[all-commits] [llvm/llvm-project] d0e020: [InstCombine] Check for poison instead of undef in...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d0e0205bfc5a147f8744a176a10f185af7520c26
      https://github.com/llvm/llvm-project/commit/d0e0205bfc5a147f8744a176a10f185af7520c26
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2024-05-21 (Tue, 21 May 2024)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
    M llvm/test/CodeGen/PowerPC/vec_shuffle.ll
    M llvm/test/Transforms/InstCombine/vec_shuffle-inseltpoison.ll
    M llvm/test/Transforms/InstCombine/vec_shuffle.ll

  Log Message:
  -----------
  [InstCombine] Check for poison instead of undef in single shuffle fold

Otherwise we'll convert undef to poison. Alive2 was already flagging
the existing test8 test as a miscompile.



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