Adam Nemet 6f4f46cf11 [X86] Generate VPSHUFB for in-place v16i16 shuffles
This used to resort to splitting the 256-bit operation into two 128-bit
shuffles and then recombining the results.

Fixes <rdar://problem/16167303>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204735 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-25 17:47:06 +00:00
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