[libcxx-commits] [libcxx] [libc++] Optimize the std::mismatch tail (PR #83440)

[Konstantin Varlamov via libcxx-commits]

https://github.com/var-const requested changes to this pull request.

Can you please add a brief description of the optimization to the PR description, in addition to the (great) benchmarks?

https://github.com/llvm/llvm-project/pull/83440