Merging r275978:

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r275978 | pgode | 2016-07-19 07:30:21 -0700 (Tue, 19 Jul 2016) | 7 lines

[AArch64] PredictableSelectIsExpensive for Vulcan.

Adding PredictableSelectIsExpensive for Vulcan

Differential Revision: https://reviews.llvm.org/D22448


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llvm-svn: 276880