From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 17502 invoked by alias); 15 Jul 2009 09:47:24 -0000 Received: (qmail 17229 invoked by uid 48); 15 Jul 2009 09:47:10 -0000 Date: Wed, 15 Jul 2009 09:47:00 -0000 Message-ID: <20090715094710.17228.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug target/40730] redundant memory load In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "steven at gcc dot gnu dot org" 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: 2009-07/txt/msg01253.txt.bz2 ------- Comment #8 from steven at gcc dot gnu dot org 2009-07-15 09:47 ------- That redundant move has to be a separate issue, indeed. I would expect the register allocator to coalesce those registers. I hadn't expected this. I thought the result would be just the removal of the redundant load, but the code that comes out is bigger (14 instructions instead of 13) and has a completely different structure. I'll see if I can understand what is going on. Thus, mine. -- steven at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- BugsThisDependsOn| |20070 AssignedTo|unassigned at gcc dot gnu |steven at gcc dot gnu dot |dot org |org Status|NEW |ASSIGNED Last reconfirmed|2009-07-13 10:10:07 |2009-07-15 09:47:09 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40730