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=-4.1 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 7CD011F55B for ; Fri, 29 May 2020 11:30:32 +0000 (UTC) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 694BD3840C14; Fri, 29 May 2020 11:30:31 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 694BD3840C14 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1590751831; bh=sM2tb5QqJ7OHy7Hee4r4ATpo/3OaGF2ibeec1dJUKYk=; h=References:In-Reply-To:Date:Subject:To:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=FzU6yhDCzeOOAowSTk93gp/XfEf3uKZXVFTldOcO7cB8KVoYJjy+bpVG1QKalj+NP htiV2A3Wc5Zao7aVXCH/97RQ7fctYCju1CwGPYH9IBzQB7sSaRE96U43zyMkUFX4Uo 0EGs9bcSaVbd61X0oUxKLHPwAQYTP6Dq16YYmLhE= Received: from mail-io1-xd44.google.com (mail-io1-xd44.google.com [IPv6:2607:f8b0:4864:20::d44]) by sourceware.org (Postfix) with ESMTPS id C0ABC386F439 for ; Fri, 29 May 2020 11:30:28 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org C0ABC386F439 Received: by mail-io1-xd44.google.com with SMTP id o5so1904752iow.8 for ; Fri, 29 May 2020 04:30:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=opiLw8H01///JE2L169vtp61MCAXF2c8uwNPeRTIMbA=; b=K2yniVeBXlOXuexIAfG3veXleQgcrXMofMCM6rRoO4AozrQvI1fAVNIzjLmcvIj4sb NT5ZdxfJqHA5ljAgVkGwJ7mU2GycCCYyWvrhUuIrC2tAfY6FOffWsI9bML7+x1AMb1B2 9oNVR0qBGr/AakEVf8kmliO48AZ9jJkjj/+Lbn3TJStiQW8EaILEFXsRQ/LfJVDTeILW /Duw/+oz/6x6lgbLDcjxTSB8FiLfQuujcYLsnAuMij8qUKJjUOREguGMsb25MauMeDtt P0oduuX1eF1KETOCl1uFOFHErdWXnfAs2zUBxzTfwbqIH9JBu+foHdFIEwKOnEEa6fbp SuAQ== X-Gm-Message-State: AOAM532xDmlcDntat8BuE6+/SgS04S5PlXFXDFXRjPhCeFxK66jU/z8Q eP43CiBUYpXq3KneOehWtoAFMPMr2aaoaP/eiJg= X-Google-Smtp-Source: ABdhPJxr02W3GcMh0oPZWepsu5e4vh1eplKnlXO7T0RbEWFIj7MhTfF+mPEeefaoyiyL+af819jeMxdf3knosTV+6zo= X-Received: by 2002:a05:6602:2e05:: with SMTP id o5mr6155845iow.28.1590751828282; Fri, 29 May 2020 04:30:28 -0700 (PDT) MIME-Version: 1.0 References: <20200502150243.1347705-2-ibmibmibm.tw@gmail.com> <877dwwckq2.fsf@oldenburg2.str.redhat.com> In-Reply-To: Date: Fri, 29 May 2020 04:29:52 -0700 Message-ID: Subject: Re: [PATCH v4 2/2] x86_64: roundeven with sse4.1 support To: "Cui, Lili" Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.29 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: "H.J. Lu via Libc-alpha" Reply-To: "H.J. Lu" Cc: Florian Weimer , Shen-Ta Hsieh , "H.J. Lu via Libc-alpha" Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" On Fri, May 29, 2020 at 1:48 AM Cui, Lili wrote: > > > > -----Original Message----- > > From: H.J. Lu > > Sent: Thursday, May 28, 2020 8:32 PM > > To: Florian Weimer ; Cui, Lili > > Cc: H.J. Lu via Libc-alpha ; Shen-Ta Hsieh > > > > Subject: Re: [PATCH v4 2/2] x86_64: roundeven with sse4.1 support > > > > On Thu, May 28, 2020 at 5:22 AM Florian Weimer > > wrote: > > > > > > * 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. > > > > > > > Good point. Lili, please collect glibc micro benchmark > roundeven/roundevenf > > data before and after: > > > > https://sourceware.org/pipermail/libc-alpha/2020-May/113533.html > > > > on Tremont. > > > > -- > > H.J. > > Hi H.J, > > Result is here. > benchmark result before this commit on Tremont > > > > benchmark result after this commit on Tremont > > > > Hi Lili, The results are empty. -- H.J.