> Jan Hubicka wrote: > >I should note that comparison to ICC is not quite fair since it lacks > >Opteron tunning... > > I think you may be comparing oranges to tangerines -- not as bad as > apples and oranges, but still potentially an invalid comparison. > > In my experience the extra registers of the Opteron provide a > significant benefit; GCC has an unfair advantage if ICC only generated > code for the small set of x86 registers.
Forgot to mention, all the tests was x86-64, so ICC used extra registers too. Also to clarify, the C++ benchmarks was done with -O3 only. Honza > > ..Scott
