From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-Status: No, score=-4.2 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,MAILING_LIST_MULTI, SPF_HELO_PASS,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from sourceware.org (server2.sourceware.org [IPv6:2620:52:3:1:0:246e:9693:128c]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id 72AB81F55B for ; Thu, 28 May 2020 12:22:54 +0000 (UTC) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 64E64397305D; Thu, 28 May 2020 12:22:53 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 64E64397305D DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1590668573; bh=VOqhm2R2vBo6AS6xwfj7ZrK/d0tq1Ny9od5FZDvhOPk=; h=To:Subject:References:Date:In-Reply-To:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=K3OuhfYwWIZlfAui0MRCCtM1pE337269fysB688SM1Y8ve4bIzTsHFujC6lu14I/u 3V3DFFoLoOOGoZmea2AMvIeBP2ddRRarOGx8FIHtexGiC28JezkACyU5az6p1kVMK4 kH1JezU90m3QdyYRCvdsUSIRiSJrzKYKhEueDAsA= Received: from us-smtp-delivery-1.mimecast.com (us-smtp-1.mimecast.com [207.211.31.81]) by sourceware.org (Postfix) with ESMTP id 76445387085E for ; Thu, 28 May 2020 12:22:51 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 76445387085E Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-193-7BnQNKKPMhO1icN7YHYLyQ-1; Thu, 28 May 2020 08:22:49 -0400 X-MC-Unique: 7BnQNKKPMhO1icN7YHYLyQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 65D08A0BF6; Thu, 28 May 2020 12:22:48 +0000 (UTC) Received: from oldenburg2.str.redhat.com (ovpn-112-91.ams2.redhat.com [10.36.112.91]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 86B392B4CE; Thu, 28 May 2020 12:22:47 +0000 (UTC) To: "H.J. Lu via Libc-alpha" Subject: Re: [PATCH v4 2/2] x86_64: roundeven with sse4.1 support References: <20200502150243.1347705-2-ibmibmibm.tw@gmail.com> Date: Thu, 28 May 2020 14:22:45 +0200 In-Reply-To: (H. J. Lu via Libc-alpha's message of "Thu, 28 May 2020 05:05:32 -0700") Message-ID: <877dwwckq2.fsf@oldenburg2.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Florian Weimer via Libc-alpha Reply-To: Florian Weimer Cc: Shen-Ta Hsieh Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" * H. J. Lu via Libc-alpha: >> Here is a benchmark result on my AMD Ryzen 9 3900X system: > > Since we don't know or may not care SSE4 machines without AVX, > should we make it to AVX only? What about Goldmont/Tremont? Those are current CPUs which do not support AVX, but I think they have sufficient SSE4 support levels for this change. Thanks, Florian