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Mon, 16 Oct 2023 00:14:37 GMT Received: from mxout25.s.uw.edu (mxout25.s.uw.edu [140.142.234.175]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3tr517ve66-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 16 Oct 2023 00:14:37 +0000 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+UW22.04) with ESMTP id 39G0EGBV005474 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sun, 15 Oct 2023 17:14:16 -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 39G0CSsM032329 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sun, 15 Oct 2023 17:14:16 -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 v20 32/40] libstdc++: Optimize is_arithmetic trait performance Date: Sun, 15 Oct 2023 17:10:16 -0700 Message-ID: <20231016001227.2717180-33-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231016001227.2717180-1-kmatsui@gcc.gnu.org> References: <20231013223957.1634024-1-kmatsui@gcc.gnu.org> <20231016001227.2717180-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: GzSkb03lOSvQzCevGVU6argXWvckosHQ X-Proofpoint-GUID: GzSkb03lOSvQzCevGVU6argXWvckosHQ 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=2023-10-15_09,2023-10-12_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1034 bulkscore=0 mlxlogscore=666 spamscore=0 adultscore=0 phishscore=0 mlxscore=0 malwarescore=0 suspectscore=0 impostorscore=0 priorityscore=1501 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2310160000 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 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+incoming=patchwork.ozlabs.org@gcc.gnu.org This patch optimizes the performance of the is_arithmetic trait by dispatching to the new __is_arithmetic built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_arithmetic): Use __is_arithmetic built-in trait. (is_arithmetic_v): Likewise. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 3acd843f2f2..cc466e0f606 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -726,10 +726,17 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION #endif /// is_arithmetic +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_arithmetic) + template + struct is_arithmetic + : public __bool_constant<__is_arithmetic(_Tp)> + { }; +#else template struct is_arithmetic : public __or_, is_floating_point<_Tp>>::type { }; +#endif /// is_fundamental template @@ -3344,8 +3351,14 @@ template inline constexpr bool is_reference_v<_Tp&&> = true; #endif +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_arithmetic) +template + inline constexpr bool is_arithmetic_v = __is_arithmetic(_Tp); +#else template inline constexpr bool is_arithmetic_v = is_arithmetic<_Tp>::value; +#endif + template inline constexpr bool is_fundamental_v = is_fundamental<_Tp>::value;