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[189.204.159.168]) by smtp.gmail.com with ESMTPSA id a7sm1287151ooo.30.2021.03.25.07.54.08 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 25 Mar 2021 07:54:09 -0700 (PDT) Subject: Re: [PATCH 07/15] Hexagon (target/hexagon) use softfloat default NaN and tininess To: Taylor Simpson , qemu-devel@nongnu.org References: <1616640610-17319-1-git-send-email-tsimpson@quicinc.com> <1616640610-17319-8-git-send-email-tsimpson@quicinc.com> From: Richard Henderson Message-ID: <7371fb85-28fb-0e3e-8801-f6f529ca937d@linaro.org> Date: Thu, 25 Mar 2021 08:54:05 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 MIME-Version: 1.0 In-Reply-To: <1616640610-17319-8-git-send-email-tsimpson@quicinc.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::32d; envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x32d.google.com X-Spam_score_int: 12 X-Spam_score: 1.2 X-Spam_bar: + X-Spam_report: (1.2 / 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, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_SBL_CSS=3.335, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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: ale@rev.ng, bcain@quicinc.com, philmd@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 3/24/21 8:50 PM, Taylor Simpson wrote: > @@ -180,6 +183,8 @@ static FloatParts parts_silence_nan(FloatParts a, float_status *status) > #if defined(TARGET_HPPA) > a.frac &= ~(1ULL << (DECOMPOSED_BINARY_POINT - 1)); > a.frac |= 1ULL << (DECOMPOSED_BINARY_POINT - 2); > +#elif defined(TARGET_HEXAGON) > + return parts_default_nan(status); This part is incorrect. You should be changing no_signaling_nans above, because: 4.3.11.2 Floating-Point Representation ... The ISA does not include IEEE754 signaling NaNs ... r~