[all-commits] [llvm/llvm-project] d91624: [AMDGPU] Fix MAI hazard scan missing 19-instructio...

[Arseniy Obolenskiy via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d91624c19074e219d5a5c5af45f48afd4cd9052a
      https://github.com/llvm/llvm-project/commit/d91624c19074e219d5a5c5af45f48afd4cd9052a
  Author: Arseniy Obolenskiy <arseniy.obolenskiy at amd.com>
  Date:   2026-09-13 (Sun, 13 Sep 2026)

  Changed paths:
    M llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp
    M llvm/test/CodeGen/AMDGPU/mai-hazards-gfx942.mir

  Log Message:
  -----------
  [AMDGPU] Fix MAI hazard scan missing 19-instruction-old hazards (#222040)

The scan only looked back 19 instructions, but gfx950 can need a gap of
20 after some MFMAs

A hazard exactly 19 instructions back was missed, so no wait was
inserted



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