https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93090
--- Comment #4 from David Malcolm <dmalcolm at gcc dot gnu.org> --- FWIW there's also: https://github.com/antoyo/rustc_codegen_gcc which isn't a GCC Rust frontend per se, but uses libgccjit to embed GCC as a code generation backend inside the existing rustc compiler (I'm the author/maintainer of libgccjit, and a fan of both approaches).
