llvm-project

b22c8a65 - [ConstraintElimination] Defer removal of simplified ssub.with.overflow (#215135)

[ConstraintElimination] Defer removal of simplified ssub.with.overflow (#215135) replaceSubOverflowUses erased the intrinsic as soon as it became dead. That frees the intrinsic's operand Use array, but the worklist can still hold UseCheck entries pointing into it, storing a now invalid pointer to a Use *. Instead of erasing the intrinsic in place, poison its arguments and push it onto ToRemove. PR: https://github.com/llvm/llvm-project/pull/215135