Compilation Speedup Using C++ Modules - A Case Study

Explore a comprehensive case study on compilation speedup using C++20 Modules in this 44-minute conference talk from CppCon 2022. Delve into experimental results comparing compilation times of a modularized library with its original implementation across various compiling configurations. Examine the impact of optimization levels, debug information, and other compiler techniques on performance. Gain insights into the potential benefits of C++20 Modules for real-world projects, including a quick recap of module basics. Analyze the reasons behind the performance numbers and discuss future optimization techniques to further accelerate compilation processes. Consider the implications on code sizes, object ABI, and language standards. Learn from Chuanqi Xu, a Clang/LLVM compiler engineer, as he shares valuable findings to inform decision-making on adopting C++20 Modules in your projects.