From: Richard Henderson <rth@redhat.com>
To: Fariborz Jahanian <fjahanian@apple.com>
Cc: gcc@gcc.gnu.org
Subject: Re: [RFH] - Less than optimal code compiling 252.eon -O2 for x86
Date: Mon, 27 Jun 2005 19:56:00 -0000 [thread overview]
Message-ID: <20050627195619.GA12102@redhat.com> (raw)
In-Reply-To: <6269B965-AF17-4FBD-B3ED-B1BA96936380@apple.com>
On Mon, Jun 27, 2005 at 12:21:01PM -0700, Fariborz Jahanian wrote:
> FYI, the change to rtl in -O2 vs. -O1 is that -O2 includes -fforce-
> mem which forces memory operands to registers to make memory
> references common sub-expressions.
Hmm. I would suspect this is obsolete now. We'll have forced
everything into "registers" (or something equivalent that we
can work with) during tree optimization. Any CSEs that can be
made should have been made.
r~
next prev parent reply other threads:[~2005-06-27 19:56 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-24 22:06 Fariborz Jahanian
2005-06-24 22:17 ` Andrew Pinski
2005-06-24 23:46 ` fjahanian
2005-06-25 0:06 ` Steven Bosscher
2005-06-30 14:42 ` fjahanian
2005-06-30 15:03 ` fjahanian
2005-06-27 19:20 ` Fariborz Jahanian
2005-06-27 19:56 ` Richard Henderson [this message]
2005-06-27 21:52 ` Fariborz Jahanian
2005-06-30 16:04 ` fjahanian
2005-06-30 16:08 ` Andrew Pinski
2005-06-30 16:55 ` Steven Bosscher
2005-06-30 17:48 ` Jeffrey A Law
2005-06-30 18:12 ` Bernd Schmidt
2005-06-30 18:19 ` Joe Buck
2005-06-30 18:25 ` Giovanni Bajo
2005-06-30 18:23 ` Jeffrey A Law
2005-06-30 19:06 ` Fariborz Jahanian
2005-06-30 19:47 ` Steven Bosscher
2005-06-30 21:30 ` Fariborz Jahanian
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