From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 9286 invoked by alias); 15 Jul 2012 22:52:55 -0000 Received: (qmail 9277 invoked by uid 22791); 15 Jul 2012 22:52:54 -0000 X-SWARE-Spam-Status: No, hits=-4.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED 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; Sun, 15 Jul 2012 22:52:32 +0000 From: "steven at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/53975] [ia64] Target register of a speculative load moved to a branch register prior to the chk.s instruction Date: Sun, 15 Jul 2012 22:52:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: steven at gcc dot gnu.org X-Bugzilla-Status: WAITING X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- 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: 2012-07/txt/msg01191.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53975 --- Comment #4 from Steven Bosscher 2012-07-15 22:52:31 UTC --- Ah, of course the "move branch register" instruction faults if the NaT bit of the source register is set. So the recovery code is irrelevant, and this could be a GCC bug. Need a test case to investigate, though...