From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20817 invoked by alias); 4 Aug 2010 19:53:03 -0000 Received: (qmail 19863 invoked by alias); 4 Aug 2010 19:52:25 -0000 Date: Wed, 04 Aug 2010 19:53:00 -0000 Message-ID: <20100804195225.19858.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug bootstrap/44970] [4.6 regression] Revision 162270 failed to bootstrap In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "dave at hiauly1 dot hia dot nrc dot ca" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2010-08/txt/msg00266.txt.bz2 ------- Comment #55 from dave at hiauly1 dot hia dot nrc dot ca 2010-08-04 19:52 ------- Subject: Re: [4.6 regression] Revision 162270 failed to bootstrap The exception is caused by get_bb_copy returning NULL. However, get_bb_copy is not miscompiled. The change to function.c changes various copies to extracts for zero/sign extension. These might cause a functional difference. For example, - copy %r26,%r23 + extrd,u %r26,63,32,%r23 It won't be easy to substitute functions in the .s file because there are a many label changes. Dave -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44970