From patchwork Tue Oct 10 22:10:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ken Matsui X-Patchwork-Id: 151038 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:612c:2908:b0:403:3b70:6f57 with SMTP id ib8csp183413vqb; Tue, 10 Oct 2023 15:57:23 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFK5/AorJ4tASpT/LJwe3yLuOo8IRBm19fKCxA1yrWJ9MZ2Rpe6bJUAGYVLkatvSKTayLBC X-Received: by 2002:a17:906:14e:b0:9ba:13f1:5a7d with SMTP id 14-20020a170906014e00b009ba13f15a7dmr7499699ejh.31.1696978643588; Tue, 10 Oct 2023 15:57:23 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1696978643; cv=none; d=google.com; s=arc-20160816; b=JGY7GM8w0fXcDjyu30xe/oNwkf0kgjBKmTKkJZRmDXd3HfL5uLn6UJcTTRgljC47/2 2jArg2+2qCFSZhVQEHuoIixerzBm7CBbxir2yK0gxqG5phUBSiB/S3WBSi18lrn4QqtH 3/LHFVI01Oqs5vPLZynpS8KroXcLezgxxTYm4x3ZBGp+qoIens+79E4+Fgn/UdQYJ39c YCbdwEksFJ8Z0ANJBzROi/BDSt5gtr6TLGenP79n3QzhT7d5Py219gk31Z1aqYxtCGgf aMKNj/hkCmeloqmOVCv4IyZA8E96U2z3mq+Gnap12fo/O90quSPYbzqbvcf3jX3ZHjdw XnWw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dmarc-filter:delivered-to:dkim-signature:dkim-filter; bh=o1Nmja410XQ2AZC2k+g0bmtqEr2kmIa4YhBvVROe/As=; fh=kSSy/oyUXqQD15FLeKdymIgDBFPFITPA1Gj52CNOxRQ=; b=KRIMZHhVurduUavwaOKNIzfCse9PRaGLAmf1kp8Xdbi4EtAo95AYaYOCLhoZCYQl3H DeDhlZvd0j5rchW7q9LtjpYQpFFrhtpkeIbONzS7RF0/quAzv5kLTYtIe9YcGZSFeIcD aSgCLksCk1IhHf2YDspshU4pKAjERJWHy/BWHvxOG3off9iNs5PEMQZVI+SZYMVK/NaI oc4S5AE8b3fnsJ0miI4doiF2aXHr2uIWpOZ6KLv/k0MAeq/hJ0cMkijCQijjrIw1SGoN /C69DY9PrroZ1YrWt95IjQAunlcyBO4LQZoRX2UmBaG3JpG7bGcUrI36OapmGUuTYyzW aOdA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gcc.gnu.org header.s=default header.b=ftTjHrhs; spf=pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 2620:52:3:1:0:246e:9693:128c as permitted sender) smtp.mailfrom="gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gnu.org Received: from server2.sourceware.org (server2.sourceware.org. [2620:52:3:1:0:246e:9693:128c]) by mx.google.com with ESMTPS id p16-20020a17090628d000b009b93c77d2f6si5872684ejd.489.2023.10.10.15.57.23 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Oct 2023 15:57:23 -0700 (PDT) Received-SPF: pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 2620:52:3:1:0:246e:9693:128c as permitted sender) client-ip=2620:52:3:1:0:246e:9693:128c; Authentication-Results: mx.google.com; dkim=pass header.i=@gcc.gnu.org header.s=default header.b=ftTjHrhs; spf=pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 2620:52:3:1:0:246e:9693:128c as permitted sender) smtp.mailfrom="gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gnu.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id C3E703895FE4 for ; Tue, 10 Oct 2023 22:41:42 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org C3E703895FE4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1696977702; bh=o1Nmja410XQ2AZC2k+g0bmtqEr2kmIa4YhBvVROe/As=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=ftTjHrhs6Raf+gb2kAR4PWjVFkaWotK6DoG927XTRrUlP1HGR/q+O5kjze/oNldWQ PQ+tZivR4Mr8OqJVx68uGYQ1MosFiEqcxLxigH44XT8l/0a/ROD11/+IrFoQNqwEVJ dcHBbffNefFXqhTsG5jBeIv3NUkR7D4eJKD/7qP0= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from mx0b-00641c01.pphosted.com (mx0b-00641c01.pphosted.com [205.220.177.146]) by sourceware.org (Postfix) with ESMTPS id BE2E13AA8CAE; Tue, 10 Oct 2023 22:38:10 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org BE2E13AA8CAE 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 (m0247477.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 39AM7Fha022788; Tue, 10 Oct 2023 22:38:10 GMT Received: from mxout22.s.uw.edu (mxout22.s.uw.edu [128.95.242.222]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3tnc8nt353-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 10 Oct 2023 22:38:10 +0000 Received: from smtp.washington.edu (smtp.washington.edu [140.142.234.157]) by mxout22.s.uw.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 39AMbifQ001332 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 10 Oct 2023 15:37:44 -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 39AMFOUk024596 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 10 Oct 2023 15:37:44 -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 v16 33/39] libstdc++: Optimize is_compound trait performance Date: Tue, 10 Oct 2023 15:10:24 -0700 Message-ID: <20231010221520.3680267-34-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231010221520.3680267-1-kmatsui@gcc.gnu.org> References: <20231010095229.3364786-1-kmatsui@gcc.gnu.org> <20231010221520.3680267-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 X-Proofpoint-GUID: yrJXHnB0WTpw-ZNHwEvb8p7ZYh4tpuj6 X-Proofpoint-ORIG-GUID: yrJXHnB0WTpw-ZNHwEvb8p7ZYh4tpuj6 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.980,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-10-10_19,2023-10-10_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 malwarescore=0 bulkscore=0 mlxscore=0 adultscore=0 mlxlogscore=597 clxscore=1034 phishscore=0 spamscore=0 priorityscore=1501 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2310100174 X-Spam-Status: No, score=-13.4 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 X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1776996293852351903 X-GMAIL-MSGID: 1779411078417798843 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