From nobody Thu May 8 08:30:50 2025
Delivered-To: importer@patchew.org
Authentication-Results: mx.zohomail.com;
dkim=pass;
spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as
permitted sender)
smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org;
dmarc=pass(p=none dis=none) header.from=linaro.org
ARC-Seal: i=1; a=rsa-sha256; t=1733454881; cv=none;
d=zohomail.com; s=zohoarc;
b=Z4OhvAak5we3be/uWDSfOjr8tS3R9+AhvlZtLnVdLcw32hioxjyJEnom3VDH93vs7vPhJTOb9ktHcHDXFwifZ0X7Tt8TkO9oHZDpxhZwz5VjhNtCuWPkycUtIiGughRTGkMtQT95avyrOY20dCfoiBCuGR7Y/JQJIofN1SQbaR8=
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com;
s=zohoarc;
t=1733454881;
h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:Subject:To:To:Message-Id:Reply-To;
bh=jWsAgdjbqze/KpwUsly9HuM39GzG0bcUuYjHr9574Rw=;
b=m8jupJ0O6M8fM6y29/uZBfINtu4ffWQS/3FljSr9zlJ++y4NgmFAQXiXAUHfTXq6o3lyqnFkyzhhpCb9cNTVP6BvVoS3UaeRYMg+5pt1oK2FnNKnWU2MrTawjAjf/rPfsv5Aw0PFAEjCyo1r2SG8Elh8AKRQkMdeYMPRt0WYOuk=
ARC-Authentication-Results: i=1; mx.zohomail.com;
dkim=pass;
spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as
permitted sender)
smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org;
dmarc=pass header.from=<richard.henderson@linaro.org> (p=none dis=none)
Return-Path: <qemu-devel-bounces+importer=patchew.org@nongnu.org>
Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by
mx.zohomail.com
with SMTPS id 1733454880963635.8783804551927;
Thu, 5 Dec 2024 19:14:40 -0800 (PST)
Received: from localhost ([::1] helo=lists1p.gnu.org)
by lists.gnu.org with esmtp (Exim 4.90_1)
(envelope-from <qemu-devel-bounces@nongnu.org>)
id 1tJOnb-0002ZT-Ql; Thu, 05 Dec 2024 22:14:35 -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 <richard.henderson@linaro.org>)
id 1tJOnZ-0002Qr-Oc
for qemu-devel@nongnu.org; Thu, 05 Dec 2024 22:14:33 -0500
Received: from mail-oo1-xc32.google.com ([2607:f8b0:4864:20::c32])
by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)
(Exim 4.90_1) (envelope-from <richard.henderson@linaro.org>)
id 1tJOnX-0004b8-VR
for qemu-devel@nongnu.org; Thu, 05 Dec 2024 22:14:33 -0500
Received: by mail-oo1-xc32.google.com with SMTP id
006d021491bc7-5f1f1da0c8eso484478eaf.1
for <qemu-devel@nongnu.org>; Thu, 05 Dec 2024 19:14:31 -0800 (PST)
Received: from localhost.localdomain (fixed-187-189-51-143.totalplay.net.
[187.189.51.143]) by smtp.gmail.com with ESMTPSA id
006d021491bc7-5f2793249e8sm548936eaf.39.2024.12.05.19.14.29
(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);
Thu, 05 Dec 2024 19:14:30 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=linaro.org; s=google; t=1733454870; x=1734059670; darn=nongnu.org;
h=content-transfer-encoding:mime-version:message-id:date:subject:cc
:to:from:from:to:cc:subject:date:message-id:reply-to;
bh=jWsAgdjbqze/KpwUsly9HuM39GzG0bcUuYjHr9574Rw=;
b=OYNiq7SvbKZWxL05Lw2aSvNRcoLZOYYyprq3a+1u9GDeGVGyr4OeKAbEbgo36eqY53
szmO4Yc/X0i5e8kelSEQDaaU1o5xIR4lD8BmEMJIhPTrk/K6WdKLuXs+RinK+YIRXPsu
86Q+FQcTDB4llrtFQs1F5EuWYfkbmi6YIrPL7Zo2EThsL610b4z1qhru8zbZMTnCNmJD
Oe3LaiHDKgJ6t1nTiVPG9NtsgexMRdwC7tobEYwIyp3J2wuuVJHFn6yqxvBwep6rRlpD
zVV9yvZkc8ZTsG9ejp1iqvljtY1h7GG59sObDIu0XAdKYP8Qr1iHthGJ29LUtsmptngu
0a0g==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=1e100.net; s=20230601; t=1733454870; x=1734059670;
h=content-transfer-encoding:mime-version:message-id:date:subject:cc
:to:from:x-gm-message-state:from:to:cc:subject:date:message-id
