Default flags with -O2

[LLeweLLyn Reese]

Anticipating a Reply <ruxyz@yahoo.com> writes:

> Hi ,
> 
>   Thanks for the response . 
> 
>   I know that the flags are documented ,

If you know that, why didn't you follow the link Eljay provided you
    with? Had you selected the manual appropriate to your version of
    gcc, selected 'GCC Command Options' , 'Options that control
    optimization', you would have found the descriptions, at the url I
    give below. However since you didnn't say which version you are
    using, so I assumed 3.3 . 

> but which all get used with -O2 , -O3 ,.....
[snip]

http://gcc.gnu.org/onlinedocs/gcc-3.3/gcc/Optimize-Options.html#Optimize%20Options