[PATCH] D85846: AMDGPU/GlobalISel: Handle AGPRs used for SGPR operands.

[Matt Arsenault via Phabricator via llvm-commits]

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We would still need to waterfall if the value were somehow an AGPR,
and also need to explicitly copy to a VGPR.


https://reviews.llvm.org/D85846

Files:
  llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-amdgcn.readlane.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-waterfall-agpr.mir

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