rust-lang/rustc_codegen_gcc

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1160 stars · 103 forks observed · 2026-09-01

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A GCC-based codegen backend for rustc that uses libgccjit for ahead-of-time compilation of Rust code. It allows compiling Rust on platforms unsupported by LLVM and leverages GCC's optimizations and architecture support.

Use cases

• compile rust code on platforms not supported by llvm
• use gcc optimizations for rust compilation
• test gcc patches with a rust backend
• port rust to new cpu architectures
• compare gcc vs llvm codegen performance for rust

When to choose

• you need to build Rust for a target architecture LLVM does not support
• you want to experiment with GCC's optimization pipeline on Rust code
• you are developing or testing GCC patches for Rust support

When to avoid

• you need a production-ready, fully stable Rust toolchain
• you rely on LLVM-specific tooling or diagnostics
• you want zero setup - it requires a patched libgccjit fork

Facets

library · maturity experimental

compiler build-tool developer-tools compilers programming-languages developer-tools rust cpp cross-platform rustc-backend gcc libgccjit codegen llvm-alternative linux

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