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 09FC0383F86A; Thu, 11 Feb 2021 16:19:14 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 09FC0383F86A
From: "seurer at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/96264] [10/11 Regression] wrong code with -Os
 -fno-forward-propagate -fschedule-insns -fno-tree-ter
Date: Thu, 11 Feb 2021 16:19:13 +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: 11.0
X-Bugzilla-Keywords: wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: seurer at gcc dot gnu.org
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 10.3
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-96264-4-mjSP5JdZOp@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-96264-4@http.gcc.gnu.org/bugzilla/>
References: <bug-96264-4@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: Thu, 11 Feb 2021 16:19:14 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96264

--- Comment #8 from seurer at gcc dot gnu.org ---
Enabling -fno-forward-propagate triggers the problem.

seurer@genoa:~/gcc/git/build/gcc-10-test$ whichgcc
Now at commit g:a7eb97ad269b6509bd7b31ca373daea98e4d7e85, r10-135=20


seurer@genoa:~/gcc/git/build/gcc-10-test$ ~/gcc/git/install/gcc-10-test/bin=
/gcc
-Os -fno-forward-propagate -fschedule-insns -fno-tree-ter t1.c -static
seurer@genoa:~/gcc/git/build/gcc-10-test$ ./a.out
Aborted (core dumped)
seurer@genoa:~/gcc/git/build/gcc-10-test$


seurer@genoa:~/gcc/git/build/gcc-10-test$ ~/gcc/git/install/gcc-10-test/bin=
/gcc
-Os -fschedule-insns -fno-tree-ter t1.c -static
seurer@genoa:~/gcc/git/build/gcc-10-test$ ./a.out
seurer@genoa:~/gcc/git/build/gcc-10-test$=