From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5A574C433F5 for ; Sun, 14 Nov 2021 10:16:23 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E43AA61027 for ; Sun, 14 Nov 2021 10:16:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org E43AA61027 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:39960 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mmCYf-0004kz-O4 for qemu-devel@archiver.kernel.org; Sun, 14 Nov 2021 05:16:21 -0500 Received: from eggs.gnu.org ([209.51.188.92]:43382) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mmCXu-0003rl-RE; Sun, 14 Nov 2021 05:15:34 -0500 Received: from [2607:f8b0:4864:20::92d] (port=44635 helo=mail-ua1-x92d.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mmCXt-0006bd-Bc; Sun, 14 Nov 2021 05:15:34 -0500 Received: by mail-ua1-x92d.google.com with SMTP id p2so28317084uad.11; Sun, 14 Nov 2021 02:15:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:reply-to:from:date:message-id :subject:to:cc; bh=YW2cOITpy4D1kAh47chpsTtHyFf7E4Jqgxlxdztfy5o=; b=a6nW9tnxOdFnAGDKh37QSr0ocaHmEDpQ1bkPtXjPz6oOkWpeNWOPDEe3Oe8np/nhMt DhRQ3Vi2FPyF556LfqGC2Iyf07HI7lVpaRJKgrkjKJgqmxzFkad4AKrKNHmjlvuUBZ+d AQKcjJU/2DtNiuumFWRoAmuM2MkU0BZdoqv1WxhVQCo4eATxNCwVKOgb7dC5sjA2Rnmm mrqQ9nindLk1uqmr1Ibi86Jm6NO8/Omad9+aXQ5TNED1DZ7jQnh/EhC0NRZOlJR8dOKT aFNFc5vY4rAp0C0BpFTazLm+fvsBEs+I/PUWVdh44BHDMLqIyj2iLMRUsv51pfPyUo/R f9IA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:reply-to :from:date:message-id:subject:to:cc; bh=YW2cOITpy4D1kAh47chpsTtHyFf7E4Jqgxlxdztfy5o=; b=eGSrQAHzYUGOUn0gDjoKdzx1Tv4Occ7TyAKnstytx9MWrkG/lNFYgYlXSuEqOYM35o wNBFg8CKKrx3LRIYpe7z78li1OCfsVPqdw2DPyO4U7J6A37t8eeMgm8eV4G8ERL7Gn6s fZyC72gD3Y1ea3YbsKTzyW6vkaP7FYTAeWY5B6wDnYX2CzsYYrVPFfLDsqwC7FlOoPou Okl4F9x/o8soptLGzxVKcBdJjbVKo4NW141o8d0dz/o88RS4FoX8aoO/j3i8h2Q8NIak lkrSMNvfsveWYwZSXhb8IiZSuWT0EHy/RRQRJb64a73SE4G/9gyxiWKaFxKUk5St4xry UFYg== X-Gm-Message-State: AOAM531Jn+hqVMHnZDtLSH1PQbSmjBLrSdNbI9bkCH5T8CbLUCzzuMLa GAuMvXqSKxnUyTGFd8UAVVCV6AjOoT9HsAbOqqXrcUJuo7g9gg== X-Google-Smtp-Source: ABdhPJwRyeLLIlITrW2nJQ3Frf6fPgjhKO5AIErd9LXYnzjKuoeg8+uV/5mnGBazl/+9dCwXInNZwy1sEWqS2M7aJao= X-Received: by 2002:a05:6102:2924:: with SMTP id cz36mr30216896vsb.33.1636884931651; Sun, 14 Nov 2021 02:15:31 -0800 (PST) MIME-Version: 1.0 References: <77cac06d-f68f-ec30-5c7e-0d32a49a162d@linaro.org> In-Reply-To: <77cac06d-f68f-ec30-5c7e-0d32a49a162d@linaro.org> From: =?UTF-8?B?572X5YuH5YiaKFlvbmdnYW5nIEx1byk=?= Date: Sun, 14 Nov 2021 18:15:22 +0800 Message-ID: Subject: Re: ppc/fpu_helper.c To: Richard Henderson Content-Type: multipart/alternative; boundary="000000000000e3ac7705d0bcf8b6" X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::92d (failed) Received-SPF: pass client-ip=2607:f8b0:4864:20::92d; envelope-from=luoyonggang@gmail.com; helo=mail-ua1-x92d.google.com X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, PDS_HP_HELO_NORDNS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: luoyonggang@gmail.com Cc: qemu-ppc@nongnu.org, qemu-level Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --000000000000e3ac7705d0bcf8b6 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Sun, Nov 14, 2021 at 5:07 PM Richard Henderson < richard.henderson@linaro.org> wrote: > > On 11/13/21 11:07 AM, =E7=BD=97=E5=8B=87=E5=88=9A(Yonggang Luo) wrote: > > I've seen nothing in fpu_helper.c to update > > the fpscr to FP_FR, > > that is there is no code with `fpscr |=3D FP_FR`, > > is that valid for PowerPC? or it's just because this is hard > > to implement and then the FP_FR are always not set for fpscr > > It is unimplemented, yes. I think that no one has spent the time; I don't think that it > should be hard, necessarily. Thanks, I also have a question, where is the complete PowerPC floating point instrunctions tests case? I wanna improve the performance of powerpc floating point calculation and don't lost the accuracy of it So I need a complete testsuite for it. > > > r~ -- =E6=AD=A4=E8=87=B4 =E7=A4=BC =E7=BD=97=E5=8B=87=E5=88=9A Yours sincerely, Yonggang Luo --000000000000e3ac7705d0bcf8b6 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


On Sun, Nov 14, 2021 at 5:07 PM Richard Henderson = <richard.henderson@linar= o.org> wrote:
>
> On 11/13/21 11:07 AM, =E7=BD=97=E5=8B= =87=E5=88=9A(Yonggang Luo) wrote:
> > I've seen nothing in fpu= _helper.c to update
> > the fpscr to FP_FR,
> > that is t= here is no code with `fpscr |=3D FP_FR`,
> > is that valid for Pow= erPC? or it's just because this is hard
> > to implement and t= hen the FP_FR =C2=A0are always not set =C2=A0for =C2=A0fpscr
>
>= ; It is unimplemented, yes.=C2=A0 I think that no one has spent the time; I= don't think that it
> should be hard, necessarily.

Thanks, I also have a question, where is the complete PowerPC floatin= g point instrunctions tests case?
I wanna improve the performance= of powerpc floating point calculation and don't lost the accuracy of i= t=C2=A0=C2=A0
So I need a complete testsuite for it.

>
>
> r~



--
=C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0=E6=AD=A4=E8=87=B4
=E7=A4=BC
=E7=BD=97=E5=8B=87= =E5=88=9A
Yours
=C2=A0 =C2=A0 sincerely,
Yonggang Luo
--000000000000e3ac7705d0bcf8b6--