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Author SHA1 Message Date
Roman Lebedev e3dc587ae0 [InstCombine] Fold x & (-1 >> y) u< x to x u> (-1 >> y) 
https://bugs.llvm.org/show_bug.cgi?id=38123
https://rise4fun.com/Alive/ocb

This pattern is not commutative. But InstSimplify will
already have taken care of the 'commutative' variant.

llvm-svn: 337098
 2018-07-14 12:20:16 +00:00
Roman Lebedev cad4e3d741 [NFC][InstCombine] Tests for x & (-1 >> y) u< x to x u> (-1 >> y) 
https://bugs.llvm.org/show_bug.cgi?id=38123
https://rise4fun.com/Alive/ocb

This pattern is not commutative. But InstSimplify will
already have taken care of the 'commutative' variant.

llvm-svn: 337097
 2018-07-14 12:20:11 +00:00