GCC 4.7.0 and LLVM / Clang 3.1 SVN (as of 27 March 2012) and AMD Open64 4.5.1 testing from an AMD FX-8150 Bulldozer Eight-Core (bdver1). Testing of GCC 4.7 and LLVM/Clang 3.1 and AMD Open64 4.5.1 when building the tests with "-march=k8 -O3" CFLAGS/CXXFLAGS and then again when using "-march=native -O3" for tapping the bdver1 compiler optimizations for AMD Bulldozer. Benchmarking for a future article on Phoronix.com. Both compilers were in a release build per the compiler configurations listed on system table. The AMD Open64 release from the AMD-provided x86_64 binary.