[llvm-branch-commits] [llvm] AMDGPU: Delete spills of undef values (PR #119684)

[Matt Arsenault via llvm-branch-commits]

arsenm wrote:

### Merge activity

* **Dec 17, 12:51 AM EST**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/119684).


https://github.com/llvm/llvm-project/pull/119684