rustc_codegen_gcc VS Rustlings

Alternatively, there's another initiative called codegen_gcc which is about using GCC as a backend for the rustc compiler. It's (much) more advanced in Rust support, but I am not sure how easy it would be to use a modified libgccjit from there.

In addition to what others have said about platform support, Rust is also on its way to gaining more platform support through rustc_codegen_gcc, the GCC codegen backend for rustc, as an alternative to the LLVM backend. That means many of the platforms GCC supports will suddenly become available with Rust.

Yeah, rustc_codegen_gcc is a GCC backend for rustc, and its making a lot of good regular progress.

gcc-rs is one of two projects for bringing Rust to gcc. gcc-rs is the more ambitious of the two, with an entirely new frontend. There is also rustc_codegen_gcc (https://github.com/rust-lang/rustc_codegen_gcc) that keeps the rustc frontend, and only swaps out LLVM for GCC at the codegen stage.

Fixing unwinding in release mode is still ungoing. I could use some help here, so anyone with some understanding of unwinding, landing pads or GCC, please come on this issue to discuss this.

Additionally, there is gcc codegen for rustc (https://github.com/rust-lang/rustc_codegen_gcc), which is not a compiler per se, but an alternative code generator, with more architectures supported and other nice things. It's also coming along, but there's still a lot of work to do there too. There's also Cranelift codegen (https://github.com/bjorn3/rustc_codegen_cranelift), which is designed to make debug builds faster, but this is not as exciting/useful as the other 2.

Good idea. I added the tag "help wanted" to the issue.

Also, there are indeed ABI issues, e.g. for 128-bit integers and NaN.

I'm excited about both the backend & the frontend.

There is also a project for rustc to use GCC instead of LLVM for codegen.

https://github.com/rust-lang/rustc_codegen_gcc

Zed is great, have been using it to do the Rustlings exercises and learn Rust:

https://github.com/rust-lang/rustlings

If you've been looking for an excuse to learn Rust, check it out.

Doing the rustlings conversions/from_into task which asks

However, I stumbled across Tauri (as a replacement for Electron), and installed Rust just to get Tauri to work. A few days later, I installed Rustlings (https://github.com/rust-lang/rustlings) on a whim, and did the first exercise.

Rust also has something similar which is where I believe Zig drew inspiration from as well: https://github.com/rust-lang/rustlings

Rustlings gives a great introduction to the language:

https://github.com/rust-lang/rustlings

Disclaimer: I write JavaScript

Consider solving puzzles and exercises from rustlings and / or try the Rust track at exercism which I found very valuable.

Rustlings(for learning by doing): https://github.com/rust-lang/rustlings