Merging r199918:

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r199918 | thomas.stellard | 2014-01-23 10:49:33 -0800 (Thu, 23 Jan 2014) | 8 lines

R600: Disable the BFE pattern

This pattern uses an SDNodeXForm, which isn't being emitted for some
reason.  I can get it to work by attaching the PatLeaf that has the
XForm to the argument in the output pattern, but this results in an
immediate being used in a register operand, which the backend can't
handle yet.

llvm-svn: 204640