Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264709AbUDVVrJ (ORCPT ); Thu, 22 Apr 2004 17:47:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264694AbUDVVrJ (ORCPT ); Thu, 22 Apr 2004 17:47:09 -0400 Received: from mailwasher.lanl.gov ([192.16.0.25]:30810 "EHLO mailwasher-b.lanl.gov") by vger.kernel.org with ESMTP id S264709AbUDVVrE (ORCPT ); Thu, 22 Apr 2004 17:47:04 -0400 Subject: 2.6.6-rc2 addition warnings with gcc-3.4.0 and some timing results. From: Steven Cole To: linux-kernel@vger.kernel.org Content-Type: text/plain Message-Id: <1082670435.1324.106.camel@spc0.esa.lanl.gov> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.5-4mdk Date: Thu, 22 Apr 2004 15:47:15 -0600 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2012 Lines: 48 I built the current 2.6.6-rc2 tree recently pulled from bk://linus.bkbits.net/linux-2.5 using both gcc-3.3.2 as shipped with Mandrake 10, and with the recent release of gcc-3.4.0, which was built with all the defaults for an i686 system. The builds were performed in two separate directories, each made with bk export -tplain ../dirname. The times are for a make -j3 bzImage on a dual PIII 733 Mhz system. Make oldconfig was run first, using the same .config in each case. The running kernel was 2.6.6-rc2 built with gcc-3.4.0. Gcc-3.4.0 appears to be a little faster. The kernel builds were run several times. The time results were consistent. A few additional warnings were received with gcc-3.4.0. gcc-3.3.2 688.38user 52.69system 6:13.64elapsed 198%CPU $ size vmlinux text data bss dec hex filename 3064764 360496 176584 3601844 36f5b4 vmlinux gcc-3.4.0 599.56user 40.25system 5:23.11elapsed 198%CPU $ size vmlinux text data bss dec hex filename 3005436 359728 176552 3541716 360ad4 vmlinux Warnings only with gcc-3.4.0: CC arch/i386/pci/pcbios.o arch/i386/pci/pcbios.c: In function `pcibios_get_irq_routing_table': arch/i386/pci/pcbios.c:424: warning: read-write constraint does not allow a register arch/i386/pci/pcbios.c:424: warning: read-write constraint does not allow a register CC fs/xfs/xfs_iget.o include/asm/rwsem.h: In function `xfs_ilock_nowait': include/asm/rwsem.h:126: warning: read-write constraint does not allow a register include/asm/rwsem.h:126: warning: read-write constraint does not allow a register include/asm/rwsem.h:126: warning: read-write constraint does not allow a register include/asm/rwsem.h:126: warning: read-write constraint does not allow a register Steven - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/