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 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 52110C433B4 for ; Sun, 2 May 2021 11:35:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1D4A361245 for ; Sun, 2 May 2021 11:35:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230453AbhEBLgP (ORCPT ); Sun, 2 May 2021 07:36:15 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.85.151]:34379 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229988AbhEBLgO (ORCPT ); Sun, 2 May 2021 07:36:14 -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-220-8YP8zTAbMZCNW5G_cyVtLA-1; Sun, 02 May 2021 12:35:20 +0100 X-MC-Unique: 8YP8zTAbMZCNW5G_cyVtLA-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; Sun, 2 May 2021 12:35:19 +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; Sun, 2 May 2021 12:35:19 +0100 From: David Laight To: 'Adrian Bunk' , Linus Torvalds CC: 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: AQHXPzXqH46G91tEpEmd7WaoBDaEqarQCO0Q Date: Sun, 2 May 2021 11:35:19 +0000 Message-ID: <0eba31ea508f4ec491f56e3b8c85fb6c@AcuMS.aculab.com> References: <1c5e05fa-a246-9456-ff4e-287960acb18c@redhat.com> <20210502093123.GC12293@localhost> In-Reply-To: <20210502093123.GC12293@localhost> 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 RnJvbTogQWRyaWFuIEJ1bmsNCj4gU2VudDogMDIgTWF5IDIwMjEgMTA6MzENCj4gDQo+IE9uIFNh dCwgTWF5IDAxLCAyMDIxIGF0IDA5OjMyOjI1QU0gLTA3MDAsIExpbnVzIFRvcnZhbGRzIHdyb3Rl Og0KPiA+Li4uDQo+ID4gWWVzLCBpdCBjYW4gc2F2ZSBvbiBkaXNrIHVzZSwgYnV0IHVubGVzcyBp dCdzIHNvbWUgdmVyeSBjb3JlIGxpYnJhcnkNCj4gPiB1c2VkIGJ5IGEgbG90IG9mIHRoaW5ncyAo aWUgcGFydGljdWxhcmx5IHRoaW5ncyBsaWtlIEdVSSBsaWJyYXJpZXMNCj4gPiBsaWtlIGdub21l IG9yIFF0IG9yIHNpbWlsYXIpLCB0aGUgZGlzayBzYXZpbmdzIGFyZSBvZnRlbiBub3QgYWxsIHRo YXQNCj4gPiBiaWcgLSBhbmQgZGlzayBpcyBjaGVhcC4gQW5kIHRoZSBtZW1vcnkgc2F2aW5ncyBh cmUgb2Z0ZW4gYWN0dWFsbHkNCj4gPiBuZWdhdGl2ZSAoYWdhaW4sIHVubGVzcyBpdCdzIHNvbWUg YmlnIGxpYnJhcnkgdGhhdCBpcyB0eXBpY2FsbHkgdXNlZA0KPiA+IGJ5IGxvdHMgb2YgZGlmZmVy ZW50IHByb2dyYW1zIGF0IHRoZSBzYW1lIHRpbWUpLg0KPiA+Li4uDQo+ID4gSSB0aGluayBwZW9w bGUgaGF2ZSB0aGlzIGluY29ycmVjdCBwaWN0dXJlIHRoYXQgInNoYXJlZCBsaWJyYXJpZXMgYXJl