[libcxx-commits] [libcxx] [libc++] Optimize string operator[] for known large inputs (PR #69500)

[via libcxx-commits]

EricWF wrote:

I would like you to write benchmarks that target the function you modified, ensure that you're case is covered there, then run them to show a performance improvement, as well as to verify that no regression occurred. 

https://github.com/llvm/llvm-project/pull/69500