From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by sourceware.org (Postfix) with ESMTP id 0F0783858402 for ; Tue, 14 Sep 2021 08:20:32 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 0F0783858402 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-103-EJVEEZS3MfOS_9Hs0xl1AQ-1; Tue, 14 Sep 2021 04:20:30 -0400 X-MC-Unique: EJVEEZS3MfOS_9Hs0xl1AQ-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 87004BAF8B; Tue, 14 Sep 2021 08:20:29 +0000 (UTC) Received: from tucnak.zalov.cz (unknown [10.39.192.10]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 0A70310016FE; Tue, 14 Sep 2021 08:20:28 +0000 (UTC) Received: from tucnak.zalov.cz (localhost [127.0.0.1]) by tucnak.zalov.cz (8.16.1/8.16.1) with ESMTPS id 18E8KOxu1719937 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Tue, 14 Sep 2021 10:20:24 +0200 Received: (from jakub@localhost) by tucnak.zalov.cz (8.16.1/8.16.1/Submit) id 18E8KIWE1719933; Tue, 14 Sep 2021 10:20:18 +0200 Date: Tue, 14 Sep 2021 10:20:18 +0200 From: Jakub Jelinek To: "sunil.k.pandey" , Jason Merrill , Uros Bizjak , Jan Hubicka Cc: gcc-patches@gcc.gnu.org Subject: Re: [r12-3495 Regression] FAIL: 29_atomics/atomic_flag/test_and_set/explicit-hle.cc (test for excess errors) on Linux/x86_64 Message-ID: <20210914082018.GR304296@tucnak> Reply-To: Jakub Jelinek References: <20210913220801.CAC5D286470F@gskx-2.sc.intel.com> MIME-Version: 1.0 In-Reply-To: <20210913220801.CAC5D286470F@gskx-2.sc.intel.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-5.5 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, KAM_NUMSUBJECT, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 14 Sep 2021 08:20:33 -0000 On Mon, Sep 13, 2021 at 03:08:01PM -0700, sunil.k.pandey via Gcc-patches wrote: > FAIL: 29_atomics/atomic_flag/test_and_set/explicit-hle.cc (test for excess errors) Apparently all C++ compilations with -m32 -march={i386,i486,i586,pentium,pentiumpro,lakemont,pentium4} FAIL with: : warning: ‘--param constructive-interference-size=64’ is greater than ‘--param l1-cache-line-size=0’ [-Winterference-size] So, either the C++ FE should not warn if param_l1_cache_line_size is 0 (treat it as a don't know value), or the backend shouldn't overwrite the default generic param value of 32 with 0 when ix86_tune_cost->prefetch_block is 0. > FAIL: g++.dg/ext/sync-4.C -std=gnu++14 (test for excess errors) > FAIL: g++.dg/ext/sync-4.C -std=gnu++17 (test for excess errors) > FAIL: g++.dg/ext/sync-4.C -std=gnu++2a (test for excess errors) > FAIL: g++.dg/ext/sync-4.C -std=gnu++98 (test for excess errors) ... Jakub