Sanjay Patel e1cf61c69f [TargetLowering] use isSubsetOf in SimplifyDemandedBits; NFCI
This is the DAG equivalent of https://reviews.llvm.org/D32255 , 
which will hopefully be committed again. The functionality
(preferring a 'not' op) is already here in the DAG, so this is
just intended to be a clean-up and performance improvement.

llvm-svn: 302087
2017-05-03 21:55:34 +00:00
..