qmail compilation and optimization

[qmail-return-57194-archive=jab . org]

Hi all,

I've seen the standard qmail compilation flags are just "-O2".

Does anybody tried any other level of optimization like
"-O6... -fomit-frame-pointer... -DCPU=686..." ? What would be the benefits
of compiling with these flags ? Is this safe ?

I'm using egcs version egcs-1.1.2-30 in a Linux box.

Thanks
Renato.

( I know this is more of a compiler issue, but I think it is worth to
exchange experiences... )