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[83.52.55.163]) by smtp.gmail.com with ESMTPSA id z17sm12205641wrh.66.2021.08.30.14.49.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 30 Aug 2021 14:49:57 -0700 (PDT) Subject: Re: [PATCH 45/48] tcg/optimize: Propagate sign info for logical operations To: Richard Henderson , qemu-devel@nongnu.org References: <20210830062451.639572-1-richard.henderson@linaro.org> <20210830062451.639572-46-richard.henderson@linaro.org> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Message-ID: <61e652ef-03b9-7e1a-c2d2-d49d033b38f2@amsat.org> Date: Mon, 30 Aug 2021 23:49:56 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210830062451.639572-46-richard.henderson@linaro.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::336; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-wm1-x336.google.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, NICE_REPLY_A=-0.932, 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 8/30/21 8:24 AM, Richard Henderson wrote: > Sign repetitions are perforce all identical, whether they are 1 or 0. > Bitwise operations preserve the relative quantity of the repetitions. > > Signed-off-by: Richard Henderson > --- > tcg/optimize.c | 29 +++++++++++++++++++++++++++++ > 1 file changed, 29 insertions(+) Reviewed-by: Philippe Mathieu-Daudé