http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44194
--- Comment #33 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-06-20 15:27:06 UTC --- > I think these two are totally independent of each other -- one should not be > gated against each other. If Eawaran's approach is completely flawed, that is > different story. With this change, we at least make incremental improvement. > > Not familiar with the rtl expander, but I guess the spilling was there > probably > for a deeper reason. If you have an insight, you can of course point it out. See comment #22. It's an incremental improvement, but maybe we can avoid wasting time and memory by creating RTXes and Trees that will be thrown away immediately after. I don't really see what we risk by trying.