[all-commits] [llvm/llvm-project] 2414ba: AMDGPU/GlobalISel: Remove old hacks for boolean se...

[Matt Arsenault via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 2414bab5d7d6b5b247f3f3b97140a2673fa8414b
      https://github.com/llvm/llvm-project/commit/2414bab5d7d6b5b247f3f3b97140a2673fa8414b
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2020-08-03 (Mon, 03 Aug 2020)

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

  Log Message:
  -----------
  AMDGPU/GlobalISel: Remove old hacks for boolean selection

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.