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Sun, 2 Apr 2023 07:53:47 GMT Received: from mxout22.s.uw.edu (mxout22.s.uw.edu [128.95.242.222]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3ppx7r1h0w-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sun, 02 Apr 2023 07:53:46 +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 3327rLpE009041 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sun, 2 Apr 2023 00:53:21 -0700 X-Auth-Received: from localhost.localdomain ([10.154.74.245]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW19.10) with ESMTPSA id 3327rKKf003104 (version=TLSv1.2 cipher=DHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Sun, 2 Apr 2023 00:53:21 -0700 X-UW-Orig-Sender: kmatsui@smtp.washington.edu To: gcc-patches@gcc.gnu.org Cc: libstdc++@gcc.gnu.org, Ken Matsui Subject: [PATCH v3 0/6] c++, libstdc++: get std::is_object to dispatch to new built-in traits Date: Sun, 2 Apr 2023 00:53:08 -0700 Message-Id: <20230402075314.39853-1-kmatsui@cs.washington.edu> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230330183911.12640-1-kmatsui@cs.washington.edu> References: <20230330183911.12640-1-kmatsui@cs.washington.edu> MIME-Version: 1.0 X-Proofpoint-GUID: d8kneNdnuGmR3h4IelhN1UOb_-qwbhD7 X-Proofpoint-ORIG-GUID: d8kneNdnuGmR3h4IelhN1UOb_-qwbhD7 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-03-31_07,2023-03-31_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 adultscore=0 mlxlogscore=776 impostorscore=0 malwarescore=0 priorityscore=1501 phishscore=0 mlxscore=0 suspectscore=0 clxscore=1015 lowpriorityscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304020070 X-Spam-Status: No, score=-8.0 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, RCVD_IN_DNSWL_LOW, SPF_HELO_NONE, SPF_PASS, 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 X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Ken Matsui via Gcc-patches From: Ken Matsui Reply-To: Ken Matsui Errors-To: gcc-patches-bounces+incoming=patchwork.ozlabs.org@gcc.gnu.org Sender: "Gcc-patches" Hi, This patch series gets std::is_object to dispatch to built-in traits and implements the following built-in traits, on which std::object depends. * __is_reference * __is_function * __is_void std::is_object was depending on them with disjunction and negation. __not_<__or_, is_reference<_Tp>, is_void<_Tp>>>::type Therefore, this patch uses them directly instead of implementing an additional built-in trait __is_object, which makes the compiler slightly bigger and slower. __bool_constant This would instantiate only __bool_constant and __bool_constant, which can be mostly shared. That is, the purpose of built-in traits is considered as achieved. Changes in v3 * Dropped the patch to use new built-in trait __is_void for std::is_void since we know that explicit specializations are faster than built-ins. Ken Matsui (6): c++: implement __is_reference built-in trait libstdc++: use new built-in trait __is_reference for std::is_reference c++: implement __is_function built-in trait libstdc++: use new built-in trait __is_function for std::is_function c++, libstdc++: implement __is_void built-in trait libstdc++: make std::is_object dispatch to new built-in traits gcc/cp/constraint.cc | 9 +++ gcc/cp/cp-trait.def | 3 + gcc/cp/semantics.cc | 12 ++++ gcc/testsuite/g++.dg/ext/has-builtin-1.C | 9 +++ gcc/testsuite/g++.dg/ext/is_function.C | 58 +++++++++++++++++++ gcc/testsuite/g++.dg/ext/is_reference.C | 34 +++++++++++ gcc/testsuite/g++.dg/ext/is_void.C | 35 +++++++++++ gcc/testsuite/g++.dg/tm/pr46567.C | 6 +- libstdc++-v3/include/bits/cpp_type_traits.h | 15 ----- libstdc++-v3/include/debug/helper_functions.h | 5 +- libstdc++-v3/include/std/type_traits | 23 ++++++++ 11 files changed, 188 insertions(+), 21 deletions(-) create mode 100644 gcc/testsuite/g++.dg/ext/is_function.C create mode 100644 gcc/testsuite/g++.dg/ext/is_reference.C create mode 100644 gcc/testsuite/g++.dg/ext/is_void.C