[Bug rtl-optimization/66626] [4.9/5/6 Regression] gcc.dg/torture/stackalign/non-local-goto-5.c segfaults w/ -mregparm=3 or -miamcu

["ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66626

--- Comment #21 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to H.J. Lu from comment #20)
> Testcase in comment #1 still fails with r225789.

Please note comment #3, where I recalled the testcase from Comment #2:

>> A better testcase:
>
> Nope. This one works OK. The testcase from Comment #1 fails.

Sorry for the confusion...
>From gcc-bugs-return-492308-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jul 15 08:41:41 2015
Return-Path: <gcc-bugs-return-492308-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Delivered-To: listarch-gcc-bugs@gcc.gnu.org
Received: (qmail 7598 invoked by alias); 15 Jul 2015 08:41:41 -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 7542 invoked by uid 48); 15 Jul 2015 08:41:37 -0000
From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/66838] Calling multiple SYSV AMD64 ABI functions from MS x64 ABI one results in clobbered parameters
Date: Wed, 15 Jul 2015 08:41:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: rtl-optimization
X-Bugzilla-Version: 5.1.1
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: ubizjak at gmail dot com
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution:
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: ubizjak at gmail dot com
X-Bugzilla-Target-Milestone: 5.2
X-Bugzilla-Flags:
X-Bugzilla-Changed-Fields:
Message-ID: <bug-66838-4-i45rMkNTip@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-66838-4@http.gcc.gnu.org/bugzilla/>
References: <bug-66838-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-SW-Source: 2015-07/txt/msg01198.txt.bz2
Content-length: 174

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66838

--- Comment #5 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed for mainline, needs backport to gcc-5 branch.
>From gcc-bugs-return-492309-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jul 15 09:02:20 2015
Return-Path: <gcc-bugs-return-492309-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Delivered-To: listarch-gcc-bugs@gcc.gnu.org
Received: (qmail 27602 invoked by alias); 15 Jul 2015 09:02:20 -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 27560 invoked by uid 48); 15 Jul 2015 09:02:16 -0000
From: "sebastian.huber@embedded-brains.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/66854] libgcc2.c:1846:9: internal compiler error: Segmentation fault
Date: Wed, 15 Jul 2015 09:02:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: libgcc
X-Bugzilla-Version: 6.0
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: sebastian.huber@embedded-brains.de
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution:
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags:
X-Bugzilla-Changed-Fields:
Message-ID: <bug-66854-4-qMrLzvBO6y@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-66854-4@http.gcc.gnu.org/bugzilla/>
References: <bug-66854-4@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: 2015-07/txt/msg01199.txt.bz2
Content-length: 1045

https://gcc.gnu.org/bugzilla/show_bug.cgi?idf854

--- Comment #4 from Sebastian Huber <sebastian.huber@embedded-brains.de> ---
(In reply to Michael Meissner from comment #3)
> Created attachment 35978 [details]
> Proposed patch to fix the problem
>
> I believe this patch fixes the problem.  I was able to build libgcc with
> this patch installed.  I could not complete a full RTEMS build (I suspect I
> am missing some parts of the software).

Thanks for the quick fix.  With your patch I can build without errors.

To build the powerpc-rtems target you need a link to the latest Newlib in your
GCC directory, e.g. newlib -> ../newlib-git/newlib.

I used the following configure options:

../gcc-git/configure --prefix=/opt/rtems-4.11 --target=powerpc-rtems4.11
--verbose --with-gnu-as --with-gnu-ld --with-newlib --disable-libstdcxx-pch
--disable-nls --disable-lto --disable-plugin --without-included-gettext
--enable-version-specific-runtime-libs --enable-threads
--enable-newlib-io-c99-formats --enable-libgomp --enable-languages=c,c++