Chris Lattner 7cd09cf942 rearrange logical ops to group them together more consistently.
Define the PatFrag class which can be used to define subpatterns to match
things with.  Define 'not', and use it to define the patterns for andc,
nand, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23233 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-03 00:21:51 +00:00
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