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 E4A583858C29; Thu, 7 Dec 2023 05:42:03 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org E4A583858C29 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 E4A583858C29 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=1701927725; cv=none; b=b/ZL6wmz/WbTHMpVaL29yCBl+bCIpETTfcvVoH91nq101AmJl9onb9KmMVwwh4NgvCQ2iqKr9jYwhiTJQ0njp0Zayg9DZX0VYXMXGQNu1luMLjR2C/rl4GO1kBZBjI3fLlleUzYxe/efM6lj6YbdJ25Ig+5ft8cO2C/e3prny3U= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1701927725; c=relaxed/simple; bh=lJAtnC4L6cZ5qiADLRNu3O2bnpoIEA20TsGZscELKZ0=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=Br0HHKmUcN5lT6nJonHy5+REY1k+YKXiUhcJJvSFJdyvOmhK9fFsf0BuRu2Be2VE1BvpPX1bm6lmfce8IgmIp1XdSHu2lGkFvHTIEQlTDRtMRxjLHqjvCC3gt0eHhdgWt/r7gZambsg+HreIp59z0ekm/oQfCq8PrBa3mg6mT1w= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from pps.filterd (m0247476.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3B75Y5Px010448; Thu, 7 Dec 2023 05:42:03 GMT Received: from mxout24.cac.washington.edu (mxout24.cac.washington.edu [140.142.234.158]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3uu0y1u550-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 07 Dec 2023 05:42:03 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.54]) by mxout24.cac.washington.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 3B75fsIM003817 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 6 Dec 2023 21:41:54 -0800 X-Auth-Received: from kmatsui-ThinkPad-X1-Carbon-Gen-9.dhcp4.washington.edu ([10.154.75.142]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW19.10) with ESMTPSA id 3B75adQ6020981 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 6 Dec 2023 21:41:54 -0800 X-UW-Orig-Sender: kmatsui@smtp.washington.edu From: Ken Matsui To: gcc-patches@gcc.gnu.org Cc: libstdc++@gcc.gnu.org, Ken Matsui Subject: [PATCH v26 05/23] libstdc++: Optimize std::is_array compilation performance Date: Wed, 6 Dec 2023 21:33:00 -0800 Message-ID: <20231207053633.1001720-6-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231207053633.1001720-1-kmatsui@gcc.gnu.org> References: <20231024020424.699427-1-kmatsui@gcc.gnu.org> <20231207053633.1001720-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: USbUk3usQvMJOzsCwtiMNMPbfiURUatt X-Proofpoint-ORIG-GUID: USbUk3usQvMJOzsCwtiMNMPbfiURUatt X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-06_20,2023-12-06_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 mlxscore=0 priorityscore=1501 bulkscore=0 mlxlogscore=386 impostorscore=0 suspectscore=0 adultscore=0 phishscore=0 malwarescore=0 lowpriorityscore=0 clxscore=1034 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2312060160 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,T_SCC_BODY_TEXT_LINE 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_array by dispatching to the new __is_array built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_array): Use __is_array built-in trait. (is_array_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 677cd934b94..64f9d67fe29 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -523,6 +523,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { }; /// is_array +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_array) + template + struct is_array + : public __bool_constant<__is_array(_Tp)> + { }; +#else template struct is_array : public false_type { }; @@ -534,6 +540,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template struct is_array<_Tp[]> : public true_type { }; +#endif template struct __is_pointer_helper @@ -3169,12 +3176,17 @@ template template inline constexpr bool is_floating_point_v = is_floating_point<_Tp>::value; +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_array) +template + inline constexpr bool is_array_v = __is_array(_Tp); +#else template inline constexpr bool is_array_v = false; template inline constexpr bool is_array_v<_Tp[]> = true; template inline constexpr bool is_array_v<_Tp[_Num]> = true; +#endif template inline constexpr bool is_pointer_v = is_pointer<_Tp>::value; -- 2.43.0