From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 13369 invoked by alias); 21 Jun 2011 10:11:12 -0000 Received: (qmail 13359 invoked by uid 22791); 21 Jun 2011 10:11:12 -0000 X-SWARE-Spam-Status: No, hits=-1.8 required=5.0 tests=AWL,BAYES_00,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from mail.codesourcery.com (HELO mail.codesourcery.com) (38.113.113.100) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Tue, 21 Jun 2011 10:10:57 +0000 Received: (qmail 7591 invoked from network); 21 Jun 2011 10:10:57 -0000 Received: from unknown (HELO digraph.polyomino.org.uk) (joseph@127.0.0.2) by mail.codesourcery.com with ESMTPA; 21 Jun 2011 10:10:57 -0000 Received: from jsm28 (helo=localhost) by digraph.polyomino.org.uk with local-esmtp (Exim 4.72) (envelope-from ) id 1QYxv5-0008Ih-Gu; Tue, 21 Jun 2011 10:10:55 +0000 Date: Tue, 21 Jun 2011 10:47:00 -0000 From: "Joseph S. Myers" To: Xinyu Qi cc: "gcc-patches@gcc.gnu.org" , ramana.radhakrishnan@arm.com Subject: Re: [PATCH, ARM] iWMMXT maintenance In-Reply-To: <4737A960563B524DA805CA602BE04B306010BD2373@SC-VEXCH2.marvell.com> Message-ID: References: <4737A960563B524DA805CA602BE04B306010BD2373@SC-VEXCH2.marvell.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII 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 X-SW-Source: 2011-06/txt/msg01578.txt.bz2 On Mon, 20 Jun 2011, Xinyu Qi wrote: > *gcc/config/arm/elf.h: Add option -mwmmxt. > *gcc/config/arm/arm.opt: Same. Why? And where are the documentation updates? How does this relate to the existing iWMMXt options? I thought the plan (Ramana?) was to move to having a -msimd= option to select SIMD units, reflecting that "neon" is not an FPU and "iwmmxt" is not an architecture (or a CPU). So you'd have -march=armv5te -msimd=iwmmxt as replacement for the present -march=iwmmxt - or -mcpu= implying that combination of options. Given that idea I'm not sure adding another legacy option makes sense - at least the option should have the desired -msimd=iwmmxt spelling. -- Joseph S. Myers joseph@codesourcery.com