From patchwork Mon Feb 19 13:51:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ken Matsui X-Patchwork-Id: 85968 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 81B0D386C594 for ; Mon, 19 Feb 2024 13:52:43 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 81B0D386C594 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1708350763; bh=QYugRasLyMLk3LT6NMwu3UR8R5wXBiWa7MZ/JvH9Kyc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=SeJfZb22e4dSUJrpCONjjz2CR5bJeBRW2CHo+5JqR/lcOe3sY07K/0lUkZjK3Hbcn LFUMdhwXST07wEZwije3B9ZX4GO9eyurJckvdmWdOW/H4EU5024DAsA0MasllF403S mCStL3WeJzeRdT1J8TXj8LvxoXR9M3FF1MA6h9gA= 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 18E51384F00A; Mon, 19 Feb 2024 13:51:39 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 18E51384F00A 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 18E51384F00A 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=1708350701; cv=none; b=ex3eNJX4chvjIsbfgNZNrNsjYC2djflT85NE3gnnN3lU2c1enryaDxV25fE4uAI/WFRBsVQZ/IToY7gsk9Bl+UPjAKnqmLAq8PTvinyIrDZh4Wc/RPWc7ZPSAlW6EY+NXTFhThK+nHW0WN3dR9cCB+lVDyjqejz/CYnlQCIxS9M= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1708350701; c=relaxed/simple; bh=fgJcJYLzf/As3rlsk6dSpoHw89Qd6uC0qFj/SXaILuo=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=JFVF3/jaV/jVRkYgFHxSixcz4tuhYVLk2dS1xT/EsxHu/8+vVU6Cq1fsjA2pyFN6Fp/+AqR9PgM2N5V7YB08RChP3krA7ww+3rYaRbH7mW5mn8PRNEyWsw8YHWk7doSV6D149AWRx/N7RB9ZBFYYTMowz4p+alQZQriLFAzK5I4= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from pps.filterd (m0247479.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 41JDmnkv011923; 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 3wb6dpexhp-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 41JDpapg001136 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 19 Feb 2024 05:51:36 -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 41JDpZRQ001026 (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 08/22] libstdc++: Optimize std::is_unbounded_array compilation performance Date: Mon, 19 Feb 2024 05:51:15 -0800 Message-ID: <20240219135129.3635809-8-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-ORIG-GUID: Vaxmt2aT7zEtKKL-9ZkCe-otP05S0wQq X-Proofpoint-GUID: Vaxmt2aT7zEtKKL-9ZkCe-otP05S0wQq 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 clxscore=1034 adultscore=0 spamscore=0 suspectscore=0 mlxlogscore=405 bulkscore=0 impostorscore=0 malwarescore=0 priorityscore=1501 lowpriorityscore=0 phishscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402190103 X-Spam-Status: No, score=-13.3 required=5.0 tests=BAYES_00, GIT_PATCH_0, JMQ_SPF_NEUTRAL, KAM_DMARC_STATUS, RCVD_IN_DNSWL_LOW, 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+patchwork=sourceware.org@gcc.gnu.org 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 6407738a726..c4585a23df9 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -3706,11 +3706,16 @@ 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