:reply-to;
bh=jWsAgdjbqze/KpwUsly9HuM39GzG0bcUuYjHr9574Rw=;
b=URVMipgrofAM84jYaJUwzDHe8+x1KebfjNbMHxoutKcny2qSmuUnTI12DhROetjG4j
WFTp4T/nkFDjBDQIwgmmIavTXC4aAbphqcMi3dlkOzAjwmoy5VKHu+XCPxwLExq5vKAR
+cGB7L/vMtAbsZc28CugnViAcKCaBDXbTq1+KYrDqbrD8/qfMm7++ha1P34Wq+b3znA2
SVOdYnBGBC7alRFE9n3IjdoGvHsaIuG+rDl1IH6hNz2I9sipfopqzNoreguRFbzZ98ka
fgEpfTTp1hp9OhFo+k9+afCO+ifNyax+W10G9Zm0ShACL9eJgoMBqs18tMysEcrwCkCn
SXWQ==
X-Gm-Message-State: AOJu0YzFVCyFCyQggL6tX7cS86Zkk8tdZUlnQR5OZCiM5srYifsBjfrV
DeHBMblXC8i87echO95lNB0BqPjGMH9o3u5JQe9AiKdEALSJ9TvcquR0IobLfBjlTJlSjl+sSxz
yzJmwih3y
X-Gm-Gg: ASbGncuT1TsdIjsnso5UW+1mzn94X0rAlKt8wUClY18aD1+kwZZuKjhs0Om9EkqrVXz
Vig7IfBAF8EosQC9aQf5GC6bfCb0VwbV9C4GmE3OXiZ6hNisEqgaPy7tpbHwun8pYEfJ5kJOW7n
P7MLR8gPKcGl+7DNFsHK6RBUybHlvrh6AhTgx0gJcnIR8SLGaA431uwJ9PsphZKnV3VnufDte0I
7KouQLzHzPPx8pFrjUScgBZ40zNQjLQVuPrn4IFnvq9AWEPTMDN4q43vTbJ6j3G1xL/387X9W9c
uZcM3XrMZKSiCZU2FM7BknNqQhyhfjtUkK/p
X-Google-Smtp-Source:
AGHT+IHarJXdcrsJKaw/JLAoVlmBlTR6TWMJLrb6L4fqBPiE+eq5npoutdY9ZNTJyu4dx2mP7DaLzQ==
X-Received: by 2002:a05:6820:607:b0:5f1:e3d1:b994 with SMTP id
006d021491bc7-5f286b74c1fmr1030055eaf.0.1733454870582;
Thu, 05 Dec 2024 19:14:30 -0800 (PST)
From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: qemu-arm@nongnu.org
Subject: [PATCH] target/arm: Use float_round_to_odd in helper_fcvtx_f64_to_f32
Date: Thu, 5 Dec 2024 21:14:28 -0600
Message-ID: <20241206031428.78634-1-richard.henderson@linaro.org>
X-Mailer: git-send-email 2.43.0
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=lists.gnu.org;
Received-SPF: pass client-ip=2607:f8b0:4864:20::c32;
envelope-from=richard.henderson@linaro.org; helo=mail-oo1-xc32.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-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <https://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
<mailto:qemu-devel-request@nongnu.org?subject=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: 1733454882639116600
Content-Type: text/plain; charset="utf-8"
Softfloat has native support for round-to-odd. Use it.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/arm/tcg/helper-a64.c | 18 ++++--------------
1 file changed, 4 insertions(+), 14 deletions(-)
diff --git a/target/arm/tcg/helper-a64.c b/target/arm/tcg/helper-a64.c
index 1daf3f27c0..ff48bac1a8 100644
--- a/target/arm/tcg/helper-a64.c
+++ b/target/arm/tcg/helper-a64.c
@@ -386,23 +386,13 @@ float64 HELPER(frecpx_f64)(float64 a, float_status *f=
pst)
=20
float32 HELPER(fcvtx_f64_to_f32)(float64 a, CPUARMState *env)
{
- /* Von Neumann rounding is implemented by using round-to-zero
- * and then setting the LSB of the result if Inexact was raised.
- */
float32 r;
float_status *fpst =3D &env->vfp.fp_status;
- float_status tstat =3D *fpst;
- int exflags;
+ int old =3D get_float_rounding_mode(fpst);
=20
- set_float_rounding_mode(float_round_to_zero, &tstat);
- set_float_exception_flags(0, &tstat);
- r =3D float64_to_float32(a, &tstat);
- exflags =3D get_float_exception_flags(&tstat);
- if (exflags & float_flag_inexact) {
- r =3D make_float32(float32_val(r) | 1);
- }
- exflags |=3D get_float_exception_flags(fpst);
- set_float_exception_flags(exflags, fpst);
+ set_float_rounding_mode(float_round_to_odd, fpst);
+ r =3D float64_to_float32(a, fpst);
+ set_float_rounding_mode(old, fpst);
return r;
}
=20
--=20
2.43.0