From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 119753 invoked by alias); 9 Sep 2019 15:48:05 -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 119735 invoked by uid 89); 9 Sep 2019 15:48:04 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-26.6 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; Mon, 09 Sep 2019 15:48:02 +0000 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx08-00178001.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id x89FkGL6003551 for ; Mon, 9 Sep 2019 17:48:00 +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=SxKKe98Y2GYALZtAEgj0v4RtmnDno7TAQiGjNsJrIOo=; b=D/5z/hjuAwxE7x3hG1BQ87hzomQCLTVFcygSlbHTf9mMUc2sLLUV6oWesOEZrL7jSdId Z4BOhxfofLR5UcXwXZVCk+NgZCEgmjjibLyA/59JDIRL7gsXP8wHb/X9QTrdr9kwpibu ebNXBfALWin1UZM9UxaUidaVw1+o7I5GYvrN6tVke2WUg+Vrz7U7wAlOxQ5/gEtmXFLU kWedNopaYxs0kjdKUJ0EXFMUiSxsyP8VtHMg+3FDhHmKAnE++2FMkOZWCIbizWJDHb8m UbYsGpAJp7lyCbFmq+vUEe2jr8/dVEWTdeT3IASGq5a1E9wXLkcyzVyssO1kbv2WY75k AQ== Received: from beta.dmz-ap.st.com (beta.dmz-ap.st.com [138.198.100.35]) by mx08-00178001.pphosted.com with ESMTP id 2uv1pa70mm-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Mon, 09 Sep 2019 17:48:00 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id 4854A24 for ; Mon, 9 Sep 2019 15:47:57 +0000 (GMT) Received: from Webmail-eu.st.com (sfhdag5node1.st.com [10.75.127.13]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 73FEA2B9BE2 for ; Mon, 9 Sep 2019 17:47:54 +0200 (CEST) Received: from gnb.st.com (10.75.127.46) by SFHDAG5NODE1.st.com (10.75.127.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 9 Sep 2019 17:47:54 +0200 From: Christophe Lyon To: Subject: [ARM/FDPIC v6 07/24] [ARM] FDPIC: Avoid saving/restoring r9 on stack since it is read-only Date: Mon, 09 Sep 2019 15:48:00 -0000 Message-ID: <20190909154526.11630-8-christophe.lyon@st.com> In-Reply-To: <20190909154526.11630-1-christophe.lyon@st.com> References: <20190909154526.11630-1-christophe.lyon@st.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-IsSubscribed: yes X-SW-Source: 2019-09/txt/msg00540.txt.bz2 From: Christophe Lyon 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 c34aab8..6ff3001 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -19571,9 +19571,7 @@ 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; } @@ -19605,9 +19603,7 @@ 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 e404e2c..490d22d 100644 --- a/gcc/config/arm/arm.h +++ b/gcc/config/arm/arm.h @@ -1960,6 +1960,13 @@ 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. */ -- 2.6.3