From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by sourceware.org (Postfix) with ESMTPS id 3DA3D3858431; Fri, 16 Jun 2023 08:15:06 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 3DA3D3858431 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=linux.ibm.com Received: from pps.filterd (m0356516.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 35G7qka5018317; Fri, 16 Jun 2023 08:15:04 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : content-transfer-encoding : mime-version; s=pp1; bh=3O4X3fS9N9B1dy+NhZMu2ZawycfbyiISrpk0cBtbdjA=; b=LhRa0BP6kAJHWvy+3VKDEmSaMp5jamfs1OVI2HuXZDviN8FyHg6VQNOAK+IB6C19Wsjo 6spiG4Wn1b8KY0XlCAnC79akYkR7ZYdbMkL+tlYSvg/IKGb4v7BGhN+pRufJJPbol7gq TaQMHygvhTF5+KpGjvcz0fbFaY2KZiu+tfyuMEI6uXjJPb/bWIuzfTQJPVGGQJgPMah7 PF16di0xDPRK32ajaa0cck+IBmysWgTIyQ5KZkEJMu8Gm+RUgLEL/cdyBrrv20v/ldMS +KPw06/bQ7Gwwr8SJ6aXBySTj8b8sm5RI6kE615clsrM8cqgzHgLypSurlm9KKbSeBrj Zg== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3r8kqvrjrp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 16 Jun 2023 08:15:03 +0000 Received: from m0356516.ppops.net (m0356516.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 35G7vjNh032613; Fri, 16 Jun 2023 08:15:03 GMT Received: from ppma03fra.de.ibm.com (6b.4a.5195.ip4.static.sl-reverse.com [149.81.74.107]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3r8kqvrjqr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 16 Jun 2023 08:15:03 +0000 Received: from pps.filterd (ppma03fra.de.ibm.com [127.0.0.1]) by ppma03fra.de.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 35G2vv8S015696; Fri, 16 Jun 2023 08:15:01 GMT Received: from smtprelay02.fra02v.mail.ibm.com ([9.218.2.226]) by ppma03fra.de.ibm.com (PPS) with ESMTPS id 3r4gt533ym-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 16 Jun 2023 08:15:01 +0000 Received: from smtpav01.fra02v.mail.ibm.com (smtpav01.fra02v.mail.ibm.com [10.20.54.100]) by smtprelay02.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 35G8EwvP28115670 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 16 Jun 2023 08:14:58 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 067132005A; Fri, 16 Jun 2023 08:14:58 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 88B152004E; Fri, 16 Jun 2023 08:14:56 +0000 (GMT) Received: from ltcden2-lp1.aus.stglabs.ibm.com (unknown [9.3.90.43]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 16 Jun 2023 08:14:56 +0000 (GMT) From: Jiufu Guo To: gcc-patches@gcc.gnu.org Cc: segher@kernel.crashing.org, dje.gcc@gmail.com, linkw@gcc.gnu.org, bergner@linux.ibm.com, guojiufu@linux.ibm.com, rguenther@suse.de, richard.sandiford@arm.com, jeffreyalaw@gmail.com Subject: [PATCH] Check SCALAR_INT_MODE_P in try_const_anchors Date: Fri, 16 Jun 2023 16:14:55 +0800 Message-Id: <20230616081455.1697928-1-guojiufu@linux.ibm.com> X-Mailer: git-send-email 2.39.3 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 7Tnqkp7DlWwdG5cjDBUzZZ1wwHVvMM4A X-Proofpoint-GUID: VnJgagPBu9HX8VV16QyVFKt0hWUPhBVE Content-Transfer-Encoding: 8bit X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-06-16_04,2023-06-15_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxlogscore=999 priorityscore=1501 malwarescore=0 spamscore=0 clxscore=1015 suspectscore=0 mlxscore=0 phishscore=0 impostorscore=0 bulkscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306160071 X-Spam-Status: No, score=-10.9 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,GIT_PATCH_0,KAM_SHORT,RCVD_IN_MSPIKE_H5,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: Hi, The const_anchor in cse.cc supports integer constants only. There is a "gcc_assert (SCALAR_INT_MODE_P (mode))" in try_const_anchors. In the latest code, some non-integer modes are used with const int. For examples: "set (mem/c:BLK (xx) (const_int 0 [0])" occur in md files of rs6000, i386, arm, and pa. For this, the mode may be BLKmode. Pattern "(set (strict_low_part (xx)) (const_int xx))" could be generated in a few ports. For this, the mode may be VOIDmode. So, avoid mode other than SCALAR_INT_MODE in try_const_anchors would be needed. Some discussions in the previous thread: https://gcc.gnu.org/pipermail/gcc-patches/2023-June/621097.html Bootstrap ®test pass on ppc64{,le} and x86_64. Is this ok for trunk? BR, Jeff (Jiufu Guo) gcc/ChangeLog: * cse.cc (try_const_anchors): Check SCALAR_INT_MODE. --- gcc/cse.cc | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/gcc/cse.cc b/gcc/cse.cc index 2bb63ac4105..ddb76fd281d 100644 --- a/gcc/cse.cc +++ b/gcc/cse.cc @@ -1312,11 +1312,10 @@ try_const_anchors (rtx src_const, machine_mode mode) rtx lower_exp = NULL_RTX, upper_exp = NULL_RTX; unsigned lower_old, upper_old; - /* CONST_INT is used for CC modes, but we should leave those alone. */ - if (GET_MODE_CLASS (mode) == MODE_CC) + /* CONST_INT may be in various modes, avoid non-scalar-int mode. */ + if (!SCALAR_INT_MODE_P (mode)) return NULL_RTX; - gcc_assert (SCALAR_INT_MODE_P (mode)); if (!compute_const_anchors (src_const, &lower_base, &lower_offs, &upper_base, &upper_offs)) return NULL_RTX; -- 2.39.3