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 8FA8F385C303; Fri, 13 Oct 2023 22:43:22 +0000 (GMT) ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 8FA8F385C303 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=1697237015; cv=none; b=Wkq7f+qyz1akgj2TgWgCUpqfZQGBF8kHEpzphr7hUz9/fJz6Ikh4n8jwX2lrPtdCtpRyb4ybjy4eEsSMFYrC7jE1wELi6BdnRgFt8S1zMo8LjrcPVudrjLxdxmrJzMPosAk/OmDmVy+ET+d+CWa6XdZnIGg97N4Qv2W0JOxWJuk= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1697237015; c=relaxed/simple; bh=oaOZvY943DFsKkUU3T+LqLGilkqxFzx+Qlt1BfE8jdQ=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=uP3YO7njphLQtRgi9FsgXTBtRjC/C9a5HGZZr5x1SnhgRKkxnN4qaAJyg1CF2Wc20t/XF2REaqmgLcPbLIeROsbOX5ktuNj6B+mOas6F8II1qDbCCs04KbwKnbkiTC9ceJCTMJq6DA0LNibVk6FUyp4fxb5cIbc1jzWvDr4Hakw= ARC-Authentication-Results: i=1; server2.sourceware.org DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 8FA8F385C303 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 (m0247478.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 39DMhM4G016990; Fri, 13 Oct 2023 22:43:22 GMT Received: from mxout23.cac.washington.edu (mxout23.cac.washington.edu [140.142.32.140]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3tqdeu8ttv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Oct 2023 22:43:22 +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 39DMh2Zs001570 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 13 Oct 2023 15:43:02 -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 39DMdx1l016619 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Oct 2023 15:43:02 -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 v19 34/40] libstdc++: Optimize is_compound trait performance Date: Fri, 13 Oct 2023 15:37:48 -0700 Message-ID: <20231013223957.1634024-35-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231013223957.1634024-1-kmatsui@gcc.gnu.org> References: <20231013211206.1215663-1-kmatsui@gcc.gnu.org> <20231013223957.1634024-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: KSeuGorZXu6hUdK_zUx1ZltPzT5ebfxl X-Proofpoint-ORIG-GUID: KSeuGorZXu6hUdK_zUx1ZltPzT5ebfxl 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 mlxscore=0 spamscore=0 adultscore=0 bulkscore=0 mlxlogscore=475 impostorscore=0 phishscore=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 priorityscore=1501 clxscore=1034 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2310130198 X-Spam-Status: No, score=-13.1 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 performance of the is_compound trait by dispatching to the new __is_arithmetic built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_compound): Do not use __not_. (is_compound_v): Use is_fundamental_v instead. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 88171e1a672..48d630a1478 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -784,7 +784,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION /// is_compound template struct is_compound - : public __not_>::type { }; + : public __bool_constant::value> { }; /// is_member_pointer #if _GLIBCXX_USE_BUILTIN_TRAIT(__is_member_pointer) @@ -3387,7 +3387,7 @@ template template inline constexpr bool is_scalar_v = is_scalar<_Tp>::value; template - inline constexpr bool is_compound_v = is_compound<_Tp>::value; + inline constexpr bool is_compound_v = !is_fundamental_v<_Tp>; #if _GLIBCXX_USE_BUILTIN_TRAIT(__is_member_pointer) template -- 2.42.0