From patchwork Thu Sep 24 01:24:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 272915 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A5E8CC4363D for ; Thu, 24 Sep 2020 01:26:16 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 20EC32145D for ; Thu, 24 Sep 2020 01:26:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="kPMwDU46" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 20EC32145D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:38668 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kLG1X-0006Yq-3G for qemu-devel@archiver.kernel.org; Wed, 23 Sep 2020 21:26:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43726) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kLG0M-0004oO-0E for qemu-devel@nongnu.org; Wed, 23 Sep 2020 21:25:02 -0400 Received: from mail-pl1-x632.google.com ([2607:f8b0:4864:20::632]:39834) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kLG0K-0005hR-CO for qemu-devel@nongnu.org; Wed, 23 Sep 2020 21:25:01 -0400 Received: by mail-pl1-x632.google.com with SMTP id y17so736384plb.6 for ; Wed, 23 Sep 2020 18:25:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=5CbuzJn61hBLc+FY8dWMDM+0yvJ0dAh227GS03ZS2Y4=; b=kPMwDU463lCbNamT3GFvdKX+kFYWHxeNz2SrIxb6WcjOhvtWJ9ooZUMhSHlg650FWq KWiL+eAyFNrDz8VIO1Ce2obCjDywAGT8q2+FRzBgHHdqiB+XJyiWQTTxJE2CNsn9PQGs Xnj0deRNlUYyiAeb5WgI18E+z1j+D7toSToF/g8QXkPDtqh3qfSnlbem+WgF00jUSfLd L5yn58Qqmd4u2JUd8IWtUaY1dgEhO7ekAs+aEpOVXMjh9XOon0HQrnXRFaQVODW1mgfO QAJ2Zb5zzgBp50hDsnOyQ2mRGbnQNLtjeK/Qr6OT1U9a56gMl2JiCGGABNRXAzec27ux 9E8w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=5CbuzJn61hBLc+FY8dWMDM+0yvJ0dAh227GS03ZS2Y4=; b=SG08MD5ZS56VLRMwAvi25dL1V2q9LBeekhz3MKjLLkYQF0CjifJ89LKi+aEE8aBJfa 54Ac9eu5z1/rc0UX5hXJnUoBKmOAwCsgKS6WSUwzM07Vuc9hnQUMuKUBOJcnT3sCofY2 fnKRmS1Q4/RX0S9bAqKj6gBXjdPDdLJOsPYYsEaWFkYZ6t/fHWf1sVaCdPH4xw6UcF/W 7yFgmimCHBp9aJ93Olr7GPsfspTGB1PCDCP3SUDNY65Eb/19+9o7CocK3K9zqaiyG4Qz h2f5tPfC2v+RaxszuLAOC9zBmnrmRaRrBKBG29dvcHy9gXeN0ZyYVMmnGPMsjOeNUNFP pd/w== X-Gm-Message-State: AOAM532kahNiSjBkLKyyjwMTDaolzrJX9cSHXlP6E61F87G3BdkAZ/Om /jDddKlqjT7jz0x9OisvHeO08JST2n0I5w== X-Google-Smtp-Source: ABdhPJwBpYf3THNTwwgwGtww+qAoQhIgAxk45E1l8OMgF4w2YyxZOZHoE7gbh+cv63nLeyDkxAu68w== X-Received: by 2002:a17:902:b10b:b029:d1:e5e7:bdf8 with SMTP id q11-20020a170902b10bb02900d1e5e7bdf8mr2254153plr.43.1600910698661; Wed, 23 Sep 2020 18:24:58 -0700 (PDT) Received: from localhost.localdomain ([71.212.141.89]) by smtp.gmail.com with ESMTPSA id k27sm938432pgm.29.2020.09.23.18.24.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Sep 2020 18:24:57 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH 3/8] softfloat: Tidy a * b + inf return Date: Wed, 23 Sep 2020 18:24:48 -0700 Message-Id: <20200924012453.659757-4-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200924012453.659757-1-richard.henderson@linaro.org> References: <20200924012453.659757-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::632; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x632.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=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: , Cc: bharata@linux.ibm.com, alex.bennee@linaro.org, david@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" No reason to set values in 'a', when we already have float_class_inf in 'c', and can flip that sign. Signed-off-by: Richard Henderson Reviewed-by: David Hildenbrand --- fpu/softfloat.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fpu/softfloat.c b/fpu/softfloat.c index 67cfa0fd82..9db55d2b11 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -1380,9 +1380,8 @@ static FloatParts muladd_floats(FloatParts a, FloatParts b, FloatParts c, s->float_exception_flags |= float_flag_invalid; return parts_default_nan(s); } else { - a.cls = float_class_inf; - a.sign = c.sign ^ sign_flip; - return a; + c.sign ^= sign_flip; + return c; } }