Chibicc is a C11 compiler designed as a reference implementation for studying compiler construction. It translates C source code into machine-specific assembly instructions by utilizing a pipeline that includes lexical analysis, recursive descent parsing, and single-pass code generation. The project serves as an educational tool for understanding the internal architecture of compilers, from initial tokenization to the final emission of machine code.
The compiler distinguishes itself through its self-hosting capability, which allows the software to compile its own source code into a functional executable binary. This process is supported by a verification suite that ensures language feature compliance and binary integrity. To manage the complexities of the C language, the implementation includes a preprocessor that handles conditional directives and macro expansion, utilizing hidesets to prevent infinite recursion during the translation process.
The system incorporates diagnostic reporting to provide visual feedback on syntax and structural violations. It also includes internal utilities for handling UTF-8 character processing, identifier validation, and dynamic memory management for strings and arrays, ensuring the compiler can process diverse source code inputs efficiently.
