2 Commits

Author	SHA1	Message	Date
Sanjoy Das	08e95b4703	[InstCombine] Add new rule for MIN(MAX(~A, ~B), ~C) et. al. ... Summary: Optimizing these well are especially interesting for IRCE since it "clamps" values by generating this sort of pattern through SCEV expressions. Depends on D9352. Reviewers: majnemer Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D9353 llvm-svn: 236203	2015-04-30 04:56:04 +00:00
Sanjoy Das	82ea3d45b5	New instcombine rule: max(~a,~b) -> ~min(a, b) ... This case is interesting because ScalarEvolutionExpander lowers min(a, b) as ~max(~a,~b). I think the profitability heuristics can be made more clever/aggressive, but this is a start. Differential Revision: http://reviews.llvm.org/D7821 llvm-svn: 230285	2015-02-24 00:08:41 +00:00