.CreateLoad(SrcObj);
|
||||
|
||||
for (CXXRecordDecl::base_class_const_iterator Base = ClassDecl->bases_begin();
|
||||
Base != ClassDecl->bases_end(); ++Base) {
|
||||
// FIXME. copy constrution of virtual base NYI
|
||||
if (Base->isVirtual())
|
||||
continue;
|
||||
|
||||
CXXRecordDecl *BaseClassDecl
|
||||
= cast<CXXRecordDecl>(Base->getType()->getAs<RecordType>()->getDecl());
|
||||
EmitClassMemberwiseCopy(LoadOfThis, LoadOfSrc, ClassDecl, BaseClassDecl,
|
||||
Base->getType());
|
||||
}
|
||||
|
||||
for (CXXRecordDecl::field_iterator I = ClassDecl->field_begin(),
|
||||
E = ClassDecl->field_end(); I != E; ++I) {
|
||||
const FieldDecl *Field = *I;
|
||||
|
||||
QualType FieldType = getContext().getCanonicalType(Field->getType());
|
||||
const ConstantArrayType *Array =
|
||||
getContext().getAsConstantArrayType(FieldType);
|
||||
if (Array)
|
||||
FieldType = getContext().getBaseElementType(FieldType);
|
||||
|
||||
if (const RecordType *FieldClassType = FieldType->getAs<RecordType>()) {
|
||||
CXXRecordDecl *FieldClassDecl
|
||||
= cast<CXXRecordDecl>(FieldClassType->getDecl());
|
||||
LValue LHS = EmitLValueForField(LoadOfThis, Field, false, 0);
|
||||
LValue RHS = EmitLValueForField(LoadOfSrc, Field, false, 0);
|
||||
if (Array) {
|
||||
const llvm::Type *BasePtr = ConvertType(FieldType);
|
||||
BasePtr = llvm::PointerType::getUnqual(BasePtr);
|
||||
llvm::Value *DestBaseAddrPtr =
|
||||
Builder.CreateBitCast(LHS.getAddress(), BasePtr);
|
||||
llvm::Value *SrcBaseAddrPtr =
|
||||
Builder.CreateBitCast(RHS.getAddress(), BasePtr);
|
||||
EmitClassAggrMemberwiseCopy(DestBaseAddrPtr, SrcBaseAddrPtr, Array,
|
||||
FieldClassDecl, FieldType);
|
||||
}
|
||||
else
|
||||
EmitClassMemberwiseCopy(LHS.getAddress(), RHS.getAddress(),
|
||||
0 /*ClassDecl*/, FieldClassDecl, FieldType);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (Field->getType()->isReferenceType()) {
|
||||
unsigned FieldIndex = CGM.getTypes().getLLVMFieldNo(Field);
|
||||
|
||||
llvm::Value *LHS = Builder.CreateStructGEP(LoadOfThis, FieldIndex,
|
||||
"lhs.ref");
|
||||
|
||||
llvm::Value *RHS = Builder.CreateStructGEP(LoadOfThis, FieldIndex,
|
||||
"rhs.ref");
|
||||
|
||||
// Load the value in RHS.
|
||||
RHS = Builder.CreateLoad(RHS);
|
||||
|
||||
// And store it in the LHS
|
||||
Builder.CreateStore(RHS, LHS);
|
||||
|
||||
continue;
|
||||
}
|
||||
// Do a built-in assignment of scalar data members.
