From patchwork Sat Dec 23 21:20:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ken Matsui X-Patchwork-Id: 183008 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7300:2483:b0:fb:cd0c:d3e with SMTP id q3csp1875233dyi; Sat, 23 Dec 2023 13:37:33 -0800 (PST) X-Google-Smtp-Source: AGHT+IEBrlXHAQ+b+uoh/1EqVYtenH8lvuIUOAP7qkfMyfuX9cBuwJlKtbPnZYdQNwnAD0c/YrXD X-Received: by 2002:a05:6214:2463:b0:67f:8e5a:a54b with SMTP id im3-20020a056214246300b0067f8e5aa54bmr5159330qvb.111.1703367453193; Sat, 23 Dec 2023 13:37:33 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1703367453; cv=pass; d=google.com; s=arc-20160816; b=M8egIrYtO7w3Bsm8bUSnA4T9E3dq9C2lp0Oo1NhKfCpoqBIbJde8U0DMQZMKsaq3Xb COYkiRbnpCtIg3p2G7L+aHB431I+yo79F58pHC4t4qPkexzoyyp7PF0OAuz+F04IWBmv f5DHaWoiauknp0MDCZGSl7XSRJW/9IdOMeYklsATKfjEOpLmnwF8ssKWBCQxwW1yVKEY 0tv8WEljWJkdDqsM/49yoRcv7q40p8L941a5FnAVYG1iuUuJi7lZZw3oXc5AQ4AbObLd gI/ZcZ+sXHfU2Q8aSfytFENLWjpiwWEymLDdp+w3sS0PcicJGbnpxSMNUFE3f8fisqkH gf+A== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=errors-to: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 :from:arc-filter:dmarc-filter:delivered-to:dkim-signature :dkim-filter; bh=Y3HZeBa837LhWeHrGSBtMZSugr4Gzi7m4Fc3t34bWKA=; fh=kSSy/oyUXqQD15FLeKdymIgDBFPFITPA1Gj52CNOxRQ=; b=ozv24yu4Cqa3FTB3nZRw4dHhXIgQPItqEn8hz9GZmmKQmwArGgCeyyHzS0zb5qWRna pcx2ylqEjJG3jfmqpd0ufspoZpmNZRq/TVdSg0aN66NX2pCXHlnGOULwW71OtvG/6PfL rwOBXh6SSlDD0xx48XD4aK+O3iOZZG8YmFc4QBLvND68nrYxC2UPSk7DN//F1pbGcSBk u4VGrwmemhAlzFAcbPsVWLc6cx8t5F3QLt7giJmhnUcfBn+O1IAfnkOeXIK3DWU07cTT vtgl7toBZb531LoDGHcxJMP/566bSQdBangnSXFr7Mh50AWdPT1Iq40Z0lRDVsKAUj68 aCAQ== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@gcc.gnu.org header.s=default header.b=GDFsfT8O; arc=pass (i=1); spf=pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 8.43.85.97 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. [8.43.85.97]) by mx.google.com with ESMTPS id b7-20020a0cb3c7000000b0067f0540d19asi7090686qvf.444.2023.12.23.13.37.33 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 23 Dec 2023 13:37:33 -0800 (PST) Received-SPF: pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 8.43.85.97 as permitted sender) client-ip=8.43.85.97; Authentication-Results: mx.google.com; dkim=pass header.i=@gcc.gnu.org header.s=default header.b=GDFsfT8O; arc=pass (i=1); spf=pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 8.43.85.97 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 DA290385842A for ; Sat, 23 Dec 2023 21:37:32 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org DA290385842A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1703367452; bh=Y3HZeBa837LhWeHrGSBtMZSugr4Gzi7m4Fc3t34bWKA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=GDFsfT8O82j5GwdKuoXiCMNhYJiUIVsYIYC/BKPpfXzzowcTCqLEoBQgMAotFILQi v+mApM1db+W/7XzEHSt0GEiC3juAxNVwqjbSoS0JHnzz6PqiUiO/DazlSojA84/YLg hJraZhqOJf3Z9UonONOVpuNmBL8uXwEtv5LnKOQk= 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 0EC9B385841C; Sat, 23 Dec 2023 21:36:51 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 0EC9B385841C 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 ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 0EC9B385841C 