"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."
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