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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/67124] [6 Regression] wrong code at -O1, -O2 and -O3 on x86_64-linux-gnu Date: Thu, 06 Aug 2015 21:53:00 -0000 [thread overview] Message-ID: <bug-67124-4-hZELmylbKK@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-67124-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67124 Uroš Bizjak <ubizjak at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |ra CC| |vmakarov at gcc dot gnu.org Component|middle-end |rtl-optimization --- Comment #7 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to rsandifo@gcc.gnu.org from comment #6) > The expand code looks OK to me. Assigning to one DImode word > of a TImode isn't supposed to change the other half. > > I think the problem is in LRA. It tries to reload the low half > of the TImode as follows: Thanks for your analysis! Reconfirmed as RA problem, adding another CC. >From gcc-bugs-return-494329-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 06 22:40:26 2015 Return-Path: <gcc-bugs-return-494329-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org> Delivered-To: listarch-gcc-bugs@gcc.gnu.org Received: (qmail 99378 invoked by alias); 6 Aug 2015 22:40:26 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: <gcc-bugs.gcc.gnu.org> List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/> List-Post: <mailto:gcc-bugs@gcc.gnu.org> List-Help: <mailto:gcc-bugs-help@gcc.gnu.org> Sender: gcc-bugs-owner@gcc.gnu.org Delivered-To: mailing list gcc-bugs@gcc.gnu.org Received: (qmail 99325 invoked by uid 48); 6 Aug 2015 22:40:22 -0000 From: "kargl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/67140] undefined reference to _gfortran_mvbits_i16 Date: Thu, 06 Aug 2015 22:40:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: fortran X-Bugzilla-Version: 4.8.4 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: kargl at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P4 X-Bugzilla-Assigned-To: kargl at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: priority bug_status cf_reconfirmed_on cc assigned_to everconfirmed cf_known_to_fail Message-ID: <bug-67140-4-oC8fSN3icM@http.gcc.gnu.org/bugzilla/> In-Reply-To: <bug-67140-4@http.gcc.gnu.org/bugzilla/> References: <bug-67140-4@http.gcc.gnu.org/bugzilla/> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-08/txt/msg00471.txt.bz2 Content-length: 841 https://gcc.gnu.org/bugzilla/show_bug.cgi?idg140 kargl at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 |P4 Status|UNCONFIRMED |NEW Last reconfirmed| |2015-08-06 CC| |kargl at gcc dot gnu.org Assignee|unassigned at gcc dot gnu.org |kargl at gcc dot gnu.org Ever confirmed|0 |1 Known to fail| |4.8.5, 4.9.4, 5.2.1, 6.0 --- Comment #1 from kargl at gcc dot gnu.org --- I have a patch. Don't know if it actaully works as your test program has no output and no indication of the expected result.
next prev parent reply other threads:[~2015-08-06 21:53 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-08-05 9:07 [Bug rtl-optimization/67124] New: " su at cs dot ucdavis.edu 2015-08-05 9:15 ` [Bug rtl-optimization/67124] [6 Regression] " mpolacek at gcc dot gnu.org 2015-08-05 11:07 ` [Bug target/67124] " rguenth at gcc dot gnu.org 2015-08-05 13:10 ` mpolacek at gcc dot gnu.org 2015-08-06 21:53 ` ubizjak at gmail dot com [this message] 2015-10-08 8:46 ` ubizjak at gmail dot com 2015-10-08 11:04 ` [Bug rtl-optimization/67124] " rguenth at gcc dot gnu.org 2015-10-08 13:41 ` ubizjak at gmail dot com
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