Tracking Issue for `profile-sample-use` and `debug-info-for-profiling`

This is a tracking issue for the -Zprofile-sample-use and -Zdebug-info-for-profiling compiler flags.

About tracking issues

Tracking issues are used to record the overall progress of implementation.
They are also used as hubs connecting to other relevant issues, e.g., bugs or open design questions.
A tracking issue is however not meant for large scale discussion, questions, or bug reports about a feature.
Instead, open a dedicated issue for the specific matter and add the relevant feature gate label.
Discussion comments will get marked as off-topic or deleted.
Repeated discussions on the tracking issue may lead to the tracking issue getting locked.

Steps

• Implement the RFC: https://github.com/rust-lang/rust/pull/87918
• Adjust documentation (see instructions on rustc-dev-guide)
  • Unstable docs: Unstable book page and corresponding PR (the same as "RFC" above since feature itself and unstable docs were added in the same PR.
• Style updates for any new syntax (nightly-style-procedure)
  • N/A since it's a compiler flag without any syntax change
• Stabilization PR (see instructions on rustc-dev-guide)
  • https://github.com/rust-lang/rust/pull/155942

Unresolved Questions

No unresolved questions was found yet.

Implementation history

• https://github.com/rust-lang/rust/pull/87918

This is a tracking issue for Rust compiler flags, not a standalone change. Read the implementation history at PR 87918 and the stabilization PR at PR 155942, then review the checklist and linked stabilization-guide instructions. The listed work is complete when stabilization and its documentation requirements are resolved.