From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-4.0 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_PASS,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id 8EBE91F461 for ; Fri, 28 Jun 2019 16:49:22 +0000 (UTC) DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:date:from:to:cc:subject:message-id:references :mime-version:content-type:in-reply-to; q=dns; s=default; b=IcC1 YPWOfWD0ewVq0Oec22n8CbkPIE/GTvQh0p4Ox1yEhIwx64YxJIS4P/4cZBtY+UgY vK5WTUqLqTYwxfNBctzAxfoqiWFfN3YhraCGgt9evZ1aJGMo4ZRcqt3kt1esnoGv u04QbjZnRA34xAxe80GLNnZNnDnoenuAzIGCXc8= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:date:from:to:cc:subject:message-id:references :mime-version:content-type:in-reply-to; s=default; bh=xjZ7m5Ih2E IW1/Qa8HzTmMO+tjM=; b=IJtlSqse/BPDCZ9nM1gX0KoeFZhtFlO4cXSBVOLC0N dYHFBmbXRpqTC9pZ2kKR97nNGA+Ym2pB9IuhF61fBe0m0ni2JbS0RqpYSQUSBDME bO+Usi9ivOjTViUJWZinpP3clh27ItoMzQNOLrfuVm1CHO7Hl078F8z3FSKAiwrl Y= Received: (qmail 21793 invoked by alias); 28 Jun 2019 16:49:19 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Received: (qmail 21782 invoked by uid 89); 28 Jun 2019 16:49:19 -0000 Authentication-Results: sourceware.org; auth=none X-HELO: smtpout1.mo528.mail-out.ovh.net Date: Fri, 28 Jun 2019 13:49:07 -0300 From: "Gabriel F. T. Gomes" To: Raoni Fassina Firmino CC: , , Subject: Re: [PATCH] powerpc: Cleanup: use actual power8 assembly mnemonics Message-ID: <20190628164907.hhmkcd64sqwjj4em@tereshkova> References: <20190627184417.4118-1-raoni@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20190627184417.4118-1-raoni@linux.ibm.com> User-Agent: NeoMutt/20180716 X-Ovh-Tracer-Id: 4974788738439302684 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgeduvddrvddtgddutdejucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuqfggjfdpvefjgfevmfevgfenuceurghilhhouhhtmecuhedttdenucesvcftvggtihhpihgvnhhtshculddquddttddm On Thu, Jun 27 2019, Raoni Fassina Firmino wrote: > > Does the minimum required binutils already supports > ".machine power8" and related mnemonics? > > I was unable to test with binutils 2.25 (The minimum version listed on > INSTALL). The oldest binutils I tested was 2.26. I also failed at > find out on binutils repository in which version they added support for > power8. > > But I do have a reasonable guess to said question. Since some > implementations in the same folder (of my changes) already uses > ".machine power8" it is reasonable to assume that for some time now the > minimum required binutils of past glibc versions have native support for > power8. I tested your patch with binutils 2.25 and it works correctly. Your assumption was correct. > Also with binutils 2.25 glibc already does not build for power because > the use of "xssqrtqp" which is a power9 instruction (assuming > --enable-multi-arch, which is the default). So 2.26 is already the "the > facto" minimum binutils on power. For the sake of clarity, the problem with xssqrtqp only happens on powerpc64le, but I agree with your explanation. > 2019-06-27 Raoni Fassina Firmino The patch looks good and I can commit it for you, but may I assume you are covered by IBM's copyright assignment? CC'ing Tulio and Carlos, whom I remember understand this process.