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Author SHA1 Message Date
Tony Jiang 60c247de18 [PowerPC] Fix a performance bug for PPC::XXPERMDI. 
There are some VectorShuffle Nodes in SDAG which can be selected to XXPERMDI
Instruction, this patch recognizes them and does the selection to improve
the PPC performance.

Differential Revision: https://reviews.llvm.org/D33404

llvm-svn: 304298
 2017-05-31 13:09:57 +00:00