[PATCH] D94746: [AMDGPU] Move kill lowering to WQM pass and add live mask tracking

[Carl Ritson via Phabricator via llvm-commits]

critson created this revision.
critson added reviewers: foad, arsenm, rampitec.
Herald added subscribers: kerbowa, jfb, hiraditya, t-tye, tpr, dstuttard, yaxunl, nhaehnle, jvesely, kzhuravl.
critson requested review of this revision.
Herald added subscribers: llvm-commits, wdng.
Herald added a project: LLVM.

Move implementation of kill intrinsics to WQM pass. Add live lane
tracking by updating a stored exec mask when lanes are killed.
Use live lane tracking to enable early termination of shader
at any point in control flow.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D94746

Files:
  llvm/lib/Target/AMDGPU/SIInsertSkips.cpp
  llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
  llvm/lib/Target/AMDGPU/SIInstructions.td
  llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
  llvm/lib/Target/AMDGPU/SIOptimizeExecMasking.cpp
  llvm/lib/Target/AMDGPU/SIWholeQuadMode.cpp
  llvm/test/CodeGen/AMDGPU/atomic_optimizations_pixelshader.ll
  llvm/test/CodeGen/AMDGPU/early-term.mir
  llvm/test/CodeGen/AMDGPU/insert-skips-kill-uncond.mir
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.kill.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.wqm.vote.ll
  llvm/test/CodeGen/AMDGPU/skip-if-dead.ll
  llvm/test/CodeGen/AMDGPU/transform-block-with-return-to-epilog.ll
  llvm/test/CodeGen/AMDGPU/vcmpx-exec-war-hazard.mir
  llvm/test/CodeGen/AMDGPU/vcmpx-permlane-hazard.mir
  llvm/test/CodeGen/AMDGPU/wave32.ll
  llvm/test/CodeGen/AMDGPU/wqm.ll

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