Optimisation

Christian chris at wh2-227.st.uni-magdeburg.de
Wed Sep 6 06:41:01 PDT 2000


On Wed, 6 Sep 2000, Keith Shapiro wrote:

> > I have been attempting to build a very highly optimised system (-O6
> > -march=i686 -mcpu=i686) using pgcc-2.95.3.  My problem is this:  When I
> 
> Be aware that with gcc-2.95.2 (so more than likely pgcc) that the i686
> architecture is Pentium Pro only, NOT Pentium 2/3.  Try using "-march=i586
> -mcpu=i586" instead.

Mmh, I used "-O3 -mcpu=pentiumpro -march=pentiumpro" on almost everything
I build. It works fine although I've got a Pentium II machine. Is there
any difference between the i686 and pentiumpro options?

Christian







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