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4 Commits

Author SHA1 Message Date
Sanjay Patel 40c53ea933 [InstCombine] allow (icmp sgt smin(PosA, B), 0) fold for vectors 
llvm-svn: 281624
 2016-09-15 16:23:20 +00:00
Sanjay Patel 78a7c7d26a [InstCombine] add vector tests for icmp sgt smin 
llvm-svn: 281623
 2016-09-15 16:13:41 +00:00
Sanjay Patel e957f1fe2c [InstCombine] auto-generate checks 
llvm-svn: 281621
 2016-09-15 15:48:53 +00:00
Philip Reames ec8a8b5437 [InstCombine] (icmp sgt smin(PosA, B) 0) -> (icmp sgt B 0) 
When checking whether an smin is positive, we can move the comparison to one of the inputs if the other is known positive. If the known positive one is the min, then the other can't be negative. If the other is the min, then we compute the min.

Differential Revision: http://reviews.llvm.org/D17873

llvm-svn: 263059
 2016-03-09 21:05:07 +00:00