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server2.sourceware.org Received: from pps.filterd (m0247477.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 40B498it031209; Thu, 11 Jan 2024 04:14:47 GMT Received: from mxout25.s.uw.edu (mxout25.s.uw.edu [140.142.234.175]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3vj5p9h1b7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 11 Jan 2024 04:14:46 +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 40B4EP61012309 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 10 Jan 2024 20:14:25 -0800 X-Auth-Received: from kmatsui-ThinkPad-X1-Carbon-Gen-9.dhcp4.washington.edu ([10.154.74.143]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW19.10) with ESMTPSA id 40B4EPeA031435 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 10 Jan 2024 20:14:25 -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: [committed] libstdc++: Optimize std::is_compound compilation performance Date: Wed, 10 Jan 2024 20:14:16 -0800 Message-ID: <20240111041416.4172875-1-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <6iya7iiwgudfkg7ivmcwbaoz7zykkcurxiyddpiwl2oscgbnaw@txni3qzp5gkt> References: <6iya7iiwgudfkg7ivmcwbaoz7zykkcurxiyddpiwl2oscgbnaw@txni3qzp5gkt> MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: Z1457wnorvyfxEHJw0hiXpl5PU8BXdF8 X-Proofpoint-GUID: Z1457wnorvyfxEHJw0hiXpl5PU8BXdF8 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_14,2024-01-10_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 suspectscore=0 adultscore=0 priorityscore=1501 mlxscore=0 bulkscore=0 spamscore=0 clxscore=1034 impostorscore=0 mlxlogscore=473 lowpriorityscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2401110031 X-Spam-Status: No, score=-12.7 required=5.0 tests=BAYES_00, 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_compound. libstdc++-v3/ChangeLog: * include/std/type_traits (is_compound): Do not use __not_. (is_compound_v): Use is_fundamental_v instead. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 1cec0822b73..b6b680a3c58 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -751,7 +751,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION /// is_compound template struct is_compound - : public __not_>::type { }; + : public __bool_constant::value> { }; /// is_member_pointer #if _GLIBCXX_USE_BUILTIN_TRAIT(__is_member_pointer) @@ -3305,7 +3305,7 @@ template template inline constexpr bool is_scalar_v = is_scalar<_Tp>::value; template - inline constexpr bool is_compound_v = is_compound<_Tp>::value; + inline constexpr bool is_compound_v = !is_fundamental_v<_Tp>; #if _GLIBCXX_USE_BUILTIN_TRAIT(__is_member_pointer) template