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ir-gen for nonfragile ivar bitfield access (objc2 nonfragile abi). 

llvm-svn: 63644
This commit is contained in:
Fariborz Jahanian 2009-02-03 19:03:09 +00:00
parent d564353193
commit 712bfa6478
5 changed files with 70 additions and 57 deletions
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24
clang/lib/CodeGen/CGExpr.cpp
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@ -850,8 +850,8 @@ LValue CodeGenFunction::EmitMemberExpr(const MemberExpr *E) {
LValue CodeGenFunction::EmitLValueForBitfield(llvm::Value* BaseValue,
FieldDecl* Field,
unsigned CVRQualifiers,
unsigned idx) {
unsigned CVRQualifiers) {
unsigned idx = CGM.getTypes().getLLVMFieldNo(Field);
// FIXME: CodeGenTypes should expose a method to get the appropriate
// type for FieldTy (the appropriate type is ABI-dependent).
const llvm::Type *FieldTy = CGM.getTypes().ConvertTypeForMem(Field->getType());
@ -877,11 +877,10 @@ LValue CodeGenFunction::EmitLValueForField(llvm::Value* BaseValue,
bool isUnion,
unsigned CVRQualifiers)
{
unsigned idx = CGM.getTypes().getLLVMFieldNo(Field);
if (Field->isBitField())
return EmitLValueForBitfield(BaseValue, Field, CVRQualifiers, idx);
return EmitLValueForBitfield(BaseValue, Field, CVRQualifiers);
unsigned idx = CGM.getTypes().getLLVMFieldNo(Field);
llvm::Value *V = Builder.CreateStructGEP(BaseValue, idx, "tmp");
// Match union field type.
@ -1028,19 +1027,12 @@ LValue CodeGenFunction::EmitLValueForIvar(QualType ObjectTy,
// See comment in EmitIvarOffset.
if (CGM.getObjCRuntime().LateBoundIVars())
assert(0 && "late-bound ivars are unsupported");
// TODO: Add a special case for isa (index 0)
unsigned Index = CGM.getTypes().getLLVMFieldNo(Field);
if (Ivar->isBitField()) {
return EmitLValueForBitfield(BaseValue, const_cast<FieldDecl *>(Field),
CVRQualifiers, Index);
}
llvm::Value *V = CGM.getObjCRuntime().EmitObjCValueForIvar(*this,
ObjectTy,
BaseValue, Ivar, Field, CVRQualifiers);
LValue LV = LValue::MakeAddr(V, Ivar->getType().getCVRQualifiers()|CVRQualifiers);
LValue LV = CGM.getObjCRuntime().EmitObjCValueForIvar(*this,
ObjectTy,
BaseValue, Ivar, Field,
CVRQualifiers);
SetVarDeclObjCAttribute(getContext(), Ivar, Ivar->getType(), LV);
LValue::SetObjCIvar(LV, true);
return LV;
}

32
clang/lib/CodeGen/CGObjCGNU.cpp
View File

@ -140,12 +140,12 @@ public:
llvm::Value *src, llvm::Value *dest);
virtual void EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF,
llvm::Value *src, llvm::Value *dest);
virtual llvm::Value *EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF,
QualType ObjectTy,
llvm::Value *BaseValue,
const ObjCIvarDecl *Ivar,
const FieldDecl *Field,
unsigned CVRQualifiers);
virtual LValue EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF,
QualType ObjectTy,
llvm::Value *BaseValue,
const ObjCIvarDecl *Ivar,
const FieldDecl *Field,
unsigned CVRQualifiers);
};
} // end anonymous namespace
@ -1037,16 +1037,22 @@ void CGObjCGNU::EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF,
return;
}
llvm::Value *CGObjCGNU::EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF,
QualType ObjectTy,
llvm::Value *BaseValue,
const ObjCIvarDecl *Ivar,
const FieldDecl *Field,
unsigned CVRQualifiers) {
LValue CGObjCGNU::EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF,
QualType ObjectTy,
llvm::Value *BaseValue,
const ObjCIvarDecl *Ivar,
const FieldDecl *Field,
unsigned CVRQualifiers) {
if (Ivar->isBitField())
return CGF.EmitLValueForBitfield(BaseValue, const_cast<FieldDecl *>(Field),
CVRQualifiers);
// TODO: Add a special case for isa (index 0)
unsigned Index = CGM.getTypes().getLLVMFieldNo(Field);
llvm::Value *V = CGF.Builder.CreateStructGEP(BaseValue, Index, "tmp");
return V;
LValue LV = LValue::MakeAddr(V,
Ivar->getType().getCVRQualifiers()|CVRQualifiers);
LValue::SetObjCIvar(LV, true);
return LV;
}
CodeGen::CGObjCRuntime *CodeGen::CreateGNUObjCRuntime(CodeGen::CodeGenModule &CGM){

