From: Zack Weinberg <zack@codesourcery.com>
To: Roger Sayle <roger@eyesopen.com>
Cc: gcc@gcc.gnu.org, gcc-patches@gcc.gnu.org
Subject: Re: Bootstrap times on mainline are getting worse
Date: Sun, 20 Oct 2002 15:09:00 -0000 [thread overview]
Message-ID: <20021020002644.GA7700@codesourcery.com> (raw)
In-Reply-To: <Pine.LNX.4.33.0210191234420.9286-100000@www.eyesopen.com>
On Sat, Oct 19, 2002 at 12:47:04PM -0600, Roger Sayle wrote:
>
> > I still think it's worth shrinking processor_costs - we're getting
> > nickled and dimed to death on cache utilization, and this is a cheap
> > way to get quite a bit of space back.
>
> I agree it does no harm, and potentially some good.
Thinking about it a bit more, the gain could be totally wiped out by
having to do more work to access byte fields. I don't think this is a
problem for an x86 native compiler, but it'd be useful to
know. Sebastian, could you post size -A reports for stage3 cc1 before
and after the patch?
> Saving a few hundred bytes is a step in the right direction, even if
> it'll have little overall effect on GCC's multi-megabyte memory
> footprint.
I should finish the bytecoded-insn-recog.c patch RTH and I started
back in 1999. How does ~200K off the size of the text segment sound?
(at a cost of 20-50K in .rodata, IIRC)
zw
next prev parent reply other threads:[~2002-10-20 0:26 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-19 14:51 Roger Sayle
2002-10-19 17:26 ` Zack Weinberg
2002-10-20 1:23 ` Roger Sayle
2002-10-20 15:09 ` Zack Weinberg [this message]
2002-10-19 18:36 ` Geert Bosch
2002-10-20 5:46 ` Tim Prince
-- strict thread matches above, loose matches on Subject: below --
2002-10-19 13:51 Roger Sayle
2002-10-17 17:10 Robert Dewar
2002-10-17 17:26 ` Diego Novillo
2002-10-17 12:51 Diego Novillo
2002-10-17 13:02 ` Andreas Schwab
2002-10-18 4:34 ` Michael Ritzert
2002-10-18 4:52 ` Kaveh R. Ghazi
2002-10-18 5:42 ` Diego Novillo
2002-10-18 9:02 ` Kaveh R. Ghazi
2002-10-18 9:48 ` Diego Novillo
2002-10-18 12:34 ` David Edelsohn
2002-10-19 12:01 ` Pop Sébastian
2002-10-19 14:14 ` Zack Weinberg
2002-10-20 9:19 ` Pop Sébastian
2002-10-20 14:41 ` Pop Sébastian
2002-10-20 15:41 ` Pop Sébastian
2002-11-04 17:54 ` Pop Sébastian
2002-10-17 14:22 ` Neil Booth
2002-10-17 14:49 ` Diego Novillo
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