[llvm-branch-commits] [llvm] RegAlloc: Use new approach to handling failed allocations (PR #128469)

[Matt Arsenault via llvm-branch-commits]

arsenm wrote:

### Merge activity

* **Feb 26, 1:16 AM EST**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/128469).


https://github.com/llvm/llvm-project/pull/128469