[libcxx-commits] [libcxx] [libc++] Optimize {std, ranges}::for_each for iterating over __trees (PR #164405)

[A. Jiang via libcxx-commits]

frederick-vs-ja wrote:

Looks like that we should immediately return when the range is empty.
https://github.com/llvm/llvm-project/blob/f440b5c12df500f86f9407e625d42f92913e8367/libcxx/include/__tree#L1542-L1546

https://github.com/llvm/llvm-project/pull/164405