Performace guidlines (tipps)?

[Clemens Eisserer]

Hi!

I want to write some gnu-apps which should be primary optimizied for gcj.
Are there some performance tipps whats better and faster? Are there
somewhere written guidlines avaible?
I'm currently using gcj-3.0.4. Will an upgrade enhace performance over 20%?

one example:

is  this better:

class c;

while(n>m)
{
     c=new class();
}

or is it better to create the "class c;" in the loop.

I hope you can help me writing really good, fast and stable gnu-proggis
for my school.

cu Clemens