[all-commits] [llvm/llvm-project] 6a71e6: AMDGPU: Optimize mfma_scale intrinsics with 0 inputs

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/gfx950/optimize-mfma-scale-0-inputs
  Home:   https://github.com/llvm/llvm-project
  Commit: 6a71e6735c55dcac26df68bc38f93a6d1754c726
      https://github.com/llvm/llvm-project/commit/6a71e6735c55dcac26df68bc38f93a6d1754c726
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2024-11-18 (Mon, 18 Nov 2024)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIInstrInfo.td
    M llvm/lib/Target/AMDGPU/VOP3PInstructions.td
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.mfma.scale.f32.16x16x128.f8f6f4.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.mfma.scale.f32.32x32x64.f8f6f4.ll

  Log Message:
  -----------
  AMDGPU: Optimize mfma_scale intrinsics with 0 inputs

We can use the unscaled form of the instruction if we know the scale
factors are both 0.



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