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 CB87C3858D39; Mon, 27 Mar 2023 09:18:08 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org CB87C3858D39
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1679908688;
	bh=q7abavLF7RjjKqSo09MEOs9zSa0MqT+/O6V2CeYbG30=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=lIqJQXXbq5QTAXO0gOqVSU3fszJUnzI2VbN9OWy17jJXsjQrKf3Zi6JoAij6SoeXJ
	 KSzljy1zV798jji/2AOXi6bnXgS6FYX+2/fZjdm66FTsAY28wjaz/XIfZdh/Fdiwb6
	 58bh94zQpnZBWgGs1j9SM4XGhoYw/jp7gFnEf5nM=
From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/109048] [13 regression] redundant mask
 compare generated by vectorizer.
Date: Mon, 27 Mar 2023 09:18:07 +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: rguenth 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: 13.0
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: attachments.created
Message-ID: <bug-109048-4-MuVpBHl273@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-109048-4@http.gcc.gnu.org/bugzilla/>
References: <bug-109048-4@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=3D109048

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 54762
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D54762&action=3Dedit
heuristic

I am testing this heuristic=