Chris Lattner 48b59ec817 reapply r85085 with a bugfix to avoid infinite looping.
All of the 'demorgan' related xforms need to use 
dyn_castNotVal, not m_Not.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85119 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26 15:40:07 +00:00
..
2009-10-20 21:04:26 +00:00