From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-00641c01.pphosted.com (mx0a-00641c01.pphosted.com [205.220.165.146]) by sourceware.org (Postfix) with ESMTPS id CD0EA384CBBC; Sat, 23 Dec 2023 22:09:03 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org CD0EA384CBBC 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 CD0EA384CBBC 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=1703369345; cv=none; b=jIrigIxf3NzDJKXprqh4hqeK5PbgcC0bLl7aWofcOkdrTFbDVlUGwWm583xULJp+udzQCEzmex3goZdey7Uj9LyLlKesBOv50ia8RPgr3N/AR31jjxYgPlMWp6EMW2vOp0LAxI0FiuO9upDxD9uJ2S04aOFhs1VbWLku8FmwmLk= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1703369345; c=relaxed/simple; bh=GG2lrWegOwkmV8MxFmTHsx8otqTtOOhQr2HLD/0MFuo=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=BLrlOpM2y12DeAgRGbPt33xGeCmyEkByMFJr8C3dA2czyj6hyIzFrZyYInBA40YL/e+YC0wOpNHpV3jHioDUQvFjVwOkq2ByofF0roMCZJvPC2Lg03uV/kh2Ber9CrfJOF9QU9SFScZO4dFw9rKMylbL3QQaw7mOtdvfLo78ptU= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from pps.filterd (m0247470.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3BNM7fBR028225; Sat, 23 Dec 2023 22:09:02 GMT Received: from mxout22.s.uw.edu (mxout22.s.uw.edu [128.95.242.222]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3v5r5cb71c-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 23 Dec 2023 22:09:02 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.54]) by mxout22.s.uw.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 3BNM8csn020155 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 23 Dec 2023 14:08:38 -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 3BNM4Y2B011837 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 23 Dec 2023 14:08:38 -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 8/8] libstdc++: Optimize std::is_unbounded_array compilation performance Date: Sat, 23 Dec 2023 14:02:49 -0800 Message-ID: <20231223220432.712093-9-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 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: -qaEqNGio8hNrJDoY_E44LCPqA6pQhaO X-Proofpoint-GUID: -qaEqNGio8hNrJDoY_E44LCPqA6pQhaO 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 phishscore=0 priorityscore=1501 spamscore=0 malwarescore=0 suspectscore=0 impostorscore=0 mlxscore=0 lowpriorityscore=0 mlxlogscore=524 adultscore=0 clxscore=1034 bulkscore=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_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 List-Id: This patch optimizes the compilation performance of std::is_unbounded_array by dispatching to the new __is_unbounded_array built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_unbounded_array_v): Use __is_unbounded_array built-in trait. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index d53911b2fa0..a548982236d 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -3670,11 +3670,16 @@ template /// True for a type that is an array of unknown bound. /// @ingroup variable_templates /// @since C++20 +# if _GLIBCXX_USE_BUILTIN_TRAIT(__is_unbounded_array) + template + inline constexpr bool is_unbounded_array_v = __is_unbounded_array(_Tp); +# else template inline constexpr bool is_unbounded_array_v = false; template inline constexpr bool is_unbounded_array_v<_Tp[]> = true; +# endif /// True for a type that is an array of known bound. /// @since C++20 -- 2.43.0