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Commit bfe2ee45 authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86][SSSE3] Bailout of lowerVectorShuffleAsPermuteAndUnpack for shuffle-with-zero (PR40306) 

If we have PSHUFB and we're shuffling with a zero vector, then we are better off not doing VECTOR_SHUFFLE(UNPCK()) as we lose track of those zero elements.

llvm-svn: 351103
parent 95779597
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