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 20D0A385C6ED; Fri, 13 Oct 2023 21:30:29 +0000 (GMT) ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 20D0A385C6ED 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=1697232630; cv=none; b=FRp7rVCEkET8vipMH+gJpo6J47URTWB+q3yoVHE5CXebdw4lu7PmlBP2K3pYomzIiNN0u6ygvjaLG8Dqy+AzSnYeq0OubQUgPQ7D6S3XSFCrM5rOSuZWrUEROZvteh3Tqxtnh6fG1kwIqZ7W5E8SKFkO9uUnp08TY+Ty5iJVXE8= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1697232630; c=relaxed/simple; bh=vHI02GzVWW7SZ1SaoXTatpzigzV+rRMb+vomEf99kE4=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=b+SfDYWDcBId9qzWCnAHH8mrMPAA6dH/F0I974PJyJ46fP8KKmpJW1TbQLGWcPuHms2eNUvlNZUyHIVP2YGqKYLdEZ0+BtTiAPVDrtaeiuacO3ZowAhmHjfMBJ/2yb/h6YbQLtwFqSyOr9T086m4qxpv+dPIwXYyNnL+Uv7oKvU= ARC-Authentication-Results: i=1; server2.sourceware.org DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 20D0A385C6ED 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 (m0247472.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 39DLTXxB027174; Fri, 13 Oct 2023 21:30:28 GMT Received: from mxout21.s.uw.edu (mxout21.s.uw.edu [140.142.32.139]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3tqdeqr93q-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Oct 2023 21:30:27 +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+UW22.04) with ESMTP id 39DLUPmY018878 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 13 Oct 2023 14:30:25 -0700 X-Auth-Received: from kmatsui-ThinkPad-X1-Carbon-Gen-9.dhcp4.washington.edu ([10.19.18.191]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW19.10) with ESMTPSA id 39DLC9cV009146 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Oct 2023 14:30:25 -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 v18 28/40] libstdc++: Optimize remove_pointer trait performance Date: Fri, 13 Oct 2023 14:04:24 -0700 Message-ID: <20231013211206.1215663-29-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231013211206.1215663-1-kmatsui@gcc.gnu.org> References: <20231011215049.1052142-1-kmatsui@gcc.gnu.org> <20231013211206.1215663-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: WUzR69aSO1BCQO8RiVyPsawogoxJhNF6 X-Proofpoint-GUID: WUzR69aSO1BCQO8RiVyPsawogoxJhNF6 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.980,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-10-13_12,2023-10-12_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 lowpriorityscore=0 impostorscore=0 mlxlogscore=664 phishscore=0 mlxscore=0 clxscore=1034 priorityscore=1501 suspectscore=0 spamscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2310130186 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 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 remove_pointer trait by dispatching to the new remove_pointer built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (remove_pointer): Use __remove_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 674d398c075..9c56d15c0b7 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -2105,6 +2105,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION // Pointer modifications. + /// remove_pointer +#if _GLIBCXX_USE_BUILTIN_TRAIT(__remove_pointer) + template + struct remove_pointer + { using type = __remove_pointer(_Tp); }; +#else template struct __remove_pointer_helper { using type = _Tp; }; @@ -2113,11 +2119,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct __remove_pointer_helper<_Tp, _Up*> { using type = _Up; }; - /// remove_pointer template struct remove_pointer : public __remove_pointer_helper<_Tp, __remove_cv_t<_Tp>> { }; +#endif template struct __add_pointer_helper -- 2.42.0