[all-commits] [llvm/llvm-project] 350579: clang: Allow targets to set custom metadata on ato...

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/clang-targets-set-custom-atomicrmw-metadata
  Home:   https://github.com/llvm/llvm-project
  Commit: 350579354c8e57c815e4f2f28be9413a1f0a1176
      https://github.com/llvm/llvm-project/commit/350579354c8e57c815e4f2f28be9413a1f0a1176
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2024-06-27 (Thu, 27 Jun 2024)

  Changed paths:
    M clang/lib/CodeGen/CGAtomic.cpp
    M clang/lib/CodeGen/CGExprScalar.cpp
    M clang/lib/CodeGen/CGStmtOpenMP.cpp
    M clang/lib/CodeGen/CodeGenFunction.h
    M clang/lib/CodeGen/TargetInfo.h
    M clang/lib/CodeGen/Targets/AMDGPU.cpp
    A clang/test/CodeGen/AMDGPU/amdgpu-atomic-float.c
    M clang/test/CodeGenCUDA/amdgpu-atomic-ops.cu
    A clang/test/OpenMP/amdgpu-unsafe-fp-atomics.cpp

  Log Message:
  -----------
  clang: Allow targets to set custom metadata on atomics

Use this to replace the emission of the amdgpu-unsafe-fp-atomics
attribute in favor of per-instruction metadata. In the future
new fine grained controls should be introduced that also cover
the integer cases.

Add a wrapper around CreateAtomicRMW that appends the metadata,
and update a few use contexts to use it.



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