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=1703367412; cv=none; b=EHC0DgIbPjb/+Q0e1QUbxeJUsTWrg4EvwdZYFKjTSePw64tprlZM3PjsRPx6HW5olod5IwzMyWLjb4PHSDvstho+UWH8p26X/v1v0jGahraXzwgrUVYPfQOr09WvOs1iw4v/k8OTqpMlXLukRzvXl98bifjXblXrIVKU5I+IS98= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1703367412; c=relaxed/simple; bh=QMpB927ImlgAI16xH/LGwOfHsrgh0FnZCIo1lTsBcNs=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=D7byyaz0tcWdKM269pTdDq9RHnXJb2sdWDcGcEAKCaxtiaKT/iwsx0r1P12NrRH/pAeVOHZ6EXmRJoI3X5O/JJxvpqMoqLLzsKDEjtNsL5b4qUmw2JtPlfxnQDSwQX2kiL+fPHLx9q+pBnuRnIyKe9fySSTyGImSnSCGLG9D4z4= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from pps.filterd (m0247481.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3BNKqgmW020463; Sat, 23 Dec 2023 21:36:50 GMT Received: from mxout26.s.uw.edu (mxout26.s.uw.edu [140.142.234.176]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3v5mqv3spg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 23 Dec 2023 21:36:50 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.54]) by mxout26.s.uw.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 3BNLaWxi032614 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 23 Dec 2023 13:36:33 -0800 X-Auth-Received: from kmatsui-ThinkPad-X1-Carbon-Gen-9.dhcp4.washington.edu ([10.154.74.194]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW19.10) with ESMTPSA id 3BNLZnnR027526 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 23 Dec 2023 13:36:32 -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 1/8] c++: Implement __is_const built-in trait Date: Sat, 23 Dec 2023 13:20:26 -0800 Message-ID: <20231223213542.448971-2-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231223213542.448971-1-kmatsui@gcc.gnu.org> References: <20231223213542.448971-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: 39g8tJz5JqgrToOI--Abbljg4pDOSllk X-Proofpoint-GUID: 39g8tJz5JqgrToOI--Abbljg4pDOSllk 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=2023-12-23_10,2023-12-22_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 spamscore=0 clxscore=1034 malwarescore=0 mlxscore=0 phishscore=0 adultscore=0 mlxlogscore=793 impostorscore=0 bulkscore=0 suspectscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2312230171 X-Spam-Status: No, score=-12.8 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+ouuuleilei=gmail.com@gcc.gnu.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1786110230065117076 X-GMAIL-MSGID: 1786110230065117076 This patch implements built-in trait for std::is_const. gcc/cp/ChangeLog: * cp-trait.def: Define __is_const. * constraint.cc (diagnose_trait_expr): Handle CPTK_IS_CONST. * semantics.cc (trait_expr_value): Likewise. (finish_trait_expr): Likewise. gcc/testsuite/ChangeLog: * g++.dg/ext/has-builtin-1.C: Test existence of __is_const. * g++.dg/ext/is_const.C: New test. Signed-off-by: Ken Matsui --- gcc/cp/constraint.cc | 3 +++ gcc/cp/cp-trait.def | 1 + gcc/cp/semantics.cc | 4 ++++ gcc/testsuite/g++.dg/ext/has-builtin-1.C | 3 +++ gcc/testsuite/g++.dg/ext/is_const.C | 19 +++++++++++++++++++ 5 files changed, 30 insertions(+) create mode 100644 gcc/testsuite/g++.dg/ext/is_const.C diff --git a/gcc/cp/constraint.cc