From owner-freebsd-toolchain@freebsd.org Sat Sep 9 19:14:38 2017 Return-Path: Delivered-To: freebsd-toolchain@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 91D3DE0372F for ; Sat, 9 Sep 2017 19:14:38 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Received: from mail-it0-x22a.google.com (mail-it0-x22a.google.com [IPv6:2607:f8b0:4001:c0b::22a]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 58C1B746FC for ; Sat, 9 Sep 2017 19:14:38 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Received: by mail-it0-x22a.google.com with SMTP id c195so9627283itb.1 for ; Sat, 09 Sep 2017 12:14:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20150623.gappssmtp.com; s=20150623; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=e33g3XNtCEg4FWZf6sC7BLlQC1u2IX17wsYyu/4FFLA=; b=o2FCRr0qRqH3IKfbdBrGa42RYF7HPCkkQ/RrdIq9k6n2CHa6gzYRF9pTK9U2U7ukVP nv/SDY9QOIO7+QNhEYoeHAphs9Q4H6HHFmBdHMvapzcrXmQOe07mWvTTsAMlOvSQ+PV7 v/BTCW0FMxk3ylHi3GFRGBLNprpwG/A0pEbB5P6HhowJh6lO/pU/rq7UfKpVSGsYQFLh 58L053Ga+KW8W1XCSv6DrsNgYUvhylK/9fNfJzptl+7W0mfnPO/n0HM9FtGGD5MDRPEB k/+nRhUgZQAtKFZ/TSYQkTBItAuyTK1ZDlzr+FCCWlHineVpB8xvSw4tfnzGOgS7p2tn PgSg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=e33g3XNtCEg4FWZf6sC7BLlQC1u2IX17wsYyu/4FFLA=; b=YMMVNd720bcCVB7MyDoW+2z1ERYngaaJhJ0y9vBhxmPDERJ4jT0oSiy3f0OX3hPEtZ 7a3IR5oyiN1RK+ZRkvle4JquPIjugVPbM83311JKygS6o3Wbnh/jmb76AxTQXwivIqrI WUTLPruX25jyYsjyYc08WrkEa3Rt9u6M6eEU60Ta6Ge71qGANiGq6f+YV8tvM/SfOPkX 2hDxA6cOk4fKPxxCwW7kUQy8CUgVgkVmsVGj31CZqf1ZqYccPREnMM2REd+oo8I4LH+1 3vp9IiyrPSQmuIdrQ81OjzIfVw5+yzi7CBnw+gqUJchrb8g7zjfIqMYpXydDq0JUh1Ww xJyA== X-Gm-Message-State: AHPjjUhYnhVbfQWqr8ORcAzpRGh4WmYozdddd3vWaORpQw+xPoK0ictc 8338K5N5537GpT4zDAKi1/DAcVdM8GsB X-Google-Smtp-Source: ADKCNb6VUAvLjylT8s5N6cMdXB99HZNHrCRyBRrbYNu3CXqwfMvel1ob1k1eGgjhNFGDshJfmTbUAkVOwIlbH+sz0N8= X-Received: by 10.36.179.79 with SMTP id z15mr6751027iti.26.1504984477612; Sat, 09 Sep 2017 12:14:37 -0700 (PDT) MIME-Version: 1.0 Sender: wlosh@bsdimp.com Received: by 10.79.10.71 with HTTP; Sat, 9 Sep 2017 12:14:36 -0700 (PDT) X-Originating-IP: [2603:300b:6:5100:d5ae:f1f3:42c8:b0f7] In-Reply-To: References: From: Warner Losh Date: Sat, 9 Sep 2017 13:14:36 -0600 X-Google-Sender-Auth: KJHYwfDDv7VqBMFbUwbmtcC92VA Message-ID: Subject: Re: FCP-100: armv7 plan To: Jan Beich Cc: "freebsd-arm@freebsd.org" , "freebsd-toolchain@FreeBSD.org" Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: freebsd-toolchain@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Maintenance of FreeBSD's integrated toolchain List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 09 Sep 2017 19:14:38 -0000 On Sat, Sep 9, 2017 at 1:05 PM, Jan Beich wrote: > Warner Losh writes: > > > Greetings, > > > > This will serve as 'Last Call' for any objections to the plan to create > an > > armv7 MACHINE_ARCH in FreeBSD, as documented in FCP-0100. > [...] > > Some ports want NEON support but FCP-0100 is vague about FreeBSD-specific > differences between armv6 and armv7. Clang appears to enable NEON for all > *-gnueabi* targets but I have no clue about GCC. Apparently, Android and > Debian don't assume NEON on armv7. > > related: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221898 > Yes. We are vague about it on purpose. Just like we're vague about MMX, MMX2, etc on x86 because different processors can/want use different things. The goal, if it doesn't work already, is for NEON to work if used, but not be required, just like all the other optional features of a CPU. Warner