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Author SHA1 Message Date
Eric Christopher cee313d288 Revert "Temporarily Revert "Add basic loop fusion pass."" 
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
 2019-04-17 04:52:47 +00:00
Eric Christopher a863435128 Temporarily Revert "Add basic loop fusion pass." 
As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546
 2019-04-17 02:12:23 +00:00
Simon Pilgrim 2a9cde026c [X86][AVX] Reduce v4f64/v4i64 shuffle costs (PR37882) 
These were being over cautious for costs for one/two op general shuffles - VSHUFPD doesn't have to replicate the same shuffle in both lanes like VSHUFPS does. 

llvm-svn: 335216
 2018-06-21 11:37:13 +00:00
Simon Pilgrim d08fbf6486 [SLPVectorizer][X86] Add horizontal add/sub tests 
Shows PR37882 perf regression

llvm-svn: 335215
 2018-06-21 11:16:10 +00:00