[all-commits] [llvm/llvm-project] 5c3496: [InstCombine] Check isGuaranteedNotToBeUndef in ha...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5c3496ff33ce8e4cc6f8c18edd7ae5fc65d23fdf
      https://github.com/llvm/llvm-project/commit/5c3496ff33ce8e4cc6f8c18edd7ae5fc65d23fdf
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2023-12-05 (Tue, 05 Dec 2023)

  Changed paths:
    M llvm/lib/Analysis/ValueTracking.cpp
    M llvm/test/Transforms/InstCombine/add.ll
    M llvm/test/Transforms/InstCombine/and-or-not.ll
    M llvm/test/Transforms/InstCombine/logical-select.ll
    M llvm/test/Transforms/InstCombine/masked-merge-add.ll
    M llvm/test/Transforms/InstCombine/masked-merge-or.ll
    M llvm/test/Transforms/InstCombine/masked-merge-xor.ll
    M llvm/test/Transforms/InstCombine/pr53357.ll
    M llvm/unittests/Analysis/ValueTrackingTest.cpp

  Log Message:
  -----------
  [InstCombine] Check isGuaranteedNotToBeUndef in haveNoCommonBitsSetSpecialCases. (#74390)

It's not safe for InstCombine to add disjoint metadata when converting
Add to Or otherwise.

I've added noundef attribute to preserve existing test behavior.