Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
Last week GCC 4.5.0 entered the world with improvements to the experimental C++0x support, Graphite-powered automatic parallelization support, compatibility with new ARM processors, Intel Atom and AMD Orochi optimizations, link-time optimization, and GCC plug-in support. Over the weekend we decided to benchmark this major update to the GNU Compiler Collection to see how its performance compares to that of GCC 4.3 and 4.4.
GCC 4.4.0 was released in April of 2009 while GCC 4.3.0 made it out in March of 2009. We could not benchmark any release older than GCC 4.3.0 due to build problems on Ubuntu 10.04 LTS. We built GCC 4.3.0, 4.4.0, and 4.5.0 from source on Ubuntu 10.04 with the only configuration being defining the x86_64-linux-gnu target and leaving all other options at their defaults. All three versions of GCC were built using Ubuntu's GCC 4.4.3 installation. For those interested in how LLVM/Clang is now performing against GCC 4.5, we will have such benchmarks of LLVM-GCC and LLVM Clang later this week compared to these GCC 4.3/4.4/4.5 numbers.