[all-commits] [llvm/llvm-project] a018c8: GFX12: Add LoopDataPrefetchPass (#75625)

[Mariusz Sikora via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a018c8cdbb3a06a523d10268905e82fc39bfe93e
      https://github.com/llvm/llvm-project/commit/a018c8cdbb3a06a523d10268905e82fc39bfe93e
  Author: Mariusz Sikora <mariusz.sikora at amd.com>
  Date:   2023-12-19 (Tue, 19 Dec 2023)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.h
    M llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
    M llvm/test/CodeGen/AMDGPU/llc-pipeline.ll
    A llvm/test/CodeGen/AMDGPU/loop-prefetch-data.ll

  Log Message:
  -----------
  GFX12: Add LoopDataPrefetchPass (#75625)

It is currently disabled by default. It will need experiments on a real
HW to tune and decide on the profitability.

---------

Co-authored-by: Stanislav Mekhanoshin <Stanislav.Mekhanoshin at amd.com>