From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 48655 invoked by alias); 4 May 2015 17:34:13 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Received: (qmail 48645 invoked by uid 89); 4 May 2015 17:34:13 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.8 required=5.0 tests=AWL,BAYES_00,SPF_HELO_PASS,SPF_PASS,T_RP_MATCHES_RCVD autolearn=ham version=3.3.2 X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Mon, 04 May 2015 17:34:07 +0000 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id t44HY5rM001684 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 4 May 2015 13:34:05 -0400 Received: from localhost.localdomain (ovpn-113-143.phx2.redhat.com [10.3.113.143]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id t44HY5o1011356; Mon, 4 May 2015 13:34:05 -0400 Message-ID: <5547AD8D.9080806@redhat.com> Date: Mon, 04 May 2015 17:34:00 -0000 From: Jeff Law User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: Alexander Monakov , gcc-patches@gcc.gnu.org CC: Rich Felker Subject: Re: [PATCH] Expand PIC calls without PLT with -fno-plt References: <1430757479-14241-1-git-send-email-amonakov@ispras.ru> <1430757479-14241-6-git-send-email-amonakov@ispras.ru> In-Reply-To: <1430757479-14241-6-git-send-email-amonakov@ispras.ru> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes X-SW-Source: 2015-05/txt/msg00240.txt.bz2 On 05/04/2015 10:37 AM, Alexander Monakov wrote: > This patch introduces option -fno-plt that allows to expand calls that would > go via PLT to load the address of the function immediately at call site (which > introduces a GOT load). Cover letter explains the motivation for this patch. > > New option documentation for invoke.texi is missing from the patch; if this is > accepted I'll be happy to send a v2 with documentation added. > > * calls.c (prepare_call_address): Transform PLT call to GOT lookup and > indirect call by forcing address into a pseudo with -fno-plt. > * common.opt (flag_plt): New option. OK once you cobble together the invoke.texi changes. Jeff