DQo+ID4gaW5oZXJlbnRseSBnb29kIi4gVGhleSByZWFsbHkgcmVhbGx5IGFyZW4ndC4gVGhleSBj YXVzZSBhIGxvdCBvZg0KPiA+IHByb2JsZW1zLCBhbmQgdGhlIGFkdmFudGFnZSByZWFsbHkgc2hv dWxkIGFsd2F5cyBiZSB3ZWlnaGVkIGFnYWluc3QNCj4gPiB0aG9zZSAoYmlnKSBkaXNhZHZhbnRh Z2VzLg0KPiA+Li4uDQo+IA0KPiBEaXNrIGFuZCBtZW1vcnkgdXNhZ2UgaXMgbm90IHRoZSBiaWdn ZXN0IGFkdmFudGFnZS4NCj4gDQo+IFRoZSBiaWdnZXN0IGFkdmFudGFnZSBvZiBzaGFyZWQgbGli cmFyaWVzIGlzIHRoYXQgdGhleSBlbmFibGUNCj4gZGlzdHJpYnV0aW9ucyB0byBwcm92aWRlIHNl Y3VyaXR5IGZpeGVzLg0KPiANCj4gRGlzdHJpYnV0aW9ucyB0cnkgaGFyZCB0byBoYXZlIG9ubHkg b25lIHBsYWNlIHRvIHBhdGNoIGFuZCBvbmUgcGFja2FnZQ0KPiB0byByZWJ1aWxkIHdoZW4gYSBD VkUgaGFzIHRvIGJlIGZpeGVkLg0KPiANCj4gSXQgaXMgbm90IGZlYXNpYmxlIHRvIHJlYnVpbGQg YWxsIHVzZXJzIG9mIGEgbGlicmFyeSBpbiBhDQo+IGRpc3RyaWJ1dGlvbiBldmVyeSB0aW1lIGEg Q1ZFIGdldHMgcHVibGlzaGVkIGZvciBhIGxpYnJhcnkuDQoNCkFic29sdXRlbHkuDQpZb3UnZCBh bHNvIG5lZWQgdG8gcmVidWlsZCBldmVyeSBhcHBsaWNhdGlvbiB0aGF0IG1pZ2h0IGluY2x1ZGUN CnRoZSBzdGF0aWMgdmVyc2lvbiBvZiB0aGUgYnJva2VuIGZ1bmN0aW9uLg0KR29vZCBsdWNrIGZp bmRpbmcgYWxsIHRob3NlIG9uIGEgYmlnIGluc3RhbGwuDQoNCk9UT0gganVzdCBzcGxpdHRpbmcg YSBjb21waWxlciBpbnRvIG11bHRpcGxlIHNoYXJlZCBvYmplY3RzDQp0aGF0IGhhdmUgbm8gb3Ro ZXIgdXNlIGlzLCBhcyBMaW51cyBzYWlkLCBzdHVwaWQuDQoNCkJ1aWxkaW5nIHNoYXJlZCBsaWJy YXJpZXMgcmVxdWlyZXMgdGhlIHNhbWUgY29udHJvbCBhcyBidWlsZGluZw0KdGhlIGtlcm5lbC4N ClRoZSB1c2VyIGludGVyZmFjZSBtdXN0bid0IGNoYW5nZS4NCllvdSBjYW4gYWRkIG5ldyBmdW5j dGlvbnMsIGJ1dCBub3QgY2hhbmdlIGFueSBleGlzdGluZyBvbmVzLg0KVGhpcyBpcyBlYXN5IGlu IEMsIGRpZmZpY3VsdCBpbiBDKysuDQoNClNpbmNlIFBMVCBsb29rdXBzIGNhbiBvbmx5IGhhbmRs ZSBjb2RlLCB5b3UgcmVhbGx5IGRvbid0IHdhbnQNCmRhdGEgYXJlYXMgc2hhcmVkIGJldHdlZW4g dGhlIHByb2dyYW0gYW5kIGxpYnJhcnkuDQpJZiB0aGUgc2l6ZSBldmVyIGNoYW5nZXMgJ2hvcnJp ZCB0aGluZ3MgKHRtKScgaGFwcGVuLg0KDQpXZSBjb21waWxlIGFueSBzaGFyZWQgbGlicmFyaWVz IHdpdGggLWZ2aXNpYmlsaXR5PWhpZGRlbiBhbmQNCm1hcmsgYW55IGVudHJ5IHBvaW50cyB3aXRo IF9fYXR0cmlidXRlX18oKHZpc2liaWxpdHkoInByb3RlY3RlZCIpKSkuDQpUaGlzIG1lYW5zIHRo YXQgY2FsbHMgd2l0aCBhIGxpYnJhcnkgYXJlIHNpbXBsZSBQQy1yZWxhdGl2ZQ0KYW5kIG9ubHkg dGhlIGVudHJ5IHBvaW50cyBhcmUgdmlzaWJsZSBvdXRzaWRlLg0KDQoJRGF2aWQNCg0KLQ0KUmVn aXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRv biBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K