> Maybe one can transform slow code from high level languages to low level language
I think you are describing a compiler?
I mean reading this article:
1) Kotlin code --> Java byte code --> JVM execution (slow)
vs
2) Kotin code --> Rust/Zig code --> Zig compiler --> native execution (fast)
Compiler is involved in both cases but I was thinking of 2) where slower code in high level lang is converted to another lang code. The compiler of which is known to produce fast runinng code.
You’re describing a transpiler, but the problem is that idioms in a GC language like Kotlin don’t necessarily translate to a non-GC language like Rust or Zig. Add in the fact that Rust doesn’t have OO inheritance which is essential for a lot of JVM code to work (I don’t know much about Zig) and I’d be very suspicious of code generated by a Kotlin to Rust transpiler. (On the other hand, one of the first transpilers I ever encountered, web2c, worked well because the source language, Pascal, could be fairly easily translated into functional C without much if any sacrifice of speed or accuracy.)