From patchwork Sat Dec 23 22:02:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ken Matsui X-Patchwork-Id: 183013 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7300:2483:b0:fb:cd0c:d3e with SMTP id q3csp1882984dyi; Sat, 23 Dec 2023 14:07:41 -0800 (PST) X-Google-Smtp-Source: AGHT+IHoa/fINt0zWQIAez53FCUAMA31IA/9Js2wQPJXeX8Eis+OqfqCJzT8JTawJyWsUAUbMy7J X-Received: by 2002:aca:2118:0:b0:3bb:6b22:9595 with SMTP id 24-20020aca2118000000b003bb6b229595mr2971426oiz.108.1703369261434; Sat, 23 Dec 2023 14:07:41 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1703369261; cv=pass; d=google.com; s=arc-20160816; b=BV5nBDCUvB3Sf+MqgD3oJyprGBlgy+2PdzXdLdhR50Fnd15Pn+DtIXDp5FdNmWgWg4 DxGqSgOLXPWt4YOBzvTFog/gMzljRNs1EPPvA1QCLqUsnxODJp+Ktrb5d+qJNa+CtPRC sMkLpZKmWMAtqaUOIAd1H2lGh0BxH4OnX/53dfZGvjMf/0vRg+yvK2FlrsrxTE1bRHsi 8Q7qUWm6GT629+02nx2qms/KLOKDExwP6FV4rwaD4G18ph7UMG3XnDODzrMJHFo1jaCT bCrYalfWkFzTXkySXJW0nhh03BGFCHQw+0oEyFs7g5hdk3FDvvikcJdOILN+0033NgQT lcBg== 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:arc-filter:dmarc-filter:delivered-to:dkim-signature :dkim-filter; bh=jPGj10E/uvmNemNXhPcqZvLNZlOIGR7M7P99NhqHrFc=; fh=kSSy/oyUXqQD15FLeKdymIgDBFPFITPA1Gj52CNOxRQ=; b=q5Xn49JrLONZpumXbNpg69qGX/l8Nl59JdsJ5+4P+99HXm/yEFMGtHsWpn+F4WKA94 L7ZMRPfQc1EStEx/9cZ4T+hPQpAyImTI/7QHwr/mVupD3hIAI4MgfQH8pKUj31rIK+aG 245ESL0+Qq2cPwEoOXxxGqjFsBzc3D3WVkYmGndl1AtW7GT/CmFODHJ5SGiPdtBE5fyd mJw9GfhR5UPP9iOuAx498PXSVaz9Iumv0kw2AgSSk7LpJEjLwNNlYsExGGS/H8oZK7XP AhBj2yYKyu5YEFGd3DSbS0TRu63lHfZPxE9Cdr1We+ydpuifN1ZVnrcw320p5+OMUBwv 7TDg== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@gcc.gnu.org header.s=default header.b=Yo2gLPlQ; 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 u1-20020a05620a0c4100b0076d8bb2e9f9si7921815qki.680.2023.12.23.14.07.41 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 23 Dec 2023 14:07:41 -0800 (PST) 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=Yo2gLPlQ; 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 1EF623865C24 for ; Sat, 23 Dec 2023 22:07:41 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 1EF623865C24 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1703369261; bh=jPGj10E/uvmNemNXhPcqZvLNZlOIGR7M7P99NhqHrFc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=Yo2gLPlQkvTMaxMH+gpGigQw2B4OE7NDjtBFVViPKZIF2UUvae7SnhMGEvpFdrw1T 7+PXzbd3nlVGJS3WY+RP6p9BDZhD2Aosu9+pOvWH3QdJGQFd+QUafGkuAkXGVLRf0Z y6EfPvTksSvq/YCRpZtNw2BZcVCBHZG9TwppCdxc= 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 52D96386480A; Sat, 23 Dec 2023 22:06:56 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 52D96386480A 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 52D96386480A 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=1703369217; cv=none; b=rtLSQ1yX8k6B4FXgpN+0FqcrtiaK53930Tq/7gywgQvU2J4IoN/BjXyFFLsH0R7HDLriEAN2M8Cl90E/hIcv7xx62WTEhoPOBfJyPIJ1JS12uPsAvBmCgW+IoIkHrMLwuwmngO5RYz65m2ijABYMbTkMGIVeN+avxZ0XL+mAWhU= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1703369217; c=relaxed/simple; bh=9cdwRjV/xiTE1ek+rx8t6QJmRrfz93n0LsUukxj3HaY=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=YzirElD5MPSz/RNuD2FAGvYxz1iTm6AKBD4wnBfyK+FTgLlWpg0heCz18IaJWq+1R31ls8GphycmoVo6F+OL6V1xqozOCdKNxWB79FIk8ViOCs+ymuRaVOw42UoLfdzkiKS4JcOYWhEBah80a18vQ7QxBZFKy0C4ZnIt7CebaX0= ARC-Authentication-Results: i=1; server2.sourceware.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 3BNM6uNd015926; Sat, 23 Dec 2023 22:06:56 GMT Received: from mxout21.s.uw.edu (mxout21.s.uw.edu [140.142.32.139]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3v5rwru594-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 23 Dec 2023 22:06:55 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.54]) by mxout21.s.uw.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 3BNM6YBP019745 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 23 Dec 2023 14:06:34 -0800 X-Auth-Received: from kmatsui-ThinkPad-X1-Carbon-Gen-9.dhcp4.washington.edu ([10.154.74.194]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW19.10) with ESMTPSA id 3BNM4Y27011837 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 23 Dec 2023 14:06:34 -0800 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 v2 4/8] libstdc++: Optimize std::is_volatile compilation performance Date: Sat, 23 Dec 2023 14:02:45 -0800 Message-ID: <20231223220432.712093-5-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231223220432.712093-1-kmatsui@gcc.gnu.org> References: <20231223220432.712093-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: xJvdC1Gnq-mquQBBy66aE4zezPzFbEhO X-Proofpoint-GUID: xJvdC1Gnq-mquQBBy66aE4zezPzFbEhO X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-23_10,2023-12-22_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 mlxscore=0 mlxlogscore=721 priorityscore=1501 malwarescore=0 bulkscore=0 suspectscore=0 spamscore=0 lowpriorityscore=0 clxscore=1034 adultscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2312230175 X-Spam-Status: No, score=-12.8 required=5.0 tests=BAYES_00, GIT_PATCH_0, JMQ_SPF_NEUTRAL, KAM_DMARC_STATUS, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NEUTRAL, TXREP, T_SCC_BODY_TEXT_LINE 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: 1786112126491765165 X-GMAIL-MSGID: 1786112126491765165 This patch optimizes the compilation performance of std::is_volatile by dispatching to the new __is_volatile built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_volatile): Use __is_volatile built-in trait. (is_volatile_v): Likewise. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index f40831de838..30b0778e58a 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -851,6 +851,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION #endif /// is_volatile +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_volatile) + template + struct is_volatile + : public __bool_constant<__is_volatile(_Tp)> + { }; +#else template struct is_volatile : public false_type { }; @@ -858,6 +864,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template struct is_volatile<_Tp volatile> : public true_type { }; +#endif /// is_trivial template @@ -3344,10 +3351,15 @@ template inline constexpr bool is_function_v<_Tp&&> = false; #endif +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_volatile) +template + inline constexpr bool is_volatile_v = __is_volatile(_Tp); +#else template inline constexpr bool is_volatile_v = false; template inline constexpr bool is_volatile_v = true; +#endif template inline constexpr bool is_trivial_v = __is_trivial(_Tp);