Merging r214865:

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r214865 | thomas.stellard | 2014-08-05 10:40:52 -0400 (Tue, 05 Aug 2014) | 5 lines

R600/SI: Avoid generating REGISTER_LOAD instructions.

SI doesn't use REGISTER_LOAD anymore, but it was still hitting this code
path for 8-bit and 16-bit private loads.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_35@214895 91177308-0d34-0410-b5e6-96231b3b80d8