[libcxx-commits] [libcxx] [libc++] Add basic constant folding for std::format (PR #107197)

[Mark de Wever via libcxx-commits]

https://github.com/mordante requested changes to this pull request.

Sorry I seem to have missed this patch before,
Thanks for working on this!

I have a hard time to review the patch
- the patch does not describe what it does, there are only benchmarks
- the code has no comment.

Did you benchmark what to overhead for the types are?

https://github.com/llvm/llvm-project/pull/107197