[PATCH] D51401: [X86] Add support for turning vXi1 shuffles into KSHIFTL/KSHIFTR.

[Craig Topper via Phabricator via llvm-commits]

craig.topper updated this revision to Diff 163197.
craig.topper edited the summary of this revision.
craig.topper added a comment.

Add test cases for KNL and SKX. The KNL code is pretty terrible on anything but v16i1, but that's to be expected since we don't have the v32i1 or v64i1 types on KNL or an 8-bit kshift. The intrinsics that will be added for clang will only use 8, 32, and 64 on cpus with avx512dq/avx512bw so this isn't an issue that needs to be addressed immediately.


https://reviews.llvm.org/D51401

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/avx512-skx-insert-subvec.ll
  test/CodeGen/X86/kshift.ll

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