[libcxx-commits] [libcxx] [libc++] Introduce basic_string::__recommend_growing (PR #162633)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne approved this pull request.

LGTM w/ small comments and assuming no regression in the string benchmarks and SPEC.

https://github.com/llvm/llvm-project/pull/162633