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Author SHA1 Message Date
Matt Arsenault 12994a70cf AMDGPU: Use SGPR_128 instead of SReg_128 for vregs 
SGPR_128 only includes the real allocatable SGPRs, and SReg_128 adds
the additional non-allocatable TTMP registers. There's no point in
allocating SReg_128 vregs. This shrinks the size of the classes
regalloc needs to consider, which is usually good.

llvm-svn: 374284
 2019-10-10 07:11:33 +00:00
Krzysztof Parzyszek 4581f37e7c Improve handling of COPY instructions with identical value numbers 
Testcases provided by Tim Renouf.

Differential Revision: https://reviews.llvm.org/D48102

llvm-svn: 335472
 2018-06-25 13:46:41 +00:00