K 10
svn:author
V 6
emaste
K 8
svn:date
V 27
2017-12-15T18:56:12.887440Z
K 7
svn:log
V 259
lld: Simplify a boolean expression by De Morgan's laws.

Cherry-pick lld r315653 by Rui Ueyama:
    I don't really understand what exactly this expression means,
    but at least I can mechanically transform it.

Obtained from:	LLVM r315653
MFC after:	1 week

END