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[174.21.143.238]) by smtp.gmail.com with ESMTPSA id 186sm3047176pfe.1.2020.07.02.10.15.45 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 02 Jul 2020 10:15:46 -0700 (PDT) Subject: Re: [PATCH 2/6] target/riscv: NaN-boxing compute, sign-injection and convert instructions. To: LIU Zhiwei , qemu-devel@nongnu.org, qemu-riscv@nongnu.org References: <20200626205917.4545-1-zhiwei_liu@c-sky.com> <20200626205917.4545-3-zhiwei_liu@c-sky.com> From: Richard Henderson Message-ID: <704bff99-8ece-ae9b-cf28-8fdddf17e0d5@linaro.org> Date: Thu, 2 Jul 2020 10:15:44 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <20200626205917.4545-3-zhiwei_liu@c-sky.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::543; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x543.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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=_AUTOLEARN 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: palmer@dabbelt.com, wenmeng_zhang@c-sky.com, Alistair.Francis@wdc.com, ianjiang.ict@gmail.com, wxy194768@alibaba-inc.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 6/26/20 1:59 PM, LIU Zhiwei wrote: > An n-bit foating-point result is written to the n least-significant bits > of the destination f register, with all 1s written to the uppermost > FLEN - n bits to yield a legal NaN-boxed value > > Signed-off-by: LIU Zhiwei > --- > target/riscv/insn_trans/trans_rvd.inc.c | 1 + > target/riscv/insn_trans/trans_rvf.inc.c | 19 +++++++++++++++++++ > 2 files changed, 20 insertions(+) Reviewed-by: Richard Henderson r~