Message ID | 20230915022305.74083-29-kmatsui@gcc.gnu.org |
---|---|
State | Unresolved |
Headers |
Return-Path: <gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org> Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:612c:172:b0:3f2:4152:657d with SMTP id h50csp756029vqi; Thu, 14 Sep 2023 19:25:16 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGf63wOp6nX8XG8xOIHAnisOBaNoshhSHvXfbDUeTpZrTUgiKhhl15x/8tRwZFeUC8X6jfM X-Received: by 2002:a05:6402:184f:b0:52d:faa6:8ae3 with SMTP id v15-20020a056402184f00b0052dfaa68ae3mr191592edy.31.1694744715827; Thu, 14 Sep 2023 19:25:15 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1694744715; cv=none; d=google.com; s=arc-20160816; b=a5dgq3jX+awOHxr2XANdx5PVxo/Wq7D1b4VWl/YwYrtSdocjST9etpqH+SuHcsDGfH FRjWnnDlE8SPLO2bEL+iorHuSmywkIo5gsJaWjidJz+tPrmqq5gY3Gb7BjjaEDWLijvG MQvRt3ToWp1aXBS29Xj4KXG8UIrt/rbniIX9Y1wosAPVKPjQBoEiNbDnRTXI3wObMOt+ bUToeLxN0+Xvh24DUHtfptvipjcQIiUjLRtCamTgVM3S1lmZe1Z8gXSFpATs89Ow2Fwn sc7sjgjr6wCgkN97KJe5voglwpPW0ntWPTw6eZWBixM5x31fGGzsI3b2pTFufx5L9z5J ZRRg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:reply-to:from:list-subscribe:list-help:list-post :list-archive:list-unsubscribe:list-id:precedence :content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:dmarc-filter:delivered-to :dkim-signature:dkim-filter; bh=f4PdqFin8j8p+uNqRVj8xt6YE09pyx26yFWZKrFmZZU=; fh=kSSy/oyUXqQD15FLeKdymIgDBFPFITPA1Gj52CNOxRQ=; b=iXoctVsuqmiyMNcWmxi2zjpWPmLFRej0EpVltPt3D6lriVCfvfNXnXveGkmoqO9Cyc zZbz8/4Xum1p30b9N8T21YnLQvVThghuWTzaJdjOCvAAs4J+tONCG+RVooa4T5PQrBVg k9wQcEwkvrhCwvaIVWwk/hpOypAeToWmS57/6ZjgW/noMcAV8bPh24CyheGgCYxl3Tut LQkN+aBuJTKozVaUwWhQiu4zYsjKjuJlAixd1FiXGeQCRHrQadGKOK+JNP26KhGdtLRC FMK56kvn2lKwnXx2FYwMLYi2NSDjEvcYb4Qi/j4AGkj5RPoXbs1SrvBFj92wDE0buhKU fY5A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gcc.gnu.org header.s=default header.b=qCp5R+O2; spf=pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 2620:52:3:1:0:246e:9693:128c as permitted sender) smtp.mailfrom="gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gnu.org Received: from server2.sourceware.org (server2.sourceware.org. [2620:52:3:1:0:246e:9693:128c]) by mx.google.com with ESMTPS id c16-20020aa7df10000000b005253f116480si2427872edy.613.2023.09.14.19.25.15 for <ouuuleilei@gmail.com> (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Sep 2023 19:25:15 -0700 (PDT) Received-SPF: pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 2620:52:3:1:0:246e:9693:128c as permitted sender) client-ip=2620:52:3:1:0:246e:9693:128c; Authentication-Results: mx.google.com; dkim=pass header.i=@gcc.gnu.org header.s=default header.b=qCp5R+O2; spf=pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 2620:52:3:1:0:246e:9693:128c as permitted sender) smtp.mailfrom="gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gnu.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id D74513857354 for <ouuuleilei@gmail.com>; Fri, 15 Sep 2023 02:24:20 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org D74513857354 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1694744660; bh=f4PdqFin8j8p+uNqRVj8xt6YE09pyx26yFWZKrFmZZU=; 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=qCp5R+O27NawWNYBPrIX9B9UTn3U8p7HP2z+D/RC1EWrv/nFVrIpbKECQxBKbH+vx 71LBlFrpmjswgljgua70IaNeZSg1lpQNWCEGlJEmGomwAogpa1lZGUnvyJ0wtrj3l5 Ho1tMz2TJXSVndJyA4YpoAqDplL5R6NTdw9+VIyo= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from mx0b-00641c01.pphosted.com (mx0b-00641c01.pphosted.com [205.220.177.146]) by sourceware.org (Postfix) with ESMTPS id 564573858C33; Fri, 15 Sep 2023 02:23:12 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 564573858C33 Received: from pps.filterd (m0247478.