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 EFC7C3952520; Tue, 11 Oct 2022 00:10:51 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org EFC7C3952520
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1665447051;
	bh=NhIvnN+btTId7qoN/ndHPuEDJk82fxL1pb/29ztzXac=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=ZsP2oWcMN/AE3wf8n1TKupPNJJyEpd+hAMzGTWdoj67dB2hpp2f09c+28JQlNHc+T
	 uoU2KdBzIASzF72/Y3NawGVDioE45tSEMbJW9bppxL0oa+YVrYlCmi2tQzuOa9CjYz
	 0ceWLteUr6nrzbFK1d2dAFnbLuTdZc0e9RiwaIGc=
From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/107172] [13 Regression] wrong code with "-O1 -ftree-vrp"
 on x86_64-linux-gnu since r13-1268-g8c99e307b20c502e
Date: Tue, 11 Oct 2022 00:10:51 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: target
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: hjl.tools at gmail dot com
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P1
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 13.0
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-107172-4-3229va9ArD@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-107172-4@http.gcc.gnu.org/bugzilla/>
References: <bug-107172-4@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=3D107172

--- Comment #11 from H.J. Lu <hjl.tools at gmail dot com> ---
Assuming (reg:CCC 17 flags) is set to 1 by compare properly, how should

(insn 50 49 51 2 (parallel [
            (set (reg:SI 93)
                (neg:SI (ltu:SI (reg:CCC 17 flags)
                        (const_int 0 [0]))))
            (clobber (reg:CC 17 flags))
        ]) "107172.c":4:10 1258 {*x86_movsicc_0_m1_neg}
     (expr_list:REG_DEAD (reg:CCC 17 flags)
        (expr_list:REG_UNUSED (reg:CC 17 flags)
            (nil))))

work?=