IIRC gcc generates somewhat faster machine code. clang is available for Windows as clang-cl from here: http://llvm.org/releases/download.html http://llvm.org/r

IIRC gcc generates somewhat faster machine code. clang is available for Windows as clang-cl from here: http://llvm.org/releases/download.html http://llvm.org/releases/download.html Here's the status page for compatibility with MSVC (clang 3.9, i.e. current development version): http://clang.llvm.org/docs/MSVCCompatibility.html http://clang.llvm.org/docs/MSVCCompatibility.html