[llvm-branch-commits] [clang] Ofast deprecation clarifications (PR #101005)

[Aaron Ballman via llvm-branch-commits]

https://github.com/AaronBallman commented:

Thank you for working on this!

I think we need these changes to be against `main` and not `19.x`, aside from the release notes (otherwise we're losing the documentation in 20.x). For the release notes, I think we can talk to @tstellar and @tru about getting the 19.x notes updated once we've finalized the wording for it.

One other change we should probably make at the same time is to update `Options.td` to use `HelpTextForVariants` so the help text for Flang does not suggest the option is deprecated in their driver.

https://github.com/llvm/llvm-project/pull/101005