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 38F2Hvna006543; Fri, 15 Sep 2023 02:23:11 GMT Received: from mxout23.cac.washington.edu (mxout23.cac.washington.edu [140.142.32.140]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3t48y92b4d-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 15 Sep 2023 02:23:11 +0000 Received: from smtp.washington.edu (smtp.washington.edu [140.142.234.157]) by mxout23.cac.washington.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 38F2N9Eg022496 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 14 Sep 2023 19:23:09 -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 38F2N6JL031819 (version=TLSv1.2 cipher=DHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Thu, 14 Sep 2023 19:23:08 -0700 X-UW-Orig-Sender: kmatsui@smtp.washington.edu To: gcc-patches@gcc.gnu.org Cc: libstdc++@gcc.gnu.org, Ken Matsui <kmatsui@gcc.gnu.org> Subject: [PATCH v12 28/40] libstdc++: Optimize remove_pointer trait performance Date: Thu, 14 Sep 2023 19:21:34 -0700 Message-ID: <20230915022305.74083-29-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230915022305.74083-1-kmatsui@gcc.gnu.org> References: <20230914064949.29787-1-kmatsui@gcc.gnu.org> <20230915022305.74083-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: GtoknhfS52X5Xk8aySPr2KfskdQUJq_j X-Proofpoint-ORIG-GUID: GtoknhfS52X5Xk8aySPr2KfskdQUJq_j 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_02,2023-09-14_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 phishscore=0 adultscore=0 impostorscore=0 mlxscore=0 spamscore=0 priorityscore=1501 lowpriorityscore=0 mlxlogscore=543 bulkscore=0 suspectscore=0 clxscore=1034 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309150019 X-Spam-Status: No, score=-13.4 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 X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list <gcc-patches.gcc.gnu.org> List-Unsubscribe: <https://gcc.gnu.org/mailman/options/gcc-patches>, <mailto:gcc-patches-request@gcc.gnu.org?subject=unsubscribe> List-Archive: <https://gcc.gnu.org/pipermail/gcc-patches/> List-Post: <mailto:gcc-patches@gcc.gnu.org> List-Help: <mailto:gcc-patches-request@gcc.gnu.org?subject=help> List-Subscribe: <https://gcc.gnu.org/mailman/listinfo/gcc-patches>, <mailto:gcc-patches-request@gcc.gnu.org?subject=subscribe> From: Ken Matsui via Gcc-patches <gcc-patches@gcc.gnu.org> Reply-To: Ken Matsui <kmatsui@gcc.gnu.org> Errors-To: gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org Sender: "Gcc-patches" <gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1776997286578618893 X-GMAIL-MSGID: 1777068635465870252 |
Series |
Optimize type traits performance
|
|
Checks
Context | Check | Description |
---|---|---|
snail/gcc-patch-check | warning | Git am fail log |
Commit Message
Ken Matsui
Sept. 15, 2023, 2:21 a.m. UTC
This patch optimizes the performance of the remove_pointer trait by
dispatching to the new remove_pointer built-in trait.
libstdc++-v3/ChangeLog:
* include/std/type_traits (remove_pointer): Use __remove_pointer
built-in trait.
Signed-off-by: Ken Matsui <kmatsui@gcc.gnu.org>
---
libstdc++-v3/include/std/type_traits | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 674d398c075..9c56d15c0b7 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -2105,6 +2105,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION // Pointer modifications. + /// remove_pointer +#if _GLIBCXX_USE_BUILTIN_TRAIT(__remove_pointer) + template<typename _Tp> + struct remove_pointer + { using type = __remove_pointer(_Tp); }; +#else template<typename _Tp, typename> struct __remove_pointer_helper { using type = _Tp; }; @@ -2113,11 +2119,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct __remove_pointer_helper<_Tp, _Up*> { using type = _Up; }; - /// remove_pointer template<typename _Tp> struct remove_pointer : public __remove_pointer_helper<_Tp, __remove_cv_t<_Tp>> { }; +#endif template<typename _Tp, typename = void> struct __add_pointer_helper