[all-commits] [llvm/llvm-project] 8a0987: [InstSimplify] Do not remove insertvalue of undef ...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8a09875dd1e55f1920e58b7a01f380ef35465636
      https://github.com/llvm/llvm-project/commit/8a09875dd1e55f1920e58b7a01f380ef35465636
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2022-12-08 (Thu, 08 Dec 2022)

  Changed paths:
    M llvm/lib/Analysis/InstructionSimplify.cpp
    M llvm/test/Transforms/InstSimplify/insertvalue.ll

  Log Message:
  -----------
  [InstSimplify] Do not remove insertvalue of undef into poison

We cannot remove an insertvalue of undef if it inserts into a
potentially poison value. The new implementation matches that of
insertelement.

See https://alive2.llvm.org/ce/z/pCcFsW for the previously
incorrect transform.