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 1B95C384AB7D; Thu, 2 May 2024 18:45:48 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 1B95C384AB7D 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 1B95C384AB7D 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=1714675576; cv=none; b=KfR+clemqNwV0rzXyhH9ZufYlP9eD4NoUOll/tfEiXTClpo6GGVj6wJRDsUKZZbiwoXR5tE0DOA0aku6D0EwKCSxPmW3CwyncI0LQzN2dBFnL9j9uO5137sHwJELCB9dxOvA4Zj+o93egyKnxVGEGBlWFYDPhwzWrbDfXI2UjCY= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1714675576; c=relaxed/simple; bh=39D9nTuEZDFWO56lsAswkWQPCcjhDnZ6JDa314YQh30=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=vKnDtNNs8n5CH47XCdsyabaQA71g7l9XnNg5Wv/FTrCY4slEG3yvTcIcEdck+3KFfZY90XfNVQoVx4hP/iEfTfeY851/LaJx6kdwCysvnG9dC8VQ5UaU/AQYjGjNkKOYiydTWa4lQ2FmGPBw4+cN5O8tysfEqnS77s/2EAtf6z8= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from pps.filterd (m0247480.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 442IVxvT023225; 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 3xvf558s0q-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 442IjY3H020183 (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 442IjVx4032283 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 2 May 2024 11:45:34 -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 15/26] c++: Implement __add_lvalue_reference built-in trait Date: Thu, 2 May 2024 11:42:30 -0700 Message-ID: <20240502184529.97337-16-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-GUID: SYGxMjXHJDJjJhNCRKQDC9pASYh7QH8Q X-Proofpoint-ORIG-GUID: SYGxMjXHJDJjJhNCRKQDC9pASYh7QH8Q 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 spamscore=0 mlxscore=0 priorityscore=1501 clxscore=1034 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 mlxlogscore=949 adultscore=0 lowpriorityscore=0 impostorscore=0 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 implements built-in trait for std::add_lvalue_reference. gcc/cp/ChangeLog: * cp-trait.def: Define __add_lvalue_reference. * semantics.cc (finish_trait_type): Handle CPTK_ADD_LVALUE_REFERENCE. gcc/testsuite/ChangeLog: * g++.dg/ext/has-builtin-1.C: Test existence of __add_lvalue_reference. * g++.dg/ext/add_lvalue_reference.C: New test. Signed-off-by: Ken Matsui --- gcc/cp/cp-trait.def | 1 + gcc/cp/semantics.cc | 6 ++++++ .../g++.dg/ext/add_lvalue_reference.C | 21 +++++++++++++++++++ gcc/testsuite/g++.dg/ext/has-builtin-1.C | 3 +++ 4 files changed, 31 insertions(+) create mode 100644 gcc/testsuite/g++.dg/ext/add_lvalue_reference.C diff --git a/gcc/cp/cp-trait.def b/gcc/cp/cp-trait.def index be5b977986c..665aea6e03f 100644 --- a/gcc/cp/cp-trait.def +++ b/gcc/cp/cp-trait.def @@ -48,6 +48,7 @@ #define DEFTRAIT_TYPE_DEFAULTED #endif +DEFTRAIT_TYPE (ADD_LVALUE_REFERENCE, "__add_lvalue_reference", 1) DEFTRAIT_TYPE (ADD_POINTER, "__add_pointer", 1) DEFTRAIT_EXPR (HAS_NOTHROW_ASSIGN, "__has_nothrow_assign", 1) DEFTRAIT_EXPR (HAS_NOTHROW_CONSTRUCTOR, "__has_nothrow_constructor", 1) diff --git a/gcc/cp/semantics.cc b/gcc/cp/semantics.cc index 07779a79d24..9f2220a1a91 100644 --- a/gcc/cp/semantics.cc +++ b/gcc/cp/semantics.cc @@ -12920,6 +12920,12 @@ finish_trait_type (cp_trait_kind kind, tree type1, tree type2, switch (kind) { + case CPTK_ADD_LVALUE_REFERENCE: + /* [meta.trans.ref]. */ + if (referenceable_type_p (type1)) + return cp_build_reference_type (type1, /*rval=*/false); + return type1; + case CPTK_ADD_POINTER: /* [meta.trans.ptr]. */ if (VOID_TYPE_P (type1) || referenceable_type_p (type1)) diff --git a/gcc/testsuite/g++.dg/ext/add_lvalue_reference.C b/gcc/testsuite/g++.dg/ext/add_lvalue_reference.C new file mode 100644 index 00000000000..8fe1e0300e5 --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/add_lvalue_reference.C @@ -0,0 +1,21 @@ +// { dg-do compile { target c++11 } } + +#define SA(X) static_assert((X),#X) + +class ClassType { }; + +SA(__is_same(__add_lvalue_reference(int), int&)); +SA(__is_same(__add_lvalue_reference(int&), int&)); +SA(__is_same(__add_lvalue_reference(const int), const int&)); +SA(__is_same(__add_lvalue_reference(int*), int*&)); +SA(__is_same(__add_lvalue_reference(ClassType&), ClassType&)); +SA(__is_same(__add_lvalue_reference(ClassType), ClassType&)); +SA(__is_same(__add_lvalue_reference(int(int)), int(&)(int))); +SA(__is_same(__add_lvalue_reference(int&&), int&)); +SA(__is_same(__add_lvalue_reference(ClassType&&), ClassType&)); +SA(__is_same(__add_lvalue_reference(void), void)); +SA(__is_same(__add_lvalue_reference(const void), const void)); +SA(__is_same(__add_lvalue_reference(bool(int) const), bool(int) const)); +SA(__is_same(__add_lvalue_reference(bool(int) &), bool(int) &)); +SA(__is_same(__add_lvalue_reference(bool(int) const &&), bool(int) const &&)); +SA(__is_same(__add_lvalue_reference(bool(int)), bool(&)(int))); diff --git a/gcc/testsuite/g++.dg/ext/has-builtin-1.C b/gcc/testsuite/g++.dg/ext/has-builtin-1.C index 6f10a917f63..4fcf41702f1 100644 --- a/gcc/testsuite/g++.dg/ext/has-builtin-1.C +++ b/gcc/testsuite/g++.dg/ext/has-builtin-1.C @@ -2,6 +2,9 @@ // { dg-do compile } // Verify that __has_builtin gives the correct answer for C++ built-ins. +#if !__has_builtin (__add_lvalue_reference) +# error "__has_builtin (__add_lvalue_reference) failed" +#endif #if !__has_builtin (__add_pointer) # error "__has_builtin (__add_pointer) failed" #endif -- 2.44.0