[llvm] [profcheck] Option to inject distinct small weights (PR #159644)

[Mircea Trofin via llvm-commits]

mtrofin wrote:

### Merge activity

* **Sep 24, 6:38 PM UTC**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/159644).


https://github.com/llvm/llvm-project/pull/159644