b/gcc/cp/constraint.cc index eeacead52a5..f1b07aa2853 100644 --- a/gcc/cp/constraint.cc +++ b/gcc/cp/constraint.cc @@ -3734,6 +3734,9 @@ diagnose_trait_expr (tree expr, tree args) case CPTK_IS_CLASS: inform (loc, " %qT is not a class", t1); break; + case CPTK_IS_CONST: + inform (loc, " %qT is not a const type", t1); + break; case CPTK_IS_CONSTRUCTIBLE: if (!t2) inform (loc, " %qT is not default constructible", t1); diff --git a/gcc/cp/cp-trait.def b/gcc/cp/cp-trait.def index 394f006f20f..36faed9c0b3 100644 --- a/gcc/cp/cp-trait.def +++ b/gcc/cp/cp-trait.def @@ -64,6 +64,7 @@ DEFTRAIT_EXPR (IS_ASSIGNABLE, "__is_assignable", 2) DEFTRAIT_EXPR (IS_BASE_OF, "__is_base_of", 2) DEFTRAIT_EXPR (IS_BOUNDED_ARRAY, "__is_bounded_array", 1) DEFTRAIT_EXPR (IS_CLASS, "__is_class", 1) +DEFTRAIT_EXPR (IS_CONST, "__is_const", 1) DEFTRAIT_EXPR (IS_CONSTRUCTIBLE, "__is_constructible", -1) DEFTRAIT_EXPR (IS_CONVERTIBLE, "__is_convertible", 2) DEFTRAIT_EXPR (IS_EMPTY, "__is_empty", 1) diff --git a/gcc/cp/semantics.cc b/gcc/cp/semantics.cc index e6dba29ee81..364d87ee34d 100644 --- a/gcc/cp/semantics.cc +++ b/gcc/cp/semantics.cc @@ -12415,6 +12415,9 @@ trait_expr_value (cp_trait_kind kind, tree type1, tree type2) case CPTK_IS_CLASS: return NON_UNION_CLASS_TYPE_P (type1); + case CPTK_IS_CONST: + return CP_TYPE_CONST_P (type1); + case CPTK_IS_CONSTRUCTIBLE: return is_xible (INIT_EXPR, type1, type2); @@ -12657,6 +12660,7 @@ finish_trait_expr (location_t loc, cp_trait_kind kind, tree type1, tree type2) case CPTK_IS_ARRAY: case CPTK_IS_BOUNDED_ARRAY: case CPTK_IS_CLASS: + case CPTK_IS_CONST: case CPTK_IS_ENUM: case CPTK_IS_FUNCTION: case CPTK_IS_MEMBER_FUNCTION_POINTER: diff --git a/gcc/testsuite/g++.dg/ext/has-builtin-1.C b/gcc/testsuite/g++.dg/ext/has-builtin-1.C index 02b4b4d745d..e3640faeb96 100644 --- a/gcc/testsuite/g++.dg/ext/has-builtin-1.C +++ b/gcc/testsuite/g++.dg/ext/has-builtin-1.C @@ -71,6 +71,9 @@ #if !__has_builtin (__is_class) # error "__has_builtin (__is_class) failed" #endif +#if !__has_builtin (__is_const) +# error "__has_builtin (__is_const) failed" +#endif #if !__has_builtin (__is_constructible) # error "__has_builtin (__is_constructible) failed" #endif diff --git a/gcc/testsuite/g++.dg/ext/is_const.C b/gcc/testsuite/g++.dg/ext/is_const.C new file mode 100644 index 00000000000..8f2d7c2fce9 --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/is_const.C @@ -0,0 +1,19 @@ +// { dg-do compile { target c++11 } } + +#include + +using namespace __gnu_test; + +#define SA(X) static_assert((X),#X) + +// Positive tests. +SA(__is_const(const int)); +SA(__is_const(const volatile int)); +SA(__is_const(cClassType)); +SA(__is_const(cvClassType)); + +// Negative tests. +SA(!__is_const(int)); +SA(!__is_const(volatile int)); +SA(!__is_const(ClassType)); +SA(!