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Author SHA1 Message Date
Tyler Nowicki
064896bbc5 Add diagnostics to the vectorizer cost model. 
When the cost model determines vectorization is not possible/profitable these remarks print an analysis of that decision.

Note that in selectVectorizationFactor() we can assume that OptForSize and ForceVectorization are mutually exclusive.

Reviewed by Arnold Schwaighofer

llvm-svn: 214599
 2014-08-02 00:14:03 +00:00