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 C887A385AF9B; Tue, 18 Jul 2023 06:29:59 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org C887A385AF9B 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 Received: from pps.filterd (m0247480.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 36I6SDtZ000707; Tue, 18 Jul 2023 06:29:58 GMT Received: from mxout21.s.uw.edu (mxout21.s.uw.edu [140.142.32.139]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3rwc68jhfw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 18 Jul 2023 06:29:58 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.54]) by mxout21.s.uw.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 36I6TXhQ014528 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 17 Jul 2023 23:29:33 -0700 X-Auth-Received: from localhost.localdomain ([10.154.74.234]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW19.10) with ESMTPSA id 36I6Rko8019954 (version=TLSv1.2 cipher=DHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Mon, 17 Jul 2023 23:29:33 -0700 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 v3 3/3] libstdc++: Optimize is_fundamental performance by __is_arithmetic built-in Date: Mon, 17 Jul 2023 23:27:45 -0700 Message-ID: <20230718062745.29470-3-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230718062745.29470-1-kmatsui@gcc.gnu.org> References: <20230715045519.50684-1-kmatsui@gcc.gnu.org> <20230718062745.29470-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: Cq9ev_kLKIWXUMsAe8RII8J9e2Bwku8y X-Proofpoint-GUID: Cq9ev_kLKIWXUMsAe8RII8J9e2Bwku8y X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-17_15,2023-07-13_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=633 clxscore=1034 priorityscore=1501 bulkscore=0 lowpriorityscore=0 suspectscore=0 mlxscore=0 malwarescore=0 impostorscore=0 spamscore=0 phishscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307180058 X-Spam-Status: No, score=-13.0 required=5.0 tests=BAYES_00,GIT_PATCH_0,JMQ_SPF_NEUTRAL,KAM_DMARC_STATUS,RCVD_IN_DNSWL_LOW,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 performance of the is_fundamental trait by dispatching to the new __is_arithmetic built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_fundamental_v): Use __is_arithmetic built-in trait. (is_fundamental): Likewise. Optimize the original implementation. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 7ebbe04c77b..cf24de2fcac 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -668,11 +668,21 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION #endif /// is_fundamental +#if __has_builtin(__is_arithmetic) + template + struct is_fundamental + : public __bool_constant<__is_arithmetic(_Tp) + || is_void<_Tp>::value + || is_null_pointer<_Tp>::value> + { }; +#else template struct is_fundamental - : public __or_, is_void<_Tp>, - is_null_pointer<_Tp>>::type + : public __bool_constant::value + || is_void<_Tp>::value + || is_null_pointer<_Tp>::value> { }; +#endif /// is_object template @@ -3209,13 +3219,16 @@ template #if __has_builtin(__is_arithmetic) template inline constexpr bool is_arithmetic_v = __is_arithmetic(_Tp); +template + inline constexpr bool is_fundamental_v + = __is_arithmetic(_Tp) || is_void_v<_Tp> || is_null_pointer_v<_Tp>; #else template inline constexpr bool is_arithmetic_v = is_arithmetic<_Tp>::value; -#endif - template inline constexpr bool is_fundamental_v = is_fundamental<_Tp>::value; +#endif + template inline constexpr bool is_object_v = is_object<_Tp>::value; template -- 2.41.0