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Author SHA1 Message Date
Stanislav Mekhanoshin 9e77d0c6df [AMDGPU] gfx908 register file changes 
Differential Revision: https://reviews.llvm.org/D64438

llvm-svn: 365546
 2019-07-09 19:41:51 +00:00
Matt Arsenault 5630e3a1c7 RegUsageInfoCollector: Don't iterate all regs for every reg class 
This is extremly slow on AMDGPU, which has a lot of physical register
and a lot of register classes.

determineCalleeSaves, via MachineRegisterInfo::isPhysRegUsed already
added all of the super registers to the saved set.

llvm-svn: 365370
 2019-07-08 18:48:42 +00:00