From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by sourceware.org (Postfix) with ESMTPS id 2E65E386075F for ; Thu, 20 Oct 2022 12:33:30 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 2E65E386075F Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=suse.de Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=suse.de Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 16A171FBAE; Thu, 20 Oct 2022 12:33:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1666269209; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=C8fV/BtGyhkjlo/q8z/rxAdW0WYQIofpwCnN5/kFqJc=; b=QT2eOJV3x84U1uJoSUrJ2aU05RI4gNewtvM/Fxr/rgltiGX+0eGbV2EmcvT4nmvhKtmlEi dyEyk+evXSz5JMxc+htR3CpEDAh1vC/CkVmIRf6tNS4+Dtv3rCkBuiLe2LMy9HtMuAxXLn EN9//vwA06HwWjjc9V49ezSoKMknWAM= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1666269209; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=C8fV/BtGyhkjlo/q8z/rxAdW0WYQIofpwCnN5/kFqJc=; b=8kk3lpwvI7NTg2EJw8ANQWasEk+6m4rfLYgEsZOG8Rbe6optxrCt79DFeRWtPPZaQe2Q52 oXdycnz4W+tgM8Cg== Received: from wotan.suse.de (wotan.suse.de [10.160.0.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by relay2.suse.de (Postfix) with ESMTPS id C18242C142; Thu, 20 Oct 2022 12:33:28 +0000 (UTC) Received: by wotan.suse.de (Postfix, from userid 10510) id 905016457; Thu, 20 Oct 2022 12:33:28 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by wotan.suse.de (Postfix) with ESMTP id 8F1C86229; Thu, 20 Oct 2022 12:33:28 +0000 (UTC) Date: Thu, 20 Oct 2022 12:33:28 +0000 (UTC) From: Michael Matz To: Thomas Schwinge cc: "H.J. Lu" , Hongtao Liu , gcc-patches@gcc.gnu.org, =?ISO-8859-15?Q?Martin_Li=A8ka?= , Jakub Jelinek , Tobias Burnus , Richard Biener Subject: Re: Remove support for Intel MIC offloading (was: [PATCH] Remove dead code.) In-Reply-To: <87a65qhhk0.fsf@euler.schwinge.homeip.net> Message-ID: References: <499b9ae2-1365-a954-ed5e-35aede5d0def@suse.cz> <20211108085918.GH2710@tucnak> <3376e0dd-9f8e-ebac-eaef-4f02865807c3@suse.cz> <87a65qhhk0.fsf@euler.schwinge.homeip.net> User-Agent: Alpine 2.20 (LSU 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Spam-Status: No, score=-2.9 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS,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 List-Id: Hey, On Thu, 20 Oct 2022, Thomas Schwinge wrote: > This had been done in > wwwdocs commit 5c7ecfb5627e412a3d142d8dc212f4cd39b3b73f > "Document deprecation of OpenMP MIC offloading in GCC 12". > > I'm sad about this, because -- in theory -- such a plugin is very useful > for offloading simulation/debugging (separate host/device memory spaces, > allow sanitizers to run on offloaded code Yeah, I think that's a _very_ useful feature, but indeed ... > (like LLVM a while ago > implemented), and so on), but all that doesn't help -- in practice -- if > nobody is maintaining that code. ... it should then be somewhat maintained properly. Maybe the MIC-specifics could be removed from the code, and it could be transformed into a "null"-offload target, as example and testing vehicle (and implying that such new liboffloadmic^H^H^Hnull would have its upstream in the GCC repo). Alas, if noone is going to do that work removing is the right choice. Ciao, Michael.