[libcxx-commits] [libcxx] [libc++][ranges] optimize the performance of `ranges::starts_with` (PR #84570)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne approved this pull request.

I think this LGTM, I don't see any problem with the patch and it does seem to provide a fair speedup. @philnik777 would you agree?

https://github.com/llvm/llvm-project/pull/84570