From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20036 invoked by alias); 16 Jan 2014 21:54:59 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Received: (qmail 20025 invoked by uid 89); 16 Jan 2014 21:54:59 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-3.1 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS,SPF_PASS autolearn=ham version=3.3.2 X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Thu, 16 Jan 2014 21:54:57 +0000 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s0GLstUn027700 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Thu, 16 Jan 2014 16:54:56 -0500 Received: from barimba (ovpn-113-85.phx2.redhat.com [10.3.113.85]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id s0GLssru018044 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Thu, 16 Jan 2014 16:54:55 -0500 From: Tom Tromey To: gdb-patches@sourceware.org Subject: Re: [PATCH] rearrange struct value to save memory References: <1389294182-982-1-git-send-email-tromey@redhat.com> Date: Thu, 16 Jan 2014 21:54:00 -0000 In-Reply-To: <1389294182-982-1-git-send-email-tromey@redhat.com> (Tom Tromey's message of "Thu, 9 Jan 2014 12:03:02 -0700") Message-ID: <878uuflhht.fsf@fleche.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-SW-Source: 2014-01/txt/msg00655.txt.bz2 >>>>> "Tom" == Tom Tromey writes: Tom> This patch rearranges struct value a tiny bit, moving the "regnum" Tom> field into a hole. This saves 8 bytes per value on a 64-bit machine, Tom> and 4 bytes per value on a 32 bit machine. I think it does not Tom> negatively affect readability or performance. Tom> Built and regtested on x86-64 Fedora 18. I'm checking this in now. Tom