6.0 and -O2 option

[Norberto Meijome]

Rene Ladan wrote:
> On Sun, Aug 28, 2005 at 04:30:19PM +0400, Boris Samorodov wrote:
> 
>>Hi!
>>
>>
>>As for 5.x notes about -O2 (libalias, gcc) were removed at revision
>>1.229.2.7 of /usr/src/share/examples/etc/make.conf. But for 6.0-BETA3
>>we do have these warnings. Should they be removed as for 5.x? Is it
>>safe to use -O2 to build/install kernel, world, ports fro 6.0?
>>
> 
> Kernel and world seem to be ok with -O2, for ports it is not advised.

Hi,
I may have missed a thread or something (just let me know :) ) - why is 
-O2 not advised for ports on 6.0?
cheers,
Beto