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server2.sourceware.org Received: from pps.filterd (m0247474.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 41L9GMEv018415; Wed, 21 Feb 2024 09:37:03 GMT Received: from mxout26.s.uw.edu (mxout26.s.uw.edu [140.142.234.176]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3wd56mb6rx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 21 Feb 2024 09:37:02 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.132]) by mxout26.s.uw.edu (8.14.4+UW20.07/8.14.4+UW24.02) with ESMTP id 41L9aLpA000598 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 21 Feb 2024 01:36:21 -0800 X-Auth-Received: from kmatsui-ThinkPad-X1-Carbon-Gen-9.dhcp4.washington.edu ([10.154.74.128]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW24.02) with ESMTPSA id 41L9aJVm002942 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 21 Feb 2024 01:36:21 -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 v13 22/26] libstdc++: Optimize std::rank compilation performance Date: Wed, 21 Feb 2024 01:36:12 -0800 Message-ID: <20240221093616.4001742-22-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240221093616.4001742-1-kmatsui@gcc.gnu.org> References: <20240221085142.3779280-26-kmatsui@gcc.gnu.org> <20240221093616.4001742-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: BKsKd-T3UZBE8tiPzoSQooslPXFyW5sE X-Proofpoint-GUID: BKsKd-T3UZBE8tiPzoSQooslPXFyW5sE X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-20_06,2024-02-20_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1034 lowpriorityscore=0 priorityscore=1501 phishscore=0 spamscore=0 mlxlogscore=782 impostorscore=0 malwarescore=0 adultscore=0 bulkscore=0 mlxscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402210075 X-Spam-Status: No, score=-12.8 required=5.0 tests=BAYES_00, GIT_PATCH_0, JMQ_SPF_NEUTRAL, KAM_DMARC_STATUS, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, 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::rank by dispatching to the new __rank built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (rank): Use __rank built-in trait. (rank_v): Likewise. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 2f4c8dd3b21..1577042a5b8 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -1473,6 +1473,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION }; /// rank +#if _GLIBCXX_USE_BUILTIN_TRAIT(__rank) + template + struct rank + : public integral_constant { }; +#else template struct rank : public integral_constant { }; @@ -1484,6 +1489,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template struct rank<_Tp[]> : public integral_constant::value> { }; +#endif /// extent template @@ -3579,12 +3585,17 @@ template template inline constexpr size_t alignment_of_v = alignment_of<_Tp>::value; +#if _GLIBCXX_USE_BUILTIN_TRAIT(__rank) +template + inline constexpr size_t rank_v = __rank(_Tp); +#else template inline constexpr size_t rank_v = 0; template inline constexpr size_t rank_v<_Tp[_Size]> = 1 + rank_v<_Tp>; template inline constexpr size_t rank_v<_Tp[]> = 1 + rank_v<_Tp>; +#endif template inline constexpr size_t extent_v = 0;