From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 87B58C433ED for ; Wed, 5 May 2021 11:06:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4636B60233 for ; Wed, 5 May 2021 11:06:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232566AbhEELHB (ORCPT ); Wed, 5 May 2021 07:07:01 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:48505 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232256AbhEELG6 (ORCPT ); Wed, 5 May 2021 07:06:58 -0400 Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-89-jmuEs67kPHax_weughYq5A-1; Wed, 05 May 2021 12:05:59 +0100 X-MC-Unique: jmuEs67kPHax_weughYq5A-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) by AcuMS.aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 5 May 2021 12:05:58 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.015; Wed, 5 May 2021 12:05:58 +0100 From: David Laight To: 'Miguel Ojeda' , Adrian Bunk CC: Linus Torvalds , Tom Stellard , Nick Desaulniers , "Masahiro Yamada" , Nathan Chancellor , "Linux Kernel Mailing List" , clang-built-linux , Fangrui Song , Serge Guelton , Sylvestre Ledru Subject: RE: Very slow clang kernel config .. Thread-Topic: Very slow clang kernel config .. Thread-Index: AQHXQS0DH46G91tEpEmd7WaoBDaEqarUt3wQ Date: Wed, 5 May 2021 11:05:58 +0000 Message-ID: <5256ed6b6f7d423daeb36fcbfc837fbc@AcuMS.aculab.com> References: <1c5e05fa-a246-9456-ff4e-287960acb18c@redhat.com> <20210502093123.GC12293@localhost> In-Reply-To: Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogTWlndWVsIE9qZWRhDQo+IFNlbnQ6IDA0IE1heSAyMDIxIDIyOjMzDQouLi4NCj4gPiBX aGF0IGhhcHBlbnMgaWYgeW91IHVzZSBhIHByb2dyYW0gcHJvdmlkZWQgYnkgeW91ciBkaXN0cmli dXRpb24gdGhhdCBpcw0KPiA+IHdyaXR0ZW4gaW4gUnVzdCBhbmQgaGFuZGxlcyB1bnRydXN0ZWQg aW5wdXQgaW4gYSB3YXkgdGhhdCBpdCBtaWdodCBiZQ0KPiA+IHZ1bG5lcmFibGUgdG8gZXhwbG9p dHMgYmFzZWQgb24gb25lIG9mIHRoZXNlIENWRXM/DQo+ID4NCj4gPiBUaGUgcHJvZ3JhbSBoYXMg YSBrbm93biB2dWxuZXJhYmlsaXR5IHRoYXQgd2lsbCBsaWtlbHkgc3RheSB1bmZpeGVkLg0KPiAN Cj4gV2h5PyBJIGZhaWwgdG8gc2VlIHdoYXQgaXMgdGhlIGlzc3VlIHJlYnVpbGRpbmcgKG9yIHJl bGlua2luZykgYWxsDQo+IHBhY2thZ2VzIGV4Y2VwdCBkaXN0cmlidXRpb25zIGxhY2tpbmcgZW5v dWdoIGNvbXB1dGUgcmVzb3VyY2VzLg0KDQpUaGUgcHJvYmxlbSBpc24ndCB0aGUgcGFja2FnZXMg dGhhdCBjb21lIHdpdGggdGhlIGRpc3RyaWJ1dGlvbi4NCg0KVGhlIHByb2JsZW0gaXMgM3JkIHBh cnR5IHByb2dyYW1zIHN1cHBsaWVkIGFzIGJpbmFyaWVzLg0KVGhleSBoYXZlIDIgYmlnIHJlcXVp cmVtZW50czoNCjEpIFRoZSBzYW1lIGJpbmFyeSB3aWxsIHJ1biBvbiBhbGwgZGlzdHJpYnV0aW9u cyAobmV3ZXIgdGhhbiBzb21lIGN1dG9mZikuDQoyKSBBbnkgc2VyaW91cyBidWcgZml4ZXMgaW4g c3lzdGVtIGxpYnJhcmllcyBnZXQgcGlja2VkIHVwIHdoZW4gdGhlDQogICBkaXN0cmlidXRpb24g dXBkYXRlcyB0aGUgbGlicmFyeS4NCg0KVGhlcmUgaXMgYWxzbyB0aGUgcG9zc2liaWxpdHkgdGhh dCB0aGUgaW1wbGVtZW50YXRpb24gb2Ygc29tZQ0KZnVuY3Rpb24gZGlmZmVycyBiZXR3ZWVuIGRp c3RyaWJ1dGlvbnMuDQpTbyB5b3UgYWJzb2x1dGVseSBuZWVkIHRvIHVzZSB0aGUgdmVyc2lvbiBm cm9tIHRoZSBpbnN0YWxsZWQgc3lzdGVtDQpub3Qgd2hhdGV2ZXIgd2FzIGluIHNvbWUgc3RhdGlj IGxpYnJhcnkgb24gdGhlIGFjdHVhbCBidWlsZCBtYWNoaW5lLg0KDQpCb3RoIG9mIHRoZXNlIG5l ZWQgc3RhYmxlIEFCSSBhbmQgc2hhcmVkIGxpYnJhcmllcy4NCg0KUmVtZW1iZXIsIGFzIGZhciBh cyB1c2Vyc3BhY2UgaXMgY29uY2VybmVkLCBmb28uaCBpcyB0aGUgZGVmaW5pdGlvbg0KZm9yICdm b28nIGFuZCBmb28uc28gaXMgdGhlIGN1cnJlbnQgaW1wbGVtZW50YXRpb24uDQooeWVzLCBJIGtu b3cgYSBsaXR0bGUgYml0IG9mIGluZm8gaXMgdGFrZW4gZnJvbSBmb28uc28gb24gdGhlIGJ1aWxk DQpzeXN0ZW0gLSBidXQgdGhhdCBvdWdodCB0byBiZSBhYnNvbHV0ZWx5IG1pbmltYWwuKQ0KDQoJ RGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1v dW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEz OTczODYgKFdhbGVzKQ0K