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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 92582C433E0 for ; Thu, 9 Jul 2020 00:18:25 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4614520775 for ; Thu, 9 Jul 2020 00:18:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4614520775 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.crashing.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4B2Gwv133JzDqvV for ; Thu, 9 Jul 2020 10:18:23 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=permerror (SPF Permanent Error: Unknown mechanism found: ip:192.40.192.88/32) smtp.mailfrom=kernel.crashing.org (client-ip=63.228.1.57; helo=gate.crashing.org; envelope-from=segher@kernel.crashing.org; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=kernel.crashing.org Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) by lists.ozlabs.org (Postfix) with ESMTP id 4B2Gsy2DPSzDqr6 for ; Thu, 9 Jul 2020 10:15:50 +1000 (AEST) Received: from gate.crashing.org (localhost.localdomain [127.0.0.1]) by gate.crashing.org (8.14.1/8.14.1) with ESMTP id 0690Fbi9019654; Wed, 8 Jul 2020 19:15:37 -0500 Received: (from segher@localhost) by gate.crashing.org (8.14.1/8.14.1/Submit) id 0690FboB019653; Wed, 8 Jul 2020 19:15:37 -0500 X-Authentication-Warning: gate.crashing.org: segher set sender to segher@kernel.crashing.org using -f Date: Wed, 8 Jul 2020 19:15:36 -0500 From: Segher Boessenkool To: Mathieu Desnoyers Subject: Re: Failure to build librseq on ppc Message-ID: <20200709001536.GC3598@gate.crashing.org> References: <972420887.755.1594149430308.JavaMail.zimbra@efficios.com> <20200708005922.GW3598@gate.crashing.org> <841816533.1735.1594211583710.JavaMail.zimbra@efficios.com> <1623833219.1877.1594216801865.JavaMail.zimbra@efficios.com> <96994487-ae4a-3bfb-b0f1-34228e51bea2@csgroup.eu> <1137155888.2676.1594218740683.JavaMail.zimbra@efficios.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1137155888.2676.1594218740683.JavaMail.zimbra@efficios.com> User-Agent: Mutt/1.4.2.3i X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Boqun Feng , linuxppc-dev , Michael Jeanson Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Wed, Jul 08, 2020 at 10:32:20AM -0400, Mathieu Desnoyers wrote: > > As far as I can see, %U is mentioned in > > https://gcc.gnu.org/onlinedocs/gcc/Machine-Constraints.html in the > > powerpc subpart, at the "m" constraint. > > Yep, I did notice it, but mistakenly thought it was only needed for "m<>" operand, > not "m". Historically, "m" meant what "m<>" does now (in inline asm). Too many people couldn't get it right ever (on other targets -- not that the situation was great for PowerPC, heh), so in inline asm "m" now means "no pre-modify or post-modify". Segher