[all-commits] [llvm/llvm-project] 6418d4: AtomicExpand: Copy metadata from atomicrmw to cmpxchg

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/atomic-expand-copy-metadata-to-cmpxchg
  Home:   https://github.com/llvm/llvm-project
  Commit: 6418d4464a7d27089c8cc2c5c1bf1a6e89f9c8ce
      https://github.com/llvm/llvm-project/commit/6418d4464a7d27089c8cc2c5c1bf1a6e89f9c8ce
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2024-10-07 (Mon, 07 Oct 2024)

  Changed paths:
    M llvm/include/llvm/CodeGen/AtomicExpandUtils.h
    M llvm/lib/CodeGen/AtomicExpandPass.cpp
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-f32-agent.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-f32-system.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-f64-agent.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-f64-system.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-i32-agent.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-i32-system.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-i64-agent.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-i64-system.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-rmw-fadd-flat-specialization.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-rmw-fadd.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-rmw-fmax.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-rmw-fmin.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-rmw-fsub.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-v2bf16-agent.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-v2bf16-system.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-v2f16-agent.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-v2f16-system.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomicrmw-flat-noalias-addrspace.ll

  Log Message:
  -----------
  AtomicExpand: Copy metadata from atomicrmw to cmpxchg

When expanding an atomicrmw with a cmpxchg, preserve any metadata
attached to it. This will avoid unwanted double expansions
in a future commit.

The initial load should also probably receive the same metadata
(which for some reason is not emitted as an atomic).



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