From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-toolchains-owner@kernel.org>
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=-5.3 required=3.0 tests=BAYES_00,
	HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,
	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 33B5CC56202
	for <linux-toolchains@archiver.kernel.org>; Tue, 24 Nov 2020 00:39:17 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [23.128.96.18])
	by mail.kernel.org (Postfix) with ESMTP id F214F20729
	for <linux-toolchains@archiver.kernel.org>; Tue, 24 Nov 2020 00:39:16 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1729816AbgKXAjQ (ORCPT
        <rfc822;linux-toolchains@archiver.kernel.org>);
        Mon, 23 Nov 2020 19:39:16 -0500
Received: from gate.crashing.org ([63.228.1.57]:54078 "EHLO gate.crashing.org"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1728093AbgKXAjQ (ORCPT
        <rfc822;linux-toolchains@vger.kernel.org>);
        Mon, 23 Nov 2020 19:39:16 -0500
Received: from gate.crashing.org (localhost.localdomain [127.0.0.1])
        by gate.crashing.org (8.14.1/8.14.1) with ESMTP id 0AO0Xw1G006038;
        Mon, 23 Nov 2020 18:33:58 -0600
Received: (from segher@localhost)
        by gate.crashing.org (8.14.1/8.14.1/Submit) id 0AO0XvPD006033;
        Mon, 23 Nov 2020 18:33:57 -0600
X-Authentication-Warning: gate.crashing.org: segher set sender to segher@kernel.crashing.org using -f
Date:   Mon, 23 Nov 2020 18:33:57 -0600
From:   Segher Boessenkool <segher@kernel.crashing.org>
To:     Arvind Sankar <nivedita@alum.mit.edu>
Cc:     Nick Desaulniers <ndesaulniers@google.com>,
        Masahiro Yamada <masahiroy@kernel.org>,
        Jakub Jelinek <jakub@redhat.com>,
        Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        linux-toolchains@vger.kernel.org,
        clang-built-linux <clang-built-linux@googlegroups.com>,
        Fangrui Song <maskray@google.com>,
        Nathan Chancellor <natechancellor@gmail.com>,
        Sedat Dilek <sedat.dilek@gmail.com>,
        Dmitry Golovin <dima@golovin.in>,
        Alistair Delva <adelva@google.com>
Subject: Re: [PATCH v2 3/4] Kbuild: make DWARF version a choice
Message-ID: <20201124003357.GR2672@gate.crashing.org>
References: <CAK7LNAST0Ma4bGGOA_HATzYAmRhZG=x_X=8p_9dKGX7bYc2FMA@mail.gmail.com> <20201104005343.4192504-1-ndesaulniers@google.com> <20201104005343.4192504-4-ndesaulniers@google.com> <20201123232210.GA208735@rani.riverdale.lan>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20201123232210.GA208735@rani.riverdale.lan>
User-Agent: Mutt/1.4.2.3i
Precedence: bulk
List-ID: <linux-toolchains.vger.kernel.org>
X-Mailing-List: linux-toolchains@vger.kernel.org

On Mon, Nov 23, 2020 at 06:22:10PM -0500, Arvind Sankar wrote:
> Btw, is -gsplit-dwarf at all useful for assembler files?

If you invoke the assembler via the compiler, with that flag it still
creates separate .o and .dwo files (via objcopy invocations as usual).
Whether that is useful depends on if you have any debug info that can
be split :-)


Segher