|
||||
LValue LHS = EmitLValueForField(LoadOfThis, Field, false, 0);
|
||||
LValue RHS = EmitLValueForField(LoadOfSrc, Field, false, 0);
|
||||
|
||||
if (!hasAggregateLLVMType(Field->getType())) {
|
||||
RValue RVRHS = EmitLoadOfLValue(RHS, Field->getType());
|
||||
EmitStoreThroughLValue(RVRHS, LHS, Field->getType());
|
||||
} else if (Field->getType()->isAnyComplexType()) {
|
||||
ComplexPairTy Pair = LoadComplexFromAddr(RHS.getAddress(),
|
||||
RHS.isVolatileQualified());
|
||||
StoreComplexToAddr(Pair, LHS.getAddress(), LHS.isVolatileQualified());
|
||||
} else {
|
||||
EmitAggregateCopy(LHS.getAddress(), RHS.getAddress(), Field->getType());
|
||||
}
|
||||
}
|
||||
|
||||
InitializeVtablePtrs(ClassDecl);
|
||||
FinishFunction();
|
||||
}
|
||||
|
||||
/// SynthesizeCXXCopyAssignment - Implicitly define copy assignment operator.
|
||||
/// Before the implicitly-declared copy assignment operator for a class is
|
||||
/// implicitly defined, all implicitly- declared copy assignment operators for
|
||||
/// its direct base classes and its nonstatic data members shall have been
|
||||
/// implicitly defined. [12.8-p12]
|
||||
/// The implicitly-defined copy assignment operator for class X performs
|
||||
/// memberwise assignment of its subob- jects. The direct base classes of X are
|
||||
/// assigned first, in the order of their declaration in
|
||||
/// the base-specifier-list, and then the immediate nonstatic data members of X
|
||||
/// are assigned, in the order in which they were declared in the class
|
||||
/// definition.Each subobject is assigned in the manner appropriate to its type:
|
||||
/// if the subobject is of class type, the copy assignment operator for the
|
||||
/// class is used (as if by explicit qualification; that is, ignoring any
|
||||
/// possible virtual overriding functions in more derived classes);
|
||||
///
|
||||
/// if the subobject is an array, each element is assigned, in the manner
|
||||
/// appropriate to the element type;
|
||||
///
|
||||
/// if the subobject is of scalar type, the built-in assignment operator is
|
||||
/// used.
|
||||
void CodeGenFunction::SynthesizeCXXCopyAssignment(const CXXMethodDecl *CD,
|
||||
llvm::Function *Fn,
|
||||
const FunctionArgList &Args) {
|
||||
|
||||
const CXXRecordDecl *ClassDecl = cast<CXXRecordDecl>(CD->getDeclContext());
|
||||
assert(!ClassDecl->hasUserDeclaredCopyAssignment() &&
|
||||
"SynthesizeCXXCopyAssignment - copy assignment has user declaration");
|
||||
StartFunction(CD, CD->getResultType(), Fn, Args, SourceLocation());
|
||||
|
||||
FunctionArgList::const_iterator i = Args.begin();
|
||||
const VarDecl *ThisArg = i->first;
|
||||
llvm::Value *ThisObj = GetAddrOfLocalVar(ThisArg);
|
||||
llvm::Value *LoadOfThis = Builder.CreateLoad(ThisObj, "this");
|
||||
const VarDecl *SrcArg = (i+1)->first;
|
||||
llvm::Value *SrcObj = GetAddrOfLocalVar(SrcArg);
|
||||
llvm::Value *LoadOfSrc = Builder.CreateLoad(SrcObj);
|
||||
|
||||
for (CXXRecordDecl::base_class_const_iterator Base = ClassDecl->bases_begin();
|
||||
Base != ClassDecl->bases_end(); ++Base) {
|
||||
