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([71.212.142.33]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-83f19c5be71sm9670317b3a.39.2026.05.16.17.25.58 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 May 2026 17:25:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1778977559; x=1779582359; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=aizZ6KsxuScbuarSuGl62Wou0yp8xd59JdQCbRvge3Q=; b=sAdgmxIZ2SNp1KU+/f/R2fA6D61RNdVOfXes6gFyVhVrIXxWO1HqPSggN1rBvOSSLu sbXGlszWb43NnI9qjV8j+7u4gwD2I0RzoXA9uWCliN/wWnhQ6Myy4Q2/t/eQc7o+Hnyq SFJMUu8js+Z3bAtw+U5ClKXHQ0fCK1iqG554HdbXckyHXOggRcIqI9gcpYUBy4fr4W+Y c41jJbrGdEGub9PAjsIZaGA0j4WYib6G7cExRwxl2Q5gUnSQSAVM7IfnluG2aW4BczMc uAIiHpz35FQUvSj73FRTE7le5ImN4kzTGx0zLvO/RsJBzyLVg6ddHAotpmX9LZXZEza7 4Ejg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778977559; x=1779582359; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=aizZ6KsxuScbuarSuGl62Wou0yp8xd59JdQCbRvge3Q=; b=ah/Ar3NrE10PQfYp12FKtknAgwnMi8pv3D06x9L1q/F+lkkALvpd6sqotJIkqsmz9X Agliz0LCWVjC/z/enjKpnmkvxvdGGUrgtu9PX21imFS47wLQI+OWoN0lTufgKzRkbwUh ZyLOqgvoKuqk7W5gH6FL4HHiGif2Ad8Xvgw8lL2vUvfLNhpHWJkP7MYla/dfIq7boU4C GiRxcYduexWWcd40Z/cgUgbRBBdTPbaFkH9pyqSWIfEHGWxqA/7Z/MXWZHrEbo+oX6dR 8ZVyOt76BF/uPzeE/fOEComFn7nCGOunhkgg691XfZhwb/MEleCPZgIRxEkcf12WUNbY B88g== X-Gm-Message-State: AOJu0YzbKPQn3es9+sZSj/4lSBepJVB7235QL/SeKQaj0hjbaYDdeFzW Hf7cFD7g2Bdvz32Lh8u7Jud/6lcDKoKLa2xfE2J20dH3/00wQV/cID1isfgdcpgj/zN5x5j/AKX 1inNA X-Gm-Gg: Acq92OH/nJURVsntUDldxyerHM/zT/EaJFPTyFWBzlijNh6iVCTZCV8MAFJ1nA3aQUZ 9x9T9w4Hj43tlLhlifjqtEKDN2qw9hZn9vHnb0WnqR0/HL5WPzEm+Bbc3Do3FpujVjaEwv/aC+Q UmIvOYiwwU26dj4URtxM5EP6bSLZQsit4Drsq/r6zVriu8uS095neBPaDKRZrGmam71tDmz3giE AJUGBoq2BIMYxUAGM7khKob6SZX6zbZygU3ood+33Y9IMqur0OTh7BX9RG/x2ocWFj3rJNhxDHQ LIgeD9QEKZNYFLzYLD4ojglnduQ7QoVJha89knKlrD7w2qkuxgzWeoIcRnig0naueYw6upDpiZ2 GQKQ5reT8A80bYMSlJJI1iChNRiK+DAwoY1pZvseeEO4Xa1OZc40cZlR3V19IHVdngSyVo4IY7J jswe/M5oqu9G0gTbloQVu7OwAoA9zA X-Received: by 2002:a05:6a00:4fc8:b0:838:1636:e2d3 with SMTP id d2e1a72fcca58-83f33c97154mr10721453b3a.35.1778977559196; Sat, 16 May 2026 17:25:59 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v4 05/12] fpu: Simplify 0 +/- N case in parts_addsub Date: Sat, 16 May 2026 17:25:42 -0700 Message-ID: <20260517002550.321291-6-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260517002550.321291-1-richard.henderson@linaro.org> References: <20260517002550.321291-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists1p.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::431; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x431.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: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1778977646755158500 Content-Type: text/plain; charset="utf-8" Consolidate the tests for zero and anynorm. Add comments for a few cases. Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- fpu/softfloat-parts.c.inc | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index 3246702289..45606f8402 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -556,6 +556,7 @@ FloatPartsN partsN(addsub)(const FloatPartsN *a_orig, } =20 if (ab_mask =3D=3D float_cmask_zero) { + /* 0 - 0 */ a.sign =3D s->float_rounding_mode =3D=3D float_round_down; return a; } @@ -581,23 +582,20 @@ FloatPartsN partsN(addsub)(const FloatPartsN *a_orig, } =20 if (ab_mask =3D=3D float_cmask_zero) { + /* 0 + 0 */ return a; } =20 if (ab_mask & float_cmask_inf) { + /* N + Inf or Inf + N */ a.cls =3D float_class_inf; return a; } } =20 - if (b.cls =3D=3D float_class_zero) { - g_assert(is_anynorm(a.cls)); - return a; - } - - g_assert(a.cls =3D=3D float_class_zero); - g_assert(is_anynorm(b.cls)); - return b; + /* 0 +/- N or N +/- 0 */ + assert((ab_mask & float_cmask_zero) && (ab_mask & float_cmask_anynorm)= ); + return b.cls =3D=3D float_class_zero ? a : b; } =20 /* --=20 2.43.0