[all-commits] [llvm/llvm-project] 939a66: [AMDGPU] Implement workaround for GFX11.5 export p...

[Carl Ritson via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 939a6624ac95e68a4dca4ba3ef8a9dfe26182522
      https://github.com/llvm/llvm-project/commit/939a6624ac95e68a4dca4ba3ef8a9dfe26182522
  Author: Carl Ritson <carl.ritson at amd.com>
  Date:   2024-07-23 (Tue, 23 Jul 2024)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPU.td
    M llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp
    M llvm/lib/Target/AMDGPU/GCNHazardRecognizer.h
    M llvm/lib/Target/AMDGPU/GCNSubtarget.h
    A llvm/test/CodeGen/AMDGPU/required-export-priority.ll
    A llvm/test/CodeGen/AMDGPU/required-export-priority.mir

  Log Message:
  -----------
  [AMDGPU] Implement workaround for GFX11.5 export priority (#99273)

On GFX11.5 shaders having completed exports need to execute/wait at a
lower priority than shaders still executing exports.
Add code to maintain normal priority of 2 for shaders that export and
drop to priority 0 after exports.



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