From owner-cvs-all Tue May 14 16:58: 8 2002 Delivered-To: cvs-all@freebsd.org Received: from mail.speakeasy.net (mail11.speakeasy.net [216.254.0.211]) by hub.freebsd.org (Postfix) with ESMTP id DA78E37B40A for ; Tue, 14 May 2002 16:57:56 -0700 (PDT) Received: (qmail 16100 invoked from network); 14 May 2002 23:57:56 -0000 Received: from unknown (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) by mail11.speakeasy.net (qmail-ldap-1.03) with DES-CBC3-SHA encrypted SMTP for ; 14 May 2002 23:57:56 -0000 Received: from laptop.baldwin.cx (laptop.baldwin.cx [192.168.0.4]) by server.baldwin.cx (8.11.6/8.11.6) with ESMTP id g4ENvtF62714; Tue, 14 May 2002 19:57:55 -0400 (EDT) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.5.2 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <200205121545.g4CFjTT12885@freefall.freebsd.org> Date: Tue, 14 May 2002 19:57:46 -0400 (EDT) From: John Baldwin To: Bruce Evans Subject: RE: cvs commit: src/sys/boot/i386/boot2 Makefile Cc: cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 12-May-2002 Bruce Evans wrote: > bde 2002/05/12 08:45:28 PDT > > Modified files: > sys/boot/i386/boot2 Makefile > Log: > Saved 176 bytes by compiling with -fno-guess-branch-probability. The > default of -fguess-branch-probablility causes time optimizations (?) > like rewriting `if (foo) x++;' as > `if (!foo) goto forth; back: ; ...; forth: x++; goto back;". This is > pessimizes space especially well on i386's because one short branch > gets converted to 2 long ones. Ah. Nice find. Thanks. -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message