From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752978AbcG2Nnm (ORCPT ); Fri, 29 Jul 2016 09:43:42 -0400 Received: from bh-25.webhostbox.net ([208.91.199.152]:44180 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752193AbcG2Nnk (ORCPT ); Fri, 29 Jul 2016 09:43:40 -0400 Subject: Re: Build failure in linux mainline when building arcv2 images To: Vineet Gupta References: <579ACC26.9020106@roeck-us.net> <25e43ee1-5015-9dc3-777e-6101872f2ec4@synopsys.com> Cc: linux-snps-arc@lists.infradead.org, "linux-kernel@vger.kernel.org" , Jeff Moyer , Alexey Brodkin From: Guenter Roeck Message-ID: <579B5D79.8060907@roeck-us.net> Date: Fri, 29 Jul 2016 06:43:21 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: <25e43ee1-5015-9dc3-777e-6101872f2ec4@synopsys.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Authenticated_sender: linux@roeck-us.net X-OutGoing-Spam-Status: No, score=-1.0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bh-25.webhostbox.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - roeck-us.net X-Get-Message-Sender-Via: bh-25.webhostbox.net: authenticated_id: linux@roeck-us.net X-Authenticated-Sender: bh-25.webhostbox.net: linux@roeck-us.net X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/28/2016 10:20 PM, Vineet Gupta wrote: > Hi Guenter, > > On 07/28/2016 08:23 PM, Guenter Roeck wrote: >> Hi Vineet, >> >> Mainline fails to build arcv2 images with the following error. >> >> {standard input}: Assembler messages: >> {standard input}:19174: Error: Instruction with long immediate data in delay slot >> make[2]: *** [block/cfq-iosched.o] Error 1 >> >> Bisect points to commit 9a7f38c42c2 ("cfq-iosched: Convert from jiffies to >> nanoseconds"), >> but I don't really hold it responsible. It looks more like a compiler / binutils >> problem >> to me. > > Indeed - triggers a latent bug in ARC gcc ! > >> I am using a toolchain built with buildroot (gcc 4.8.3). Is there a more recent >> toolchain >> than the one in buildroot available, by any chance ? If yes, where do I find it ? > > Yeah there's a 4.8.5 based one (referred to as GNU 2016.03) - will prebuilt > toolchain suffice or would you prefer building on your own. Prebuilt could be > found below. > > https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases/tag/arc-2016.03 > > For building on your own, Alexey can point to upstream buildroot which enabled > 2016.03 tools. > Unfortunately, I get the same error when using "arc-linux-gcc.br_real (Buildroot 2016.05) 4.8.5". Guenter