[PATCH] D143789: [X86] Try harder to convert `{v}blendw` -> `{v}blend{d|ps}`

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

lowerVECTOR_SHUFFLE should always widen a shuffle as much as possible - my guess is canCombineAsMaskOperation is blocking it on AVX512BW targets - maybe address it there instead?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D143789/new/

https://reviews.llvm.org/D143789