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Commit 6ac1e98b authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86][SSE] Add SSE41/AVX1 costs for vector shifts. 

We were defaulting to SSE2 costs which weren't taking into account the availability of PBLENDW/PBLENDVB to improve merging of per-element shift results.

llvm-svn: 284939
parent e16b1e22
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