From patchwork Mon Jul 10 14:16:02 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Preudhomme X-Patchwork-Id: 786212 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3x5nM83hbwz9ryr for ; Tue, 11 Jul 2017 00:16:18 +1000 (AEST) Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=gcc.gnu.org header.i=@gcc.gnu.org header.b="FK5Dsflu"; dkim-atps=neutral DomainKey-Signature: a=rsa-sha1; c=nofws; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:to :from:subject:message-id:date:mime-version:content-type; q=dns; s=default; b=mZV6zhUPAdFwEeQUR/T92N5Nf6quFvIbpbmCmwxC6Ot+lgnF1s wUxy0DYDC0NZeMbHEQHo6vge05f0WxaefKu5T2Lt9xedltzRCiXv8vk9cJD03idy UAs/gsB0Cw+xf859Jw9doeyIsjXvOfPrV5xyrSg2qhX6yvXZtWwgGOXa8= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:to :from:subject:message-id:date:mime-version:content-type; s= default; bh=ZGSvwNATQqJ1050wLaG7+ivgHcc=; b=FK5Dsflu1/0WwBCqhExZ 97vioO820eiPAPDfO9x9/NRn8Vj5yKxFpyD0pCGOWxoJWCrtDZYdeQmrXANU/HEA Wnpa50SqKUdFTRXDVUFLbWlNREuZfR2pNkyYWnKwayqYXDX1UivHmHr5xVSO73md BzquroQJG6Ba6VNJ8xqa3wA= Received: (qmail 90533 invoked by alias); 10 Jul 2017 14:16:08 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Delivered-To: mailing list gcc-patches@gcc.gnu.org Received: (qmail 89582 invoked by uid 89); 10 Jul 2017 14:16:07 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-25.9 required=5.0 tests=BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_LAZY_DOMAIN_SECURITY, RP_MATCHES_RCVD autolearn=ham version=3.3.2 spammy=configuring X-HELO: foss.arm.com Received: from foss.arm.com (HELO foss.arm.com) (217.140.101.70) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Mon, 10 Jul 2017 14:16:06 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 0CD5C13D5 for ; Mon, 10 Jul 2017 07:16:04 -0700 (PDT) Received: from [10.2.206.52] (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id AF8393F540 for ; Mon, 10 Jul 2017 07:16:03 -0700 (PDT) To: "gcc-patches@gcc.gnu.org" From: Thomas Preudhomme Subject: [arm-embedded] [embedded-6-branch] Remove ARMv7E-M FPV4-SP-D16 build from rmprofile multilib Message-ID: <8ee4d3d3-b3d7-8348-9faa-a953d177fb4b@foss.arm.com> Date: Mon, 10 Jul 2017 15:16:02 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.1 MIME-Version: 1.0 X-IsSubscribed: yes Hi, The new instructions in FPV5-SP-D16 compared to FPv4-SP-D16 are not generated when building libgcc, newlib of libstdc++ such that libgcc.a, libc.a and libstdc++.a have the same objdump output for these two variants. It is therefore a waste of build time to be building a multilib for ARMv7E-M FPV5-SP-D16 when selecting rmprofile multilib variant. This patch applied to embedded-6-branch removes that multilib and map FPv5-SP-D16 to FPv4-SP-D16. ChangeLog entry is as follows: *** gcc/ChangeLog.arm *** 2017-07-04 Thomas Preud'homme * config/arm/t-rmprofile: Remove multilibs for fpv5-sp-d16 and map it to fpv4-sp-d16. Tested by configuring GCC with --with-multilib-list=rmprofile, building it and running the following: % ./install/bin/arm-none-eabi-gcc -march=armv7e-m -mfpu=fpv5-sp-d16 -mfloat-abi=hard -print-multi-directory thumb/v7e-m/fpv4-sp/hard % ./install/bin/arm-none-eabi-gcc -march=armv7e-m -mfpu=fpv5-sp-d16 -mfloat-abi=softfp -print-multi-directory thumb/v7e-m/fpv4-sp/softfp Best regards, Thomas diff --git a/gcc/config/arm/t-rmprofile b/gcc/config/arm/t-rmprofile index 93aa909b4d942ad9875a95e0d4397ff17b317905..0f3742009b1459f14d5ebbaaeb0fd080e79c8acb 100644 --- a/gcc/config/arm/t-rmprofile +++ b/gcc/config/arm/t-rmprofile @@ -74,8 +74,6 @@ MULTILIB_REQUIRED += mthumb/march=armv7e-m/mfpu=fpv4-sp-d16/mfloat-abi=soft MULTILIB_REQUIRED += mthumb/march=armv7e-m/mfpu=fpv4-sp-d16/mfloat-abi=hard MULTILIB_REQUIRED += mthumb/march=armv7e-m/mfpu=fpv5-d16/mfloat-abi=softfp MULTILIB_REQUIRED += mthumb/march=armv7e-m/mfpu=fpv5-d16/mfloat-abi=hard -MULTILIB_REQUIRED += mthumb/march=armv7e-m/mfpu=fpv5-sp-d16/mfloat-abi=softfp -MULTILIB_REQUIRED += mthumb/march=armv7e-m/mfpu=fpv5-sp-d16/mfloat-abi=hard # ARMv8-M Mainline MULTILIB_REQUIRED += mthumb/march=armv8-m.main @@ -174,3 +172,7 @@ MULTILIB_REUSE += mthumb/march.armv7/mfpu.vfpv3-d16/mfloat-abi.softfp=ma MULTILIB_REUSE += mthumb/march.armv7/mfpu.vfpv3-d16/mfloat-abi.hard=march.armv7/mfpu.fpv5-d16/mfloat-abi.hard MULTILIB_REUSE += mthumb/march.armv7/mfpu.vfpv3-d16/mfloat-abi.softfp=mthumb/march.armv7/mfpu.fpv5-d16/mfloat-abi.softfp MULTILIB_REUSE += mthumb/march.armv7/mfpu.vfpv3-d16/mfloat-abi.hard=mthumb/march.armv7/mfpu.fpv5-d16/mfloat-abi.hard + +# Map ARMv7E-M FPV5-SP-D16 to FPV4-SP-D16 +MULTILIB_REUSE += mthumb/march.armv7e-m/mfpu.fpv4-sp-d16/mfloat-abi.softfp=mthumb/march.armv7e-m/mfpu.fpv5-sp-d16/mfloat-abi.softfp +MULTILIB_REUSE += mthumb/march.armv7e-m/mfpu.fpv4-sp-d16/mfloat-abi.hard=mthumb/march.armv7e-m/mfpu.fpv5-sp-d16/mfloat-abi.hard