While we have seen that Intel's Sandy Bridge is doing well on the new GCC 4.7 compiler (along with LLVM/Clang 3.1), has AMD's Bulldozer CPU architecture advanced at all for this leading multi-platform compiler? Up today are benchmarks of GCC 4.7.0 -- with comparative benchmarks going back to GCC 4.4 -- from an AMD FX-8150 Eight-Core Bulldozer setup.
GCC 4.4.7, GCC 4.5.3, GCC 4.6.3, and GCC 4.7.0 were built from source with the same settings (--enable-checking=release --enable-languages=c,c++,fortran --enable-lto) and subsequently each compiler was used to build a range of Phoronix Test Suite test profiles to serve as benchmarks. The CFLAGS/CXXFLAGS were set to "-O3 -march=native" for all of the compiler tests.
The AMD FX-8150 test system was running Ubuntu 12.04 with the Linux 3.2 kernel. That is about it so let's have a look at the Linux compiler test results.