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 DD2023882654; Thu, 13 Jun 2024 13:40:03 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org DD2023882654 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 DD2023882654 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=1718286005; cv=none; b=D5IzILzPVtgE9HznbGbsmwriNwtEQBj8AdQoRgxXxJLkhx5327WqGp50NvrcuUW9PhnN4OrjSNdtDOJfnd+f6YhfBCpzoWxw2ztUsPsrxMzWVGM+OIjpwwucOs+US19CFSMMbKQiCybAuKIlqJWdALHiKyD79AKaK73Fkl6MoGQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1718286005; c=relaxed/simple; bh=7tzCF9Fbv0FTXUWuQ12f4hZowU3EGnGyMYZg8Mx0kQI=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=adBYrbaRtVzQAFHGLGu1eY+wvHKOhm8+cbC8b2vQIZ1o9VD/1ysSCt83VsX2Aod2hVgJBzDhUDCqLne8e7+E+TyqokmdAbBzY8SiSu6kq3b2mWdTfzcFf5m9GBo1CXiq0gOH+oco1cGFTi1GAPNpPuC7jbk1KDELDfRUrZqc5i8= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from pps.filterd (m0247476.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 45DDa6b1017453; Thu, 13 Jun 2024 13:40:03 GMT Received: from mxout24.cac.washington.edu (mxout24.cac.washington.edu [140.142.234.158]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3yqyj3h1n9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 13 Jun 2024 13:40:03 +0000 (GMT) Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.132]) by mxout24.cac.washington.edu (8.14.4+UW20.07/8.14.4+UW24.02) with ESMTP id 45DDdVZQ003530 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 13 Jun 2024 06:39:31 -0700 X-Auth-Received: from ken-20xw00qgus.dhcp4.washington.edu ([10.154.74.241]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW24.02) with ESMTPSA id 45DDdVkU004307 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 13 Jun 2024 06:39:31 -0700 X-UW-Orig-Sender: kmatsui@smtp.washington.edu From: Ken Matsui To: libstdc++@gcc.gnu.org Cc: Ken Matsui Subject: [PATCH v27 3/3] libstdc++: Optimize std::add_rvalue_reference compilation performance Date: Thu, 13 Jun 2024 06:39:27 -0700 Message-ID: <20240613133927.374392-3-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240613133927.374392-1-kmatsui@gcc.gnu.org> References: <20240511090130.248174-1-kmatsui@gcc.gnu.org> <20240613133927.374392-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: aBMtb6JNGwHAYFZqqWZVGGklpE8dkSHB X-Proofpoint-GUID: aBMtb6JNGwHAYFZqqWZVGGklpE8dkSHB X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-06-13_05,2024-06-13_02,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 adultscore=0 spamscore=0 lowpriorityscore=0 clxscore=1034 impostorscore=0 phishscore=0 mlxscore=0 suspectscore=0 mlxlogscore=494 priorityscore=1501 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2405170001 definitions=main-2406130099 X-Spam-Status: No, score=-13.3 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 compilation performance of std::add_rvalue_reference by dispatching to the new __add_rvalue_reference built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (__add_rval_ref_t): Use __add_rvalue_reference built-in trait. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 79983ea980a..a31de2ee4ab 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -1184,6 +1184,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION }; /// @cond undocumented +#if _GLIBCXX_USE_BUILTIN_TRAIT(__add_rvalue_reference) + template + using __add_rval_ref_t = __add_rvalue_reference(_Tp); +#else template struct __add_rvalue_reference_helper { using type = _Tp; }; @@ -1194,6 +1198,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template using __add_rval_ref_t = typename __add_rvalue_reference_helper<_Tp>::type; +#endif /// @endcond /// is_move_constructible -- 2.45.1