From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by sourceware.org (Postfix) with ESMTPS id 33D033947407 for ; Tue, 13 Apr 2021 16:04:29 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 33D033947407 Received: by mail-pj1-x1031.google.com with SMTP id t23so8701678pjy.3 for ; Tue, 13 Apr 2021 09:04:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=qK2wwlVNFbaq/mpml1xvEphiXwHsIOHw1Z0XcLJJ0M8=; b=E0Jtavv8cj+M4k+9QMADdhv1fXrPrjd+9hog0+5b5U5HCEKxJYc+u8jE5SQKvtLzTr QB6OsXiUFib86o78uVw/E2v+b73WF0YBtvtcUkAZ16W2WG2Xb8JQvdt0aMsvGFzoj9T4 /NP9B7MSXIPdXdlW85EwJtfkRwqgmu3SImySGuJQOULSjichpBxO0dFi/6N8RBiwfd5d 5mPxrad+iAvbjnSwMePMSRnGcayvaKUk8pvJB5v7Y+LY936F0v74Xcao0UgOtljUvw0T 6Q0PmoWusan4uOV+bQoK/016GlxJiCp2hr19feWvCpCz8nYgRXfDNavmtTNoAzfXBU5c j7gA== X-Gm-Message-State: AOAM531asDgC55QIhkTRYhEENBMDnIfTsfqZnXkm1T830wPzDmy1VlU/ XlhjhsgScdShAy9niZvE/Uzfsh6wEElPyw== X-Google-Smtp-Source: ABdhPJxcbFIuhVexYPNvz2oAf+/+Hdb2+6fuWaBz0rVRjg1m3qnABz30RffWxP59FA3WJpWXCe4ofg== X-Received: by 2002:a17:90b:344e:: with SMTP id lj14mr753295pjb.89.1618329867988; Tue, 13 Apr 2021 09:04:27 -0700 (PDT) Received: from [192.168.1.2] (c-98-202-48-222.hsd1.ut.comcast.net. [98.202.48.222]) by smtp.gmail.com with ESMTPSA id x69sm12810132pfd.161.2021.04.13.09.04.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 13 Apr 2021 09:04:27 -0700 (PDT) Subject: Re: Default debug format for AVR To: David Edelsohn Cc: Simon Marchi , Richard Biener , GCC Development References: <2cbc9ee0-31bf-f933-758f-8e5ebe8eab0e@polymtl.ca> <3d21f80d-6747-23fc-ab2c-3ebb53d5dd45@polymtl.ca> <7EFD1A72-F0EB-494E-92BF-92DE932B1CCE@gmail.com> <8e6f1f9b-13cf-c82c-a67b-b35cde4e2e31@polymtl.ca> <6ee7a0a1-1c2f-97a5-b169-e01ea4439f17@gmail.com> From: Jeff Law Message-ID: Date: Tue, 13 Apr 2021 10:04:26 -0600 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-Spam-Status: No, score=-1.7 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, NICE_REPLY_A, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: gcc@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 13 Apr 2021 16:04:32 -0000 >> Agreed. I'd bet AIX is the outlier here and that most, if not all, >> other ports that may currently be stabs-by-default can switch to >> dwarf-by-default with no significant fallout. So we fix everything we >> can while we wait for AIX to move forward. > I am not requesting a continuation of support for STABS to be > obstinate. AIX has some support for DWARF, but STABS continues to be > the primary debug format on AIX. Binutils does not fully function on > AIX and the AIX native tools support for DWARF is incomplete. Also, > AIX uses XCOFF file format, not ELF, so DWARF syntax needs to be > adapted and all of the tools need to agree on the way that AIX symbols > are represented in DWARF. Just to be clear, I didn't think you were being obstinate at all.  I was just pointing out that I think the other ports can and probably should change now (well, start of gcc-12 cycle), but that AIX can't yet. Jeff