On Fri, Feb 11, 2005 at 04:38:03PM +0100, Sam Lauber wrote:
> I think Intel's confusing numbering system has confused
> you. All ix86 processors, if the expression
> x in first ix86 < x in second ix86
> holds true, then second ix86 is compatible. The i586 is
> NOT the Pentium.
So why does the GCC manual say that -mtune=pentium is equivalent to
-mtune=i586 ?
> the first Intel processors with built-in FPU. If you are
> asking for Pentium, try the following switches:
> -march=pentium
> -march=pentium -mmmx # Pentium MMX
or -march=pentium-mmx
> -march=pentium2
> -march=pentium3
> -march=celron
> -march=pentium4
> -march=prescott # this will probably get you in trouble
>
> If you use any of these switches, it will add FP
> instruction calls. -march=prescott has caused more than
> one problem elsewhere.
>
> Samuel Lauber
--
"Fanaticism consists in redoubling your efforts when you have forgotten
your aims."
- George Santayana
