From patchwork Tue Oct 24 02:00:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ken Matsui X-Patchwork-Id: 157225 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:ce89:0:b0:403:3b70:6f57 with SMTP id p9csp1672231vqx; Mon, 23 Oct 2023 19:19:26 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFIkEbG/628zXYdFXVaLoXoxawH3ZcNuuLN1YSA6KDXHJEwaKDea3gkc9JG5lvz2xucV56Z X-Received: by 2002:a05:620a:bcb:b0:76e:f496:1930 with SMTP id s11-20020a05620a0bcb00b0076ef4961930mr12421707qki.43.1698113965939; Mon, 23 Oct 2023 19:19:25 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1698113965; cv=pass; d=google.com; s=arc-20160816; b=F7791uAeJmWbZtm9A1gLQM78MkIYIDTP4ggeIOvMih1/oqg/8ChhVTIHCK/eavKnEN wqtgV7BKA8prWK/bKT3ES9o6Pcmji6dQHFg4+vvQFMwe6Rq0Us5ic2Gw3+ZNQqkNtOy0 0wFZ0IRxv5c9xGlmmczXfCcZqUtutsmS7bPZNhkYmawpKxGNh5Pon6HOmUEsryrYjo57 7XOsw05VHLEIvx9mbV9D1WRw/nmjRGjethdrn2BvZieF9eaqpkRvN8JV2nMGV+ggoAyZ +9+z+YPLLKz5MeatlCbcOyXfIIXtGVnMoLA9qjCLJdkDA9RwAY38TJ6EPCqg0G1Gx93w 6qmw== 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=IafHh8MTmCXiybtIHHWzrDxrXpTRQUI8QxeZGVU/Rb4=; fh=kSSy/oyUXqQD15FLeKdymIgDBFPFITPA1Gj52CNOxRQ=; b=VOMilOCe7Alg1Dzv6Wqjc1Nz/EqIhQ6pwlMB7LMtT/R0d9WI8fnc5UEs0P5OI8c7hw Cwr/vAbySxEc694We2cOgorUy4y7W9I6SVEwZ2GzakfVr/lEpQUl+MaZZnWhaXpgl3fk kb98eCseavtRnFV5tzjWC/0oigKmO7IFqpHn7Sa0oZwf9kEgpk29CRqtRW85zjlgkeG4 wwt/suRiU9ZjkHp9+KIIXfRG2yeBMTRrZx1WSpwsFYFYQZ9q+oTGK4PUeAPfATMBrFRy xmkeAf+6W7bGfuI6Od99qwJ2hNjc7ZV5aCjRIrfFXaGwsGbqXb54/QR5/6nJChg1TeHQ MCtg== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@gcc.gnu.org header.s=default header.b=SDnFkx9S; 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 c5-20020a0cfb05000000b0065d067f07d6si6390003qvp.318.2023.10.23.19.19.25 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Oct 2023 19:19:25 -0700 (PDT) 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=SDnFkx9S; 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 A8ED73861920 for ; Tue, 24 Oct 2023 02:19:25 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A8ED73861920 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1698113965; bh=IafHh8MTmCXiybtIHHWzrDxrXpTRQUI8QxeZGVU/Rb4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=SDnFkx9SMz2akPz2MaBB+XhHCSCQnoUPUG3bO+F90PD6k6dPkhpKrqnOYcB392xHK XTtg8qb/J6y8SL6TMekFT33Qw2NZm3FfULPbZ8THK6fz4SyY9YQRCDqWElEWRYI1bM KlYZdVS+wTuThLHA+Ai/VxYA04SyTAwDNMdnrGWA= 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 2C4A13858031; Tue, 24 Oct 2023 02:05:10 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 2C4A13858031 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 2C4A13858031 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=1698113112; cv=none; b=pCyJEpFN2oJNwCYzcHHfGwDdSw3ezFYKkO6tDe6l9g4VtNkUcd/SYtLsSsPgPy6EmqrBFCNCnIj3Hort67bgKfHUf2nPSR5uVH6wX6ZmMbeTU8eovLQhZy/ZnCcqhdTWeSWOKNbQZaX/mNYySj/j+tk9eltgh4eibFvFnLHuOcU= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1698113112; c=relaxed/simple; bh=KmEPQMU3hoW1ySgC6cVDpc5osWUMiw3FiqfhXOBG3nE=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=C2HnsrRVMdRYkq5apLWMdGBdcIGnb814/6qN4tV1rWphgYzUPSeqxG3V7C3UnRdeeMbLmEC4KpUK6AAHKpPDOvB4de9a90nkSxCESXZ/d9XLS4mvSfNYDBT9z6z9zwwfuPLHnWHEhmUBYD8OP0/of0N3Ef91wwjyTg9+j8QwThU= ARC-Authentication-Results: i=1; server2.sourceware.org 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 39O24skT002687; Tue, 24 Oct 2023 02:05:09 GMT Received: from mxout26.s.uw.edu (mxout26.s.uw.edu [140.142.234.176]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3tx0u59s8g-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 24 Oct 2023 02:05:09 +0000 Received: from smtp.washington.edu (smtp.washington.edu [140.142.234.157]) by mxout26.s.uw.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 39O24aTL006166 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 23 Oct 2023 19:04:36 -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 39O24Tm5031305 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 23 Oct 2023 19:04:36 -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 v25 07/33] libstdc++: Optimize std::is_volatile compilation performance Date: Mon, 23 Oct 2023 19:00:50 -0700 Message-ID: <20231024020424.699427-8-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231024020424.699427-1-kmatsui@gcc.gnu.org> References: <20231020162115.2307797-1-kmatsui@gcc.gnu.org> <20231024020424.699427-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: WIm-p-dBagq84JdnFPu2XQ0M2I50tHQX X-Proofpoint-GUID: WIm-p-dBagq84JdnFPu2XQ0M2I50tHQX 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=2023-10-24_01,2023-10-19_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 mlxscore=0 phishscore=0 bulkscore=0 mlxlogscore=813 clxscore=1034 priorityscore=1501 adultscore=0 spamscore=0 impostorscore=0 suspectscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2310170001 definitions=main-2310240017 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 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: 1780601550040345100 X-GMAIL-MSGID: 1780601550040345100 This patch optimizes the compilation performance of std::is_volatile by dispatching to the new __is_volatile built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_volatile): Use __is_volatile built-in trait. (is_volatile_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 686e38e47c3..c01f65df22b 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -800,6 +800,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION #endif /// is_volatile +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_volatile) + template + struct is_volatile + : public __bool_constant<__is_volatile(_Tp)> + { }; +#else template struct is_volatile : public false_type { }; @@ -807,6 +813,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template struct is_volatile<_Tp volatile> : public true_type { }; +#endif /// is_trivial template @@ -3236,10 +3243,15 @@ template inline constexpr bool is_const_v = true; #endif +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_volatile) +template + inline constexpr bool is_volatile_v = __is_volatile(_Tp); +#else template inline constexpr bool is_volatile_v = false; template inline constexpr bool is_volatile_v = true; +#endif template inline constexpr bool is_trivial_v = __is_trivial(_Tp);