[PATCH] D109273: [X86] Fold (and (or (xor X, -1), Y), Z) -> PTERNLOG Z, Y, X, 0xD0

Craig Topper via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Sun Sep 5 10:14:08 PDT 2021


craig.topper added a comment.

I posted an improvement to tryVPTERNLOG here D109295 <https://reviews.llvm.org/D109295>. This handles the basic case but doesn't peek through bitcasts or push broadcast through a not. Are those cases important for what you're trying to do here? I don't see any tests for them.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D109273/new/

https://reviews.llvm.org/D109273



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