From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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-Archive: List-Post: List-Help: Sender: gcc-patches-owner@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 14:16:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.1 MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="------------1161C7915566A7BA102B0624" X-IsSubscribed: yes X-SW-Source: 2017-07/txt/msg00464.txt.bz2 This is a multi-part message in MIME format. --------------1161C7915566A7BA102B0624 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-length: 1065 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 --------------1161C7915566A7BA102B0624 Content-Type: text/x-patch; name="drop_fpv5-sp-d16_multilib_gcc6.patch" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="drop_fpv5-sp-d16_multilib_gcc6.patch" Content-length: 1612 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 --------------1161C7915566A7BA102B0624--