GCC, the ultimate portable compiler, otherwise known as the GNU Compiler Collection, has been around since 1987. LLVM, first came onto the scene seven years ago in the form of a paper entitled "Architecture for a Next-Generation GCC", which was presented to the 2003 Annual GCC Developers Summit by Chris Lattner and Vikram Adve. LLVM was conceived as a modular version of GCC, and has had some succe