// FIXME. copy assignment of virtual base NYI
|
||||
if (Base->isVirtual())
|
||||
continue;
|
||||
|
||||
CXXRecordDecl *BaseClassDecl
|
||||
= cast<CXXRecordDecl>(Base->getType()->getAs<RecordType>()->getDecl());
|
||||
EmitClassCopyAssignment(LoadOfThis, LoadOfSrc, ClassDecl, BaseClassDecl,
|
||||
Base->getType());
|
||||
}
|
||||
|
||||
for (CXXRecordDecl::field_iterator Field = ClassDecl->field_begin(),
|
||||
FieldEnd = ClassDecl->field_end();
|
||||
Field != FieldEnd; ++Field) {
|
||||
QualType FieldType = getContext().getCanonicalType((*Field)->getType());
|
||||
const ConstantArrayType *Array =
|
||||
getContext().getAsConstantArrayType(FieldType);
|
||||
if (Array)
|
||||
FieldType = getContext().getBaseElementType(FieldType);
|
||||
|
||||
if (const RecordType *FieldClassType = FieldType->getAs<RecordType>()) {
|
||||
CXXRecordDecl *FieldClassDecl
|
||||
= cast<CXXRecordDecl>(FieldClassType->getDecl());
|
||||
LValue LHS = EmitLValueForField(LoadOfThis, *Field, false, 0);
|
||||
LValue RHS = EmitLValueForField(LoadOfSrc, *Field, false, 0);
|
||||
if (Array) {
|
||||
const llvm::Type *BasePtr = ConvertType(FieldType);
|
||||
BasePtr = llvm::PointerType::getUnqual(BasePtr);
|
||||
llvm::Value *DestBaseAddrPtr =
|
||||
Builder.CreateBitCast(LHS.getAddress(), BasePtr);
|
||||
llvm::Value *SrcBaseAddrPtr =
|
||||
Builder.CreateBitCast(RHS.getAddress(), BasePtr);
|
||||
EmitClassAggrCopyAssignment(DestBaseAddrPtr, SrcBaseAddrPtr, Array,
|
||||
FieldClassDecl, FieldType);
|
||||
}
|
||||
else
|
||||
EmitClassCopyAssignment(LHS.getAddress(), RHS.getAddress(),
|
||||
0 /*ClassDecl*/, FieldClassDecl, FieldType);
|
||||
continue;
|
||||
}
|
||||
// Do a built-in assignment of scalar data members.
|
||||
LValue LHS = EmitLValueForField(LoadOfThis, *Field, false, 0);
|
||||
LValue RHS = EmitLValueForField(LoadOfSrc, *Field, false, 0);
|
||||
if (!hasAggregateLLVMType(Field->getType())) {
|
||||
RValue RVRHS = EmitLoadOfLValue(RHS, Field->getType());
|
||||
EmitStoreThroughLValue(RVRHS, LHS, Field->getType());
|
||||
} else if (Field->getType()->isAnyComplexType()) {
|
||||
ComplexPairTy Pair = LoadComplexFromAddr(RHS.getAddress(),
|
||||
RHS.isVolatileQualified());
|
||||
StoreComplexToAddr(Pair, LHS.getAddress(), LHS.isVolatileQualified());
|
||||
} else {
|
||||
EmitAggregateCopy(LHS.getAddress(), RHS.getAddress(), Field->getType());
|
||||
}
|
||||
}
|
||||
|
||||
// return *this;
|
||||
Builder.CreateStore(LoadOfThis, ReturnValue);
|
||||
|
||||
FinishFunction();
|
||||
}
|
||||
|
||||
static void EmitBaseInitializer(CodeGenFunction &CGF,
|
||||
const CXXRecordDecl *ClassDecl,
|
||||
CXXBaseOrMemberInitializer *BaseInit,
|
||||
CXXCtorType CtorType) {
|
||||
assert(BaseInit->isBaseInitializer() &&
|
||||
"Must have base initializer!");
|
||||
|
||||
llvm::Value *ThisPtr = CGF.LoadCXXThis();
|
||||
|
||||
const Type *BaseType = BaseInit->getBaseClass();
|
||||
CXXRecordDecl *BaseClassDecl =
|
||||
cast<CXXRecordDecl>(BaseType->getAs<RecordType>()->getDecl());
|
||||
|
||||
// FIXME: This method of determining whether a base is virtual is ridiculous;
|
||||
// it should be part of BaseInit.
