Simon Pilgrim 356e823b51 [X86][SSE] Add cost model for BSWAP of vectors ...

The BSWAP of vector types is quite efficiently implemented using vector shuffles on SSE/AVX targets, we should reflect the typical cost of this to encourage vectorization.

Differential Revision: http://reviews.llvm.org/D21521

llvm-svn: 273217

2016-06-20 23:08:21 +00:00

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