From patchwork Wed Dec 11 16:19:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Maydell X-Patchwork-Id: 849268 Delivered-To: patch@linaro.org Received: by 2002:a05:6000:2c4:b0:385:e875:8a9e with SMTP id o4csp426342wry; Wed, 11 Dec 2024 08:44:32 -0800 (PST) X-Forwarded-Encrypted: i=2; AJvYcCXp+SV1AcfQVFCAfoybtYkQZIy3pMJIG0Hrvs+a2WiFqyf42pozvRoS4MAwWy/iUNuPpHjffQ==@linaro.org X-Google-Smtp-Source: AGHT+IE2BmKx4+0I9mhZXk453RL6kGgqfwO7SxF5Gud3AmAHEjdXVZgnaWu9dED4gJl14Ucb2n3c X-Received: by 2002:a05:620a:6507:b0:7b1:11d9:446e with SMTP id af79cd13be357-7b6eb436896mr600091985a.3.1733935471697; Wed, 11 Dec 2024 08:44:31 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1733935471; cv=none; d=google.com; s=arc-20240605; b=bMQLYfrQwRVlnD8LWEvc4ey/D17+2nBYV6gX+VtA87Kz8tROPAENH1LTWzvhgBV5gh 1gZPeTY3bcaM6L6/dkkQI0ZcxAzMaoLyet4IgC6PV9ai9fKFKQxEkGUfk0I0sdZHtLK4 KEE1AXd1dKPQQLqRpYqbuJJAx+L0+Jc0nHKNw4LodT2KU7QpUCCQITnEvUe8iwfq/0D3 AQfL/ri3zjSPT4cTOi42gF82sIurKv+Kt/3yhjITEGSo6eyFcsHNHa8M3A/lITaGh15E ELwFOWQi8+KgcPprhRByTH4qWIUry3ZTXQgD61flltiDB2zWuDOgxw58zQ4pjPFszVly 163g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20240605; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:to:from :dkim-signature; bh=Lo7VMCHiiH9lz9IaE5gLakal324n4TYjmC+cVkhARM4=; fh=PnYt+qEB9tAfMKoqBm2xjKOFpYyFFGPudh5cVIoieJM=; b=ltd9x4HUN4RxcE5/ZiF4YF6vAbz7a/1ZktDFn43bODuRun+HFIeVUMzHl8I8DmSqMh qV4DZlig646xXhTkIonbiLGXC3O+TZSbADlwDpztYfELxrY3RT0ShvxcPgaZOTkmcyrl 6+tMroMjuUZx9tqIdHTlE6DTCqVq4/17+QqUYfouznzU9bR6kgbeZprQgFlE4js3Kjf3 5bOIx7BROHXAQv03rvahtia5D/TzdJEupoHLdhHOl3OUJX5kvvfdaOAKbbJ5H9g0W6wz WpW/RXiY0ejq6OV5OBIkgLRSR/fCkfdz1cWIjEnpo80kK/3UXBrgmnWxcoE63CCSl+a3 u04A==; dara=google.com ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=VWuzXDw3; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org; dara=neutral header.i=@linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id af79cd13be357-7b6f078431dsi92601585a.294.2024.12.11.08.44.31 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Wed, 11 Dec 2024 08:44:31 -0800 (PST) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=VWuzXDw3; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org; dara=neutral header.i=@linaro.org Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tLPS7-0000JV-6N; Wed, 11 Dec 2024 11:20:43 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tLPS2-0000He-J6 for qemu-devel@nongnu.org; Wed, 11 Dec 2024 11:20:38 -0500 Received: from mail-wm1-x335.google.com ([2a00:1450:4864:20::335]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1tLPS1-0007iu-0R for qemu-devel@nongnu.org; Wed, 11 Dec 2024 11:20:38 -0500 Received: by mail-wm1-x335.google.com with SMTP id 5b1f17b1804b1-434a742481aso59513105e9.3 for ; Wed, 11 Dec 2024 08:20:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1733934035; x=1734538835; 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=Lo7VMCHiiH9lz9IaE5gLakal324n4TYjmC+cVkhARM4=; b=VWuzXDw3J372qF9uhZGF5RhgaW49DhFXExiWVsPIMFmha4VdXqspBQyfCjRBdvRlB7 8FQ3RhLkfYOeG3Utno5MrqadmrtUnXmD6csSH7tNDJKp8df8bw/poANClRdm/l+m5VU/ WMLzFfBFdWdfLu0NcrFve3WSxlXUGsUVD1cMpv+nGkTY4+iw0ldrnrwhGaFdRJKw1itL WxE9uSQr94OvbzlQwZ3CC0d28zxfENtEIADUYiY2zoRaVA0aT4NxJSMTKohc+uUktR7T 3pnmkSmi3+gbL5dAx4Lo21RfF60wPui3mCWV7ouWLJGYNC/zGawq67a+/vWWO27nNYPP M23A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1733934035; x=1734538835; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Lo7VMCHiiH9lz9IaE5gLakal324n4TYjmC+cVkhARM4=; b=oDpdW4VGwd03qWuHnR4PQFPaYU2CI8XJIFPBLT9bny0UeXlTRzsJ0WjJXVRkqbYqX/ d82A2kuwXxop8WGwjZDTx4R1v56WFfFjqzCOO2ouHK/i9nw4ZbvaXwrmh9/+MR5Y4Ctz /kFrR/6VpFUl7372Z7WOHHN4uVt2bAwWKyRZzL5zEy5B3d1vDnTPfm9AdwGrnP1fc3JM aAQVK1Xb206iebsGYGuBLQCccRl5VR14aJYv7Y4aVScNQye6RN1nWXK3+n/ZaQFHSOHI o2SPGmFPXDfwoXngyqZcho74i48VftKkZ34WX0HmLRBMqvqe4ZyLPZxcBGgGbhFxjza/ FULQ== X-Gm-Message-State: AOJu0YyzBOqWjp+0E5kRoroYDXKrT/MObCDYfOK3DjyHlaFvszDmpHkY GG75hWAizli45emRDWlRbzM1U5lSvYGBbAsskamLkJ6l1YyqlpYBUodumfwcF/GbM88ntA5QCAt 2 X-Gm-Gg: ASbGncv2a/MtN9h71jCAxDgN6dz7Lusd7LHO/+UCJ08QAILnblH7dq39XpfzeMEua3X Mh+ORB0DrVth3sSfCYJR5oWOwumSWw4R2aSIEjCW+yyYoz+ih2Sr9sCA03Zv9I6tQv4qtnBK7vf 8ldAqYsrhy8jweGcY4puKhg1IGlR4t9cqoSyJzP9aQQvRpyxDfJNdu4M7obilkgG+R0ffpvHhIt f22WrjPk0HD+1UyddXMqh5sJOcXeqZw/jiW6q/JiD/cuzuoq3sgAGU6/azf X-Received: by 2002:a05:600c:5116:b0:435:b064:7dce with SMTP id 5b1f17b1804b1-43622845ca2mr3219485e9.18.1733934035660; Wed, 11 Dec 2024 08:20:35 -0800 (PST) Received: from orth.archaic.org.uk (orth.archaic.org.uk. [2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-434f4dfdcdfsm121460595e9.39.2024.12.11.08.20.34 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Dec 2024 08:20:35 -0800 (PST) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 24/72] target/ppc: Set Float3NaNPropRule explicitly Date: Wed, 11 Dec 2024 16:19:16 +0000 Message-Id: <20241211162004.2795499-25-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241211162004.2795499-1-peter.maydell@linaro.org> References: <20241211162004.2795499-1-peter.maydell@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::335; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x335.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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org Set the Float3NaNPropRule explicitly for PPC, and remove the ifdef from pickNaNMulAdd(). Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20241202131347.498124-20-peter.maydell@linaro.org --- target/ppc/cpu_init.c | 8 ++++++++ fpu/softfloat-specialize.c.inc | 6 ------ 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c index f18908a643a..eb9d7b13701 100644 --- a/target/ppc/cpu_init.c +++ b/target/ppc/cpu_init.c @@ -7270,6 +7270,14 @@ static void ppc_cpu_reset_hold(Object *obj, ResetType type) */ set_float_2nan_prop_rule(float_2nan_prop_ab, &env->fp_status); set_float_2nan_prop_rule(float_2nan_prop_ab, &env->vec_status); + /* + * NaN propagation for fused multiply-add: + * if fRA is a NaN return it; otherwise if fRB is a NaN return it; + * otherwise return fRC. Note that muladd on PPC is (fRA * fRC) + frB + * whereas QEMU labels the operands as (a * b) + c. + */ + set_float_3nan_prop_rule(float_3nan_prop_acb, &env->fp_status); + set_float_3nan_prop_rule(float_3nan_prop_acb, &env->vec_status); /* * For PPC, the (inf,zero,qnan) case sets InvalidOp, but we prefer * to return an input NaN if we have one (ie c) rather than generating diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index d610f460026..173b9eadb57 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -511,12 +511,6 @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, } else { rule = float_3nan_prop_s_cab; } -#elif defined(TARGET_PPC) - /* - * If fRA is a NaN return it; otherwise if fRB is a NaN return it; - * otherwise return fRC. Note that muladd on PPC is (fRA * fRC) + frB - */ - rule = float_3nan_prop_acb; #elif defined(TARGET_S390X) rule = float_3nan_prop_s_abc; #elif defined(TARGET_SPARC)