[libcxx-commits] [libcxx] [libc++] Optimize ranges::{for_each, for_each_n} for segmented iterators (PR #132896)

[Peng Liu via libcxx-commits]

winner245 wrote:

With `std::for_each` backported to C++11 in #134960 and `std::for_each_n` carved out into #135468, this PR is now much cleaner,  focusing exclusively on `std::ranges::{for_each, for_each_n}`. 

https://github.com/llvm/llvm-project/pull/132896