[all-commits] [llvm/llvm-project] 53eb46: [AMDGPU] Support non-strictly stronger memory orde...

[Tony Tye via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 53eb469195b89a00c5e977fc7f76cd520a447d97
      https://github.com/llvm/llvm-project/commit/53eb469195b89a00c5e977fc7f76cd520a447d97
  Author: Tony Tye <Tony.Tye at amd.com>
  Date:   2021-08-10 (Tue, 10 Aug 2021)

  Changed paths:
    M llvm/include/llvm/CodeGen/MachineMemOperand.h
    M llvm/include/llvm/Support/AtomicOrdering.h
    M llvm/lib/Target/AMDGPU/SIMemoryLegalizer.cpp
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-agent.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-singlethread.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-system.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-wavefront.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-workgroup.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-global-agent.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-global-singlethread.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-global-system.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-global-wavefront.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-global-workgroup.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-local-agent.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-local-singlethread.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-local-system.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-local-wavefront.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-local-workgroup.ll

  Log Message:
  -----------
  [AMDGPU] Support non-strictly stronger memory orderings in SIMemoryLegalizer

C++20 no longer requires the failure memory ordering to be no stronger than the
success memory ordering. Adjust assert in AMD GPU SIMemoryLegalizer, and merge
instruction memory orderings

Add common operation to merge memory orders that allows non strict memory
orderings to be combined. Use it in SIMemoryLegalizer and
MachineMemOperand::getMergedOrdering.

Reviewed By: efriedma, rampitec

Differential Revision: https://reviews.llvm.org/D106729