From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-00641c01.pphosted.com (mx0a-00641c01.pphosted.com [205.220.165.146]) by sourceware.org (Postfix) with ESMTPS id 0696D385828E; Sat, 8 Jul 2023 05:13:22 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 0696D385828E 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 (m0247475.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3685D2MB018583; Sat, 8 Jul 2023 05:13:22 GMT Received: from mxout26.s.uw.edu (mxout26.s.uw.edu [140.142.234.176]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3rq00ug7db-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 08 Jul 2023 05:13:21 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.54]) by mxout26.s.uw.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 3685DBbv011692 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 7 Jul 2023 22:13:11 -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 3685Bg4g004530 (version=TLSv1.2 cipher=DHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Fri, 7 Jul 2023 22:13:11 -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 v8 2/6] libstdc++: use new built-in trait __is_reference for std::is_reference Date: Fri, 7 Jul 2023 22:08:09 -0700 Message-ID: <20230708051137.63707-3-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230708051137.63707-1-kmatsui@gcc.gnu.org> References: <20230708051137.63707-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: XV2WyNi3oRyuQ9onNwt-dIq-0oTD3hg- X-Proofpoint-GUID: XV2WyNi3oRyuQ9onNwt-dIq-0oTD3hg- 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=2023-07-08_02,2023-07-06_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 malwarescore=0 spamscore=0 phishscore=0 lowpriorityscore=0 bulkscore=0 mlxlogscore=968 clxscore=1034 priorityscore=1501 mlxscore=0 adultscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2307080045 X-Spam-Status: No, score=-12.5 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 gets std::is_reference to dispatch to new built-in trait __is_reference. libstdc++-v3/ChangeLog: * include/std/type_traits (is_reference): Use __is_reference built-in trait. (is_reference_v): Likewise. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 0e7a9c9c7f3..2a14df7e5f9 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -639,6 +639,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION // Composite type categories. /// is_reference +#if __has_builtin(__is_reference) + template + struct is_reference + : public __bool_constant<__is_reference(_Tp)> + { }; +#else template struct is_reference : public false_type @@ -653,6 +659,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct is_reference<_Tp&&> : public true_type { }; +#endif /// is_arithmetic template @@ -3192,12 +3199,19 @@ template inline constexpr bool is_class_v = __is_class(_Tp); template inline constexpr bool is_function_v = is_function<_Tp>::value; + +#if __has_builtin(__is_reference) +template + inline constexpr bool is_reference_v = __is_reference(_Tp); +#else template inline constexpr bool is_reference_v = false; template inline constexpr bool is_reference_v<_Tp&> = true; template inline constexpr bool is_reference_v<_Tp&&> = true; +#endif + template inline constexpr bool is_arithmetic_v = is_arithmetic<_Tp>::value; template -- 2.41.0