From patchwork Tue Aug 23 07:06:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "juzhe.zhong@rivai.ai" X-Patchwork-Id: 669 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:ecc5:0:0:0:0:0 with SMTP id s5csp824148wro; Tue, 23 Aug 2022 00:07:18 -0700 (PDT) X-Google-Smtp-Source: AA6agR5AhJQ//jetrax0954xZmLZRQJ7mvzq22op1rrgihS8dxvJzvJGxIxt5Hnt0qCUpyH5aUCM X-Received: by 2002:a17:907:a412:b0:731:6cc2:adfe with SMTP id sg18-20020a170907a41200b007316cc2adfemr15139310ejc.74.1661238438761; Tue, 23 Aug 2022 00:07:18 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1661238438; cv=none; d=google.com; s=arc-20160816; b=AzKRsPG8j9LSlU/1al1TfBEiTpu2Vud0a76QTKKCa6riN34rbB8R2DWeoxCvS6jVdj y4wvZ/TEdftjDaaFAPwWe1inHTNEjEBt4PISEHiO2S3DaqAWGzYajvFXFMctle8/VBon raSsQymUSZfsRFBMAKM54b8IXwgPrbomigXIoNa0AOKFYCe2diRS571G5om7R3see37C bGlDN1EL9A0ZI2hmevsPaSTFZIsDjB1vhAUUstLAlQ5SR55KFZYqFjcgPmDSMzlBATFM u+MNEG2qVo6P+kmLSvSde84EvhZtc/AaBve2mjRlcsrb1ibk7B3wvM9VbBmWxMuyPLw/ wuhw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:cc:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:feedback-id :content-transfer-encoding:mime-version:message-id:date:subject:to :from:dmarc-filter:delivered-to; bh=dP92hvbnnHY8BHcxvRaVEZfxxgDnlCEMpVDEDI0kFEU=; b=Q3X0xd8bPgOA1Xs+XUrAvu7tQz8nDzEX7JKlsL+PkffYXRFmp4QBR21o+Ek4rsSIUo 7ONRodX7kZ37gzfFNfsmgShtTOZ2v3aYcRP/Q6Ri899Mu+71sssOoHQfIhaP0ystUkHe fqHJWRSA1huH1AncE/FrFeUtSANnewp/8TAee3Z9jA5pwy/rx2CCPk9O87auBAcjqI77 ycpJ2WDPIe9ShXaqYb40jwrRqox6BfZ3yxEJx9rLOqWG+orEpZjIjeJg+QAAQkvmrYig PSDNOJfzc4SKaH4tWywEQakzVYr93h1k3vdMeizdBIg3DPVvsZc1XtoZJ2AYY6r6dE0d rFQA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 8.43.85.97 as permitted sender) smtp.mailfrom="gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org" Received: from sourceware.org (server2.sourceware.org. [8.43.85.97]) by mx.google.com with ESMTPS id wg6-20020a17090705c600b0072b4adf5c0fsi11425631ejb.77.2022.08.23.00.07.18 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Aug 2022 00:07:18 -0700 (PDT) Received-SPF: pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 8.43.85.97 as permitted sender) client-ip=8.43.85.97; Authentication-Results: mx.google.com; spf=pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 8.43.85.97 as permitted sender) smtp.mailfrom="gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org" Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 71955385736A for ; Tue, 23 Aug 2022 07:07:09 +0000 (GMT) X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from smtpbgjp3.qq.com (smtpbgjp3.qq.com [54.92.39.34]) by sourceware.org (Postfix) with ESMTPS id A16053857C41 for ; Tue, 23 Aug 2022 07:06:44 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org A16053857C41 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=rivai.ai Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=rivai.ai X-QQ-mid: bizesmtp63t1661238400t1j1g94w Received: from server1.localdomain ( [42.247.22.66]) by bizesmtp.qq.com (ESMTP) with id ; Tue, 23 Aug 2022 15:06:38 +0800 (CST) X-QQ-SSF: 01400000002000C0I000B00A0000000 X-QQ-FEAT: CR3LFp2JE4mSz06+SS1LxnGqEwMDH485gCzdKqh8aXMrQ9jkm+bdRJU1oWF8Y NVUH+gTPERASCaoSBF3ptr16swpbMaySbUvxMhsmaEvRlYLKM4NVRiyX+Hadj/l17T7UVaT xr+yp5bnfm7NM9ub4mFcdY53Z8i9jkP8DsegrAi7C8b5l91S9J8brKuDvY1/gukfSQsFZge hOYEMbDag6st+Efstzbj+Igce17NthL2JAEEZZ4tBJUX/TRoeeKdhgd7PsD6+rf88xwE4Gf L1rN2XPvJsiXzQcf/kbgJDFPqlAnMsJpkKoiGtS561NxSxphr4R0iaFuPybvYfyjSXjSN33 mdctY3UnwazWjvE5/zRj/+WXmBT19JVivTP6icf9CDIDVrciHsaPLfL+lpjeMAMX/FP5luH X-QQ-GoodBg: 2 From: juzhe.zhong@rivai.ai To: gcc-patches@gcc.gnu.org Subject: [PATCH] middle-end: Fix unexpected warnings for RISC-V port. Date: Tue, 23 Aug 2022 15:06:31 +0800 Message-Id: <20220823070631.154633-1-juzhe.zhong@rivai.ai> X-Mailer: git-send-email 2.36.1 MIME-Version: 1.0 X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtp:rivai.ai:qybglogicsvr:qybglogicsvr7 X-Spam-Status: No, score=-12.7 required=5.0 tests=BAYES_00, GIT_PATCH_0, KAM_DMARC_STATUS, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_PASS, 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: , Cc: rguenther@suse.de, zhongjuzhe Errors-To: gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org Sender: "Gcc-patches" X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1741934756820761702?= X-GMAIL-MSGID: =?utf-8?q?1741934756820761702?= From: zhongjuzhe 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)) {