It's still a work in progress, with only x86 even supported. It's not a GCC frontend, it generates C, and is based on an old version of rust (1.19). Right now I think it's only useful to bootstrap rust, but that doesn't help you get a backend for another architecture.
https://github.com/thepowersgang/mrustc
It's still a work in progress, with only x86 even supported. It's not a GCC frontend, it generates C, and is based on an old version of rust (1.19). Right now I think it's only useful to bootstrap rust, but that doesn't help you get a backend for another architecture.