From patchwork Fri Sep 15 23:51:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ken Matsui X-Patchwork-Id: 76199 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 4B0B73857C41 for ; Sat, 16 Sep 2023 00:01:07 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 4B0B73857C41 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1694822467; bh=CwlyvDPOmJ6OOvNpdnw7BaxPEtnzz0oDQ2vJDpQNy6k=; h=To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From:Reply-To:From; b=oMHkxa4uB88280Bahxao9FsSqdaNdN/7C2UalAYs7RCs4k2hHJRsGcGBDX7z5cC/l 6j47INGg7FBPZyoMOG28drB1rhOQfuJCQglMoGryki6vUSGYQ+1euBkw/wlZ3Bslgw pDT1dPoTrI41PtJJj6gdwUMVE0Payt7KNqpefXq4= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from mx0a-00641c01.pphosted.com (mx0a-00641c01.pphosted.com [205.220.165.146]) by sourceware.org (Postfix) with ESMTPS id 73DB13856DF2; Fri, 15 Sep 2023 23:54:21 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 73DB13856DF2 Received: from pps.filterd (m0247473.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 38FNpHg7022890; Fri, 15 Sep 2023 23:54:20 GMT Received: from mxout24.cac.washington.edu (mxout24.cac.washington.edu [140.142.234.158]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3t4wvpsxtf-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 15 Sep 2023 23:54:20 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.54]) by mxout24.cac.washington.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 38FNruk7016217 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 15 Sep 2023 16:53:57 -0700 X-Auth-Received: from localhost.localdomain ([10.154.75.179]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW19.10) with ESMTPSA id 38FNrt2d000587 (version=TLSv1.2 cipher=DHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Fri, 15 Sep 2023 16:53:56 -0700 X-UW-Orig-Sender: kmatsui@smtp.washington.edu To: gcc-patches@gcc.gnu.org Cc: libstdc++@gcc.gnu.org, Ken Matsui Subject: [PATCH v14 36/40] libstdc++: Optimize is_unsigned trait performance Date: Fri, 15 Sep 2023 16:51:22 -0700 Message-ID: <20230915235353.19378-37-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230915235353.19378-1-kmatsui@gcc.gnu.org> References: <20230915023640.75216-17-kmatsui@gcc.gnu.org> <20230915235353.19378-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: VbPB27IytlOEvQ3XgFwtd4U9UiBphP-k X-Proofpoint-GUID: VbPB27IytlOEvQ3XgFwtd4U9UiBphP-k X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.980,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-09-15_20,2023-09-15_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 spamscore=0 impostorscore=0 phishscore=0 bulkscore=0 adultscore=0 suspectscore=0 clxscore=1034 priorityscore=1501 malwarescore=0 mlxlogscore=632 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309150214 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, 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: , X-Patchwork-Original-From: Ken Matsui via Gcc-patches From: Ken Matsui Reply-To: Ken Matsui Errors-To: gcc-patches-bounces+patchwork=sourceware.org@gcc.gnu.org Sender: "Gcc-patches" This patch optimizes the performance of the is_unsigned trait by dispatching to the new __is_unsigned built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_unsigned): Use __is_unsigned built-in trait. (is_unsigned_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 48d630a1478..f7d3815f332 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -1001,10 +1001,17 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { }; /// is_unsigned +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_unsigned) + template + struct is_unsigned + : public __bool_constant<__is_unsigned(_Tp)> + { }; +#else template struct is_unsigned : public __and_, __not_>>::type { }; +#endif /// @cond undocumented template @@ -3440,8 +3447,14 @@ template template inline constexpr bool is_signed_v = is_signed<_Tp>::value; + +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_unsigned) +template + inline constexpr bool is_unsigned_v = __is_unsigned(_Tp); +#else template inline constexpr bool is_unsigned_v = is_unsigned<_Tp>::value; +#endif template inline constexpr bool is_constructible_v = __is_constructible(_Tp, _Args...);