|
||||
bool isBaseVirtual = false;
|
||||
for (CXXRecordDecl::base_class_const_iterator I = ClassDecl->vbases_begin(),
|
||||
E = ClassDecl->vbases_end(); I != E; ++I)
|
||||
if (I->getType()->getAs<RecordType>()->getDecl() == BaseClassDecl) {
|
||||
isBaseVirtual = true;
|
||||
break;
|
||||
}
|
||||
|
||||
// The base constructor doesn't construct virtual bases.
|
||||
if (CtorType == Ctor_Base && isBaseVirtual)
|
||||
return;
|
||||
|
||||
// Compute the offset to the base; we do this directly instead of using
|
||||
// GetAddressOfBaseClass because the class doesn't have a vtable pointer
|
||||
// at this point.
|
||||
// FIXME: This could be refactored back into GetAddressOfBaseClass if it took
|
||||
// an extra parameter for whether the derived class is the complete object
|
||||
// class.
|
||||
const ASTRecordLayout &Layout =
|
||||
CGF.getContext().getASTRecordLayout(ClassDecl);
|
||||
uint64_t Offset;
|
||||
if (isBaseVirtual)
|
||||
Offset = Layout.getVBaseClassOffset(BaseClassDecl);
|
||||
else
|
||||
Offset = Layout.getBaseClassOffset(BaseClassDecl);
|
||||
const llvm::Type *Int8PtrTy = llvm::Type::getInt8PtrTy(CGF.getLLVMContext());
|
||||
const llvm::Type *BaseClassType = CGF.ConvertType(QualType(BaseType, 0));
|
||||
llvm::Value *V = CGF.Builder.CreateBitCast(ThisPtr, Int8PtrTy);
|
||||
V = CGF.Builder.CreateConstInBoundsGEP1_64(V, Offset/8);
|
||||
V = CGF.Builder.CreateBitCast(V, BaseClassType->getPointerTo());
|
||||
|
||||
// FIXME: This should always use Ctor_Base as the ctor type! (But that
|
||||
// causes crashes in tests.)
|
||||
CGF.EmitCXXConstructorCall(BaseInit->getConstructor(),
|
||||
CtorType, V,
|
||||
BaseInit->const_arg_begin(),
|
||||
BaseInit->const_arg_end());
|
||||
}
|
||||
|
||||
static void EmitMemberInitializer(CodeGenFunction &CGF,
|
||||
const CXXRecordDecl *ClassDecl,
|
||||
CXXBaseOrMemberInitializer *MemberInit) {
|
||||
assert(MemberInit->isMemberInitializer() &&
|
||||
"Must have member initializer!");
|
||||
|
||||
// non-static data member initializers.
|
||||
FieldDecl *Field = MemberInit->getMember();
|
||||
QualType FieldType = CGF.getContext().getCanonicalType(Field->getType());
|
||||
|
||||
llvm::Value *ThisPtr = CGF.LoadCXXThis();
|
||||
LValue LHS;
|
||||
if (FieldType->isReferenceType()) {
|
||||
// FIXME: This is really ugly; should be refactored somehow
|
||||
unsigned idx = CGF.CGM.getTypes().getLLVMFieldNo(Field);
|
||||
llvm::Value *V = CGF.Builder.CreateStructGEP(ThisPtr, idx, "tmp");
|
||||
assert(!FieldType.getObjCGCAttr() && "fields cannot have GC attrs");
|
||||
LHS = LValue::MakeAddr(V, CGF.MakeQualifiers(FieldType));
|
||||
} else {
|
||||
LHS = CGF.EmitLValueForField(ThisPtr, Field, ClassDecl->isUnion(), 0);
|
||||
}
|
||||
|
||||
// If we are initializing an anonymous union field, drill down to the field.
|
||||
if (MemberInit->getAnonUnionMember()) {
|
||||
Field = MemberInit->getAnonUnionMember();
|
||||
LHS = CGF.EmitLValueForField(LHS.getAddress(), Field,
|
||||
/*IsUnion=*/true, 0);
|
||||
FieldType = Field->getType();
|
||||
}
|
||||
|
||||
// If the field is an array, branch based on the element type.
