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 X-Spam-Level: X-Spam-Status: No, score=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2F5DC4743C for ; Mon, 21 Jun 2021 15:10:58 +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 32C01610C7 for ; Mon, 21 Jun 2021 15:10:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 32C01610C7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:43566 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lvLZh-0002qF-2w for qemu-devel@archiver.kernel.org; Mon, 21 Jun 2021 11:10:57 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:45870) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lvLYI-0001e2-PN for qemu-devel@nongnu.org; Mon, 21 Jun 2021 11:09:30 -0400 Received: from mail-ej1-x635.google.com ([2a00:1450:4864:20::635]:40564) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lvLYH-0001av-8r for qemu-devel@nongnu.org; Mon, 21 Jun 2021 11:09:30 -0400 Received: by mail-ej1-x635.google.com with SMTP id my49so29290047ejc.7 for ; Mon, 21 Jun 2021 08:09:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=nrifIVBbJxrxdt7peOTsEjs3YIjZNdrMkbcYkUuedUE=; b=Vl0Gm4yJq6nMx+qpVs0OUKszQhaXLvKZ42JemFAyjCiOR//yv9A87u9E4bbHl/Yg8R BAxOAcUcf5HtjN/AjtVyN8yc2bXZ5fCLmLj91EBh7WShCyEddtxi9Hutv1HQyrt7tPcD pGulGxD9ZehmF7b2lkxnYVe+fyqEJ3oBsP3HOKN1rfGWv0eLQc8zzxa28YTWKPTMvORa livMSP1whC11mRJFVC6rhqIn3wNETsLaoqQIwWuYLb9QFokPghMrlhUieV/2dLw8Gm7g tPKgHXcvle6v4SmdVsE4kWXXNhkX6gT6iQkTZTZIVURUhACGes5jSlDInw4bRVrxvHBy OY5w== 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=nrifIVBbJxrxdt7peOTsEjs3YIjZNdrMkbcYkUuedUE=; b=UIP8jKpWMSncW+KqtCspd+Wc2EbktFPbp2gC41q4l39253zsxO38cCJUfqfidc8aud MuTIO9mbk4PaxnzFX0XgDHTn5rSXGTp+/a5DZggZIIe5/URatf+FYtPWmx5IshcLt3G3 Rmhzo6GLtxR8zHk+3ClxhydzrDg6QnFYp+eCd1QA6gUTMo0P+ClY5XvMee6PD1mTBdka pBsjm1yTZz02IRzOq8OYCWhbnqee0Ywl3NkG4JPCgKfslcqpq6fcaM2QD3Ym4w9OoZyj bRirfnhxnDOXPiL/ebtl0RBOtw6+sNaCSuk7a0rhz1Z0IXYDgR6Qdf57qj9l40QYYPTT uj6A== X-Gm-Message-State: AOAM533qoZay1PPB97Us6X1jtftFbPZYoRsgCiLoOHIh7YEg3kwtiFZh rQ61giywi6xrwgSMRCn4Fo/NFRNztzvIR/UGyFTyvA== X-Google-Smtp-Source: ABdhPJxFRAvwvHrUeHn7bcvNxSocIAfPMwvPhvtdMVTsH7M8MYEmj2kYYKFJ0oYgKnrU4J5I+yNr9U7DBUv1Y1i70OM= X-Received: by 2002:a17:906:a108:: with SMTP id t8mr25051321ejy.407.1624288167603; Mon, 21 Jun 2021 08:09:27 -0700 (PDT) MIME-Version: 1.0 References: <20210614083800.1166166-1-richard.henderson@linaro.org> <20210614083800.1166166-21-richard.henderson@linaro.org> In-Reply-To: <20210614083800.1166166-21-richard.henderson@linaro.org> From: Peter Maydell Date: Mon, 21 Jun 2021 16:08:52 +0100 Message-ID: Subject: Re: [PATCH 20/28] target/arm: Improve REV32 To: Richard Henderson Content-Type: text/plain; charset="UTF-8" Received-SPF: pass client-ip=2a00:1450:4864:20::635; envelope-from=peter.maydell@linaro.org; helo=mail-ej1-x635.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, RCVD_IN_DNSWL_NONE=-0.0001, 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 Developers Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Mon, 14 Jun 2021 at 09:38, Richard Henderson wrote: > > For the sf version, we are performing two 32-bit bswaps > in either half of the register. This is equivalent to > performing one 64-bit bswap followed by a rotate. > > For the non-sf version, we can remove TCG_BSWAP_IZ > and the preceding zero-extension. > > Cc: Peter Maydell > Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell thanks -- PMM