From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by sourceware.org (Postfix) with ESMTPS id 7256A3858D20; Wed, 30 Nov 2022 02:22:01 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 7256A3858D20 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 (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2ATN7RiU017008; Wed, 30 Nov 2022 02:21:59 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id; s=pp1; bh=9u1H6v6iFIAD6iMnspwVjZxMV+3l+d4QY457+HnjLOI=; b=WN/rJdpETbAROa/NybG9t08lGj1v7KQrhBHjaWyzBkUqFM717MJDEOGzKSv6NeI8WS+s 3CNuSTGRlSTIwXh6MVs2C8NAVqY3ZIVw9MwzH4qtlK5UwyyQSc2Za3s0SsutTGm1sRyM ZoGLGwcFegn/CNqv9jTtEwS+/tv336pddlweyumybsDPxG1gjVeJmCaj9l0QQCUFpIET BpLWKhaQeyzl5MlXx88LhK+ah7KMRmjuotMtMyY6IuofreqKEBaI6QTRo4+aCEEvVTeX Ou5wHt7Crdlbe4uh2ghtqIgfQq0lUZxgOAP283bDDC+FqKmOA9iL+FOYy3TgbPlrEXgM cA== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3m5s24yjuk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 30 Nov 2022 02:21:59 +0000 Received: from m0098399.ppops.net (m0098399.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 2AU2JRSE003591; Wed, 30 Nov 2022 02:21:58 GMT Received: from ppma05fra.de.ibm.com (6c.4a.5195.ip4.static.sl-reverse.com [149.81.74.108]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3m5s24yju2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 30 Nov 2022 02:21:58 +0000 Received: from pps.filterd (ppma05fra.de.ibm.com [127.0.0.1]) by ppma05fra.de.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 2AU2LNh0019651; Wed, 30 Nov 2022 02:21:56 GMT Received: from b06avi18626390.portsmouth.uk.ibm.com (b06avi18626390.portsmouth.uk.ibm.com [9.149.26.192]) by ppma05fra.de.ibm.com with ESMTP id 3m3ae9bmxe-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 30 Nov 2022 02:21:56 +0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06avi18626390.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 2AU2FPEu61210992 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 30 Nov 2022 02:15:25 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CEAFD4C040; Wed, 30 Nov 2022 02:21:53 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 06F9C4C044; Wed, 30 Nov 2022 02:21:53 +0000 (GMT) Received: from pike.rch.stglabs.ibm.com (unknown [9.5.12.127]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 30 Nov 2022 02:21:52 +0000 (GMT) From: Jiufu Guo To: gcc-patches@gcc.gnu.org Cc: segher@kernel.crashing.org, dje.gcc@gmail.com, linkw@gcc.gnu.org, guojiufu@linux.ibm.com Subject: [PATCH] NFC: use more readable pattern to clean high 32 bits Date: Wed, 30 Nov 2022 10:21:52 +0800 Message-Id: <20221130022152.190824-1-guojiufu@linux.ibm.com> X-Mailer: git-send-email 2.17.1 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: c34SLM0kUWeQwAMZU1fStE17nfsjLl3x X-Proofpoint-ORIG-GUID: TfMxcCRYIcakGd5x5Z5Ca1xuZJsnGyfd X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-11-30_02,2022-11-29_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 priorityscore=1501 mlxlogscore=999 mlxscore=0 clxscore=1015 adultscore=0 lowpriorityscore=0 bulkscore=0 spamscore=0 phishscore=0 malwarescore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2211300009 X-Spam-Status: No, score=-11.9 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,GIT_PATCH_0,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,TXREP 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, This patch is just using a more readable pattern for "rldicl x,x,0,32" to clean high 32bits. Old pattern looks like: r118:DI=zero_extend(r120:DI#0) new pattern looks like: r118:DI=r120:DI&0xffffffff Bootstrap and regtest pass on ppc64{,le}. Is this ok for trunk? BR, Jeff (Jiufu) gcc/ChangeLog: * config/rs6000/rs6000.cc (rs6000_emit_set_long_const): Update zero_extend(reg:DI#0) to reg:DI&0xffffffff --- gcc/config/rs6000/rs6000.cc | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc index eb7ad5e954f..5efe9b22d8b 100644 --- a/gcc/config/rs6000/rs6000.cc +++ b/gcc/config/rs6000/rs6000.cc @@ -10267,10 +10267,7 @@ rs6000_emit_set_long_const (rtx dest, HOST_WIDE_INT c) emit_move_insn (copy_rtx (temp), gen_rtx_IOR (DImode, copy_rtx (temp), GEN_INT (ud1))); - emit_move_insn (dest, - gen_rtx_ZERO_EXTEND (DImode, - gen_lowpart (SImode, - copy_rtx (temp)))); + emit_move_insn (dest, gen_rtx_AND (DImode, temp, GEN_INT (0xffffffff))); } else if (ud1 == ud3 && ud2 == ud4) { -- 2.17.1