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Re: Final intermodule patch
- From: Geoff Keating <geoffk at geoffk dot org>
- To: Andreas Jaeger <aj at suse dot de>
- Cc: Andi Kleen <ak at suse dot de>, Geoffrey Keating <gkeating at apple dot com>, gcc-patches at gcc dot gnu dot org
- Date: 12 Jul 2003 20:53:42 -0700
- Subject: Re: Final intermodule patch
- References: <3DFA1DCC-B3E3-11D7-BDE9-003065A77310@apple.com><u8znjkf7mc.fsf@gromit.moeb>
Andreas Jaeger <aj@suse.de> writes:
> Mike Stump <mrs@apple.com> writes:
>
> > On Friday, July 11, 2003, at 03:36 AM, Andi Kleen wrote:
> >> Can you expand a bit on how usable this is yet?
> >
> > Should be fairly usable, though, it hasn't seen tons of use. It does
> > all of SPEC (well, except eon) for example, just to give you a flavor
> > of what has already been though it.
>
> Do you have any SPEC numbers that you can share? How much improvement
> does it bring?
If you just use this patch, you get a decrease in SPEC performance,
because GCC's current inlining heuristics don't work very well in that
situation. With improved heuristics (Dale's and Stuart's work), we
got significant improvement instead of a decrease.
(I won't quote numbers because some of them might be confidential, and
they won't be reproducible on any system you have now anyway.)
--
- Geoffrey Keating <geoffk@geoffk.org>