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Thu, 07 Dec 2023 05:46:36 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.54]) by mxout25.s.uw.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 3B75kFLS011050 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 6 Dec 2023 21:46:16 -0800 X-Auth-Received: from kmatsui-ThinkPad-X1-Carbon-Gen-9.dhcp4.washington.edu ([10.154.75.142]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW19.10) with ESMTPSA id 3B75adQC020981 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 6 Dec 2023 21:46:15 -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 v26 11/23] libstdc++: Optimize std::is_member_pointer compilation performance Date: Wed, 6 Dec 2023 21:33:06 -0800 Message-ID: <20231207053633.1001720-12-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231207053633.1001720-1-kmatsui@gcc.gnu.org> References: <20231024020424.699427-1-kmatsui@gcc.gnu.org> <20231207053633.1001720-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: aH9CZ7g__H8MkoCHt2jOPymbVW-Poopz X-Proofpoint-GUID: aH9CZ7g__H8MkoCHt2jOPymbVW-Poopz X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-07_03,2023-12-06_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 spamscore=0 priorityscore=1501 impostorscore=0 phishscore=0 mlxscore=0 bulkscore=0 clxscore=1034 malwarescore=0 mlxlogscore=525 suspectscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2312070043 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, 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+ouuuleilei=gmail.com@gcc.gnu.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1780601103665571273 X-GMAIL-MSGID: 1784600895602269585 This patch optimizes the compilation performance of std::is_member_pointer by dispatching to the new __is_member_pointer built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_member_pointer): Use __is_member_pointer built-in trait. (is_member_pointer_v): Likewise. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 4a5068791af..4ab1d29ff51 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -716,6 +716,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct is_compound : public __not_>::type { }; + /// is_member_pointer +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_member_pointer) + template + struct is_member_pointer + : public __bool_constant<__is_member_pointer(_Tp)> + { }; +#else /// @cond undocumented template struct __is_member_pointer_helper @@ -726,11 +733,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION : public true_type { }; /// @endcond - /// is_member_pointer template struct is_member_pointer : public __is_member_pointer_helper<__remove_cv_t<_Tp>>::type { }; +#endif template struct is_same; @@ -3228,8 +3235,15 @@ template inline constexpr bool is_scalar_v = is_scalar<_Tp>::value; template inline constexpr bool is_compound_v = is_compound<_Tp>::value; + +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_member_pointer) +template + inline constexpr bool is_member_pointer_v = __is_member_pointer(_Tp); +#else template inline constexpr bool is_member_pointer_v = is_member_pointer<_Tp>::value; +#endif + template inline constexpr bool is_const_v = false; template