llvm-project

09c266b7 - [libc++] Optimize std::for_each_n for segmented iterators (#135468)

[libc++] Optimize std::for_each_n for segmented iterators (#135468) This patch enhances the performance of `std::for_each_n` when used with segmented iterators, leading to significant performance improvements, summarized in the tables below. This addresses a subtask of https://github.com/llvm/llvm-project/issues/102817.