From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf1-x134.google.com (mail-lf1-x134.google.com [IPv6:2a00:1450:4864:20::134]) by sourceware.org (Postfix) with ESMTPS id 1F443385841C for ; Mon, 18 Oct 2021 10:10:19 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 1F443385841C Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=ventanamicro.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=ventanamicro.com Received: by mail-lf1-x134.google.com with SMTP id x27so66080045lfa.9 for ; Mon, 18 Oct 2021 03:10:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=2k/HdHbW7InW7KdxIpvSxR2VroDYfC7mhJ4WWGTwNjw=; b=Ppz10OFoIGWzl5gd4DCGojELH+Ef+SYDXlscpXar0T/uoAWV2YT+L637mGZrG0/uXH 6L5oqm29RpB+eMRTb5s2+6/JQ6BELdF03fYMuCJjAK10y9cgCBSBPb+i6T1j/VWaHfxr bQTMfcifljTXhFAJVk5HFMmZMQW9Xrae/WswX0NVolF5Zn44aqZ7/lHQ4MfKsCPQMor1 5O5am2cJKlWTydnIzSih+uKZTuA+iKOCmh+HLKATqN2goQLHDyJb5lpxu3HFwdgq/+Na hkhAALye/HJiwNhOh3TefMHdA6x1E/UQOQKEU/DCZwQfacrdzYac9WENIB28GLq0gTIv n16Q== 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:from:date :message-id:subject:to:cc; bh=2k/HdHbW7InW7KdxIpvSxR2VroDYfC7mhJ4WWGTwNjw=; b=7BUcpNM7CVZd8tzU8qHzO5zQTziMwG2evPv8crfqQEBcBVFZdSTVL1RYYBFKe8dlQJ JY1LyI0AnEHyTYGaw50xGsjWTdfUeQarZ0SjIn3km8GQgTV7etQPHGvnlPrPsvzmGQyg 9V6lMCjaBZb8kuzpt7vo/CbbGbfaZD3ta4bNCA5Q4zmkz1yWFPQ3aim3o5uRKykLF0mB rVZXu4e/McJE0zsY78kOM4XI/NKcqd/ZCy7D4TaS0sWqe9zHeJX8YaJpGopRm2oGij7i Yj/0WbOCpbwD4nG65xLKx26g8JEjcgbId/tfQC6R518Z45mzPcRAUs1Yub/mrum1704Z A2jA== X-Gm-Message-State: AOAM5331EZk+M6obMiyStzV8tHqb1O8kcC55Q6T+KmNR6L+eYOfdkg+V HIkQbsUtNUfNOeWLFwu9qce4N3YJA6DjhPXVWg5hcQ== X-Google-Smtp-Source: ABdhPJyQWWrdYF+ifLaFuZAho6EGLRwqGjQPatZ3bQh41jznLOhahzlSoqqui34w0MhTcCPh2r9nTvB8LYz6km4LbrM= X-Received: by 2002:a05:6512:2301:: with SMTP id o1mr27839388lfu.333.1634551817559; Mon, 18 Oct 2021 03:10:17 -0700 (PDT) MIME-Version: 1.0 References: <20210923075731.50125-1-kito.cheng@sifive.com> <20210923075731.50125-2-kito.cheng@sifive.com> In-Reply-To: From: Christoph Muellner Date: Mon, 18 Oct 2021 12:10:06 +0200 Message-ID: Subject: Re: [RFC PATCH 1/8] RISC-V: Minimal support of bitmanip extension To: Kito Cheng Cc: GCC Patches , Kito Cheng , Jim Wilson , jiawei , Palmer Dabbelt , Andrew Waterman Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-1.6 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Oct 2021 10:10:20 -0000 On Mon, Oct 18, 2021 at 10:48 AM Kito Cheng wrote: > > Hi Christoph: > > > I think this needs another specification class (there is a > > specification for the instructions and it is in public review). > > Proposal: ISA_SPEC_CLASS_FROZEN_2021 > > That's a good point, but ISA_SPEC_CLASS_FROZEN_2021 is hard to > reference to which spec, so I would prefer to add a -misa-spec=2021 to > align platform/profile spec, and then ISA_SPEC_CLASS_2021, and before > RISC-V platform/profile spec has released, let keep > ISA_SPEC_CLASS_NONE :p For sure we cannot reference a spec that is not frozen yet (i.e. platform/profile). ISA_SPEC_CLASS_FROZEN_2021 was a proposal for all groups of ISA extensions that have been frozen in 2021 (zb*, zk*, etc.) and will eventually be ratified. But yes, keeping NONE until the specifications are ratified and change the specification class then is also possible.