From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-00641c01.pphosted.com (mx0b-00641c01.pphosted.com [205.220.177.146]) by sourceware.org (Postfix) with ESMTPS id 868EA3857709; Fri, 13 Oct 2023 21:37:17 +0000 (GMT) ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 868EA3857709 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=205.220.177.146 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1697233038; cv=none; b=Bnb3AFLUH7t4oYnv6DFK6w9iSmk1rLyNjS3xHIxEqPd1KE7t7o/+ULCdSsCQ0+Wx41KhYu5dIct2BmkU5Az93Urflk+cyw6wyrbVaWJve7Wvz2zbH9em0emM+c/AJmh+5LS329nOChGKG9dgmuZbgKh9rxIqiJEmLTfcgojq8Y0= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1697233038; c=relaxed/simple; bh=fm6aTmzL/u+DvSJqIIKZX3rAVzVD2tqarjJM/UYhTyo=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=E/LB7w0NnFb4eMyLNjjaEkfWf+dTFE2h2cGQxlSJiBkVBdJ943kjVW58YpGoaJ5pbfB6XOiJ0SI9BPr+jqnAVNEwG4ITF68iU8he8zlFZoTdYJF8LHleLf5s+d+ioOlQZTs33cFj34TSsYaEzVGD1YUFE8TSUEgUEnfBMno0v/Y= ARC-Authentication-Results: i=1; server2.sourceware.org DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 868EA3857709 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=gcc.gnu.org Authentication-Results: sourceware.org; spf=fail smtp.mailfrom=gcc.gnu.org Received: from pps.filterd (m0247479.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 39DLZQTd010223; Fri, 13 Oct 2023 21:37:17 GMT Received: from mxout24.cac.washington.edu (mxout24.cac.washington.edu [140.142.234.158]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3tqc2094st-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Oct 2023 21:37:16 +0000 Received: from smtp.washington.edu (smtp.washington.edu [140.142.234.157]) by mxout24.cac.washington.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 39DLb1IU016143 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 13 Oct 2023 14:37:01 -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 39DLC9cf009146 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Oct 2023 14:37:01 -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 v18 38/40] libstdc++: Optimize is_signed trait performance Date: Fri, 13 Oct 2023 14:04:34 -0700 Message-ID: <20231013211206.1215663-39-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231013211206.1215663-1-kmatsui@gcc.gnu.org> References: <20231011215049.1052142-1-kmatsui@gcc.gnu.org> <20231013211206.1215663-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: Bg3b7CY19w8teEhWhVz3O98ZyMXMfwQG X-Proofpoint-GUID: Bg3b7CY19w8teEhWhVz3O98ZyMXMfwQG 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=2023-10-13_12,2023-10-12_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 phishscore=0 malwarescore=0 bulkscore=0 priorityscore=1501 mlxlogscore=611 suspectscore=0 adultscore=0 clxscore=1034 mlxscore=0 spamscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2310130187 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 autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: This patch optimizes the performance of the is_signed trait by dispatching to the new __is_signed built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_signed): Use __is_signed built-in trait. (is_signed_v): Likewise. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index f7d3815f332..7e93923f44b 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -982,6 +982,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION : public __bool_constant<__is_abstract(_Tp)> { }; + /// is_signed +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_signed) + template + struct is_signed + : public __bool_constant<__is_signed(_Tp)> + { }; +#else /// @cond undocumented template::value> @@ -994,11 +1001,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { }; /// @endcond - /// is_signed template struct is_signed : public __is_signed_helper<_Tp>::type { }; +#endif /// is_unsigned #if _GLIBCXX_USE_BUILTIN_TRAIT(__is_unsigned) @@ -3445,8 +3452,13 @@ template template inline constexpr bool is_final_v = __is_final(_Tp); +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_signed) +template + inline constexpr bool is_signed_v = __is_signed(_Tp); +#else template inline constexpr bool is_signed_v = is_signed<_Tp>::value; +#endif #if _GLIBCXX_USE_BUILTIN_TRAIT(__is_unsigned) template -- 2.42.0