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Implement throw d, where d is a class type that requires copy 

construction.  WIP.

llvm-svn: 89442
This commit is contained in:
Mike Stump 2009-11-20 02:31:07 +00:00
parent 3153da7154
commit d8d26d06a5
1 changed files with 22 additions and 2 deletions
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24
clang/lib/CodeGen/CGException.cpp
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@ -88,9 +88,29 @@ void CodeGenFunction::EmitCXXThrowExpr(const CXXThrowExpr *E) {
const llvm::Type *Ty = ConvertType(ThrowType)->getPointerTo(0);
const CXXRecordDecl *RD;
RD = cast<CXXRecordDecl>(ThrowType->getAs<RecordType>()->getDecl());
llvm::Value *This = Builder.CreateBitCast(ExceptionPtr, Ty);
if (RD->hasTrivialCopyConstructor()) {
EmitAggExpr(E->getSubExpr(), Builder.CreateBitCast(ExceptionPtr, Ty),
false);
EmitAggExpr(E->getSubExpr(), This, false);
} else if (CXXConstructorDecl *CopyCtor
= RD->getCopyConstructor(getContext(), 0)) {
// FIXME: region management
llvm::Value *Src = EmitLValue(E->getSubExpr()).getAddress();
// Stolen from EmitClassAggrMemberwiseCopy
llvm::Value *Callee = CGM.GetAddrOfCXXConstructor(CopyCtor,
Ctor_Complete);
CallArgList CallArgs;
CallArgs.push_back(std::make_pair(RValue::get(This),
CopyCtor->getThisType(getContext())));
// Push the Src ptr.
CallArgs.push_back(std::make_pair(RValue::get(Src),
CopyCtor->getParamDecl(0)->getType()));
QualType ResultType =
CopyCtor->getType()->getAs<FunctionType>()->getResultType();
EmitCall(CGM.getTypes().getFunctionInfo(ResultType, CallArgs),
Callee, CallArgs, CopyCtor);
// FIXME: region management
} else
ErrorUnsupported(E, "throw expression with copy ctor");
}