From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 13492 invoked by alias); 28 Feb 2012 15:41:35 -0000 Received: (qmail 13380 invoked by uid 22791); 28 Feb 2012 15:41:32 -0000 X-SWARE-Spam-Status: No, hits=-2.8 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Tue, 28 Feb 2012 15:41:18 +0000 From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug bootstrap/52397] [4.7 regression] comparison failure with Ada enabled Date: Tue, 28 Feb 2012 15:48:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: bootstrap X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jakub at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P4 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.7.0 X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 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: 2012-02/txt/msg02714.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52397 --- Comment #7 from Jakub Jelinek 2012-02-28 15:40:40 UTC --- Ok, with additional -fno-inline -gnatpg I can reproduce even with the commands I tried. The dead_debug* stuff doesn't handle this probably because the hard reg isn't ever becoming REG_DEAD or REG_UNUSED etc. in the IL, it is just unused altogether plus set on entry. I wonder if df_reg_chain_unlink/df_install_ref shouldn't just ignore DEBUG_INSN refs when updating df->hard_regs_live_count array, do we care at all when testing regs_ever_live if something is live in debug insns?