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 AFA253945C23; Tue, 17 Oct 2023 11:43:52 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org AFA253945C23 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 AFA253945C23 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=1697543036; cv=none; b=j053RW4a8IbMeEqsO63tBi2GNXxaQPu2Y2Rm4tFNuuRGdSw0PuJci9/Xx7Dl6RgUP4+7tMTO2ZBCbiq2AZz3f1EqnvkCCW4ulOA45ObwEjcHuBguZYnkb6T/YnWQ9tRk3vyHiE3a+kkCt8I6Kvy5mJFcwjwvf/feQNqMVrG8FCw= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1697543036; c=relaxed/simple; bh=LWlpKAqSPh2SZMP3ObLq+s/FTCguucm8HDdrx5fwRp8=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=LG0NgBh3AjRKBoQHwlGWkvURqlEWAICxYrAAu0u49QuSF4UjzdHiPSzk+3usLOCXd8QWLevMng4Z1kZ9WWKNgSicG8GocUJhjiwR+W05++3eAaulMJe10ZRlQUE/HgVWQRscwbPtHwIBCT9arUiQXBsjqWOuVkGJmE4RhCQo37o= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from pps.filterd (m0247472.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 39HBfDWs031359; Tue, 17 Oct 2023 11:43:51 GMT Received: from mxout21.s.uw.edu (mxout21.s.uw.edu [140.142.32.139]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3tsf8x2ff5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 17 Oct 2023 11:43:51 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.132]) by mxout21.s.uw.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 39HBhhKi032353 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 17 Oct 2023 04:43:43 -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 39HBchGC020891 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 17 Oct 2023 04:43:42 -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 v22 09/31] libstdc++: Optimize std::is_array compilation performance Date: Tue, 17 Oct 2023 04:36:30 -0700 Message-ID: <20231017113822.677344-10-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231017113822.677344-1-kmatsui@gcc.gnu.org> References: <20231017113242.664523-1-kmatsui@gcc.gnu.org> <20231017113822.677344-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: lRJPLwxA2OQGC8AG2ACcAY9nRZoDq67B X-Proofpoint-ORIG-GUID: lRJPLwxA2OQGC8AG2ACcAY9nRZoDq67B 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 suspectscore=0 mlxlogscore=526 malwarescore=0 bulkscore=0 impostorscore=0 spamscore=0 clxscore=1034 mlxscore=0 adultscore=0 phishscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2310170098 X-Spam-Status: No, score=-13.0 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 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_array by dispatching to the new __is_array built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_array): Use __is_array built-in trait. (is_array_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 c01f65df22b..4e8165e5af5 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -523,6 +523,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { }; /// is_array +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_array) + template + struct is_array + : public __bool_constant<__is_array(_Tp)> + { }; +#else template struct is_array : public false_type { }; @@ -534,6 +540,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template struct is_array<_Tp[]> : public true_type { }; +#endif template struct __is_pointer_helper @@ -3183,12 +3190,17 @@ template template inline constexpr bool is_floating_point_v = is_floating_point<_Tp>::value; +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_array) +template + inline constexpr bool is_array_v = __is_array(_Tp); +#else template inline constexpr bool is_array_v = false; template inline constexpr bool is_array_v<_Tp[]> = true; template inline constexpr bool is_array_v<_Tp[_Num]> = true; +#endif template inline constexpr bool is_pointer_v = is_pointer<_Tp>::value; -- 2.42.0