------- Comment #4 from pacho at condmat1 dot ciencias dot uniovi dot es
2010-09-01 16:06 -------
(In reply to comment #3)
> (In reply to comment #2)
> > gcc-4.5 is still hardmasked downstream in Gentoo, then, I am unsure about
> > installing it :-/, are you sure this bug could be solved in 4.5* ?
> 1. -march=native is changed in gcc 4.5.
Will try then with 4.5.1 (4.5.2 is still not available on Gentoo)
> 2. Your cpu is Core.
> 3. -mtune=generic generates the fastest code for Core.
> 4. Prescott and Core have the same instruction set.
Is -mtune=generic better than -mtune=prescott? "man gcc" looks to suggest last
one would be better:
If you know the CPU on which your code will run, then you should use the
corresponding -mtune option instead of -mtune=generic.