[PATCH] D142253: [InstCombine] Transform ctpop(Pow2) -> icmp ne Pow2, 0

[Nikita Popov via Phabricator via llvm-commits]

nikic accepted this revision.
nikic added a comment.
This revision is now accepted and ready to land.

LGTM



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Comment at: llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp:673
     return BinaryOperator::CreateLShr(
         Op0, ConstantInt::get(Ty, (~Known.Zero).exactLogBase2()));
 
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If the new pattern reliably subsumes this one, we should drop it in a followup.


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  https://reviews.llvm.org/D142253/new/

https://reviews.llvm.org/D142253