|
||||
const ConstantArrayType *Array =
|
||||
CGF.getContext().getAsConstantArrayType(FieldType);
|
||||
if (Array)
|
||||
FieldType = CGF.getContext().getBaseElementType(FieldType);
|
||||
|
||||
// We lose the constructor for anonymous union members, so handle them
|
||||
// explicitly.
|
||||
// FIXME: This is somwhat ugly.
|
||||
if (MemberInit->getAnonUnionMember() && FieldType->getAs<RecordType>()) {
|
||||
if (MemberInit->getNumArgs())
|
||||
CGF.EmitAggExpr(*MemberInit->arg_begin(), LHS.getAddress(),
|
||||
LHS.isVolatileQualified());
|
||||
else
|
||||
CGF.EmitAggregateClear(LHS.getAddress(), Field->getType());
|
||||
return;
|
||||
}
|
||||
|
||||
if (FieldType->getAs<RecordType>()) {
|
||||
assert(MemberInit->getConstructor() &&
|
||||
"EmitCtorPrologue - no constructor to initialize member");
|
||||
if (Array) {
|
||||
const llvm::Type *BasePtr = CGF.ConvertType(FieldType);
|
||||
BasePtr = llvm::PointerType::getUnqual(BasePtr);
|
||||
llvm::Value *BaseAddrPtr =
|
||||
CGF.Builder.CreateBitCast(LHS.getAddress(), BasePtr);
|
||||
CGF.EmitCXXAggrConstructorCall(MemberInit->getConstructor(),
|
||||
Array, BaseAddrPtr,
|
||||
MemberInit->const_arg_begin(),
|
||||
MemberInit->const_arg_end());
|
||||
}
|
||||
else
|
||||
CGF.EmitCXXConstructorCall(MemberInit->getConstructor(),
|
||||
Ctor_Complete, LHS.getAddress(),
|
||||
MemberInit->const_arg_begin(),
|
||||
MemberInit->const_arg_end());
|
||||
return;
|
||||
}
|
||||
|
||||
assert(MemberInit->getNumArgs() == 1 && "Initializer count must be 1 only");
|
||||
Expr *RhsExpr = *MemberInit->arg_begin();
|
||||
RValue RHS;
|
||||
if (FieldType->isReferenceType()) {
|
||||
RHS = CGF.EmitReferenceBindingToExpr(RhsExpr, FieldType,
|
||||
/*IsInitializer=*/true);
|
||||
CGF.EmitStoreThroughLValue(RHS, LHS, FieldType);
|
||||
} else if (Array) {
|
||||
CGF.EmitMemSetToZero(LHS.getAddress(), Field->getType());
|
||||
} else if (!CGF.hasAggregateLLVMType(RhsExpr->getType())) {
|
||||
RHS = RValue::get(CGF.EmitScalarExpr(RhsExpr, true));
|
||||
CGF.EmitStoreThroughLValue(RHS, LHS, FieldType);
|
||||
} else if (RhsExpr->getType()->isAnyComplexType()) {
|
||||
CGF.EmitComplexExprIntoAddr(RhsExpr, LHS.getAddress(),
|
||||
LHS.isVolatileQualified());
|
||||
} else {
|
||||
// Handle member function pointers; other aggregates shouldn't get this far.
|
||||
CGF.EmitAggExpr(RhsExpr, LHS.getAddress(), LHS.isVolatileQualified());
|
||||
}
|
||||
}
|
||||
|
||||
/// EmitCtorPrologue - This routine generates necessary code to initialize
|
||||
/// base classes and non-static data members belonging to this constructor.
|
||||
/// FIXME: This needs to take a CXXCtorType.
