ir-gen for --/++ operators of objc object pointers
in 32bit abi.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76109 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExprScalar.cpp b/lib/CodeGen/CGExprScalar.cpp
index 0316116..8103506 100644
--- a/lib/CodeGen/CGExprScalar.cpp
+++ b/lib/CodeGen/CGExprScalar.cpp
@@ -690,7 +690,25 @@
llvm::Constant *Inc =
VMContext.getConstantInt(llvm::Type::Int32Ty, AmountVal);
if (!isa<llvm::FunctionType>(PT->getElementType())) {
- NextVal = Builder.CreateGEP(InVal, Inc, "ptrincdec");
+ QualType PTEE = ValTy->getPointeeType();
+ if (const ObjCInterfaceType *OIT =
+ dyn_cast<ObjCInterfaceType>(PTEE)) {
+ // Handle interface types, which are not represented with a concrete type.
+ int size = CGF.getContext().getTypeSize(OIT) / 8;
+ if (!isInc)
+ size = -size;
+ Inc = VMContext.getConstantInt(Inc->getType(), size);
+ const llvm::Type *i8Ty =
+ VMContext.getPointerTypeUnqual(llvm::Type::Int8Ty);
+ InVal = Builder.CreateBitCast(InVal, i8Ty);
+ NextVal = Builder.CreateGEP(InVal, Inc, "add.ptr");
+ llvm::Value *lhs = LV.getAddress();
+ lhs = Builder.CreateBitCast(lhs, VMContext.getPointerTypeUnqual(i8Ty));
+ LV = LValue::MakeAddr(lhs, ValTy.getCVRQualifiers(),
+ CGF.getContext().getObjCGCAttrKind(ValTy));
+ }
+ else
+ NextVal = Builder.CreateGEP(InVal, Inc, "ptrincdec");
} else {
const llvm::Type *i8Ty =
VMContext.getPointerTypeUnqual(llvm::Type::Int8Ty);