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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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313373 91177308-0d34-0410-b5e6-96231b3b80d8
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