Filter out pattterns from the FastISel emitter which it doesn't actually know how to handle.  No significant functionality change at the moment, but it's necessary for some changes I'm planning.
Filter out pattterns from the FastISel emitter which it doesn't actually know how to handle.  No significant functionality change at the moment, but it's necessary for some changes I'm planning.



git-svn-id: a4a6f32337ebd29ad4763b423022f00f68d1c7b7@130547 91177308-0d34-0410-b5e6-96231b3b80d8

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