[all-commits] [llvm/llvm-project] c5f40b: [InstCombine] Fold `X!=Y ? ctz(X^Y, true) : BW -> ...

[Yingwei Zheng via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c5f40bf024ee2d62478c8036fb174d75ecabe51f
      https://github.com/llvm/llvm-project/commit/c5f40bf024ee2d62478c8036fb174d75ecabe51f
  Author: Yingwei Zheng <dtcxzyw2333 at gmail.com>
  Date:   2025-02-24 (Mon, 24 Feb 2025)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp
    M llvm/test/Transforms/InstCombine/select-cmp-cttz-ctlz.ll

  Log Message:
  -----------
  [InstCombine] Fold `X!=Y ? ctz(X^Y, true) : BW -> ctz(X^Y, false)` (#128483)

Proof: https://alive2.llvm.org/ce/z/mzL6W2
Closes https://github.com/llvm/llvm-project/issues/128441.



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