Not at all. The main way is to reduce pressure on the GC by reducing allocations, which is a fairly straightforward process thanks to good support from the tool

Not at all. The main way is to reduce pressure on the GC by reducing allocations, which is a fairly straightforward process thanks to good support from the tooling. Past that, you either call out to C via FFI or give up and rewrite in C/C++/Rust. Nobody really bothers with the asm.