First steps to getting PredicateOperand's to work.  This handles instruction and pat pattern definitions.  Codegen is not right for them yet.
First steps to getting PredicateOperand's to work.  This handles instruction
and pat pattern definitions.  Codegen is not right for them yet.


git-svn-id: a4a6f32337ebd29ad4763b423022f00f68d1c7b7@31444 91177308-0d34-0410-b5e6-96231b3b80d8

lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx