[PATCH] D41436: [X86][AVX512] Enable variable shuffle combining by default on AVX512 targets

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon created this revision.
RKSimon added reviewers: zvi, delena, craig.topper, spatel.

As discussed on https://reviews.llvm.org/D41323.

I've avoided binding the FeatureFastVariableShuffle feature to FeatureAVX512 directly, and just made it part of combineX86ShuffleChain.


Repository:
  rL LLVM

https://reviews.llvm.org/D41436

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/avx512-shuffles/broadcast-vector-int.ll
  test/CodeGen/X86/avx512-shuffles/partial_permute.ll
  test/CodeGen/X86/avx512-trunc.ll
  test/CodeGen/X86/broadcastm-lowering.ll
  test/CodeGen/X86/shuffle-strided-with-offset-128.ll
  test/CodeGen/X86/shuffle-strided-with-offset-256.ll
  test/CodeGen/X86/shuffle-strided-with-offset-512.ll
  test/CodeGen/X86/shuffle-vs-trunc-128.ll
  test/CodeGen/X86/shuffle-vs-trunc-256.ll
  test/CodeGen/X86/shuffle-vs-trunc-512.ll
  test/CodeGen/X86/vector-half-conversions.ll
  test/CodeGen/X86/vector-shuffle-128-v4.ll
  test/CodeGen/X86/vector-shuffle-128-v8.ll
  test/CodeGen/X86/vector-shuffle-256-v16.ll
  test/CodeGen/X86/vector-shuffle-256-v32.ll
  test/CodeGen/X86/vector-shuffle-256-v4.ll
  test/CodeGen/X86/vector-shuffle-256-v8.ll
  test/CodeGen/X86/vector-shuffle-512-v32.ll
  test/CodeGen/X86/vector-zext.ll

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