}
}
- GetElementPtrInst *NewGEP = cast<GetElementPtrInst>(Op1->clone());
+ // If not all GEPs are identical we'll have to create a new PHI node.
+ // Check that the old PHI node has only one use so that it will get
+ // removed.
+ if (DI != -1 && !PN->hasOneUse())
+ return nullptr;
+ GetElementPtrInst *NewGEP = cast<GetElementPtrInst>(Op1->clone());
if (DI == -1) {
// All the GEPs feeding the PHI are identical. Clone one down into our
// BB so that it can be merged with the current GEP.