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 01CA43858426; Mon, 13 Feb 2023 07:27:07 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 01CA43858426
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1676273227;
	bh=j288pnZ0LAlzKLqox4SZ0kOluxaVoiL9e2T8foCS93g=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=hYPMDFvafc0Wm2HcPHl99s/rWfsr6QSCUMQTOqZWh6wubETQMG0uA//yVLh6f1LQ5
	 sFXzUSVOCrhxLdqjeFVeQ/7+D3F0N8MPp1BTVnjNT0dB9ZNnnAs7p0xGqSPTSB/oEY
	 wnejDy1jN5F00OJ7mPe83J+j4EEqWhrd/w6G/h5E=
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/106722] bogus uninit warning in
 tree-vect-loop-manip.cc
Date: Mon, 13 Feb 2023 07:27:05 +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: 13.0
X-Bugzilla-Keywords: diagnostic
X-Bugzilla-Severity: normal
X-Bugzilla-Who: cvs-commit 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: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-106722-4-2Djc0Cgxyr@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-106722-4@http.gcc.gnu.org/bugzilla/>
References: <bug-106722-4@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
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106722

--- Comment #8 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:338739645b8e5bf34636d8d4829d7650001ad08c

commit r13-5958-g338739645b8e5bf34636d8d4829d7650001ad08c
Author: Richard Biener <rguenther@suse.de>
Date:   Fri Feb 10 10:28:29 2023 +0100

    tree-optimization/106722 - fix CD-DCE edge marking

    The following fixes a latent issue when we mark control edges but
    end up with marking a block with no stmts necessary.  In this case
    we fail to mark dependent control edges of that block.

            PR tree-optimization/106722
            * tree-ssa-dce.cc (mark_last_stmt_necessary): Return
            whether we marked a stmt.
            (mark_control_dependent_edges_necessary): When
            mark_last_stmt_necessary didn't mark any stmt make sure
            to mark its control dependent edges.
            (propagate_necessity): Likewise.

            * gcc.dg/torture/pr108737.c: New testcase.=