From patchwork Mon Feb 19 13:51:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ken Matsui X-Patchwork-Id: 203102 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:693c:2685:b0:108:e6aa:91d0 with SMTP id mn5csp1296360dyc; Mon, 19 Feb 2024 05:57:05 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCWu4GHNvDHuxvGv4+mmLoLexRtchVVEt3q1kP1vSz/vZNpETwfJahrvqzOPhCQNemmRR66Q+JWwYQAAu+73znzBK+PSUw== X-Google-Smtp-Source: AGHT+IFj67OUGylf6ZuhCz2AAP0gt/RtbBvyNQnjsgJYpg4MiM/dVjgYH7x2AwjbyNeVR0Nl83jM X-Received: by 2002:a05:620a:134b:b0:787:519a:252a with SMTP id c11-20020a05620a134b00b00787519a252amr6390649qkl.35.1708351025295; Mon, 19 Feb 2024 05:57:05 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1708351025; cv=pass; d=google.com; s=arc-20160816; b=GlWRwtLxeHROEJ3FX1RdLKLBGfMEbVIf8vW5xoFe8iyH2gSd0ftXfdnxMUccLksNTv E3yGCLFPBgXS199NUIWTTiqy6lqRKsXEKUDy2l5syBkGadD3jI7vGKWQoSnK1S8UCOJ6 fErxgSTvTnth9Jlbx3zFyQRKuMGRv2UgTwHnu1DtCDMa31qohq0srKsVrVHSPguL/I4a JFiZN0DR26scErqGSPT8zWbOiVAf7JxJNLkgZb1zAQE7gR9RKBiVyO36mIprNHzNRRDE Z5IX8ZmW5iBi99FeTzgSBocQrpeWpbfqOb+d6OLzzmzOettIU6VhpcB/+FC9dxT79Lc4 o7eA== 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=ysf8m6lP/8/PGBY1lK9v689ejogPiG52yf1gUrppZnI=; fh=kSSy/oyUXqQD15FLeKdymIgDBFPFITPA1Gj52CNOxRQ=; b=k7Zg+9ue4cueaS0IWBTAErajyPgtZXvYZ2nC9MNkWFpfwHexQVH9zPsPn0UW3zXWTH Q8HP5aEcZAY0jIn23rVX1byBGIhIwx9Znn8i38C305mCyJe8v5y2htwPTYAxFm4mwEHC NRBVybaWNlfSV2tO3hv9v4wtBAhLvqs5MYIlfx69zVpNCy5fRat/nV0XyM4lIlNjQpVG HkwzgUCMcH0L5cjHe0tfJ22VwcnO+hcf9Qk3Z5+FSP5Vx7ULuERlMdTJr0PeS2saoOM8 2Gn9rfEaNTEpVU56aiBkqKIvh8h6Tb0D9AOsQ0OMUW2HauCkfMErTByRuCnii5UAu0TI EALg==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@gcc.gnu.org header.s=default header.b=DtQRCgg6; arc=pass (i=1); spf=pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 8.43.85.97 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. [8.43.85.97]) by mx.google.com with ESMTPS id vq7-20020a05620a558700b007872d315cd7si6119280qkn.301.2024.02.19.05.57.05 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Feb 2024 05:57:05 -0800 (PST) Received-SPF: pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 8.43.85.97 as permitted sender) client-ip=8.43.85.97; Authentication-Results: mx.google.com; dkim=pass header.i=@gcc.gnu.org header.s=default header.b=DtQRCgg6; arc=pass (i=1); spf=pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 8.43.85.97 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 E8E203865C2B for ; Mon, 19 Feb 2024 13:57:04 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E8E203865C2B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1708351024; bh=ysf8m6lP/8/PGBY1lK9v689ejogPiG52yf1gUrppZnI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=DtQRCgg6S64iwatI+3kOoex6pYYR+f/vALGuediORvT7L5UTtJKi77SapLFr6WzJv PjtWs747s+CfpE4OaGFmbt7C8Byw8qGz2bJkO9YwFE8MccmBB6kKnSYpBZTcwO1r/T WjXdY9ciwV9CjNR7LEqLmMSScWbKd6IZ17SU0sjw= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from mx0a-00641c01.pphosted.com (mx0a-00641c01.pphosted.com [205.220.165.146]) by sourceware.org (Postfix) with ESMTPS id 8D5A43864804; Mon, 19 Feb 2024 13:51:39 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 8D5A43864804 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 8D5A43864804 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=205.220.165.146 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1708350702; cv=none; b=Caf6hhkbxQ6s4+awp85c6M9xXpALILP4pXm9K/13mqwhNRtuuzA5EI3uo1L/CwOJiAe+pR7J5Rs39ePo7KA6JsFA/zZyXhbXImrmNJFE5tdYQfZZNK1iUH0sGsTRtzde37WzyD/HS4NXapNj67nbYES7Ldp97IhyhHWmaWdBzBU= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1708350702; c=relaxed/simple; bh=H6zOVUl8oWGElE96ZPU7Yajgdu2XoF7FbNqhYFYoXG0=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=IZN8pBnWieLjHM4d3NMaDeRvpdSdiT22/SKSht/9oYhXt1c7nB3VIh6nZb6m0bWEt/ZQ3LnjXynWdDObhOLYr7+HDJ0x/i5vsb+OmHDQpn5vgwGTFV55u8i2GhB8/steAYZh68gKeLIzRQn6dDg3WfZYDBII2aKH9hdSj48H3NA= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from pps.filterd (m0247471.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 41JDKOAn001468; Mon, 19 Feb 2024 13:51:38 GMT Received: from mxout24.cac.washington.edu (mxout24.cac.washington.edu [140.142.234.158]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3wb67mf21h-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 19 Feb 2024 13:51:38 +0000 Received: from smtp.washington.edu (smtp.washington.edu [140.142.234.157]) by mxout24.cac.washington.edu (8.14.4+UW20.07/8.14.4+UW24.02) with ESMTP id 41JDpZqk001135 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 19 Feb 2024 05:51:35 -0800 X-Auth-Received: from kmatsui-ThinkPad-X1-Carbon-Gen-9.dhcp4.washington.edu ([10.154.74.143]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW24.02) with ESMTPSA id 41JDpZRM001026 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 19 Feb 2024 05:51:35 -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 v7 04/22] libstdc++: Optimize std::is_volatile compilation performance Date: Mon, 19 Feb 2024 05:51:11 -0800 Message-ID: <20240219135129.3635809-4-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240219135129.3635809-1-kmatsui@gcc.gnu.org> References: <20240106050754.3054782-1-kmatsui@gcc.gnu.org> <20240219135129.3635809-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 X-Proofpoint-GUID: C8YLE5GR5U7lZFEBX7P_Loi7lF9hW5lG X-Proofpoint-ORIG-GUID: C8YLE5GR5U7lZFEBX7P_Loi7lF9hW5lG X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-19_09,2024-02-19_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 phishscore=0 mlxlogscore=609 priorityscore=1501 mlxscore=0 suspectscore=0 clxscore=1034 adultscore=0 spamscore=0 bulkscore=0 lowpriorityscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402190103 X-Spam-Status: No, score=-13.0 required=5.0 tests=BAYES_00, GIT_PATCH_0, JMQ_SPF_NEUTRAL, KAM_DMARC_STATUS, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, 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: 1791335885072577536 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 6e9ebfb8a18..60cd22b6f15 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 @@ -3356,10 +3363,15 @@ 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);