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 CBE99385843E; Fri,  5 Aug 2022 10:12:07 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org CBE99385843E
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/106533] loop distribution not distributing
 inner loop (to memcpy) when perfect loop nest
Date: Fri, 05 Aug 2022 10:12:07 +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: 13.0
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: normal
X-Bugzilla-Who: cvs-commit at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-106533-4-zkPnBKYdRU@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-106533-4@http.gcc.gnu.org/bugzilla/>
References: <bug-106533-4@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, 05 Aug 2022 10:12:07 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106533

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:36bc2a8f24f9c8f6eb2c579d520d7fc73a113ae1

commit r13-1972-g36bc2a8f24f9c8f6eb2c579d520d7fc73a113ae1
Author: Richard Biener <rguenther@suse.de>
Date:   Fri Aug 5 10:40:18 2022 +0200

    tree-optimization/106533 - loop distribution of inner loop of nest

    Loop distribution currently gives up if the outer loop of a loop
    nest it analyzes contains a stmt with side-effects instead of
    continuing to analyze the innermost loop.  The following fixes that
    by continuing anyway.

            PR tree-optimization/106533
            * tree-loop-distribution.cc (loop_distribution::execute): Conti=
nue
            analyzing the inner loops when find_seed_stmts_for_distribution
            fails.

            * gcc.dg/tree-ssa/ldist-39.c: New testcase.=