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Re: Intel 386 and AMD x86-64 Options
- From: Richard Henderson <rth at redhat dot com>
- To: Ander <ander1 at wanadoo dot es>
- Cc: gcc at gcc dot gnu dot org
- Date: Mon, 3 Mar 2003 15:28:36 -0800
- Subject: Re: Intel 386 and AMD x86-64 Options
- References: <1046725249.388.23.camel@agaliaretph>
On Mon, Mar 03, 2003 at 10:00:48PM +0100, Ander wrote:
> I want to know if there is any difference in using -march=i686,
> -march=pentium3, -march=athlon, -march=athlon-xp or if they are all
> synonyms of -march=i686.
They are not synonyms. P3 adds SSE1, Athlon has different
scheduling characteristics, etc. You also failed to mention P4,
but perhaps that was obvious.
r~