[PATCH] D89754: [AMDGPU] Avoid inserting noops during scheduling

[Austin Kerbow via Phabricator via llvm-commits]

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

Passes that are run after the post-RA scheduler may insert instructions like
waitcnt which eliminate the need for certain noops. After this patch the
scheduler is still aware of possible latency from hazards but noops will
not be inserted until the dedicated hazard recognizer pass is run.

Depends on D89753 <https://reviews.llvm.org/D89753>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D89754

Files:
  llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp
  llvm/lib/Target/AMDGPU/SIShrinkInstructions.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/extractelement.i128.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.div.fmas.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.update.dpp.ll
  llvm/test/CodeGen/AMDGPU/atomic_optimizations_local_pointer.ll
  llvm/test/CodeGen/AMDGPU/atomic_optimizations_pixelshader.ll
  llvm/test/CodeGen/AMDGPU/global-saddr-atomics.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.update.dpp.ll
  llvm/test/CodeGen/AMDGPU/memory_clause.ll
  llvm/test/CodeGen/AMDGPU/nop-fold.mir
  llvm/test/CodeGen/AMDGPU/power-sched-no-instr-sunit.mir

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