From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
 id 34A1A3858034; Tue,  6 Apr 2021 06:53:59 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 34A1A3858034
From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/99905] [8/9/10/11 Regression] wrong code with -mno-mmx
 -mno-sse
Date: Tue, 06 Apr 2021 06:53:59 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: target
X-Bugzilla-Version: 11.0
X-Bugzilla-Keywords: wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: zsojka at seznam dot cz
X-Bugzilla-Status: NEW
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: short_desc
Message-ID: <bug-99905-4-yyaX4tNpAX@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-99905-4@http.gcc.gnu.org/bugzilla/>
References: <bug-99905-4@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-BeenThere: gcc-bugs@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc-bugs mailing list <gcc-bugs.gcc.gnu.org>
List-Unsubscribe: <https://gcc.gnu.org/mailman/options/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-request@gcc.gnu.org?subject=help>
List-Subscribe: <https://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Tue, 06 Apr 2021 06:53:59 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99905

Zdenek Sojka <zsojka at seznam dot cz> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|wrong code with             |[8/9/10/11 Regression]
                   |-mgeneral-regs-only         |wrong code with -mno-mmx
                   |                            |-mno-sse

--- Comment #3 from Zdenek Sojka <zsojka at seznam dot cz> ---
(In reply to Zdenek Sojka from comment #2)
> (In reply to Martin Li=C5=A1ka from comment #1)
> > > Probably present since -mgeneral-regs-only introduction.
> >=20
> > Confirmed that, it's since r7-928-gce3a16ff1f59e6db.
>=20
> Thank you for the bisection.
> If -mgeneral-regs-only is not used, the flag can be replaced by -mno-mmx
> -mno-sse:
>=20
> $ x86_64-pc-linux-gnu-gcc -Os -mno-mmx -mno-sse testcase.c
> $ ./a.out=20
> Aborted

... which seems a regression from gcc-6.5.0=