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Fixes a code gen bug for setter code for a property of

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c++ object reference type with trivial copy constructor.
This causes an assert crash and bad code gen. when assert 
is off. // rdar://6137845

llvm-svn: 147573
This commit is contained in:
Fariborz Jahanian 2012-01-05 00:10:16 +00:00
parent d2a8fe187d
commit 088f1bc295
2 changed files with 33 additions and 1 deletions
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3
clang/lib/CodeGen/CGObjC.cpp
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@ -752,7 +752,8 @@ static void emitStructSetterCall(CodeGenFunction &CGF, ObjCMethodDecl *OMD,
// The second argument is the address of the parameter variable.
ParmVarDecl *argVar = *OMD->param_begin();
DeclRefExpr argRef(argVar, argVar->getType(), VK_LValue, SourceLocation());
DeclRefExpr argRef(argVar, argVar->getType().getNonReferenceType(),
VK_LValue, SourceLocation());
llvm::Value *argAddr = CGF.EmitLValue(&argRef).getAddress();
argAddr = CGF.Builder.CreateBitCast(argAddr, CGF.Int8PtrTy);
args.add(RValue::get(argAddr), CGF.getContext().VoidPtrTy);

31
clang/test/CodeGenObjCXX/property-object-reference-1.mm Normal file
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@ -0,0 +1,31 @@
// RUN: %clang_cc1 -x objective-c++ %s -triple x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
// rdar://6137845
struct TCPPObject
{
TCPPObject(const TCPPObject& inObj);
TCPPObject();
~TCPPObject();
int filler[64];
};
@interface MyDocument
{
@private
TCPPObject _cppObject;
}
@property (atomic, assign, readwrite) const TCPPObject& cppObject;
@end
@implementation MyDocument
@synthesize cppObject = _cppObject;
@end
// CHECK: [[cppObjectaddr:%.*]] = alloca %struct.TCPPObject*, align 8
// CHECK: store %struct.TCPPObject* [[cppObject:%.*]], %struct.TCPPObject** [[cppObjectaddr]], align 8
// CHECK: [[THREE:%.*]] = load %struct.TCPPObject** [[cppObjectaddr]], align 8
// CHECK: [[FOUR:%.*]] = bitcast %struct.TCPPObject* [[THREE]] to i8*
// CHECK: call void @objc_copyStruct(i8* [[TWO:%.*]], i8* [[FOUR]], i64 256, i1 zeroext true, i1 zeroext false)