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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 9120DC46CD2 for ; Tue, 9 Jan 2024 08:36:49 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rN7bG-00010y-Ec; Tue, 09 Jan 2024 03:36:42 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rN7bE-00010h-Ie for qemu-devel@nongnu.org; Tue, 09 Jan 2024 03:36:40 -0500 Received: from mail-pl1-x62a.google.com ([2607:f8b0:4864:20::62a]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rN7bB-0007dw-WD for qemu-devel@nongnu.org; Tue, 09 Jan 2024 03:36:39 -0500 Received: by mail-pl1-x62a.google.com with SMTP id d9443c01a7336-1d3eae5c1d7so11269085ad.2 for ; Tue, 09 Jan 2024 00:36:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1704789395; x=1705394195; darn=nongnu.org; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=LrNQc4nUn38P9xnLxpS/uxdLLjaCdgcsBJ1PiNeRlO0=; b=oKI3bC3N2IScuW8vyR/8XR65tW2hqOaJ6UaPfnjqx8uCYNuGgusBkjjXuOcC38jBGP +rVZTIQpnYMvNHwq8TGsj0KmU+Wo/24aCup+68xQtCX53uTGjoLgMuj11xY7rfqb/OoQ B0K1fe6yxQ0B1A1H85bvY910AYB0w672sEwTCbRfyEBHZihPE+WJvX60eLSUbD6m3rVo C2pdE+MnrBdf0K+/be83y0U6VO8uWHRMB7Wv7SrAaKMAQazojJ/FCDp8rq6VoYHfkhFG q9G/DuotpBtiLEi2KP3fHYJXkhGVWPeZHdqCXMg9VsLdJ8Ih5EtGWgdSKR17rbIgCWqd swkw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1704789395; x=1705394195; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=LrNQc4nUn38P9xnLxpS/uxdLLjaCdgcsBJ1PiNeRlO0=; b=iFk4nwBfyyzzzkMsu4ZGmMplRfKbeuI6YAjAafwzEbLk6VJ7tDL0y7ANk9VljtRiBo xCniyM6bqomuETEAbsKQUccaYeVvnHITbL78Icu9DzaS1kVvVFh6+YjB8lZZE+pKqFZk jBlnytV2u4fF1Ag4XKbGeDQR9REdiHhsFLnJbbOzQfiejis8vMXYyzxWx75WqqDlHu6f n0dRHeIAYJHu+zhORRrKnZ3wfGL2qESZjQZClRIOxA58FZ9MRzkuHPTPIvIC9rdkW2t2 tvjwJlCEe7HazCRZzHrOXc8OkYFwJYpC5UqMAkyNdsy/HTdVEM8YI/3rvuH/SgJ8oQZN zXBA== X-Gm-Message-State: AOJu0Yx0BYyIbvx61Wq9jDqeX66JvohvSIOsBK0/d516mDOPlkFw66h5 4+CN87vYt1cupSiBYAjD4D2zMAEOW3aR0Q== X-Google-Smtp-Source: AGHT+IEDgcHdbjQG/SBb7Y8jucxZ4g3Cfy4vxN6pEXpRnCHL3WY6LM8R9Y7kI2gWSKRXkWRv8/lTCg== X-Received: by 2002:a17:902:bb16:b0:1d4:e234:a3da with SMTP id im22-20020a170902bb1600b001d4e234a3damr2155942plb.139.1704789394874; Tue, 09 Jan 2024 00:36:34 -0800 (PST) Received: from [192.168.40.227] ([172.58.27.248]) by smtp.gmail.com with ESMTPSA id m10-20020a170902768a00b001d5595514d1sm764591pll.307.2024.01.09.00.36.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 09 Jan 2024 00:36:34 -0800 (PST) Message-ID: Date: Tue, 9 Jan 2024 19:36:24 +1100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 00/35] tcg: Introduce TCG_COND_TST{EQ,NE} Content-Language: en-US To: Paolo Bonzini Cc: qemu-devel , =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= References: <20231028194522.245170-1-richard.henderson@linaro.org> <6327ac54-6394-4648-b4b8-2294a37b1588@linaro.org> From: Richard Henderson In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::62a; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62a.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, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 1/9/24 09:55, Paolo Bonzini wrote: > > > Il lun 8 gen 2024, 22:45 Richard Henderson > ha scritto: > > > I was thinking: a lot of RISC targets simply do AND/ANDI > > followed by the sequence used for TCG_COND_NE.  Would it make sense to > > have a TCG_TARGET_SUPPORTS_TST bit and, if absent, lower TSTEQ/TSTNE > > to AND+EQ/NE directly in the optimizer? > > Probably best, yes. > > > Ok, I will give it a shot. I'm in the process now... r~