extra flags in O3 than O2??

[vkaushal21]

in optimization level 3 of gcc there are certain flags which are
extra/ differ from O2
i am unable to find a list of these flags.
please send me the list or a link for these.

 

[Keith Thompson]

in optimization level 3 of gcc there are certain flags which are
extra/ differ from O2
i am unable to find a list of these flags.
please send me the list or a link for these.

Assuming that the extensive documentation provided with gcc doesn't
answer your question, try posting to gnu.gcc.help.

 

[CBFalconer]

in optimization level 3 of gcc there are certain flags which are
extra/ differ from O2
i am unable to find a list of these flags.
please send me the list or a link for these.

Try "info gcc".