LLVM/Clang 3.3 Delivers Speed Improvements

While LLVM/Clang doesn't yet have mainline support for OpenMP, the performance of GraphicsMagick is much faster on LLVM/Clang 3.3 over LLVM/Clang 3.2 for this latest-generation Intel hardware running Linux. (Contrary to what's reported on the graphs, the compiler flags for all testing were set the same between the 3.2 release and 3.3 SVN benchmarking.)

The resulting binaries may be faster with the newer LLVM/Clang code, but the compilation time is taking longer.