From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg1-f174.google.com (mail-pg1-f174.google.com [209.85.215.174]) by sourceware.org (Postfix) with ESMTPS id 603E8385702E for ; Thu, 17 Dec 2020 07:10:20 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 603E8385702E Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=maskray.me Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=emacsray@gmail.com Received: by mail-pg1-f174.google.com with SMTP id k65so9388922pgk.0 for ; Wed, 16 Dec 2020 23:10:20 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:subject:message-id:mime-version :content-disposition; bh=eQkU+PaCdTluEeO5CZkINkWH2+8ge3J8sU35o8H4Hp4=; b=lCj0FCp47yhrLuHA7MZyBOaA06Y0YK/ET6ZRLYJpa6FpfO9V0viJCTf2jaar/sC4RS WwUb1vKZxwf9zJL/AZFdWwWSbNvIKJAeW3Gnx4pI4TDF4yWY0qVdeP4U9+qCWgduDMui a/YoMIfzCSGtY+n/DOGk9aUxDfm7wQwtjKeLpMRvVWtEmdR6hyPR2CJ03H4SUEP91ikq 7423Vvxhngm09b3pPr17oQq1aod57kTbjIgyzatKzT9N6501+opprsIkd4aesXgwn2W2 6zAch6G4JsAGCJtymdGTo5JaxlC0GmBDcSPOC0GK7xSb6T/m7YsnSRsI+Gacv4i6qflP LLOw== X-Gm-Message-State: AOAM532bBR3sNyH9L7tYohOqJ06DWlCG0g5IaqahcmnRFJ6qcR4tMQBP 3wUPDQxmglwSoEvgP70G06Si/4UtoRM= X-Google-Smtp-Source: ABdhPJxEuucTFepQ9lbe70cCKKKQY8xJDakVMKoxFHErMUz5SM6mstF1zpgf9j9K5JVjSv1as5+qRA== X-Received: by 2002:a63:b46:: with SMTP id a6mr16764338pgl.143.1608189019214; Wed, 16 Dec 2020 23:10:19 -0800 (PST) Received: from localhost ([2601:647:4b01:ae80::264c]) by smtp.gmail.com with ESMTPSA id o2sm4845456pgi.60.2020.12.16.23.10.18 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Dec 2020 23:10:18 -0800 (PST) Date: Wed, 16 Dec 2020 23:10:17 -0800 From: Fangrui Song To: gcc@gcc.gnu.org Subject: Add -fdirect-access-external-data Message-ID: <20201217071017.xylpud62keerb54u@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00, FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS, KAM_DMARC_STATUS, KAM_INFOUSMEBIZ, KAM_SHORT, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=no 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: Thu, 17 Dec 2020 07:10:21 -0000 Hi, I filed https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98112 which proposes -fdirect-access-external-data to address some x86-64 GCC/binutils pain[1] and also benefit non-x86 architectures (also see [1] it can prevent copy relocations). [1] Mentioned in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98112#c2 Since I am going to add this option to Clang and I hope (once GCC decides to implement this option the two compilers can use the same option name), I bring it to your attention. Please CC me on replies:)