[PATCH] D86583: AMDGPU/GlobalISel: Tolerate negated control flow intrinsic outputs

[Matt Arsenault via Phabricator via llvm-commits]

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If the condition output is negated, swap the branch targets. This is
similar to what SelectionDAG does for when SelectionDAG builder
decides to invert the condition and swap the branches.

      

This is leaving behind a dead constant def for some reason.


https://reviews.llvm.org/D86583

Files:
  llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-amdgcn.if-invalid.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-amdgcn.if.xfail.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-brcond.mir

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