Ok. thanks for the reply Mr. Gabriel. How can i do the bench marking of these options. Can i get some more information from somewhere on net. -Srini...
On Thu, 8 Mar 2001, Gabriel Paubert wrote: > > > On Thu, 8 Mar 2001, Srinivas Rao.M wrote: > > > > > hi, > > > > Please tell me the various set of compilation flags we should use in > > order to optimize our code. I want to maintain two seperate versions of > > my codebase: one with Speed optimized and the other with Space optimized. > > I have tried enabling the -O. but it is a general optimizer. I want to > > have two distinct codebases. > > Actually, the gcc code generation of PPC lacks in this area. There are > very few differences between -O2 -Os (first one is the standard for speed > although you might want to try -O3). -Os is in theory the space > optimization, but there are very few places in the rs6000/ppc description > that depend on whether the code should be optimized for space or not. > There will be some difference, but relatively very small. > > Regards, > Gabriel. > -- Give everything you have today, because anything left over is lost forever. -Mick Rashid ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
