Full optimizing compiler in a week with AI (blog.paulbiggar.com)

A significant milestone has been achieved in the realm of AI-driven software development as Claude Code successfully generated a full optimizing compiler for Darklang within just two weeks. This impressive feat not only marks the first compiler ever for Darklang, a language in development since 2016, but it also showcases the advanced capabilities of AI in creating complex software systems. The compiler supports an extensive range of features, including support for native ARM64 binaries, advanced data structures, and various optimizations that enhance performance, positioning it close to established languages like OCaml and Rust. From a technical perspective, the compiler boasts a sophisticated architecture with multiple levels of Intermediate Representation, comprehensive optimization strategies, and effective memory management through reference counting rather than traditional garbage collection. The project's success illustrates not only AI's potential to accelerate software development—reducing what would typically take years of manual coding into weeks—but also its ability to implement critical optimizations and advanced programming concepts. As AI tools like Claude Code evolve, they could revolutionize the approach to compiler design and broad software development practices, paving the way for more efficient programming languages and systems.