Merging r203818:

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r203818 | thomas.stellard | 2014-03-13 10:13:04 -0700 (Thu, 13 Mar 2014) | 7 lines

R600: LDS instructions shouldn't implicitly define OQAP

LDS instructions are pseudo instructions which model
the OQAP defs and uses within a single instruction.

This fixes a hang in the opencv MedianFilter tests.

llvm-svn: 204650