From patchwork Fri Oct 13 22:37:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ken Matsui X-Patchwork-Id: 152848 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:612c:2908:b0:403:3b70:6f57 with SMTP id ib8csp2195208vqb; Fri, 13 Oct 2023 15:53:35 -0700 (PDT) X-Google-Smtp-Source: AGHT+IEQxkB4Prqo/ciuNy+C4joyGOp7VoHqGsgfAfS9BQxwnylIia9m2MJgTwmUM1BiL02Uf27u X-Received: by 2002:ac8:5bc1:0:b0:417:9c63:a7ac with SMTP id b1-20020ac85bc1000000b004179c63a7acmr30855854qtb.68.1697237615439; Fri, 13 Oct 2023 15:53:35 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1697237615; cv=pass; d=google.com; s=arc-20160816; b=BnsXBgwjlAC3hX+uuBPrvGYEcXHXstvKyRY2vxMskKsn7aMzlayOkAV1OVYYPi5+aV SeckiwSUGdV9qQf+XX3clHD1jjkvqX7RfnYKY8GHfy0Ll2YdVStrfNEKyI42gX4W49QO 3HRYjHlpsMGCMNUb1uJarbF6Sk8XYIMf4N6HGJccTRzvqK8mTP71hFcV0fR2e6a2AW5X uvv/YCHqytPunbFhq/4yA4O8ymX+dGhaFTu4a3iV1fpnvkWeismNB9NaBAKQbXX3A4wB newfC4JgdewNJ4NNm2hZDygYEQkn8Qt2WlS6/2jS6QlqW8sUE/4wKg5vZO0TxulGLfIP 257A== ARC-Message-Signature: i=2; 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:arc-filter:delivered-to:dkim-signature :dkim-filter; bh=wgA0JB2W7H093Rs+2xKll9G1wCc1Kjb079SkDPcw4Tc=; fh=kSSy/oyUXqQD15FLeKdymIgDBFPFITPA1Gj52CNOxRQ=; b=XwtFQHGC+9u6VspPWwhHLgWcjc0luZn8sUqim10LamV8Oilzrdghkb2Lgjx2Qc5xE6 O7qI2HibrL+JEESVb+0LXkPvx1KgtAnQom3xmGRLfSQ7/VzlTQaBeT4Sd+4tPHeBL3zd WYnVnnmiLG/16kEr8FB3n9DYS2sdxLHTvqFjrLHqlxc1cLrNNm5UvrcqqMxQLh4HX0oK k0TdjuRZ6noIOBHxbyk3aAcD3+Byy9OwE/3RR0ztA9YjhHV3nwwW8N8KoivSB+WbsS9X FaDXluDry2h/UzZdGaFNYYIQ54o3pEQooUle9afM/hT+KS3RSReYY0o2j6rWAl7uQ9Mr GTjw== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@gcc.gnu.org header.s=default header.b=OYhhM5uB; arc=pass (i=1); 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 w12-20020ac857cc000000b00419a4b7aa59si1874249qta.481.2023.10.13.15.53.35 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:53:35 -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=OYhhM5uB; arc=pass (i=1); 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 015123856956 for ; Fri, 13 Oct 2023 22:53:34 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 015123856956 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1697237614; bh=wgA0JB2W7H093Rs+2xKll9G1wCc1Kjb079SkDPcw4Tc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=OYhhM5uBS6wagWYznPER55dPj+7znsJ3ksvYX4mpJOsCH0p/P2YtIhkGJ4A8wE9qf L71M0g9mK4zSvdH94IZ/zNMmCyymHdDqVglrW5HtDMcxb71VfKJneNEhJjDmZf8z4C aI41tFEi8Wk4KI4Bgjd11rORo6thq9O14pmsqYS8= 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 B39F83856975; Fri, 13 Oct 2023 22:43:17 +0000 (GMT) ARC-Filter: OpenARC Filter v1.0.0 sourceware.org B39F83856975 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=1697237008; cv=none; b=oVclhfOxC5ND6bWklLL3g0TM2CjuZ1SpdVVbo5/azVxYj9I4VL/hmX+zwoCUDS6xUyEZDf4C7gevVAnQQc9JGPQsDstfExpGMBcHxSAf/h70b0OnuG/MktYuvf8A8NcEoJ8bGBEXW2r0w4OZ3kFdDqNuDVm1wf4VLF89OKYEqGk= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1697237008; c=relaxed/simple; bh=yZDHLGphd8jxjnk42PZPq1zND4PhrwWhUcJ7anaWSLE=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=LDFZ0t7y/HgFSUKbpgh9d7UHeLoHhymB6T1/bSD/O+vOa9jrRhLFd8FhgN4xN03okdoS0USWYHD9U2362EjWh+m3KUbZvADhsicg04DRaZBHlCIT2mT7gf8Cwivkv/L/rZjmQr4iC4kANRjLum3fafFWIOjK74Tgi7oVmp9HpsM= ARC-Authentication-Results: i=1; server2.sourceware.org DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org B39F83856975 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 39DMgb9m003205; Fri, 13 Oct 2023 22:43:17 GMT Received: from mxout24.cac.washington.edu (mxout24.cac.washington.edu [140.142.234.158]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3tqdep0tce-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Oct 2023 22:43:17 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.54]) by mxout24.cac.washington.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 39DMh38D001617 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 13 Oct 2023 15:43:03 -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 39DMdx1r016619 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Oct 2023 15:43:03 -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 40/40] libstdc++: Optimize is_scalar trait performance Date: Fri, 13 Oct 2023 15:37:54 -0700 Message-ID: <20231013223957.1634024-41-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 X-Proofpoint-ORIG-GUID: 0c1_DTiq1cewC3nRqHC_9mwJFqpECQft X-Proofpoint-GUID: 0c1_DTiq1cewC3nRqHC_9mwJFqpECQft 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 spamscore=0 clxscore=1034 impostorscore=0 phishscore=0 adultscore=0 suspectscore=0 malwarescore=0 mlxlogscore=551 mlxscore=0 priorityscore=1501 bulkscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2310130197 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 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: 1776997480812710190 X-GMAIL-MSGID: 1779682629496828815 This patch optimizes the performance of the is_scalar trait by dispatching to the new __is_scalar built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_scalar): Use __is_scalar built-in trait. (is_scalar_v): Likewise. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 7e93923f44b..eb16a642575 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -775,11 +775,18 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct is_member_pointer; /// is_scalar +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_scalar) + template + struct is_scalar + : public __bool_constant<__is_scalar(_Tp)> + { }; +#else template struct is_scalar : public __or_, is_enum<_Tp>, is_pointer<_Tp>, is_member_pointer<_Tp>, is_null_pointer<_Tp>>::type { }; +#endif /// is_compound template @@ -3398,8 +3405,14 @@ template inline constexpr bool is_object_v = is_object<_Tp>::value; #endif +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_scalar) +template + inline constexpr bool is_scalar_v = __is_scalar(_Tp); +#else template inline constexpr bool is_scalar_v = is_scalar<_Tp>::value; +#endif + template inline constexpr bool is_compound_v = !is_fundamental_v<_Tp>;