Re: [TESTING] ssse3 backport from gcc 4.3

On Wed, Mar 9, 2011 at 9:49 AM, George Liaskos <geo.liaskos_at_gmail.com>wrote:

> > I have prepared a patch that finishes the "core2" support part and
> > backports from gcc-4.3
> > the SSSE3 instruction set (-mssse3, -mno-ssse3).
> > It is enabled for -march=core2 by default.
> >
> > Testing and comments are welcome.
> >
> > Patch:
> > http://people.freebsd.org/~mm/patches/head-gcc-ssse3.patch
> >
> > The backport covers three GPLv2 revisions from gcc 4.3:
> > http://gcc.gnu.org/viewcvs?view=revision&revision=117958 (applies
> cleanly)
> > http://gcc.gnu.org/viewcvs?view=revision&revision=121687 (small
> adjustment)
> > http://gcc.gnu.org/viewcvs?view=revision&revision=121726 (small
> adjustment)
> > http://gcc.gnu.org/viewcvs?view=revision&revision=123639 (small
> adjustment)
>
> Just finished compiling world and kernel with the patch, no issues
> whatsoever but i have some questions :)
>
> I have a Q6600, with -march=native gcc still uses nocona instead of
> core2, clang does the right thing. Is this a bug?
> Is it possible to support sse4.1 for penryn or is there a problem with
> the license?
>
> Regards
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I also had success with this patch - running on a Core 2 Duo E4500.  rebuilt
world & kernel both with and without CPUTYPE=core2, so it at least doesn't
break anything.  Can you recommend a way to test Core2 specific features?

dave c