This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: Loop unrolling-related SPEC regressions?


Jan Hubicka <jh@suse.cz> writes:

> I am playing with the idea of making -O behaving like -f and allowing -Ospeed
> "optimize for maximal speed for common circmuatens" and -Osize.  We can also
> invent -O[no]debug "prohibit optimizations that make debugging dificult, like
> tail call optimization, frame pointer ellimination, or (currently) register
> renaming", 

Don't we already have these?  -O3 is what you call 'Ospeed', -Os is
what you call 'Osize', '-O0' is Odebug.

-- 
- Geoffrey Keating <geoffk@geoffk.org> <geoffk@redhat.com>


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]