The LLVM clang C++ compiler has exceeded all expectations the last year, gaining unprecedented new features that let you explore, rewrite, and rediscover your source code. This is a talk about the human story of a compiler: What can we achieve going beyond compilation? Why are we compelled to invent a better wheel? How can we make everyday life better for coders, and could the compiler itself become an instrument for wider social change? Developed by an eclectic team of academics, supercomputer hobbyists and vendors including Apple and Google, the LLVM project has proven itself as a hotbed of innovation leading the renaissance in C-family programming languages, recently receiving the coveted ACM Software System Award. Whether you're a kernel hacker, app developer or front-end designer, clang is different to other compilers, it's coming to a machine near you in 2014 and may well impact your work: Here's what you need to know.