[all-commits] [llvm/llvm-project] 63f21f: [AMDGPU] Handle LDS DMA and LDS_DIRECT hazards

[Stanislav Mekhanoshin via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 63f21f4cc7bb12614e7049c464f115bdcb8b7fe5
      https://github.com/llvm/llvm-project/commit/63f21f4cc7bb12614e7049c464f115bdcb8b7fe5
  Author: Stanislav Mekhanoshin <Stanislav.Mekhanoshin at amd.com>
  Date:   2022-05-04 (Wed, 04 May 2022)

  Changed paths:
    M llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp
    M llvm/lib/Target/AMDGPU/GCNSubtarget.h
    M llvm/test/CodeGen/AMDGPU/hazard.mir
    A llvm/test/CodeGen/AMDGPU/lds-dma-hazards.mir

  Log Message:
  -----------
  [AMDGPU] Handle LDS DMA and LDS_DIRECT hazards

There shall be 1 wait state between M0 write and LDS DMA/LDS_DIRECT use.

Differential Revision: https://reviews.llvm.org/D124550