[MPlayer-dev-eng] [PATCH] configure: -mtune=generic for runtime CPU detection

[Dominik 'Rathann' Mierzejewski]

On Saturday, 31 March 2007 at 12:57, Zuxy Meng wrote:
> Hi,
> 
> 2007/3/30, Dominik 'Rathann' Mierzejewski <dominik at rangers.eu.org>:
> >On Friday, 30 March 2007 at 05:13, Zuxy Meng wrote:
> >> Hi,
> >>
> >> gcc 4.2.0 (currently in rc1 stage) will support "generic"
> >> optimization, which promises to deliver optimal performance on a
> >> collection of "comtemporary" CPUs (now including AMD Athlon, AMD
> >> Opteron, Intel Pentium M, Intel Pentium 4 and Intel Core 2). This
> >> patch add this feature for mplayer, falling back to i686 for older
> >> gcc.
> >
> >GCC 4.1 shipped with Fedora is patched and already supports it.
> 
> So maybe you can help test it:-)

I've been building MPlayer binaries with CFLAGS set to -O2 -mtune=generic
for months without any adverse effects (though I haven't benchmarked
if it's slower or faster than with configure-selected CFLAGS).

> BTW have they backported the "march=native" option too?

Not to FC6. It might be present in Fedora 7, but I haven't checked that.

Regards,
R.

-- 
MPlayer developer and RPMs maintainer: http://mplayerhq.hu http://rpm.livna.org
There should be a science of discontent. People need hard times and
oppression to develop psychic muscles.
	-- from "Collected Sayings of Muad'Dib" by the Princess Irulan