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 6B88E3858D33; Thu, 19 Oct 2023 02:26:56 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 6B88E3858D33
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1697682416;
	bh=9bedVZLmEhZ/+NjYX11su0mb6OUgydwEXRtMwEGvKI0=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=dRqL1rpB/Hf+fgrdjgHu+gMiZTnpqiWHrMgMpkI8aSR4EbjPjORaFLGjSf77Elwz1
	 cZujqdyEgP0/hWR9EYZEtGD+vMRNzgc8dQI/5as9IPVg2qBbL3adFh/BBgM/xY1s4I
	 vQ8+7LSRSgNI9j4zYxan5PIT38HgbyhXKsCK8zdg=
From: "juzhe.zhong at rivai dot ai" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/111791] RISC-V: Strange loop vectorizaion on
 popcount function
Date: Thu, 19 Oct 2023 02:26:55 +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: 14.0
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: normal
X-Bugzilla-Who: juzhe.zhong at rivai dot ai
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-111791-4-tKmHnk2Hr3@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-111791-4@http.gcc.gnu.org/bugzilla/>
References: <bug-111791-4@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=3D111791

--- Comment #7 from JuzheZhong <juzhe.zhong at rivai dot ai> ---
I don't think this is popcount vectorization issue.

This code should not be vectorized. It's true this code won' be vectorized =
if
we
use default COST model.

So this is not an issue.=