From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11021 invoked by alias); 19 Sep 2010 21:58:40 -0000 Received: (qmail 10977 invoked by uid 48); 19 Sep 2010 21:58:30 -0000 Date: Sun, 19 Sep 2010 21:58:00 -0000 Message-ID: <20100919215830.10976.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug target/42775] [4.4 regression] GCC fails to rebuild itself with STAGE1_CFLAGS=-O1 In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "ebotcazou at gcc dot gnu dot org" 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: 2010-09/txt/msg02166.txt.bz2 ------- Comment #6 from ebotcazou at gcc dot gnu dot org 2010-09-19 21:58 ------- tree-ssa-operands.c:copy_virtual_operands is miscompiled by delay slot scheduling so the workaround is to use STAGE1_CFLAGS="-O1 -fno-delayed-branch". Another way out is probably to configure with --disable-stage1-checking. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42775