From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by sourceware.org (Postfix) with ESMTPS id 88930385B1BB for ; Thu, 15 Dec 2022 07:39:34 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 88930385B1BB Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1671089974; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:in-reply-to:in-reply-to: references:references; bh=/B+Gzcx2uGSGevLDnlgCKDeCXGoZz+lJCyWR3BXCUWw=; b=Y/wquqxDoRQIfU68bFJrWd2cJlidSLC9nm+DcQK+EtpSEXnPZ0p5N0iMYmSQ9MbULRyLcp uIyAqFtp/ZC0caExzE01GERwXyHjKg8zcLDX9vk5q/6Gr1sf1Y72oWIoppcdE65HSKLwdU jsQykMPorx4P8JiQaj09bLtf5IH0qaA= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-339-inr_tJtqNJ-yQ6R1IDJ3WA-1; Thu, 15 Dec 2022 02:39:29 -0500 X-MC-Unique: inr_tJtqNJ-yQ6R1IDJ3WA-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 7656B181E3EE; Thu, 15 Dec 2022 07:39:29 +0000 (UTC) Received: from tucnak.zalov.cz (unknown [10.39.195.114]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 3B51714171BE; Thu, 15 Dec 2022 07:39:29 +0000 (UTC) Received: from tucnak.zalov.cz (localhost [127.0.0.1]) by tucnak.zalov.cz (8.17.1/8.17.1) with ESMTPS id 2BF7dOEO3269365 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Thu, 15 Dec 2022 08:39:24 +0100 Received: (from jakub@localhost) by tucnak.zalov.cz (8.17.1/8.17.1/Submit) id 2BF7dNLu3269364; Thu, 15 Dec 2022 08:39:23 +0100 Date: Thu, 15 Dec 2022 08:39:23 +0100 From: Jakub Jelinek To: liuhongt Cc: gcc-patches@gcc.gnu.org, crazylht@gmail.com, hjl.tools@gmail.com, ubizjak@gmail.com Subject: Re: [PATCH V2 2/2] [x86] x86: Add a new option -mdaz-ftz to enable FTZ and DAZ flags in MXCSR. Message-ID: Reply-To: Jakub Jelinek References: <20221215062137.3128845-1-hongtao.liu@intel.com> <20221215062137.3128845-2-hongtao.liu@intel.com> MIME-Version: 1.0 In-Reply-To: <20221215062137.3128845-2-hongtao.liu@intel.com> X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Spam-Status: No, score=-3.5 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NONE,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: On Thu, Dec 15, 2022 at 02:21:37PM +0800, liuhongt via Gcc-patches wrote: > --- a/gcc/config/i386/i386.opt > +++ b/gcc/config/i386/i386.opt > @@ -420,6 +420,10 @@ mpc80 > Target RejectNegative > Set 80387 floating-point precision to 80-bit. > > +mdaz-ftz > +Target s/Target/Driver/ > +Set the FTZ and DAZ Flags. Jakub