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Commit 7a183e27 authored by Craig Topper's avatar Craig Topper
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[X86] Prefer VPERMQ over VPERM2F128 for any unary shuffle, not just the ones... 

[X86] Prefer VPERMQ over VPERM2F128 for any unary shuffle, not just the ones that can be done with a insertf128

The early out for AVX2 in lowerV2X128VectorShuffle is positioned in a weird spot below some shuffle mask equivalency checks.

But I think we want to allow VPERMQ for any unary shuffle.

Differential Revision: https://reviews.llvm.org/D37893

llvm-svn: 313373
parent e05e2f8b
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