While coding recursive algorithms in C++ and Rust I have found, that they have some overhead due to performing recursive calls. Compilers can't inline such call

While coding recursive algorithms in C++ and Rust I have found, that they have some overhead due to performing recursive calls. Compilers can't inline such calls (with exception of tail-recursion). So, replacing recursion with manually-managed stack gives some performance boost. I am wondering why no major C++ compiler can do this for me automatically.