[all-commits] [llvm/llvm-project] d4380f: [libc] Add `fetch_or` to the atomic interface

[Joseph Huber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d4380fcbb8ea9994f26ea3cd8a59bfa601c302d6
      https://github.com/llvm/llvm-project/commit/d4380fcbb8ea9994f26ea3cd8a59bfa601c302d6
  Author: Joseph Huber <jhuber6 at vols.utk.edu>
  Date:   2023-04-15 (Sat, 15 Apr 2023)

  Changed paths:
    M libc/src/__support/CPP/atomic.h

  Log Message:
  -----------
  [libc] Add `fetch_or` to the atomic interface

Summary:
This patch adds `fetch_or`. It is mainly useful for querying and set a
bit's status without using the more expensive `exchange` functions.