[libcxx-commits] [libcxx] [libcxx] Optimize `ranges::fold_left_with_iter` for segmented iterators (PR #177853)

[Nikolas Klauser via libcxx-commits]

https://github.com/philnik777 commented:

Please add tests for this and benchmarks, as well as their numbers.

https://github.com/llvm/llvm-project/pull/177853