From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7172 invoked by alias); 29 Jan 2003 01:26:01 -0000 Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-prs-owner@gcc.gnu.org Received: (qmail 7146 invoked by uid 71); 29 Jan 2003 01:26:01 -0000 Date: Wed, 29 Jan 2003 01:26:00 -0000 Message-ID: <20030129012601.7141.qmail@sources.redhat.com> To: ebotcazou@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, From: Gabriel Dos_Reis Subject: Re: optimization/9279: [3.2 regression] [Sparc] combine bug Reply-To: Gabriel Dos_Reis X-SW-Source: 2003-01/txt/msg01650.txt.bz2 List-Id: The following reply was made to PR optimization/9279; it has been noted by GNATS. From: Gabriel Dos_Reis To: "Christian Ehrhardt" Cc: Matthias Klose , Eric Botcazou , ebotcazou@gcc.gnu.org, frank@g-n-u.de, gcc-bugs@gcc.gnu.org, gcc-gnats@gcc.gnu.org Subject: Re: optimization/9279: [3.2 regression] [Sparc] combine bug Date: Wed, 29 Jan 2003 02:25:50 +0100 (MET) | > (2) possibly a wrong code generation -- David gave some | > references. | | I must have missed this discussion, Could you give me a pointer? Sorry, that is part of e-mail exhancge I had with Eric Dadid yesterday. Quoting him: This patch and the necessary PowerPC patch exposed other bugs in the compiler regarding REG_EQUAL notes in loop unrolling: 2002-10-04 David Edelsohn * unroll.c (copy_loop_body): Remove REG_EQUAL note attached to copied instruction if the note is not loop invariant. The patches may have other co-dependencies we do not know about. Eric agreed with him. I would like to avoid last time minute patch chasing. -- Gaby