__is_const(vClassType)); From patchwork Sat Dec 23 21:20:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ken Matsui X-Patchwork-Id: 183009 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7300:2483:b0:fb:cd0c:d3e with SMTP id q3csp1875531dyi; Sat, 23 Dec 2023 13:38:37 -0800 (PST) X-Google-Smtp-Source: AGHT+IHw/7rSQxoEWbLDzoU2s05+wyG1n/nPrP6avq9IV2J6naZdEJENkR1wWQXqP38oryIhng/z X-Received: by 2002:a05:6214:20c7:b0:67a:52c7:b181 with SMTP id 7-20020a05621420c700b0067a52c7b181mr6876094qve.32.1703367517370; Sat, 23 Dec 2023 13:38:37 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1703367517; cv=pass; d=google.com; s=arc-20160816; b=kjNpEpIM+zJ+WA3Bs5gArqMQ9HHdwHe/ah4Sv5Esd/A/L8T1Wo/vc4wrurgqXsW0iX +P29IOxo5/ZOdYBLa7rkuDy1EQj0HgAWJrK6xTkiW+FMCtNruulTj3ETzyS03uXejC1Y JialmriyqRwFDEKHPDeZZ22f5L1ChUVjRBV3M1ZHG1tYPDbu4I6rcF+u8acbrD3q3Pq5 nPHlQrpGr/9Suh0lkhjwykMQpghkbCH8uOXAJYxlBVY6Iz8o0mlDPAnWSpgNz4oOZKfp CA/nCgQ81v/y2rKao33142RIoYqIYhVKJ75b49niz/zOcXsvQn/g0+9qrhFPVhUyZAZw uyKA== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=errors-to: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 :from:arc-filter:dmarc-filter:delivered-to:dkim-signature :dkim-filter; bh=vThgwY2ku4ueloZCcQTK/u0jgM9lNPDhlWQFxm/BYSE=; fh=kSSy/oyUXqQD15FLeKdymIgDBFPFITPA1Gj52CNOxRQ=; b=zsAEvo+xjOmNPl/euEbrTSXAHcAn2sqJSxXi6J5kq+e+stWUpMeFujt68K+n8kLWbP DDhFxZtq/eaGbjnzVqmYUV97k9wuDm28RBZDZ7SnqQsiE0g0rs1PineXXmMxEtQ3wcS4 4JZKM+jiRFBFPjRZmUMxaKJwq8mIkNIg+Yh/y4lpwYh3jjFh/RO+3EwH+uIUjh0boB6R BF3N929AH1lppvozKjFyfnsNsqQw+2a9zjSVGv/DmTXBKFP8pq5l5ypO/bIJDh3hJO0j Lp3PyYo3gC03lzLNzM8F7qcm6TvgSPxwQIruAF0qvs/OJmMNiAPHdw2ob8z/MNQr0q2F HS/Q== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@gcc.gnu.org header.s=default header.b=PLW0G7HC; arc=pass (i=1); 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 l17-20020a05622a051100b004239fd7fc33si7442261qtx.751.2023.12.23.13.38.37 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 23 Dec 2023 13:38:37 -0800 (PST) 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=PLW0G7HC; arc=pass (i=1); 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 10FDD3858422 for ; Sat, 23 Dec 2023 21:38:37 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 10FDD3858422 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1703367517; bh=vThgwY2ku4ueloZCcQTK/u0jgM9lNPDhlWQFxm/BYSE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=PLW0G7HCM2I2YKam3ji7asUqMql5WPrKVutvO+b7KUG5ZzEwDsfm7f7eHszcA0hJ2 Y5YL7KJXQB7rd2l1JkpV+jUOLmkE4+HwiofxoYjj8mMHRpdRIGKGeks4rbKZ/ddru8 ny0POzL5ZZ//0Nxaj0pXJYlVlXhwbLWLzMt1aOTs= 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 27A373858D33; Sat, 23 Dec 2023 21:37:55 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 27A373858D33 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 ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 27A373858D33 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=205.220.165.146 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1703367476; cv=none; b=VANS6kBeS3lYvnQcvG9ezw7vn/IDx54E4nxSXrYnvTws/dLa1uPiX6LJHbCBKMbZypXFj2j3mKKC8ehzFaCn+A/MZrm0abEOkt1cOfzSlEugGjm8ekYLzjzvc8N2g1xLltMfkYqO5tSZcerqmcLFTBh2w1s0DiRTAcC1l0Alxpw= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1703367476; c=relaxed/simple; bh=ini9IOHj5y3BJCxYZN2sAhU9sw4ACWMfW9RNyr0rIGY=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=L2kSWHge97gvxqxZwBcfpMeEeGlh8QDY/mzfhyRMuhbcCJmyIedoj51hNjhZIlx6CbYURVfLjrU7O+6OiQ3dkG7Po/WQfhYy1ew0wBwCVt6zb8ZDTiJrtwQ4sI6GCidzzR6j3yBlxEclmEl2WPeV18GoJQYfN4/oEnibd337hA8= ARC-Authentication-Results: i=1; server2.sourceware.org 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 3BNLZ1EB022363; Sat, 23 Dec 2023 21:37:53 GMT Received: from mxout26.s.uw.edu (mxout26.s.uw.edu [140.142.234.176]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3v5qk4k9eu-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 23 Dec 2023 21:37:53 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.54]) by mxout26.s.uw.