From patchwork Wed May 15 12:39:32 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Christophe Lyon X-Patchwork-Id: 1100016 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=gcc.gnu.org (client-ip=209.132.180.131; helo=sourceware.org; envelope-from=gcc-patches-return-500771-incoming=patchwork.ozlabs.org@gcc.gnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=st.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=gcc.gnu.org header.i=@gcc.gnu.org header.b="qhEAmAP9"; dkim=pass (2048-bit key; unprotected) header.d=st.com header.i=@st.com header.b="FgckDIGN"; dkim-atps=neutral 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 453vN66tMpz9s9N for ; Wed, 15 May 2019 22:42:46 +1000 (AEST) DomainKey-Signature: a=rsa-sha1; c=nofws; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:from :to:subject:date:message-id:in-reply-to:references:mime-version :content-type:content-transfer-encoding; q=dns; s=default; b=WNx N+Dv3tC+c/EVlmLZNFpSCofOdOyWSy4+zKjd4J6n4vtOwgKQkFP++zA7+M3lCT7s 8SRMr+oG6zCa0+QNCwp1eTVmi69bZlaHH7fgH7WEaiCYJBIuXl7sExOCYvWPt4TN GgG5SgOxD3dLgdAzQAp0TJ3JqoL1BDBAoAeLUP3o= 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:from :to:subject:date:message-id:in-reply-to:references:mime-version :content-type:content-transfer-encoding; s=default; bh=CyrwNDF8f 3G0jvM3rQGiXKvkHPg=; b=qhEAmAP94Z/sWZ9wIdeSq93WYteGmh67RBIC+R7rU 6gvLKB7tK5M76MCFlF7NxKIMFOgCK2qO90O7SEwAI2kUOX2zhBZ5SVs0Eq66mPsA Jspo/40VF1FmESHf4D7e8+4kaWD/W9wHCAfhkwND27PzWktzfQxHEhshbBFJNcY7 4o= Received: (qmail 76690 invoked by alias); 15 May 2019 12:42:40 -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 76303 invoked by uid 89); 15 May 2019 12:42:40 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-15.5 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, RCVD_IN_DNSWL_LOW, SPF_PASS autolearn=ham version=3.3.1 spammy= X-HELO: mx07-00178001.pphosted.com Received: from mx08-00178001.pphosted.com (HELO mx07-00178001.pphosted.com) (91.207.212.93) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Wed, 15 May 2019 12:42:38 +0000 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx08-00178001.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x4FCfqRs022149 for ; Wed, 15 May 2019 14:42:36 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=st.com; h=from : to : subject : date : message-id : in-reply-to : references : mime-version : content-type : content-transfer-encoding; s=STMicroelectronics; bh=a5TMQAnew7zN/mIlQfeVb+dddY5xvbZ4gU0Eq5Morb0=; b=FgckDIGNGPQKa14Lok3dKHErWN7weCYRqX2pjP6GKK8R2lWixDX3znxtwuZrjCSOyejL 2byymDHz+OWwSq0VV5B2ZeuhX709UxA5xX0OeCA/tQ6fpy18MWXDUG+0DKCos0hIPOBS 9kNjO/shC3kWyRk6LpMG8Ko+08+1vv8dR/quYsScWHARlO/aZeg3XN91jnwmhqwHzJ9V EY1Y2wjhxNfQBGA6NS89b2gEu7PyTjhnc3VDdswfa9wG3aeOWxo5CJCpkrFuC8H4dziY og1zLEkXoLCqk0nHgU4wuj5Hm+1Fo4OMIrfFNPfttlJUDtt8HuaDWThvadyzz2zECD5K Nw== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-00178001.pphosted.com with ESMTP id 2sek5ajrc4-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Wed, 15 May 2019 14:42:36 +0200 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 2AA7938 for ; Wed, 15 May 2019 12:42:36 +0000 (GMT) Received: from Webmail-eu.st.com (sfhdag5node1.st.com [10.75.127.13]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 19BCD2757 for ; Wed, 15 May 2019 12:42:36 +0000 (GMT) Received: from gnb.st.com (10.75.127.45) by SFHDAG5NODE1.st.com (10.75.127.13) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Wed, 15 May 2019 14:42:35 +0200 From: Christophe Lyon To: Subject: [ARM/FDPIC v5 07/21] [ARM] FDPIC: Avoid saving/restoring r9 on stack since it is read-only Date: Wed, 15 May 2019 14:39:32 +0200 Message-ID: <20190515124006.25840-8-christophe.lyon@st.com> In-Reply-To: <20190515124006.25840-1-christophe.lyon@st.com> References: <20190515124006.25840-1-christophe.lyon@st.com> MIME-Version: 1.0 X-IsSubscribed: yes 2019-XX-XX Christophe Lyon Mickaël Guêné gcc/ * config/arm/arm.h (PIC_REGISTER_MAY_NEED_SAVING): New helper. * config/arm/arm.c (arm_compute_save_reg0_reg12_mask): Handle FDPIC. Change-Id: I0f3b2023ab2a2a0433dfe081dac6bbb194b7a76c diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index d9397b5..dbd1671 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -19651,9 +19651,7 @@ arm_compute_save_reg0_reg12_mask (void) save_reg_mask |= (1 << reg); /* Also save the pic base register if necessary. */ - if (flag_pic - && !TARGET_SINGLE_PIC_BASE - && arm_pic_register != INVALID_REGNUM + if (PIC_REGISTER_MAY_NEED_SAVING && crtl->uses_pic_offset_table) save_reg_mask |= 1 << PIC_OFFSET_TABLE_REGNUM; } @@ -19685,9 +19683,7 @@ arm_compute_save_reg0_reg12_mask (void) /* If we aren't loading the PIC register, don't stack it even though it may be live. */ - if (flag_pic - && !TARGET_SINGLE_PIC_BASE - && arm_pic_register != INVALID_REGNUM + if (PIC_REGISTER_MAY_NEED_SAVING && (df_regs_ever_live_p (PIC_OFFSET_TABLE_REGNUM) || crtl->uses_pic_offset_table)) save_reg_mask |= 1 << PIC_OFFSET_TABLE_REGNUM; diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h index 7b50ef5..45c0e2b 100644 --- a/gcc/config/arm/arm.h +++ b/gcc/config/arm/arm.h @@ -1967,6 +1967,13 @@ extern unsigned arm_pic_register; || label_mentioned_p (get_pool_constant (X))))) \ || tls_mentioned_p (X)) +/* We may want to save the PIC register if it is a dedicated one. */ +#define PIC_REGISTER_MAY_NEED_SAVING \ + (flag_pic \ + && !TARGET_SINGLE_PIC_BASE \ + && !TARGET_FDPIC \ + && arm_pic_register != INVALID_REGNUM) + /* We need to know when we are making a constant pool; this determines whether data needs to be in the GOT or can be referenced via a GOT offset. */