[PATCH] D106222: [X86] Don't use known bits to simplify shuffles.

[Xiang Zhang via Phabricator via llvm-commits]

xiangzhangllvm added a comment.

I wish we can first commit this patch to solve our urgent project fail.

@RKSimon, Or Maybe we can replace the AssertZext with a new node AssertZextOrPoison in "May Be Poison" case ? (If it is much easier to change all the existed optimizations. )


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D106222/new/

https://reviews.llvm.org/D106222