From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf1-x42d.google.com (mail-pf1-x42d.google.com [IPv6:2607:f8b0:4864:20::42d]) by sourceware.org (Postfix) with ESMTPS id 7EA9D3858424 for ; Sat, 29 Oct 2022 04:20:35 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 7EA9D3858424 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-pf1-x42d.google.com with SMTP id m6so6423796pfb.0 for ; Fri, 28 Oct 2022 21:20:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=sFhSbgRgGp8rfUNNncnDXcAekzzXMe2tVGxGjbtfNwE=; b=hlmUTV88LNtN7ApD/UEjNfHkH/L9dxKK42+3gd/AA4ZHPUPxKLOYdTzY9CsB+ke0T2 QfEop8AaJsTkcVI1IKznSv0htsb9/kZClvH2PyAfomYFpn/N1o4qekgHoLJjQcBs49G0 uxUQjiEjo+t3lNF+bix5JdKxJg1RFL+sij6M2jr5ohEoDnrT/8eo/FPK3JRTwRAGeG9S 8rbM0Hgi5DZnVSN5nvpt8fvNvYazrlelfnE7fFGQ24EYjjpM3ksPmYa866A6pZc19KNG N4OcrOAvx1sXwGHPnQ08MppILXFJ05cqGxLgtCcYlJObop3d3reIokHWdkB6ytxKG0JG w37w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=sFhSbgRgGp8rfUNNncnDXcAekzzXMe2tVGxGjbtfNwE=; b=sRmbmYPaTxp3TZosr7lyQEq650YghApkY4KlpFbXdumRXtC9mqJPPcr4gHhyEEzPLZ pfzPfIOOkzY/+6Sq3/lPXO6qpu25nGMEMRCpxmbNP3GymQ+M5aden99CxLpogeLnEbLF XdS8hDBUyAAOK8rgQmp1au/LQ7j3cMcm8QNPQ8u9YhFlF5gjf9+yNsnOWbX/06xA7Pox wyAltAb04SCtd2Wh+v3LAKhw4qG1ZXUcx27DO3sXC3lDTLvjpYcGsKOh09/RmJlmsjiF a5kAQKl1Xrwx76zl6QQf/z9D71YpXitYavnIBSI93jnmUWRrGCNxylcwZZdgfWk8t2X4 bOGw== X-Gm-Message-State: ACrzQf0NMIKUmanCykrrgZC++RPeKf8oQQkNyeYASyYabpxGqpMXoDhC 136pjpiMiJXlybuGbqCF5A4= X-Google-Smtp-Source: AMsMyM7nkzq/wD+naS0P2jatgyAu+9WMeQaFfbGFa5NImrBwsTOQ5BjZbh65bXeVLb/pDJDql6rYYQ== X-Received: by 2002:a62:6544:0:b0:561:7446:fdf4 with SMTP id z65-20020a626544000000b005617446fdf4mr2924797pfb.41.1667017234288; Fri, 28 Oct 2022 21:20:34 -0700 (PDT) Received: from ?IPV6:2601:681:8600:13d0::f0a? ([2601:681:8600:13d0::f0a]) by smtp.gmail.com with ESMTPSA id b15-20020a170902650f00b001869ba04c83sm248859plk.245.2022.10.28.21.20.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 28 Oct 2022 21:20:33 -0700 (PDT) Message-ID: <034805f8-1ddc-6280-1b0a-b60cf70fcdb6@gmail.com> Date: Fri, 28 Oct 2022 22:20:32 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.3.1 Subject: Re: [PATCH] libgcc: Special-case BFD ld unwind table encodings in find_fde_tail Content-Language: en-US To: Florian Weimer , gcc-patches@gcc.gnu.org References: <87zgdun7ja.fsf@oldenburg.str.redhat.com> From: Jeff Law In-Reply-To: <87zgdun7ja.fsf@oldenburg.str.redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-2.7 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=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On 10/17/22 03:06, Florian Weimer via Gcc-patches wrote: > BFD ld (and the other linkers) only produce one encoding of these > values. It is not necessary to use the general > read_encoded_value_with_base decoding routine. This avoids the > data-dependent branches in its implementation. > > libgcc/ > > * unwind-dw2-fde-dip.c (find_fde_tail): Special-case encoding > values actually used by BFD ld. OK. jeff