Messages in this thread |  | | Date | Sat, 15 Mar 2008 22:11:25 +0100 | From | Willy Tarreau <> | Subject | Re: K8, EFFICEON and CORE2 support the cmovxx instructions. |
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On Sat, Mar 15, 2008 at 10:06:32PM +0100, Alexander van Heukelum wrote: > > > I'm quite sure that K8, EFFICEON and CORE2 support HAVE_CMOV, but > > > they did not set X86_CMOV. > > > > > > > Crusoe has CMOV as well.
So does GEODE_LX BTW
> I believe you... and the Makefile_32.cpu: it gets a -march=i686. I > also found out that I missed X86_ELAN, which is treated as a i486. > > Also, MGEODE_LX does not get any optimization flags. I think that > is unintentional, but what should they be?
in my experience (on user-space code), optimizing for "i586" gives good results. However, the cache is small, so everything which can reduce code size (especially loop/jump/function alignment) is worth checking.
Regards, Willy
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