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 46A7A385781A; Wed, 17 Mar 2021 11:14:11 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 46A7A385781A
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/96370] [8 Regression] ICE with -ffast-math
 since r7-950-g8a85cee26eabf5cf
Date: Wed, 17 Mar 2021 11:14:11 +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: 11.0
X-Bugzilla-Keywords: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: cvs-commit at gcc dot gnu.org
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: 8.5
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-96370-4-6TDpbZWlZR@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-96370-4@http.gcc.gnu.org/bugzilla/>
References: <bug-96370-4@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: Wed, 17 Mar 2021 11:14:11 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96370

--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-8 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:0307275acc789491bcc33dc67948009ec7d9c51d

commit r8-10804-g0307275acc789491bcc33dc67948009ec7d9c51d
Author: Richard Biener <rguenther@suse.de>
Date:   Thu Jul 30 10:24:42 2020 +0200

    tree-optimization/96370 - make reassoc expr rewrite more robust

    In the face of the more complex tricks in reassoc with respect
    to negate processing it can happen that the expression rewrite
    is fooled to recurse on a leaf and pick up a bogus expression
    code.  The following patch makes the expression rewrite more
    robust in providing the expression code to it directly since
    it is the same for all operations in a chain.

    2020-07-30  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/96370
            * tree-ssa-reassoc.c (rewrite_expr_tree): Add operation
            code parameter and use it instead of picking it up from
            the stmt that is being rewritten.
            (reassociate_bb): Pass down the operation code.

            * gcc.dg/pr96370.c: New testcase.

    (cherry picked from commit a5fff78405c3bfea287434e7711c6f10a770cb0a)=