[PATCH] D92745: [LoopIdiomRecognize] Teach detectShiftUntilZeroIdiom to recognize loops where the counter is decrementing.

[Craig Topper via Phabricator via llvm-commits]

craig.topper updated this revision to Diff 311507.
craig.topper added a comment.

Rebase after pre-committing tests


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D92745/new/

https://reviews.llvm.org/D92745

Files:
  llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
  llvm/test/Transforms/LoopIdiom/X86/ctlz.ll
  llvm/test/Transforms/LoopIdiom/X86/cttz.ll

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