[all-commits] [llvm/llvm-project] 0eaf67: [AMDGPU][InsertWaits] No wait for WAW for global/s...

[Ruiling, Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0eaf6759aee92fa27efb78a97405195869c67bb0
      https://github.com/llvm/llvm-project/commit/0eaf6759aee92fa27efb78a97405195869c67bb0
  Author: Ruiling Song <ruiling.song at amd.com>
  Date:   2022-11-23 (Wed, 23 Nov 2022)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIInsertWaitcnts.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/implicit-kernarg-backend-usage-global-isel.ll
    M llvm/test/CodeGen/AMDGPU/extract-subvector-16bit.ll
    M llvm/test/CodeGen/AMDGPU/implicit-kernarg-backend-usage.ll
    M llvm/test/CodeGen/AMDGPU/vector_shuffle.packed.ll
    M llvm/test/CodeGen/AMDGPU/waitcnt-vmem-waw.mir

  Log Message:
  -----------
  [AMDGPU][InsertWaits] No wait for WAW for global/scratch_load

global/scratch_load will return in order they are issued. No
need to insert a s_waitcnt for WAW hazard.

Reviewed By: foad

Differential Revision: https://reviews.llvm.org/D138476