// initializer to be the stored value, then delete all stores to the
// global. This allows us to mark it constant.
if (Constant *SOVConstant = dyn_cast<Constant>(GS.StoredOnceValue))
- if (isa<UndefValue>(GV->getInitializer())) {
+ if (SOVConstant->getType() == GV->getValueType() &&
+ isa<UndefValue>(GV->getInitializer())) {
// Change the initial value here.
GV->setInitializer(SOVConstant);
--- /dev/null
+; RUN: opt -passes=globalopt < %s -S | FileCheck %s
+
+; Check that we don't try to set a global initializer to a value of a different type.
+; In this case, we were trying to set @0's initializer to be i32* null.
+
+%0 = type { i32* }
+
+@0 = internal global %0* null
+; CHECK: global %0 undef
+
+define void @a() {
+ %1 = tail call i8* @_Znwm(i64 8)
+ %2 = bitcast i8* %1 to %0*
+ %3 = getelementptr inbounds %0, %0* %2, i64 0, i32 0
+ store i32* null, i32** %3, align 8
+ store i8* %1, i8** bitcast (%0** @0 to i8**), align 8
+ %4 = load i64*, i64** bitcast (%0** @0 to i64**), align 8
+ %5 = load atomic i64, i64* %4 acquire, align 8
+ ret void
+}
+
+declare i8* @_Znwm(i64)