[all-commits] [llvm/llvm-project] e9ddb5: [LoopIdiom] Freeze BitPos if !isGuaranteedNotToBeU...

[luxufan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e9ddb584e80194ab9f54e873aa733ae97da3bb95
      https://github.com/llvm/llvm-project/commit/e9ddb584e80194ab9f54e873aa733ae97da3bb95
  Author: luxufan <luxufan at iscas.ac.cn>
  Date:   2023-06-07 (Wed, 07 Jun 2023)

  Changed paths:
    M llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
    M llvm/test/Transforms/LoopIdiom/X86/left-shift-until-bittest.ll

  Log Message:
  -----------
  [LoopIdiom] Freeze BitPos if !isGuaranteedNotToBeUndefOrPoison

Fixes: https://github.com/llvm/llvm-project/issues/62873

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D151690