[PATCH] D87543: AMDGPU: Always split si_end_cf blocks

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
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Ensure we only put the exec modification in a terminator instruction.

      

The trickiest part of this was dealing with SI_KILL_CLEANUP, which I
don't fully understand. It tries to preserve it as a terminator and
avoids removing it.


https://reviews.llvm.org/D87543

Files:
  llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
  llvm/lib/Target/AMDGPU/SIInstructions.td
  llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.div.fmas.ll
  llvm/test/CodeGen/AMDGPU/atomic_optimizations_pixelshader.ll
  llvm/test/CodeGen/AMDGPU/collapse-endcf.mir
  llvm/test/CodeGen/AMDGPU/multilevel-break.ll
  llvm/test/CodeGen/AMDGPU/sdiv64.ll
  llvm/test/CodeGen/AMDGPU/srem64.ll
  llvm/test/CodeGen/AMDGPU/transform-block-with-return-to-epilog.ll
  llvm/test/CodeGen/AMDGPU/udiv64.ll
  llvm/test/CodeGen/AMDGPU/urem64.ll

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