IPI->second.push_back(&Use);
// Transfer the dominated uses of IPI to NewPt
// Inserting into the DenseMap may invalidate existing iterator.
- // Keep a copy of the key to find the iterator to erase.
+ // Keep a copy of the key to find the iterator to erase. Keep a copy of the
+ // value so that we don't have to dereference IPI->second.
Instruction *OldInstr = IPI->first;
- InsertPts[NewPt] = std::move(IPI->second);
+ Uses OldUses = std::move(IPI->second);
+ InsertPts[NewPt] = std::move(OldUses);
// Erase IPI.
InsertPts.erase(OldInstr);
}