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bh=LkV+ScUSc0EZpBj1DzJy4aHep5fClBR/f+6F/+3LFOM=; b=iZBfKGXoflGRnSmLnxEgP809XLZhWdMS7kjeEnutVl+GAEjudO/PP1DoofySlZuJ3galmk 0IkIxscfR2K/9wCSulrVRvw7vE1ERIcJ46IAfL/5IrGJIxyTvpXBJeI+rudVlYqTNv5NQ8 Jotm09gXPrECq28SejtO9cmq6vQ4DxY= 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-138-7dWnn-MVM46zcwKf1kumlg-1; Thu, 01 Oct 2020 13:08:06 -0400 X-MC-Unique: 7dWnn-MVM46zcwKf1kumlg-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4CDDD186840F; Thu, 1 Oct 2020 17:08:05 +0000 (UTC) Received: from [10.36.112.77] (ovpn-112-77.ams2.redhat.com [10.36.112.77]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0B8E878818; Thu, 1 Oct 2020 17:08:03 +0000 (UTC) Subject: Re: [PATCH v1 04/20] s390x/tcg: Implement 32/128 bit for VECTOR FP ADD To: Richard Henderson , qemu-devel@nongnu.org References: <20200930145523.71087-1-david@redhat.com> <20200930145523.71087-5-david@redhat.com> <19ecdb4f-7d86-39ff-2f8c-883d327e2646@linaro.org> From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: <19ecdb4f-7d86-39ff-2f8c-883d327e2646@linaro.org> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=david@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=63.128.21.124; envelope-from=david@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/01 02:15:30 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -23 X-Spam_score: -2.4 X-Spam_bar: -- X-Spam_report: (-2.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.26, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-s390x@nongnu.org, Cornelia Huck , Thomas Huth Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 01.10.20 18:08, Richard Henderson wrote: > On 9/30/20 9:55 AM, David Hildenbrand wrote: >> + case FPF_LONG: >> + fn = se ? gen_helper_gvec_vfa64s : gen_helper_gvec_vfa64; >> + break; > > BTW, any reason not to pass SE as data, like you do later for SQ? Or > potentially the entire M field as is? Having a separate implementation for "se" is desirable, because the compiler can optimize-out the complete loop. If we simply pass the M field to the helper, I'm not sure how likely it is that the compiler will specialize (would have to double check). (if we decide to remove all "s" helpers here, we'd better do it for all helpers) > > Just wondering if it would help tidy up here... -- Thanks, David / dhildenb