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 D97B9385E020; Wed, 14 Feb 2024 13:53:26 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org D97B9385E020 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 D97B9385E020 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=205.220.165.146 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1707918813; cv=none; b=E2aF5J4OI58+PqViN7RUvxjyTxc+S6J7Qxw8xAA8oA9hOl6yVIQzEDaIpNefbO04cvJOQ/qfktjSNtLv5Zl6wCdzhgnqbhXCn9azdb0RvmpwPJgp6VbOmD9zkDd7kL14hEAWmiqp+NsDpmUet/v8oZYsvJsKe5HKVtJnHPCBC8Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1707918813; c=relaxed/simple; bh=mgSd9TEezsOin328Daikj7GhRV0O1ne8sDSsrKJn60A=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=K0+Xay02Q5WJ6m+5uAgzSLfMiBMMIzIvYaJZAIbZInN2B2FLy1D0pwaVXN1ae8HM6+crpWJ2tSEFQb2gvHjsINlb5KsjhvW2XEtubpHzDQFn5RpkWJv+clSZFi+Bf1zgkYE89JirU4dzG9EWTXlm0eKUQN9gkXDlBrfs/1Y8lzo= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from pps.filterd (m0247472.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 41EDbV8X017612; Wed, 14 Feb 2024 13:53:26 GMT Received: from mxout25.s.uw.edu (mxout25.s.uw.edu [140.142.234.175]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3w8kqqtr10-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Feb 2024 13:53:25 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.132]) by mxout25.s.uw.edu (8.14.4+UW20.07/8.14.4+UW24.02) with ESMTP id 41EDr2wo026085 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 14 Feb 2024 05:53:02 -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 41EDqxIo024820 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 14 Feb 2024 05:53:02 -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 v2 2/4] libstdc++: Optimize std::add_pointer compilation performance Date: Wed, 14 Feb 2024 05:52:50 -0800 Message-ID: <20240214135252.1416047-2-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240214135252.1416047-1-kmatsui@gcc.gnu.org> References: <20240214114448.847646-1-kmatsui@gcc.gnu.org> <20240214135252.1416047-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: cZYzWqIHHZVqP2dsGciPh9F1-lr1fC0v X-Proofpoint-GUID: cZYzWqIHHZVqP2dsGciPh9F1-lr1fC0v 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=2024-02-14_06,2024-02-14_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 lowpriorityscore=0 malwarescore=0 spamscore=0 mlxscore=0 priorityscore=1501 impostorscore=0 mlxlogscore=623 suspectscore=0 clxscore=1034 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402140107 X-Spam-Status: No, score=-12.7 required=5.0 tests=BAYES_00,GIT_PATCH_0,JMQ_SPF_NEUTRAL,KAM_DMARC_STATUS,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,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_pointer by dispatching to the new __add_pointer built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (add_pointer): Use __add_pointer built-in trait. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 21402fd8c13..3bde7cb8ba3 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -2121,6 +2121,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { }; #endif + /// add_pointer +#if _GLIBCXX_USE_BUILTIN_TRAIT(__add_pointer) + template + struct add_pointer + { using type = __add_pointer(_Tp); }; +#else template struct __add_pointer_helper { using type = _Tp; }; @@ -2129,7 +2135,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct __add_pointer_helper<_Tp, __void_t<_Tp*>> { using type = _Tp*; }; - /// add_pointer template struct add_pointer : public __add_pointer_helper<_Tp> @@ -2142,6 +2147,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template struct add_pointer<_Tp&&> { using type = _Tp*; }; +#endif #if __cplusplus > 201103L /// Alias template for remove_pointer -- 2.43.0