From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-00641c01.pphosted.com (mx0b-00641c01.pphosted.com [205.220.177.146]) by sourceware.org (Postfix) with ESMTPS id 5DA00384AB63; Thu, 2 May 2024 18:45:37 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 5DA00384AB63 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=gcc.gnu.org Authentication-Results: sourceware.org; spf=fail smtp.mailfrom=gcc.gnu.org ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 5DA00384AB63 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=205.220.177.146 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1714675540; cv=none; b=ObJUxpYvXKdTY7m2sKbtmO60JmzmieHtPg8jrbYG1vA7aH8FwfjCz9VN2NnBzQ1lz0mju1jOnEHnl9zbnKOEZPDV77ZzwXX6/ewJUcrYw3gCR6H9mTIKKUDXhmVGJs1YsEjLEqswml86mrIxPFMP/66Qdea5lFmo5lBgv/HObC4= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1714675540; c=relaxed/simple; bh=FK3fLNe7YS8k3ksVXMzBB6AQMQOOmssfAt5I5oaD8Qg=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=WMhiFfLmOP71RbqmjIdy2LBuNq3XsE9czUlnwWiFNaXdq1fiX8cT7jxWZY8fyI4sVZenLL2C3oxwFVZlDNz3HlK019Le73LF7jR3inCDtenaAd/B0eamZCLQ2V8zBYtUD6vLwdJ+DLTEK7NnN++2j6yNjdZlwaJH6NThMCwk1DU= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from pps.filterd (m0247480.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 442IeXcJ009918; Thu, 2 May 2024 18:45:37 GMT Received: from mxout22.s.uw.edu (mxout22.s.uw.edu [128.95.242.222]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3xvf558ryt-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 02 May 2024 18:45:36 +0000 (GMT) Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.132]) by mxout22.s.uw.edu (8.14.4+UW20.07/8.14.4+UW24.02) with ESMTP id 442IjVhJ030593 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 2 May 2024 11:45:31 -0700 X-Auth-Received: from ken-20xw00qgus.dhcp4.washington.edu ([10.154.75.239]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW24.02) with ESMTPSA id 442IjVwr032283 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 2 May 2024 11:45:31 -0700 X-UW-Orig-Sender: kmatsui@smtp.washington.edu From: Ken Matsui To: gcc-patches@gcc.gnu.org Cc: libstdc++@gcc.gnu.org, jason@redhat.com, Ken Matsui Subject: [PATCH v17 04/26] libstdc++: Optimize std::is_volatile compilation performance Date: Thu, 2 May 2024 11:42:19 -0700 Message-ID: <20240502184529.97337-5-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240502184529.97337-1-kmatsui@gcc.gnu.org> References: <20240502161614.3705912-1-kmatsui@gcc.gnu.org> <20240502184529.97337-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: NAUuTD9uEVhyxDap8Gpv4RimcSyW6GaZ X-Proofpoint-ORIG-GUID: NAUuTD9uEVhyxDap8Gpv4RimcSyW6GaZ X-outbound-smtp: 1 x-header: uw-relay-non-domains X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1011,Hydra:6.0.650,FMLib:17.11.176.26 definitions=2024-05-02_10,2024-05-02_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 mlxscore=0 priorityscore=1501 clxscore=1034 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 mlxlogscore=761 adultscore=0 lowpriorityscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2404010003 definitions=main-2405020125 X-Spam-Status: No, score=-13.2 required=5.0 tests=BAYES_00,GIT_PATCH_0,JMQ_SPF_NEUTRAL,KAM_DMARC_STATUS,RCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NEUTRAL,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: This patch optimizes the compilation performance of std::is_volatile by dispatching to the new __is_volatile built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_volatile): Use __is_volatile built-in trait. (is_volatile_v): Likewise. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 8df0cf3ac3b..748fa186881 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -851,6 +851,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION #endif /// is_volatile +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_volatile) + template + struct is_volatile + : public __bool_constant<__is_volatile(_Tp)> + { }; +#else template struct is_volatile : public false_type { }; @@ -858,6 +864,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template struct is_volatile<_Tp volatile> : public true_type { }; +#endif /// is_trivial template @@ -3360,10 +3367,15 @@ template inline constexpr bool is_function_v<_Tp&&> = false; #endif +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_volatile) +template + inline constexpr bool is_volatile_v = __is_volatile(_Tp); +#else template inline constexpr bool is_volatile_v = false; template inline constexpr bool is_volatile_v = true; +#endif template inline constexpr bool is_trivial_v = __is_trivial(_Tp); -- 2.44.0