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Author SHA1 Message Date
Matt Arsenault
92400a8e42 Enable (sext x) == C --> x == (trunc C) combine 
Extend the existing code which handles this for zext. This makes this
more useful for targets with ZeroOrNegativeOne BooleanContent and
obsoletes a custom combine SI uses for i1 setcc (sext(i1), 0, setne)
since the constant will now be shrunk to i1.

llvm-svn: 224691
 2014-12-21 16:48:42 +00:00