[PATCH] D41323: [X86][SSE] Add cpu feature for aggressive combining to variable shuffles

Simon Pilgrim via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed Dec 20 05:06:26 PST 2017


RKSimon added a comment.

In https://reviews.llvm.org/D41323#960589, @zvi wrote:

> Since all known processors with AVX512 will prefer this new feature turned on, can we make AVX512 imply Fast-var-shuffles?


I've created https://reviews.llvm.org/D41436 - the main issue is whether KNL prefers variable shuffles the same as SkylakeServer


Repository:
  rL LLVM

https://reviews.llvm.org/D41323





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