Optimizing gcc g77 code?

[Oliver Pust]

Hi,

I wonder what are the best options to get the fastest executables out of
Fortran/C-code generated by gcc/g77? For Intel gcc there are optiopns
like -m... and so on. 
Are there special math libraries available like sunmath for Solaris?
I have code with a huge number of + and * operations and for the time
being it runs much slower on my Performa 6400 than on a Pentium 166....

Thank you very much,
	Oliver 

-- 
   Dipl.-Ing. Oliver Pust              Holstenhofweg 85
 Universitaet der Bundeswehr              22043 Hamburg
Institut fuer Stroemungslehre    Tel.: +49-40-6541-2167
   und Stroemungsmaschinen        Fax: +49-40-6541-2743
            oliver.pust at unibw-hamburg.de
           http://www.unibw-hamburg.de/pfs

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