|
||||
void CodeGenFunction::EmitCtorPrologue(const CXXConstructorDecl *CD,
|
||||
CXXCtorType CtorType) {
|
||||
const CXXRecordDecl *ClassDecl = CD->getParent();
|
||||
|
||||
// FIXME: Add vbase initialization
|
||||
|
||||
for (CXXConstructorDecl::init_const_iterator B = CD->init_begin(),
|
||||
E = CD->init_end();
|
||||
B != E; ++B) {
|
||||
CXXBaseOrMemberInitializer *Member = (*B);
|
||||
|
||||
assert(LiveTemporaries.empty() &&
|
||||
"Should not have any live temporaries at initializer start!");
|
||||
|
||||
if (Member->isBaseInitializer())
|
||||
EmitBaseInitializer(*this, ClassDecl, Member, CtorType);
|
||||
else
|
||||
EmitMemberInitializer(*this, ClassDecl, Member);
|
||||
|
||||
// Pop any live temporaries that the initializers might have pushed.
|
||||
while (!LiveTemporaries.empty())
|
||||
PopCXXTemporary();
|
||||
}
|
||||
|
||||
InitializeVtablePtrs(ClassDecl);
|
||||
}
|
||||
|
||||
/// EmitDtorEpilogue - Emit all code that comes at the end of class's
|
||||
/// destructor. This is to call destructors on members and base classes
|
||||
/// in reverse order of their construction.
|
||||
/// FIXME: This needs to take a CXXDtorType.
|
||||
void CodeGenFunction::EmitDtorEpilogue(const CXXDestructorDecl *DD,
|
||||
CXXDtorType DtorType) {
|
||||
assert(!DD->isTrivial() &&
|
||||
"Should not emit dtor epilogue for trivial dtor!");
|
||||
|
||||
const CXXRecordDecl *ClassDecl = DD->getParent();
|
||||
|
||||
// Collect the fields.
|
||||
llvm::SmallVector<const FieldDecl *, 16> FieldDecls;
|
||||
for (CXXRecordDecl::field_iterator I = ClassDecl->field_begin(),
|
||||
E = ClassDecl->field_end(); I != E; ++I) {
|
||||
const FieldDecl *Field = *I;
|
||||
|
||||
QualType FieldType = getContext().getCanonicalType(Field->getType());
|
||||
FieldType = getContext().getBaseElementType(FieldType);
|
||||
|
||||
const RecordType *RT = FieldType->getAs<RecordType>();
|
||||
if (!RT)
|
||||
continue;
|
||||
|
||||
CXXRecordDecl *FieldClassDecl = cast<CXXRecordDecl>(RT->getDecl());
|
||||
if (FieldClassDecl->hasTrivialDestructor())
|
||||
continue;
|
||||
|
||||
FieldDecls.push_back(Field);
|
||||
}
|
||||
|
||||
// Now destroy the fields.
|
||||
for (size_t i = FieldDecls.size(); i > 0; --i) {
|
||||
const FieldDecl *Field = FieldDecls[i - 1];
|
||||
|
||||
QualType FieldType = Field->getType();
|
||||
const ConstantArrayType *Array =
|
||||
getContext().getAsConstantArrayType(FieldType);
|
||||
if (Array)
|
||||
FieldType = getContext().getBaseElementType(FieldType);
|
||||
|
||||
const RecordType *RT = FieldType->getAs<RecordType>();
|
||||
CXXRecordDecl *FieldClassDecl = cast<CXXRecordDecl>(RT->getDecl());
|
||||
|
||||
llvm::Value *ThisPtr = LoadCXXThis();
|
||||
|
||||
LValue LHS = EmitLValueForField(ThisPtr, Field,
|
||||
/*isUnion=*/false,
|
||||
// FIXME: Qualifiers?
|
||||
/*CVRQualifiers=*/0);
|
||||
if (Array) {
|
||||
const llvm::Type *BasePtr = ConvertType(FieldType);
|
||||
BasePtr = llvm::PointerType::getUnqual(BasePtr);
|
||||
llvm::Value *BaseAddrPtr =
|
||||
Builder.CreateBitCast(LHS.getAddress(), BasePtr);
|
||||
EmitCXXAggrDestructorCall(FieldClassDecl->getDestructor(getContext()),
|
||||
Array, BaseAddrPtr);
|
||||
} else
|
||||
EmitCXXDestructorCall(FieldClassDecl->getDestructor(getContext()),
|
||||
Dtor_Complete, LHS.getAddress());
|
||||
}
|
||||
|
||||
// Destroy non-virtual bases.
