[all-commits] [llvm/llvm-project] e7ec12: [AMDGPU] Implement idempotent atomic lowering

[Stanislav Mekhanoshin via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e7ec123c6af9ed4856e301512444487528a59dee
      https://github.com/llvm/llvm-project/commit/e7ec123c6af9ed4856e301512444487528a59dee
  Author: Stanislav Mekhanoshin <Stanislav.Mekhanoshin at amd.com>
  Date:   2023-03-08 (Wed, 08 Mar 2023)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIISelLowering.cpp
    M llvm/lib/Target/AMDGPU/SIISelLowering.h
    A llvm/test/CodeGen/AMDGPU/idemponent-atomics.ll

  Log Message:
  -----------
  [AMDGPU] Implement idempotent atomic lowering

This turns an idempotent atomic operation into an atomic load.

Fixes: SWDEV-385135

Differential Revision: https://reviews.llvm.org/D144759