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 9BA153856DFB; Tue, 17 Oct 2023 11:36:03 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 9BA153856DFB 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 9BA153856DFB 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=1697542570; cv=none; b=sqde8r8SM78y3soYrFFHFHwh9gvqTFexDqLNfk/8uYCyybGjO5javNWgRXurkP8CoGqpSuvQ2b2xzUJiLIv6zv7+T5I+BfMEc8LDQYliyuczJtuM+9E5q6bShIlbxPd5Gudl7CRARJtJqBPNDIV4kJJx3Y+omhTLQWGbDLHDGoc= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1697542570; c=relaxed/simple; bh=K00IDF5zEbYHxaGvNxA8OxHa/yILcGh6RlZf6vWDaAo=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=egqHl112KOty0yjp65oq86dcvDvfB15cc0RzCBV6ORQTm3uA11RrqR2Abmn7HAYA5LDvbifo6aNfCSkflByv7Bcihvf8ihvlvkWWSbLXm4pn9ox3LWrwxB8927VHQw0KvVwO5sJKkp3WdxFXMn650do36Yna4PpVF5ai5qZW+Vg= 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 39HBX14L015407; Tue, 17 Oct 2023 11:36:03 GMT Received: from mxout26.s.uw.edu (mxout26.s.uw.edu [140.142.234.176]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3tsausw4hu-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 17 Oct 2023 11:36:03 +0000 Received: from smtp.washington.edu (smtp.washington.edu [140.142.234.157]) by mxout26.s.uw.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 39HBZjas012235 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 17 Oct 2023 04:35:45 -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 39HBWiMN001840 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 17 Oct 2023 04:35:45 -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 v21 10/30] libstdc++: Optimize std::is_unbounded_array compilation performance Date: Tue, 17 Oct 2023 04:27:41 -0700 Message-ID: <20231017113242.664523-11-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231017113242.664523-1-kmatsui@gcc.gnu.org> References: <20231016001227.2717180-1-kmatsui@gcc.gnu.org> <20231017113242.664523-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: Ysee1G3iYiePXBrFlpph5rPeWcSTKWkL X-Proofpoint-ORIG-GUID: Ysee1G3iYiePXBrFlpph5rPeWcSTKWkL 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=2023-10-16_13,2023-10-17_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 mlxscore=0 bulkscore=0 spamscore=0 impostorscore=0 mlxlogscore=556 priorityscore=1501 clxscore=1034 adultscore=0 phishscore=0 suspectscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2310170097 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 __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 4e8165e5af5..cb3d9e238fa 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -3541,11 +3541,16 @@ 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 -- 2.42.0