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 511B4384BC12; Thu, 16 Apr 2020 14:44:17 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 511B4384BC12
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
 s=default; t=1587048257;
 bh=GEZPixDrJydI9SK3Bb2bcyDCoiEBT6blQvyDTqIkCRU=;
 h=From:To:Subject:Date:In-Reply-To:References:From;
 b=j2jJZVkGJheZOkaQzcCP96NG5zl0l3iDFF+6YiR7fUW8fiFUBgtm3HSBZmNXCTNqM
 rx0u6fqQJ73AH7o0SSLt0nJ/6385c8f5Z1fcQZrT+V94jNu6SHwv0hPVYyQxveQdnY
 vK5VUhmI/GomXTZQiVi5unA91Wm4v7m95A7JLF/4=
From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/94618] [8/9/10 Regression] '-fcompare-debug'
 failure (length) with -O2 -fnon-call-exceptions since
 r8-565-g7581ce9a1ad6df9c
Date: Thu, 16 Apr 2020 14:44:17 +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: 10.0
X-Bugzilla-Keywords: ra
X-Bugzilla-Severity: normal
X-Bugzilla-Who: jakub at gcc dot gnu.org
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: 8.5
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-94618-4-HOoznIAedI@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-94618-4@http.gcc.gnu.org/bugzilla/>
References: <bug-94618-4@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: <http://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: <http://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Thu, 16 Apr 2020 14:44:17 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94618

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think the difference is much earlier, in cse_local dump there is (with
additional --param=3Dmin-nondebug-insn-uid=3D10000):
 deferring deletion of insn with uid =3D 10060.
-deferring deletion of insn with uid =3D 10059.
-Deleted 2 trivially dead insns
+Deleted 1 trivially dead insns
where the RA then removes the trivially dead insn when cse_local didn't.=