[PATCH] D15661: AMDGPU/SI: Fix encoding for FLAT_SCRATCH registers on VI

[Tom Stellard via llvm-commits]

tstellarAMD created this revision.
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These register has different encodings on CI and VI, so we add pseudo
FLAT_SCRACTH registers to be used before MC, and subtarget specific
registers to be used by the MC layer.

http://reviews.llvm.org/D15661

Files:
  lib/Target/AMDGPU/AMDGPUMCInstLower.cpp
  lib/Target/AMDGPU/AsmParser/AMDGPUAsmParser.cpp
  lib/Target/AMDGPU/SIRegisterInfo.td
  lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.cpp
  lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.h
  test/MC/AMDGPU/flat-scratch.s

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