[PATCH] D84646: AMDGPU/GlobalISel: Remove old hacks for boolean selection

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: nhaehnle, kerbowa, foad, Petar.Avramovic, mbrkusanin, madhur13490, hsmhsm.
Herald added subscribers: hiraditya, t-tye, tpr, dstuttard, rovka, yaxunl, wdng, jvesely, kzhuravl.
Herald added a project: LLVM.

There were various hacks used to try to avoid making s1 SGPR vs. s1
VCC ambiguous after constraining the register before we had a strategy
to deal with this. This also attempted to handle undef operands, which
are now illegal gMIR.


https://reviews.llvm.org/D84646

Files:
  llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp
  llvm/lib/Target/AMDGPU/AMDGPUSubtarget.h
  llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-brcond.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-phi.mir

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