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 49E13384AB5D; Thu, 2 May 2024 16:16:38 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 49E13384AB5D 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 49E13384AB5D 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=1714666605; cv=none; b=x44b+gpkn9y0Hvupb+c//V2TfF58RQugI7X5R2K1ZvSMJZEcgNreLyf+27ladZVnCqed38KNJZGxp8OmoYi+Xr9kWal3CZoiDOiU9MT0N+fw4MwB+bFsOPmSIhC3xS8HqKAMj9zTo0TVkLp7My+9uT1DAyzOyK8ouIBornCuQj0= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1714666605; c=relaxed/simple; bh=JogDg5lk7qviN8YC5LoODZ+ZL9QBf8mrw8shPLEQNLU=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=QJExzTlIp8SunFvfHtnNKdNs3OThUyiZvYK4ABbOfr1H9wxslSe43cNH02qZpJVLt7JZBgL2QXgxpWm26E3sIJ+EBzDvOaFWnmqdm+BokQjZkbVToS88pLuMm44bSlm9h5G1ZY2WJK0W5cYpobSLxTntzFZOwn9BixyJ8K7BBuY= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from pps.filterd (m0247479.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 442GEuhQ023317; Thu, 2 May 2024 16:16:37 GMT Received: from mxout25.s.uw.edu (mxout25.s.uw.edu [140.142.234.175]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3xv4e2uems-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 02 May 2024 16:16:37 +0000 (GMT) Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.54]) by mxout25.s.uw.edu (8.14.4+UW20.07/8.14.4+UW24.02) with ESMTP id 442GGG7Y024918 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 2 May 2024 09:16:16 -0700 X-Auth-Received: from ken-20xw00qgus.dhcp4.washington.edu ([10.154.75.239]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW24.02) with ESMTPSA id 442GGFor023119 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 2 May 2024 09:16:16 -0700 X-UW-Orig-Sender: kmatsui@smtp.washington.edu From: Ken Matsui To: gcc-patches@gcc.gnu.org Cc: libstdc++@gcc.gnu.org, jason@redhat.com, Ken Matsui Subject: [PATCH v16 14/26] libstdc++: Optimize std::remove_all_extents compilation performance Date: Thu, 2 May 2024 09:13:40 -0700 Message-ID: <20240502161614.3705912-15-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240502161614.3705912-1-kmatsui@gcc.gnu.org> References: <20240228192843.188979-1-kmatsui@gcc.gnu.org> <20240502161614.3705912-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: pHshDXVs5gxe-MJ2WAsodxtsWrLpxJrt X-Proofpoint-ORIG-GUID: pHshDXVs5gxe-MJ2WAsodxtsWrLpxJrt X-outbound-smtp: 1 x-header: uw-relay-non-domains X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1011,Hydra:6.0.650,FMLib:17.11.176.26 definitions=2024-05-02_05,2024-05-02_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 impostorscore=0 priorityscore=1501 bulkscore=0 suspectscore=0 clxscore=1034 mlxlogscore=857 spamscore=0 mlxscore=0 phishscore=0 adultscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2404010003 definitions=main-2405020106 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,RCVD_IN_MSPIKE_H2,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 compilation performance of std::remove_all_extents by dispatching to the new __builtin_remove_all_extents trait. libstdc++-v3/ChangeLog: * include/std/type_traits (remove_all_extents): Use __builtin_remove_all_extents trait. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 36136440fdd..8f756712c63 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -2111,6 +2111,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION #endif /// remove_all_extents +#if _GLIBCXX_USE_BUILTIN_TRAIT(__builtin_remove_all_extents) + template + struct remove_all_extents + { using type = __builtin_remove_all_extents(_Tp); }; +#else template struct remove_all_extents { using type = _Tp; }; @@ -2122,6 +2127,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template struct remove_all_extents<_Tp[]> { using type = typename remove_all_extents<_Tp>::type; }; +#endif #if __cplusplus > 201103L /// Alias template for remove_extent -- 2.44.0