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Commit 156f83ad authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86] combineVectorTruncation - use PACKUSDW(BLENDW(X,0),BLENDW(Y,0)) for v8i32->v8i16 truncation 

Limit this to SSE41 - AVX1 targets to avoid UNPCKL(PSHUFB,PSHUFB), pre-SSE41 we don't have PACKUSDW/BLENDW and with AVX2 we can perform this as PERMQ(PSHUFB()).
parent 4bcd2588
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