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 3BNLbMq5032763 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 23 Dec 2023 13:37:22 -0800 X-Auth-Received: from kmatsui-ThinkPad-X1-Carbon-Gen-9.dhcp4.washington.edu ([10.154.74.194]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW19.10) with ESMTPSA id 3BNLZnnS027526 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 23 Dec 2023 13:37:22 -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 2/8] libstdc++: Optimize std::is_const compilation performance Date: Sat, 23 Dec 2023 13:20:27 -0800 Message-ID: <20231223213542.448971-3-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231223213542.448971-1-kmatsui@gcc.gnu.org> References: <20231223213542.448971-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 X-Proofpoint-GUID: UNf0mleJaoRUOWizGE4eDPTr3RDgawc9 X-Proofpoint-ORIG-GUID: UNf0mleJaoRUOWizGE4eDPTr3RDgawc9 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=2023-12-23_10,2023-12-22_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 malwarescore=0 adultscore=0 lowpriorityscore=0 spamscore=0 mlxscore=0 priorityscore=1501 mlxlogscore=765 bulkscore=0 phishscore=0 impostorscore=0 clxscore=1034 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2312230171 X-Spam-Status: No, score=-12.8 required=5.0 tests=BAYES_00, GIT_PATCH_0, JMQ_SPF_NEUTRAL, KAM_DMARC_STATUS, RCVD_IN_DNSWL_NONE, 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+ouuuleilei=gmail.com@gcc.gnu.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1786110297926812938 X-GMAIL-MSGID: 1786110297926812938 This patch optimizes the compilation performance of std::is_const by dispatching to the new __is_const built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_const): Use __is_const built-in trait. (is_const_v): Likewise. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index f00c07f94f9..f40831de838 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -835,6 +835,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION // Type properties. /// is_const +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_const) + template + struct is_const + : public __bool_constant<__is_const(_Tp)> + { }; +#else template struct is_const : public false_type { }; @@ -842,6 +848,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template struct is_const<_Tp const> : public true_type { }; +#endif /// is_volatile template @@ -3315,10 +3322,15 @@ template inline constexpr bool is_member_pointer_v = is_member_pointer<_Tp>::value; #endif +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_const) +template + inline constexpr bool is_const_v = __is_const(_Tp); +#else template inline constexpr bool is_const_v = false; template inline constexpr bool is_const_v = true; +#endif #if _GLIBCXX_USE_BUILTIN_TRAIT(__is_function) template