[PATCH] D115526: [InstCombine] don't automatically drop poison-generating flags in SimplifyVectorDemandedElts

Nikita Popov via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon Dec 13 03:23:30 PST 2021


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

LGTM. After looking a bit closer, I do think this is safe and independent of the shufflevector patches referenced above. We already convert non-demanded elements to poison, so converting them to poison through nowrap flags should be just fine.


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https://reviews.llvm.org/D115526



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