using non-standard optflags (-O3, in particular)

[Till Maas]

On Friday 09 February 2007 18:24, Ralf Corsepius wrote:

> There are reasons why certain optimizations are in -O3 and why they are
> not in -O2, e.g. because some of them do not provide sufficient
> performance gains, some of them because they are too architecture
> specific, some of them because they are unsafe, some of them because
> they are considered unstable/experimental.

According to the gcc manpage -O3 enables only three more optimizationes 
than -O3 does:

-finline-functions
-funswitch-loops
-fgcse-after-reload

Are all of them bad or is there more optimization done than is described 
there?

Regards,
Till
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: not available
URL: <http://listman.redhat.com/archives/fedora-extras-list/attachments/20070210/46a16a67/attachment.sig>