From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-00641c01.pphosted.com (mx0b-00641c01.pphosted.com [205.220.177.146]) by sourceware.org (Postfix) with ESMTPS id 03C9A384AB75; Thu, 2 May 2024 18:45:47 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 03C9A384AB75 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 03C9A384AB75 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=1714675569; cv=none; b=K+lfxeYErJcCfgRmbj02zH2HscSQ6rQaM5KUjh/auDClH9jb60IrXdYavjPtLfDm5icOKQW6eZ3G6lAoEZINL6c+lMoxvhJBUZeYyNTjmG4bJNZO4LhQCUQBRW55H/pND1c/OtJBrifkqH0vnq30fpfz5QJP+Vwh8vSqc0mDTyI= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1714675569; c=relaxed/simple; bh=/KfS4jWnPtsuwU6RF881pNQahTESL4y7cxXr59XZ70E=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=aGASe9IikyZBI48z4UjP7HNAYeUcdgL9119ruJ0QM9Kp72zvyUQYziJ7GlEVYrlhRt/T4sL4XxiJZ9hFjOujGpgVesPhRV8DGsPAfPDNGtoRFwFXRDsBDjT+MeKy2waanfGaYnEFo1tLfckectskyJJtt4KdS3X4qAHXm7Fi5/I= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from pps.filterd (m0247476.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 442IetCX030972; Thu, 2 May 2024 18:45:47 GMT Received: from mxout25.s.uw.edu (mxout25.s.uw.edu [140.142.234.175]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3xvf56gtpq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 02 May 2024 18:45:47 +0000 (GMT) Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.132]) by mxout25.s.uw.edu (8.14.4+UW20.07/8.14.4+UW24.02) with ESMTP id 442IjYLM020179 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 2 May 2024 11:45:34 -0700 X-Auth-Received: from ken-20xw00qgus.dhcp4.washington.edu ([10.154.75.239]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW24.02) with ESMTPSA id 442IjVwv032283 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 2 May 2024 11:45:32 -0700 X-UW-Orig-Sender: kmatsui@smtp.washington.edu From: Ken Matsui To: gcc-patches@gcc.gnu.org Cc: libstdc++@gcc.gnu.org, jason@redhat.com, Ken Matsui Subject: [PATCH v17 08/26] libstdc++: Optimize std::is_unbounded_array compilation performance Date: Thu, 2 May 2024 11:42:23 -0700 Message-ID: <20240502184529.97337-9-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240502184529.97337-1-kmatsui@gcc.gnu.org> References: <20240502161614.3705912-1-kmatsui@gcc.gnu.org> <20240502184529.97337-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: 7xDaO0lYflnXhR51ScJFqDb5vjQxAVJv X-Proofpoint-GUID: 7xDaO0lYflnXhR51ScJFqDb5vjQxAVJv X-outbound-smtp: 1 x-header: uw-relay-non-domains X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1011,Hydra:6.0.650,FMLib:17.11.176.26 definitions=2024-05-02_10,2024-05-02_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=553 malwarescore=0 lowpriorityscore=0 impostorscore=0 phishscore=0 spamscore=0 bulkscore=0 clxscore=1034 suspectscore=0 adultscore=0 mlxscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2404010003 definitions=main-2405020125 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 List-Id: This patch optimizes the compilation performance of std::is_unbounded_array by dispatching to the new __builtin_is_unbounded_array trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_unbounded_array_v): Use __builtin_is_unbounded_array trait. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index ea013b4b7bc..0329cd4511e 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -3710,11 +3710,17 @@ template /// True for a type that is an array of unknown bound. /// @ingroup variable_templates /// @since C++20 +# if _GLIBCXX_USE_BUILTIN_TRAIT(__builtin_is_unbounded_array) + template + inline constexpr bool is_unbounded_array_v = + __builtin_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 -- 2.44.0