SPEC2000 comparison of LLVM-3.2 and coming GCC4.8 on x86/x86-64

[Duncan Sands]

Hi Vladimir, thanks for these numbers.

...
>    Therefore I had to use *Dragonegg* (a GCC plugin which uses LLVM
>    backend instead of GCC backend) for generation of Fortran benchmarks
>    by LLVM.
...
>    I believe such progress is achieved mostly because of a *new RA*
>    introduced in LLVM 3.0 and *auto-vectorization*.

I don't think it can be auto-vectorization, because I forgot to turn on the
LLVM auto-vectorizer in dragonegg-3.2 (oops!).

Ciao, Duncan.