GCC and Clang are the two dominant compilers that power low‑level systems programming. GCC, originally the GNU Compiler Collection, has been the standard choice for decades across Linux, BSD, and embedded targets, while Clang, introduced as part of the LLVM project, has gained traction for its modular design and tighter integration with modern tooling. Both compilers follow a multi‑stage compile process that transforms source code through preprocessing, parsing, semantic analysis, optimization, ...