[all-commits] [llvm/llvm-project] 4ed66c: AMDGPU: Improve cost handling of fma/fmuladd (#100...

[Matt Arsenault via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4ed66cb4e14303435d0df30f428d0758fe880b57
      https://github.com/llvm/llvm-project/commit/4ed66cb4e14303435d0df30f428d0758fe880b57
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2024-07-30 (Tue, 30 Jul 2024)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
    M llvm/test/Analysis/CostModel/AMDGPU/fma.ll
    M llvm/test/Analysis/CostModel/AMDGPU/fmuladd.ll

  Log Message:
  -----------
  AMDGPU: Improve cost handling of fma/fmuladd (#100798)

We were overcounting the cost of fast f32 FMA. Also address todo
and handle fmuladd (which I'm just assuming lowers to FMA, the slow FMA
expansion is about as fast on slow targets anyway).



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