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Wed, 10 Jan 2024 11:40:42 -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 04/14] libstdc++: Optimize std::is_floating_point compilation performance Date: Wed, 10 Jan 2024 01:22:55 -0800 Message-ID: <20240110194031.2384005-5-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240110194031.2384005-1-kmatsui@gcc.gnu.org> References: <20240110194031.2384005-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 X-Proofpoint-GUID: m1-vzlpp1bij5wp0T7LRH7YIfaHfTOwd X-Proofpoint-ORIG-GUID: m1-vzlpp1bij5wp0T7LRH7YIfaHfTOwd 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=2024-01-10_10,2024-01-10_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 malwarescore=0 lowpriorityscore=0 bulkscore=0 spamscore=0 adultscore=0 impostorscore=0 phishscore=0 clxscore=1034 mlxlogscore=380 mlxscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2401100156 X-Spam-Status: No, score=-11.8 required=5.0 tests=BAYES_00, DATE_IN_PAST_06_12, GIT_PATCH_0, JMQ_SPF_NEUTRAL, KAM_DMARC_STATUS, RCVD_IN_DNSWL_NONE, 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+patchwork=sourceware.org@gcc.gnu.org This patch optimizes the compilation performance of std::is_floating_point by dispatching to the new __is_floating_point built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_floating_point): Use __is_floating_point built-in trait. (is_floating_point_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 afa281d9cc4..23ea70eca18 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -470,6 +470,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { }; #endif +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_floating_point) + /// is_floating_point + template + struct is_floating_point + : public __bool_constant<__is_floating_point(_Tp)> + { }; +#else /// @cond undocumented template struct __is_floating_point_helper @@ -529,6 +536,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct is_floating_point : public __is_floating_point_helper<__remove_cv_t<_Tp>>::type { }; +#endif /// is_array #if _GLIBCXX_USE_BUILTIN_TRAIT(__is_array) @@ -3238,8 +3246,13 @@ template inline constexpr bool is_integral_v = is_integral<_Tp>::value; #endif +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_floating_point) +template + inline constexpr bool is_floating_point_v = __is_floating_point(_Tp); +#else template inline constexpr bool is_floating_point_v = is_floating_point<_Tp>::value; +#endif #if _GLIBCXX_USE_BUILTIN_TRAIT(__is_array) template