fikovnik

But not that is conceptually related, only that the copy-and-patch is faster than cranelift in that particular scenario.

Featuring self-modifying code - it can repatch emitted instruction at runtime based on the current value type.

Here is a function that I use for exactly this:

https://gist.github.com/fikovnik/e0fa86aea29f761b6a4ddcfda46...