[PATCH] D92745: [LoopIdiomRecognize] Teach detectShiftUntilZeroIdiom to recognize loops where the counter is decrementing.
Craig Topper via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Dec 7 00:51:00 PST 2020
craig.topper added inline comments.
================
Comment at: llvm/test/Transforms/LoopIdiom/X86/ctlz.ll:531
+; Recognize CTLZ builtin pattern.
+; Here it will replace the loop -
+; assume builtin is always profitable.
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lebedev.ri wrote:
> Precommit this + use update script?
Should use the script on the whole file?
Repository:
rG LLVM Github Monorepo
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https://reviews.llvm.org/D92745/new/
https://reviews.llvm.org/D92745
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