I don't recall that the FreeBSD version of egcs is built with Haifa turned on, which is supposed to improve optimizations as the level is increased (more aggressive instruction scheduling.)
> With egcs, the '-O' flag doesn't specify the optimization level like it > does in GCC. It specifies the desired stability of the generated code. Lower > numbers (0,1,2) request higher stability. ;) > > DS > > > Dan Nelson wrote: > > > -O4 doesn't exist in egcs (or it didn't a month or so ago). According > > > to the source, -O2 enables all optimizations except -funroll-all-loops, > > > and all -O3 does is enable -funroll-all-loops. > > > > I think I recall reading somewhere that EGCS uses -O numbers > 3 to test > > experimental optimizations. To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-current" in the body of the message
