[all-commits] [llvm/llvm-project] 0f94d2: [AMDGPU] GFX11: automatically release VGPRs at the...

[Jay Foad via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0f94d2b385e7788bf232f7b868ed2ee86210201e
      https://github.com/llvm/llvm-project/commit/0f94d2b385e7788bf232f7b868ed2ee86210201e
  Author: Jay Foad <jay.foad at amd.com>
  Date:   2022-06-30 (Thu, 30 Jun 2022)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPU.h
    A llvm/lib/Target/AMDGPU/AMDGPUReleaseVGPRs.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
    M llvm/lib/Target/AMDGPU/CMakeLists.txt
    M llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.atomic.dim.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.store.2d.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.intersect_ray.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.wmma_32.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.wmma_64.ll
    M llvm/test/CodeGen/AMDGPU/atomic_optimizations_local_pointer.ll
    M llvm/test/CodeGen/AMDGPU/clamp.ll
    M llvm/test/CodeGen/AMDGPU/cluster_stores.ll
    M llvm/test/CodeGen/AMDGPU/flat-scratch-svs.ll
    M llvm/test/CodeGen/AMDGPU/flat-scratch.ll
    M llvm/test/CodeGen/AMDGPU/image-load-d16-tfe.ll
    M llvm/test/CodeGen/AMDGPU/llc-pipeline.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.ds.add.gs.reg.rtn.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.ds.sub.gs.reg.rtn.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.fdot2.bf16.bf16.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.fdot2.f16.f16.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.fdot2.f32.bf16.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.a16.dim.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.a16.encode.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.dim.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.store.a16.d16.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.store.a16.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.intersect_ray.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.permlane64.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.sendmsg.rtn.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.wmma_32.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.wmma_64.ll
    M llvm/test/CodeGen/AMDGPU/llvm.mulo.ll
    M llvm/test/CodeGen/AMDGPU/mad_64_32.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-agent.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-nontemporal.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-singlethread.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-system.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-volatile.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-wavefront.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-workgroup.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-global-agent.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-global-nontemporal.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-global-singlethread.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-global-system.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-global-volatile.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-global-wavefront.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-global-workgroup.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-local-nontemporal.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-local-volatile.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-private-nontemporal.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-private-volatile.ll
    A llvm/test/CodeGen/AMDGPU/release-vgprs.mir
    M llvm/test/CodeGen/AMDGPU/wmma_multiple_32.ll
    M llvm/test/CodeGen/AMDGPU/wmma_multiple_64.ll

  Log Message:
  -----------
  [AMDGPU] GFX11: automatically release VGPRs at the end of the shader

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.

Differential Revision: https://reviews.llvm.org/D128442