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 9CE6E3A53017; Fri,  6 Nov 2020 09:52:05 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9CE6E3A53017
From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/97623] [9/10/11 Regression] Extremely slow O2
 compile (>>O(n^2))
Date: Fri, 06 Nov 2020 09:52:05 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 9.3.1
X-Bugzilla-Keywords: compile-time-hog
X-Bugzilla-Severity: normal
X-Bugzilla-Who: rguenther at suse dot de
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 9.4
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-97623-4-SAphsfGJlQ@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-97623-4@http.gcc.gnu.org/bugzilla/>
References: <bug-97623-4@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: Fri, 06 Nov 2020 09:52:05 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97623

--- Comment #11 from rguenther at suse dot de <rguenther at suse dot de> ---
On Fri, 6 Nov 2020, wsnyder at wsnyder dot org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97623
>=20
> --- Comment #10 from Wilson Snyder <wsnyder at wsnyder dot org> ---
> Running -O2 -fno-code-hoisting -ftime-report
>=20
> and I deleted the 0%/0%/0% lines:
>=20
> Time variable                                   usr           sys        =
  wall
>               GGC
>  tree PRE                           :  36.36 ( 95%)   0.05 ( 19%)  36.34 =
( 94%)
>   32604 kB ( 20%)

OK, that's still all PRE :/  Can you share the full testcase somehow?=