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Summary: We were previously selecting all constant loads to SMRD instructions and legalizing the SMRDs with non-uniform addresses during the SIFixSGPRCopesPass. This new solution is more simple and also generates much better code, because the instruction selector is able to take advantage of all the MUBUF addressing modes that are legalization pass wasn't able to. We also no longer need to generate v_add_* instructions when we have a uniform pointer and a non-uniform offset, as this is now folded into the MUBUF instruction during instruction selection. Reviewers: arsenm Subscribers: arsenm, llvm-commits Differential Revision: http://reviews.llvm.org/D15425 llvm-svn: 255672
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