|
||||
for (CXXRecordDecl::reverse_base_class_const_iterator I =
|
||||
ClassDecl->bases_rbegin(), E = ClassDecl->bases_rend(); I != E; ++I) {
|
||||
const CXXBaseSpecifier &Base = *I;
|
||||
|
||||
// Ignore virtual bases.
|
||||
if (Base.isVirtual())
|
||||
continue;
|
||||
|
||||
CXXRecordDecl *BaseClassDecl
|
||||
= cast<CXXRecordDecl>(Base.getType()->getAs<RecordType>()->getDecl());
|
||||
|
||||
// Ignore trivial destructors.
|
||||
if (BaseClassDecl->hasTrivialDestructor())
|
||||
continue;
|
||||
const CXXDestructorDecl *D = BaseClassDecl->getDestructor(getContext());
|
||||
|
||||
llvm::Value *V = GetAddressOfBaseClass(LoadCXXThis(),
|
||||
ClassDecl, BaseClassDecl,
|
||||
/*NullCheckValue=*/false);
|
||||
EmitCXXDestructorCall(D, Dtor_Base, V);
|
||||
}
|
||||
|
||||
// If we're emitting a base destructor, we don't want to emit calls to the
|
||||
// virtual bases.
|
||||
if (DtorType == Dtor_Base)
|
||||
return;
|
||||
|
||||
// Handle virtual bases.
|
||||
for (CXXRecordDecl::reverse_base_class_const_iterator I =
|
||||
ClassDecl->vbases_rbegin(), E = ClassDecl->vbases_rend(); I != E; ++I) {
|
||||
const CXXBaseSpecifier &Base = *I;
|
||||
CXXRecordDecl *BaseClassDecl
|
||||
= cast<CXXRecordDecl>(Base.getType()->getAs<RecordType>()->getDecl());
|
||||
|
||||
// Ignore trivial destructors.
|
||||
if (BaseClassDecl->hasTrivialDestructor())
|
||||
continue;
|
||||
const CXXDestructorDecl *D = BaseClassDecl->getDestructor(getContext());
|
||||
llvm::Value *V = GetAddressOfBaseClass(LoadCXXThis(),
|
||||
ClassDecl, BaseClassDecl,
|
||||
/*NullCheckValue=*/false);
|
||||
EmitCXXDestructorCall(D, Dtor_Base, V);
|
||||
}
|
||||
|
||||
// If we have a deleting destructor, emit a call to the delete operator.
|
||||
if (DtorType == Dtor_Deleting) {
|
||||
assert(DD->getOperatorDelete() &&
|
||||
"operator delete missing - EmitDtorEpilogue");
|
||||
EmitDeleteCall(DD->getOperatorDelete(), LoadCXXThis(),
|
||||
getContext().getTagDeclType(ClassDecl));
|
||||
}
|
||||
}
|
||||
|
||||
void CodeGenFunction::SynthesizeDefaultDestructor(const CXXDestructorDecl *Dtor,
|
||||
CXXDtorType DtorType,
|
||||
llvm::Function *Fn,
|
||||
const FunctionArgList &Args) {
|
||||
assert(!Dtor->getParent()->hasUserDeclaredDestructor() &&
|
||||
"SynthesizeDefaultDestructor - destructor has user declaration");
|
||||
|
||||
StartFunction(GlobalDecl(Dtor, DtorType), Dtor->getResultType(), Fn, Args,
|
||||
SourceLocation());
|
||||
|
||||
EmitDtorEpilogue(Dtor, DtorType);
|
||||
FinishFunction();
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue