From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ej1-x629.google.com (mail-ej1-x629.google.com [IPv6:2a00:1450:4864:20::629]) by sourceware.org (Postfix) with ESMTPS id DB7273854554 for ; Wed, 23 Nov 2022 01:54:28 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org DB7273854554 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-ej1-x629.google.com with SMTP id ft34so39596748ejc.12 for ; Tue, 22 Nov 2022 17:54:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=OWEoAEdWjSQ7S4ol2Nv6IHhG5kZ+h23f9Ks2D+Q8slI=; b=NlZlxZjVDvJiYL0NGb+quRcBeEVhK0RvBBqLeIrwhZHkzZNh9jG74LrGiKenfnSnJn tu405AWj62aT8Yz2rOPnaSBEa4Sf1s2QP89WT8S+2LtCceMWcpkde+ksgZVMhaJL3e7w OYFg6PfqWVrrVCW+PGswpGhKagsx8+eLcDylhrKD/rsXJXJIAjRTSRx42TiMbLMIaAdT BpIXI0Y1j5DwNGgQf689v/5QUr1Hr5Fuyud1Rp378ZVG4QvW8uZOaG35jZoAXiIIFeaX v/pkwGMJlr9907QFKM5flF42oGUtEJs1laglPnxkgLKBv+E5dYYjfuyLyCFMbmi4H/W3 QH0Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=OWEoAEdWjSQ7S4ol2Nv6IHhG5kZ+h23f9Ks2D+Q8slI=; b=o7kc+QANKAigPB6Ke863NPxZUoR6gee3c53STNC/4PZmhLtWLMY2Gj+oN696KOkMWA 6XbBzWSSg7WErm5wk5T8j/R3U5nSEWOLXDWmNd4iT75Hbd96T8m4t2wKYuncs4af9Lt0 fa6AIfVVV521Lp1Sl2LzxvrRyghxp5eY6BhenKdGXS2tweza2hYWCs6uvjB3TAZ9CsUt pfRIXTaxXKT/6zEwokBKGgkT/72BuldAPE80sAPupO4aKuhD1x33fz7WR/SgMxEKNVAQ MrCah/0v6yl5VgAPvVa9WW+yG3RxmYJMbLuUGHoDVZ4J5pTg1vWijsxpk6uppFxkZJ9r 34pw== X-Gm-Message-State: ANoB5pkx2QMQrh0oHc6FUVF6vUSqm6d7yJaz92CTfqGwSujeQxqmRc83 SqYmcKcN+0osqe/wcTSJ6L9SKRuMZaxufh9YDYg= X-Google-Smtp-Source: AA0mqf7YQti5mNdjGo0jZKBrhTckzN9mTM/d/+rhVI/3lyRClLbMSmborqIk8c2Whgw6mHNXij0jlg2vagXzFZXNAgI= X-Received: by 2002:a17:906:b88b:b0:7b5:8550:92ee with SMTP id hb11-20020a170906b88b00b007b5855092eemr12141159ejb.382.1669168467248; Tue, 22 Nov 2022 17:54:27 -0800 (PST) MIME-Version: 1.0 References: <20221119062532.75190-1-hongyu.wang@intel.com> <72ce55ba-2cda-6185-b89a-6d30ea95a383@gmail.com> In-Reply-To: <72ce55ba-2cda-6185-b89a-6d30ea95a383@gmail.com> From: Hongyu Wang Date: Wed, 23 Nov 2022 09:54:15 +0800 Message-ID: Subject: Re: [PATCH] i386: Only enable small loop unrolling in backend [PR 107602] To: Jeff Law Cc: Hongyu Wang , gcc-patches@gcc.gnu.org, richard.guenther@gmail.com, ubizjak@gmail.com, hongtao.liu@intel.com Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,KAM_SHORT,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: Hi Jeff, > The reversion of the loop-init.cc changes is fine. The x86 maintainers > will need to chime in on the rest. Consider installing the loop-init.cc > reversion immediately as the current state has regressed s390 and > potentially other targets. I've posted a patch in https://gcc.gnu.org/pipermail/gcc-patches/2022-November/606478.html to change the rs6000 target and there is a discussion ongoing. If we draw a conclusion that we only want to make changes in the backend, I will install this one. -- Regards, Hongyu, Wang