ejit

ejit is a generic JIT/bytecode interpreter with a strong focus on compilation speed and portability. It's built on top of the excellent lightening pure JIT library, but adds a bytecode layer for systems that lightening doesn't support. The bytecode layer also grants some QoL improvements, such as an (effectively) unlimited number of virtual registers and a register allocator for mapping theses virtual registers down to physical registers and a slightly easier to use API (at least IMO).

Documentation is still a bit lacking and the library is under active development, but can already be used for some simpler usecases. See the posthaste language I implemented for a university course for example.

I also have a blog post about this library: https://metanimi.dy.fi/blog/ejit/