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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 C2A6DC433DB for ; Sat, 16 Jan 2021 19:37:24 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 37497229C4 for ; Sat, 16 Jan 2021 19:37:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 37497229C4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=eik.bme.hu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:35834 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l0rNy-00028U-UU for qemu-devel@archiver.kernel.org; Sat, 16 Jan 2021 14:37:22 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:60706) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l0rMf-0001Y5-Jm; Sat, 16 Jan 2021 14:36:01 -0500 Received: from zero.eik.bme.hu ([152.66.115.2]:31826) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l0rMd-00057I-43; Sat, 16 Jan 2021 14:36:00 -0500 Received: from zero.eik.bme.hu (blah.eik.bme.hu [152.66.115.182]) by localhost (Postfix) with SMTP id 0ACE47456E3; Sat, 16 Jan 2021 20:35:55 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id D747D7456B8; Sat, 16 Jan 2021 20:35:54 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id D5F1B7456B7; Sat, 16 Jan 2021 20:35:54 +0100 (CET) Date: Sat, 16 Jan 2021 20:35:54 +0100 (CET) From: BALATON Zoltan To: Richard Henderson Subject: Re: Recent TCG commit breaks PPC In-Reply-To: <5310dc77-6fa6-36b2-dd51-cd6e1bebaddb@linaro.org> Message-ID: <81ac448f-d94f-2764-b96b-30209955a416@eik.bme.hu> References: <5310dc77-6fa6-36b2-dd51-cd6e1bebaddb@linaro.org> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="3866299591-1903694754-1610825754=:56046" Received-SPF: pass client-ip=152.66.115.2; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alistair Francis , qemu-ppc@nongnu.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --3866299591-1903694754-1610825754=:56046 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8BIT On Sat, 16 Jan 2021, Richard Henderson wrote: > On 1/16/21 4:38 AM, BALATON Zoltan wrote: >> >> Commit 8fe35e0444be (tcg/optimize: Use tcg_constant_internal with constant >> folding) seems to break PPC emulation for me: >> >> Thread 3 "qemu-system-ppc" received signal SIGSEGV, Segmentation fault. >> [Switching to Thread 0x7ffff51e7700 (LWP 22636)] >> 0x0000555555afd4ee in ts_are_copies (ts2=0x7fff8c008f90, ts1=0x7fff8c001510) at >> ../tcg/optimize.c:68 >> 68        return ts_info(ts)->next_copy != ts; > > I don't replicate this assertion. > > Interestingly, I replicate a different assertion: > > qemu-system-ppc: ../qemu/tcg/tcg.c:1210: tcg_temp_alloc: Assertion `n < 512' > failed. > Aborted (core dumped) > > What compiler version(s) are you guys using? I'm getting this with gcc 8.4.0 Regards, BALATON Zoltan --3866299591-1903694754-1610825754=:56046--