If you want an example of a llvm-based programming language porting to a new architecture, see [1]. The issues has a checklist of things that were done, and a r

If you want an example of a llvm-based programming language porting to a new architecture, see [1]. The issues has a checklist of things that were done, and a readable diff. Some of the things that needed to be implemented in the frontend was the ABI, unwind support, C bindings for the new architecture. Some of these don't apply as much to rust but you can see that LLVM doesn't do a perfect job. The diff is still quite small however. [1] https://github.com/crystal-lang/crystal/pull/3491 https://github.com/crystal-lang/crystal/pull/3491