I was just looking into LLVM the other day as I was researching the possibilities of cross-compiling Rust to m68k on my Mac and now I simply can't stop reading up on LLVM!

Support for Motorola 68000 has never been finished but this guy's abandoned fork offers an interesting glimpse into how one might start going about it though:

https://github.com/kwaters/llvm-m68k/commits/m68k

A bit over my head for now but I'm using this as a fun occasion to get back into "proper" computer science. Dabbling is my favourite learning mode so consulting the LLVM Programmer's Manual while hacking on a more isolated and really simple task is something I'm very much looking forward to at this point.

Still, if there is anybody with more knowledge who could chip in a bit on supporting m68k or LLVM in general I'd be super curious to read about it :)