title: LLVM vs clang on OS X
body: <p>I have a question concerning llvm, clang, and gcc on OS X. </p>
  
  <p>What is the difference between the llvm-gcc 4.2, llvm 2.0 and clang? I know that they all build on llvm but how are they different? </p>
  
  <p>Besides faster compiling, what is the advantage of llvm over gcc?</p>