Biason::Julio::new();Rust GCC Backend was officially merged in the compiler.
https://github.com/rust-lang/compiler-team/issues/442#issuecomment-876358112
Merge rustc_codegen_gcc backend as compiler/rustc_codegen_gcc · Issue #442 · rust-lang/compiler-team
Proposal rustc_codegen_gcc is a new code generation backend for rustc using the libgccjit library from GCC. (Despite its name, libgccjit works for ahead-of-time compilation as well.) rustc_codegen_...