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 83E63384DED2; Thu, 15 Feb 2024 12:48:51 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 83E63384DED2 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 83E63384DED2 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=1708001342; cv=none; b=gSAr+Zg//lC+aMYzsC7dd//KkzAsffx61CDDIOYw1p3FrY2kF8pXc2wT6GS1cE63E5Auv/B7WBg4vI1svqQwrZGealD15U2qJ20jjxrH9U1Dh2HhNY1aas0UezaIBUjN+5vbeH9fXoaxqCFGbii4c0YkXOemk03DFU/SJ1MRFuU= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1708001342; c=relaxed/simple; bh=Lvl+FT8IvryzLxkGcHzhKpdBdzMobGciTXizVO8O2UQ=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=hLa26jGU2OXqCj9C4BAWzf9yYMB6Fp8NZFylf99hMmBtMOI+eQVdLeA1YOakQ1aYV/Un97RHBiZ3XwoquFJmOkFqal9MLdBSZaQMC8tbN6sQhZnJ/S5zzMSJvuhYGZySMk82EquAG4By+sXeGrWaoc6l2G2iKCcVYNiNdUBADEo= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from pps.filterd (m0247479.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 41FCdUXE010129; Thu, 15 Feb 2024 12:48:51 GMT Received: from mxout21.s.uw.edu (mxout21.s.uw.edu [140.142.32.139]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3w939jnkth-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 15 Feb 2024 12:48:50 +0000 Received: from smtp.washington.edu (smtp.washington.edu [140.142.234.157]) by mxout21.s.uw.edu (8.14.4+UW20.07/8.14.4+UW24.02) with ESMTP id 41FCmia1022593 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 15 Feb 2024 04:48:44 -0800 X-Auth-Received: from kmatsui-ThinkPad-X1-Carbon-Gen-9.dhcp4.washington.edu ([10.154.74.143]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW24.02) with ESMTPSA id 41FCmbO3021397 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 15 Feb 2024 04:48:44 -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 v4 10/12] libstdc++: Optimize std::add_rvalue_reference compilation performance Date: Thu, 15 Feb 2024 04:48:22 -0800 Message-ID: <20240215124824.310810-10-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240215045258.3025806-1-kmatsui@gcc.gnu.org> References: <20240215045258.3025806-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: eDZCL7W09PPsqMn2g9vuR2OEyTyWAKgP X-Proofpoint-GUID: eDZCL7W09PPsqMn2g9vuR2OEyTyWAKgP X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-15_12,2024-02-14_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 lowpriorityscore=0 phishscore=0 priorityscore=1501 mlxscore=0 adultscore=0 clxscore=1034 malwarescore=0 impostorscore=0 mlxlogscore=765 bulkscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402150102 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,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_rvalue_reference): Use __add_rvalue_reference built-in trait. (__add_rvalue_reference_helper): 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 1f4e6db72f4..219d36fabba 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -1157,6 +1157,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION }; /// @cond undocumented +#if _GLIBCXX_USE_BUILTIN_TRAIT(__add_rvalue_reference) + template + struct __add_rvalue_reference_helper + { using type = __add_rvalue_reference(_Tp); }; +#else template struct __add_rvalue_reference_helper { using type = _Tp; }; @@ -1164,6 +1169,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template struct __add_rvalue_reference_helper<_Tp, __void_t<_Tp&&>> { using type = _Tp&&; }; +#endif template using __add_rval_ref_t = typename __add_rvalue_reference_helper<_Tp>::type; @@ -1720,9 +1726,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION #endif /// add_rvalue_reference +#if _GLIBCXX_USE_BUILTIN_TRAIT(__add_rvalue_reference) + template + struct add_rvalue_reference + { using type = __add_rvalue_reference(_Tp); }; +#else template struct add_rvalue_reference { using type = __add_rval_ref_t<_Tp>; }; +#endif #if __cplusplus > 201103L /// Alias template for remove_reference -- 2.43.0