From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by sourceware.org (Postfix) with ESMTPS id 8B8D33858424 for ; Tue, 23 Aug 2022 07:07:24 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 8B8D33858424 Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 1428B20146; Tue, 23 Aug 2022 07:07:23 +0000 (UTC) Received: from wotan.suse.de (wotan.suse.de [10.160.0.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by relay2.suse.de (Postfix) with ESMTPS id 0D7732C141; Tue, 23 Aug 2022 07:07:22 +0000 (UTC) Date: Tue, 23 Aug 2022 07:07:22 +0000 (UTC) From: Richard Biener To: zhongjuzhe cc: gcc-patches@gcc.gnu.org Subject: Re: [PATCH] middle-end: Fix unexpected warnings for RISC-V port. In-Reply-To: <20220823070631.154633-1-juzhe.zhong@rivai.ai> Message-ID: References: <20220823070631.154633-1-juzhe.zhong@rivai.ai> User-Agent: Alpine 2.22 (LSU 394 2020-01-19) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Spam-Status: No, score=-11.0 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 Aug 2022 07:07:25 -0000 On Tue, 23 Aug 2022, juzhe.zhong@rivai.ai wrote: > From: zhongjuzhe OK. > gcc/ChangeLog: > > * tree-vect-loop-manip.cc (vect_gen_vector_loop_niters): Simply initialize const_vf to 0. > > --- > gcc/tree-vect-loop-manip.cc | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/gcc/tree-vect-loop-manip.cc b/gcc/tree-vect-loop-manip.cc > index 86d2264054a..c3a24e6c39a 100644 > --- a/gcc/tree-vect-loop-manip.cc > +++ b/gcc/tree-vect-loop-manip.cc > @@ -1977,8 +1977,9 @@ vect_gen_vector_loop_niters (loop_vec_info loop_vinfo, tree niters, > } > else > ni_minus_gap = niters; > - > - unsigned HOST_WIDE_INT const_vf; > + > + /* To silence some unexpected warnings, simply initialize to 0. */ > + unsigned HOST_WIDE_INT const_vf = 0; > if (vf.is_constant (&const_vf) > && !LOOP_VINFO_USING_PARTIAL_VECTORS_P (loop_vinfo)) > { > -- Richard Biener SUSE Software Solutions Germany GmbH, Frankenstrasse 146, 90461 Nuernberg, Germany; GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman; HRB 36809 (AG Nuernberg)