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From: "carrot at google dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/41653] not optimal result for multiplication with constant when -Os is specified
Date: Fri, 11 Dec 2009 07:54:00 -0000 [thread overview]
Message-ID: <20091211075424.20567.qmail@sourceware.org> (raw)
In-Reply-To: <bug-41653-17659@http.gcc.gnu.org/bugzilla/>
------- Comment #7 from carrot at google dot com 2009-12-11 07:54 -------
(In reply to comment #6)
> (In reply to comment #5)
>
> > Please submit patches to gcc-patches@gcc.gnu.org rather than attaching it to
> > the bug report.
>
> Also when doing so can you measure the impact of your patch with CSIBe and see
> code size numbers ?
>
Because of http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42258, this patch can't
reduce instructions, actually it brings one more instruction. Only when that
regression has been fixed, this patch can then take effect. I will do
thoroughly testing and evaluation after that.
--
carrot at google dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
BugsThisDependsOn| |42258
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41653
next prev parent reply other threads:[~2009-12-11 7:54 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-10 9:20 [Bug target/41653] New: " carrot at google dot com
2009-10-12 21:51 ` [Bug target/41653] " rth at gcc dot gnu dot org
2009-10-15 8:19 ` carrot at google dot com
2009-10-15 10:19 ` ramana at gcc dot gnu dot org
2009-12-07 8:59 ` carrot at google dot com
2009-12-11 0:23 ` ramana at gcc dot gnu dot org
2009-12-11 0:25 ` ramana at gcc dot gnu dot org
2009-12-11 7:54 ` carrot at google dot com [this message]
2009-12-12 1:08 ` rearnsha at gcc dot gnu dot org
2010-03-20 13:00 ` steven at gcc dot gnu dot org
2010-04-08 9:28 ` carrot at gcc dot gnu dot org
2010-04-08 9:30 ` carrot at google dot com
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