[PATCH] D87149: [InstCombine] erase instructions leading up to unreachable

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added inline comments.


================
Comment at: llvm/lib/Transforms/InstCombine/InstructionCombining.cpp:2806
+  Instruction *Prev = I.getPrevNonDebugInstruction();
+  if (Prev && Prev->use_empty() && !Prev->isEHPad() &&
+      isGuaranteedToTransferExecutionToSuccessor(Prev)) {
----------------
Is there any testcase with non-empty use list?
I'd think we could RAUW it with `undef`.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D87149/new/

https://reviews.llvm.org/D87149