[clang] [llvm] [RFC][BPF] Do atomic_fetch_*() pattern matching with memory ordering (PR #107343)

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yonghong-song wrote:

This pull request has been used for the merged kernel patch:
   https://lore.kernel.org/r/20240909223431.1666305-1-yonghong.song@linux.dev

https://github.com/llvm/llvm-project/pull/107343