Merging r182113:

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r182113 | tstellar | 2013-05-17 08:23:21 -0700 (Fri, 17 May 2013) | 9 lines

R600: Fix encoding for R600 family GPUs

Reviewed-by: Vincent Lejeune <vljn@ovi.com>

https://bugs.freedesktop.org/show_bug.cgi?id=64193
https://bugs.freedesktop.org/show_bug.cgi?id=64257
https://bugs.freedesktop.org/show_bug.cgi?id=64320

NOTE: This is a candidate for the 3.3 branch.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_33@182174 91177308-0d34-0410-b5e6-96231b3b80d8