[llvm-branch-commits] [llvm] AtomicExpand: Copy metadata from atomicrmw to cmpxchg (PR #109409)

[Matt Arsenault via llvm-branch-commits]

arsenm wrote:

### Merge activity

* **Oct 31, 2:43 PM EDT**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/109409).


https://github.com/llvm/llvm-project/pull/109409