if (CE->getOpcode() != Instruction::GetElementPtr) break;
GEPOperator *GEP = cast<GEPOperator>(CE);
+ // Make sure we're not a constant offset from an external
+ // global.
+ Value *Operand = GEP->getPointerOperand();
+ if (GlobalVariable *GV = dyn_cast<GlobalVariable>(Operand))
+ if (!GV->hasDefinitiveInitializer()) break;
+
// Get what we're pointing to and its size.
const PointerType *PT =
- cast<PointerType>(GEP->getPointerOperand()->getType());
+ cast<PointerType>(Operand->getType());
size_t Size = TD->getTypeAllocSize(PT->getElementType());
// Get the current byte offset into the thing.
Constant *RetVal = ConstantInt::get(ReturnTy, Size-Offset);
return ReplaceInstUsesWith(CI, RetVal);
- }
+ }
}
case Intrinsic::bswap:
// bswap(bswap(x)) -> x
ret i1 %2
}
+define void @test1(i8* %q, i32 %x) nounwind noinline {
+; CHECK: @test1
+; CHECK: objectsize.i32
+entry:
+ %0 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([0 x i8]* @window, i32 0, i32 10), i1 false) ; <i64> [#uses=1]
+ %1 = icmp eq i32 %0, -1 ; <i1> [#uses=1]
+ br i1 %1, label %"47", label %"46"
+
+"46": ; preds = %entry
+ unreachable
+
+"47": ; preds = %entry
+ unreachable
+}
+
declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly
\ No newline at end of file