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 835723858D3C; Tue, 12 Sep 2023 04:47:05 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 835723858D3C 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 (m0247476.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 38C4YLng007607; Tue, 12 Sep 2023 04:47:05 GMT Received: from mxout23.cac.washington.edu (mxout23.cac.washington.edu [140.142.32.140]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3t2agfjbd0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 12 Sep 2023 04:47:04 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.54]) by mxout23.cac.washington.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 38C4keb7007192 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 11 Sep 2023 21:46:40 -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 38C4kdoo008138 (version=TLSv1.2 cipher=DHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Mon, 11 Sep 2023 21:46:40 -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 0/2] Optimize is_member_pointer trait performance Date: Mon, 11 Sep 2023 21:26:17 -0700 Message-ID: <20230912044638.14504-1-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.42.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: OjpkCuGNXSCMBME8z0c2NXGbZSiVg1nI X-Proofpoint-ORIG-GUID: OjpkCuGNXSCMBME8z0c2NXGbZSiVg1nI X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-09-12_01,2023-09-05_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=4 mlxscore=4 spamscore=4 adultscore=0 malwarescore=0 clxscore=1034 lowpriorityscore=0 priorityscore=1501 bulkscore=0 suspectscore=0 impostorscore=0 mlxlogscore=143 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309120038 X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00,JMQ_SPF_NEUTRAL,KAM_DMARC_STATUS,RCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NEUTRAL,TXREP autolearn=no 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 series optimizes is_member_pointer trait performance. The first patch implements __is_member_pointer built-in trait. The second patch optimizes is_member_pointer trait performance by using __is_member_pointer built-in trait if available. The performance improvement is shown in the following benchmark: https://github.com/ken-matsui/gsoc23/blob/main/is_member_pointer_v.md#mon-sep-11-092927-pm-pdt-2023 Time: -47.2037% +/- 2.12936% Peak Memory Usage: -39.4183% +/- 0.00217276% Total Memory Usage: -41.9905% +/- 0% Ken Matsui (2): c++: Implement __is_member_pointer built-in trait libstdc++: Optimize is_member_pointer trait performance gcc/cp/constraint.cc | 3 ++ gcc/cp/cp-trait.def | 1 + gcc/cp/semantics.cc | 4 +++ gcc/testsuite/g++.dg/ext/has-builtin-1.C | 3 ++ gcc/testsuite/g++.dg/ext/is_member_pointer.C | 30 ++++++++++++++++++++ libstdc++-v3/include/std/type_traits | 16 ++++++++++- 6 files changed, 56 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/g++.dg/ext/is_member_pointer.C -- 2.42.0