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Author SHA1 Message Date
Simon Pilgrim 0be5567a89 [X86][SSE] Enable SMIN/SMAX/UMIN/UMAX custom lowering for all legal types 
This allows us to recognise more saturation patterns and also simplify some MINMAX codegen that was failing to combine CMPGE comparisons to a legal CMPGT.

Differential Revision: https://reviews.llvm.org/D43014

llvm-svn: 324837
 2018-02-11 10:52:37 +00:00
Simon Pilgrim d229bfd20d [X86][SSE] Add SMIN/SMAX combine test 
As discussed on D43014, we need the ability to flip SMIN/SMAX to (legal) UMIN/UMAX

llvm-svn: 324829
 2018-02-10 23:38:50 +00:00