From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 12108 invoked by alias); 15 Apr 2012 09:24:54 -0000 Received: (qmail 12099 invoked by uid 22791); 15 Apr 2012 09:24:53 -0000 X-SWARE-Spam-Status: No, hits=-5.8 required=5.0 tests=AWL,BAYES_00,KHOP_PGP_SIGNED,KHOP_THREADED,SPF_HELO_PASS,TW_AV,TW_WX,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from plane.gmane.org (HELO plane.gmane.org) (80.91.229.3) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sun, 15 Apr 2012 09:24:39 +0000 Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1SJLhG-0004GD-EL for gcc@gcc.gnu.org; Sun, 15 Apr 2012 11:24:38 +0200 Received: from 71-17-69-121.yktn.hsdb.sasknet.sk.ca ([71.17.69.121]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 15 Apr 2012 11:24:38 +0200 Received: from dirtyepic by 71-17-69-121.yktn.hsdb.sasknet.sk.ca with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 15 Apr 2012 11:24:38 +0200 To: gcc@gcc.gnu.org From: Ryan Hill Subject: Re: gcc 4.7: -march=corei7-avx bug? Date: Sun, 15 Apr 2012 09:24:00 -0000 Message-ID: <20120415033320.6b599c2e@gentoo.org> References: Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/5I4p8A2CeOTJdXgCQIhfVOz"; protocol="application/pgp-signature" X-IsSubscribed: yes Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-owner@gcc.gnu.org X-SW-Source: 2012-04/txt/msg00651.txt.bz2 --Sig_/5I4p8A2CeOTJdXgCQIhfVOz Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-length: 671 On Thu, 29 Mar 2012 04:53:45 -0300 D=E2niel Fraga wrote: > I tried to compile Firefox 11 with gcc 4.7 optimized with: >=20 > -O3 -march=3Dcorei7-avx (I have a core i7 2700k) >=20 > But Firefox segfaults (backtrace provided, although it seems > not very useful): >=20 > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D52762 >=20 > If I compile with -march=3Dcorei7 it runs perfectly. >=20 > Maybe a gcc bug? >=20 > How can I help you to debug this? We've had to disable -mavx for firefox builds due to numerous issues like this. Search the mozilla bugzilla for stack alignment issues. --=20 fonts, gcc-porting toolchain, wxwidgets @ gentoo.org --Sig_/5I4p8A2CeOTJdXgCQIhfVOz Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc Content-length: 198 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iEYEARECAAYFAk+KleAACgkQiqiDRvmkBmLoOwCeMz3AeEfU165LFtKDbVHI+2nE C5sAoIb+WoQ4L3xSJeRraov/hSe6/+L/ =6LLU -----END PGP SIGNATURE----- --Sig_/5I4p8A2CeOTJdXgCQIhfVOz--