57
clang/lib/CodeGen/CGObjCMac.cpp
View File

@ -550,12 +550,12 @@ private:
virtual void EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF,
llvm::Value *src, llvm::Value *dest);
virtual llvm::Value *EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF,
QualType ObjectTy,
llvm::Value *BaseValue,
const ObjCIvarDecl *Ivar,
const FieldDecl *Field,
unsigned CVRQualifiers);
virtual LValue EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF,
QualType ObjectTy,
llvm::Value *BaseValue,
const ObjCIvarDecl *Ivar,
const FieldDecl *Field,
unsigned CVRQualifiers);
};
class CGObjCNonFragileABIMac : public CGObjCCommonMac {
@ -676,12 +676,12 @@ public:
virtual void EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF,
llvm::Value *src, llvm::Value *dest)
{ return; }
virtual llvm::Value *EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF,
QualType ObjectTy,
llvm::Value *BaseValue,
const ObjCIvarDecl *Ivar,
const FieldDecl *Field,
unsigned CVRQualifiers);
virtual LValue EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF,
QualType ObjectTy,
llvm::Value *BaseValue,
const ObjCIvarDecl *Ivar,
const FieldDecl *Field,
unsigned CVRQualifiers);
};
} // end anonymous namespace
@ -2113,16 +2113,22 @@ void CGObjCMac::EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF,
/// EmitObjCValueForIvar - Code Gen for ivar reference.
///
llvm::Value *CGObjCMac::EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF,
QualType ObjectTy,
llvm::Value *BaseValue,
const ObjCIvarDecl *Ivar,
const FieldDecl *Field,
unsigned CVRQualifiers) {
LValue CGObjCMac::EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF,
QualType ObjectTy,
llvm::Value *BaseValue,
const ObjCIvarDecl *Ivar,
const FieldDecl *Field,
unsigned CVRQualifiers) {
if (Ivar->isBitField())
return CGF.EmitLValueForBitfield(BaseValue, const_cast<FieldDecl *>(Field),
CVRQualifiers);
// TODO: Add a special case for isa (index 0)
unsigned Index = CGM.getTypes().getLLVMFieldNo(Field);
llvm::Value *V = CGF.Builder.CreateStructGEP(BaseValue, Index, "tmp");
return V;
LValue LV = LValue::MakeAddr(V,
Ivar->getType().getCVRQualifiers()|CVRQualifiers);
LValue::SetObjCIvar(LV, true);
return LV;
}
/* *** Private Interface *** */
@ -4100,7 +4106,7 @@ CGObjCNonFragileABIMac::GetMethodDescriptionConstant(const ObjCMethodDecl *MD) {
/// (type *)((char *)base + _OBJC_IVAR_$_.ivar;
/// @encode
///
llvm::Value *CGObjCNonFragileABIMac::EmitObjCValueForIvar(
LValue CGObjCNonFragileABIMac::EmitObjCValueForIvar(
CodeGen::CodeGenFunction &CGF,
QualType ObjectTy,
llvm::Value *BaseValue,
@ -4125,6 +4131,7 @@ llvm::Value *CGObjCNonFragileABIMac::EmitObjCValueForIvar(
0,
ExternalName,
&CGM.getModule());
// (char *) BaseValue
llvm::Value *V = CGF.Builder.CreateBitCast(BaseValue,
ObjCTypes.Int8PtrTy);
@ -4136,7 +4143,15 @@ llvm::Value *CGObjCNonFragileABIMac::EmitObjCValueForIvar(
CGM.getTypes().ConvertType(Ivar->getType());
llvm::Type *ptrIvarTy = llvm::PointerType::getUnqual(IvarTy);
V = CGF.Builder.CreateBitCast(V, ptrIvarTy);
return V;
if (Ivar->isBitField())
return CGF.EmitLValueForBitfield(V, const_cast<FieldDecl *>(Field),
CVRQualifiers);
LValue LV = LValue::MakeAddr(V,
Ivar->getType().getCVRQualifiers()|CVRQualifiers);
LValue::SetObjCIvar(LV, true);
return LV;
}
/* *** */

12
clang/lib/CodeGen/CGObjCRuntime.h
View File

@ -157,12 +157,12 @@ public:
virtual void EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF,
llvm::Value *src, llvm::Value *dest) = 0;
virtual llvm::Value *EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF,
QualType ObjectTy,
llvm::Value *BaseValue,
const ObjCIvarDecl *Ivar,
const FieldDecl *Field,
unsigned CVRQualifiers) = 0;
virtual LValue EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF,
QualType ObjectTy,
llvm::Value *BaseValue,
const ObjCIvarDecl *Ivar,
const FieldDecl *Field,
unsigned CVRQualifiers) = 0;
};
/// Creates an instance of an Objective-C runtime class.

2
clang/lib/CodeGen/CodeGenFunction.h
View File

@ -531,7 +531,7 @@ public:
unsigned CVRQualifiers);
LValue EmitLValueForBitfield(llvm::Value* Base, FieldDecl* Field,
unsigned CVRQualifiers, unsigned idx);
unsigned CVRQualifiers);
LValue EmitCXXConditionDeclLValue(const CXXConditionDeclExpr *E);