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Author SHA1 Message Date
Simon Pilgrim 1b4f511aaa [X86][SSE] Add cost model values for CTPOP of vectors 
This patch adds costs for the vectorized implementations of CTPOP, the default values were seriously underestimating the cost of these and was encouraging vectorization on targets where serialized use of POPCNT would be much better.

Differential Revision: https://reviews.llvm.org/D22456

llvm-svn: 276104
 2016-07-20 10:41:28 +00:00
Simon Pilgrim a2220ea456 [SLPVectorizer][X86] Added CTPOP/CTLZ/CTTZ vectorization tests 
llvm-svn: 268800
 2016-05-06 21:33:01 +00:00