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Author SHA1 Message Date
Roman Lebedev b972fc3e8a [InstCombine] Fold x & (-1 >> y) s< x to x s> (-1 >> y) 
https://bugs.llvm.org/show_bug.cgi?id=38123
https://rise4fun.com/Alive/I3O

This pattern is not commutative!
We must make sure not to fold the commuted version!

llvm-svn: 337111
 2018-07-14 20:08:47 +00:00
Roman Lebedev edba515baa [NFC][InstCombine] Tests for x & (-1 >> y) s< x to x s> (-1 >> y) fold. 
https://bugs.llvm.org/show_bug.cgi?id=38123
https://rise4fun.com/Alive/I3O

This pattern is not commutative!
We must make sure not to fold the commuted version!

llvm-svn: 337110
 2018-07-14 20:08:42 +00:00