[PATCH] D128442: [AMDGPU] GFX11: automatically release VGPRs at the end of the shader

[Jay Foad via Phabricator via llvm-commits]

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GFX11 has a new message type MSG_DEALLOC_VGPRS which can be used to
release a shader's VGPRs. Sending this at the end of a shader (just
before the s_endpgm) can help overall system performance in cases where
the s_endpgm would have to wait for outstanding VMEM stores to complete
before releasing the VGPRs.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D128442

Files:
  llvm/lib/Target/AMDGPU/AMDGPU.h
  llvm/lib/Target/AMDGPU/AMDGPUReleaseVGPRs.cpp
  llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
  llvm/lib/Target/AMDGPU/CMakeLists.txt
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.atomic.dim.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.store.2d.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.intersect_ray.ll
  llvm/test/CodeGen/AMDGPU/atomic_optimizations_local_pointer.ll
  llvm/test/CodeGen/AMDGPU/flat-scratch-svs.ll
  llvm/test/CodeGen/AMDGPU/flat-scratch.ll
  llvm/test/CodeGen/AMDGPU/image-load-d16-tfe.ll
  llvm/test/CodeGen/AMDGPU/llc-pipeline.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.ds.add.gs.reg.rtn.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.ds.sub.gs.reg.rtn.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.fdot2.bf16.bf16.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.fdot2.f16.f16.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.fdot2.f32.bf16.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.a16.dim.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.a16.encode.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.dim.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.store.a16.d16.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.store.a16.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.intersect_ray.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.permlane64.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.sendmsg.rtn.ll
  llvm/test/CodeGen/AMDGPU/llvm.mulo.ll
  llvm/test/CodeGen/AMDGPU/mad_64_32.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-agent.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-nontemporal.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-singlethread.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-system.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-volatile.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-wavefront.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-workgroup.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-global-agent.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-global-nontemporal.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-global-singlethread.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-global-system.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-global-volatile.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-global-wavefront.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-global-workgroup.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-local-nontemporal.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-local-volatile.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-private-nontemporal.ll
  llvm/test/CodeGen/AMDGPU/memory-legalizer-private-volatile.ll