[all-commits] [llvm/llvm-project] 1baaa0: [AMDGPU] Define special SGPR subregs

[Stanislav Mekhanoshin via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 1baaa080e0481fa2a7cfafc7303c264d0a305c58
      https://github.com/llvm/llvm-project/commit/1baaa080e0481fa2a7cfafc7303c264d0a305c58
  Author: Stanislav Mekhanoshin <Stanislav.Mekhanoshin at amd.com>
  Date:   2020-04-28 (Tue, 28 Apr 2020)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
    M llvm/lib/Target/AMDGPU/AMDGPURegisterBanks.td
    M llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
    M llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
    M llvm/lib/Target/AMDGPU/SIRegisterInfo.td
    M llvm/test/CodeGen/AMDGPU/ipra-regmask.ll
    M llvm/test/CodeGen/AMDGPU/sched-assert-dead-def-subreg-use-other-subreg.mir
    M llvm/test/CodeGen/AMDGPU/sched-handleMoveUp-subreg-def-across-subreg-def.mir
    M llvm/test/CodeGen/AMDGPU/subreg-undef-def-with-other-subreg-defs.mir

  Log Message:
  -----------
  [AMDGPU] Define special SGPR subregs

These are used in SReg_32 and when we start to use SGPR_LO16
there will be compaints that not all registers in RC support
all subreg indexes. For now it is NFC.

Unused regunits are reserved so that verifier does not complain
about missing phys reg live-ins.

Differential Revision: https://reviews.llvm.org/D78591