From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 27587 invoked by alias); 2 Dec 2011 12:15:18 -0000 Received: (qmail 27559 invoked by uid 22791); 2 Dec 2011 12:15:17 -0000 X-SWARE-Spam-Status: No, hits=-2.9 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; Fri, 02 Dec 2011 12:15:04 +0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug lto/47259] [4.7 Regression] LTO and global register variable Date: Fri, 02 Dec 2011 12:15:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: lto X-Bugzilla-Keywords: lto X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: REOPENED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.7.0 X-Bugzilla-Changed-Fields: CC 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: 2011-12/txt/msg00154.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47259 Richard Guenther changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |hubicka at gcc dot gnu.org --- Comment #11 from Richard Guenther 2011-12-02 12:14:29 UTC --- This must be a new bug, the testcase passed previously, the register name (esi) is rejected at link-time only. #1 0x0000000000d4dbba in make_decl_rtl (decl=0x7ffff5a2c140) at /space/rguenther/src/svn/trunk/gcc/varasm.c:1207 1207 error ("invalid register name for %q+D", decl); (gdb) l 1202 reg_number = decode_reg_name (asmspec); 1203 /* First detect errors in declaring global registers. */ 1204 if (reg_number == -1) 1205 error ("register name not specified for %q+D", decl); 1206 else if (reg_number < 0) 1207 error ("invalid register name for %q+D", decl); (gdb) p asmspec $2 = 0x7ffff5b58401 "esi.2318" we mangle the register name now. That's of course bogus. It seems we put the global register vars into the alias machinery now? Honza?