[llvm] [ctxprof] Support for "move" semantics for the contextual root (PR #134192)

[Mircea Trofin via llvm-commits]

mtrofin wrote:

### Merge activity

* **Apr 3, 9:32 PM EDT**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/134192).


https://github.com/llvm/llvm-project/pull/134192