From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20615 invoked by alias); 11 Dec 2009 07:54:43 -0000 Received: (qmail 20568 invoked by uid 48); 11 Dec 2009 07:54:24 -0000 Date: Fri, 11 Dec 2009 07:54:00 -0000 Message-ID: <20091211075424.20567.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug target/41653] not optimal result for multiplication with constant when -Os is specified In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "carrot at google dot com" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2009-12/txt/msg01107.txt.bz2 ------- 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