From patchwork Fri Aug 12 06:39:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiufu Guo X-Patchwork-Id: 56690 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id B4B73385840F for ; Fri, 12 Aug 2022 06:40:36 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B4B73385840F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1660286436; bh=YpU+FxRlXeZblfVoWpzn7j+9o6ghGOAUowlwlfx8CiU=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:Cc:From; b=hyx2B1jmj+LrgKZT8DDAh7I4n3JJprwoKE90V5G51u2gyPPWdTs3vbtLqjrDtdXp0 HaHKLwdYsJ/AfO8qamCMjLNemtrM4/oNoO4+oPkmZRZI1f7bOZCdrFmX9l+bc2+IbI EgvK6qXvtf0F/z47cV2kYrJHRVPzTVC+5YkRqIPQ= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by sourceware.org (Postfix) with ESMTPS id 8161F3858D28; 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Fri, 12 Aug 2022 06:40:03 GMT Received: from b06cxnps4074.portsmouth.uk.ibm.com (d06relay11.portsmouth.uk.ibm.com [9.149.109.196]) by ppma02fra.de.ibm.com with ESMTP id 3huww0tc44-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 12 Aug 2022 06:40:03 +0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 27C6e1eo11141474 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 12 Aug 2022 06:40:01 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 09C4CA4055; Fri, 12 Aug 2022 06:40:01 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 40A2FA4040; Fri, 12 Aug 2022 06:40:00 +0000 (GMT) Received: from pike.rch.stglabs.ibm.com (unknown [9.5.12.127]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 12 Aug 2022 06:40:00 +0000 (GMT) To: gcc-patches@gcc.gnu.org Subject: [PATCH] rs6000: avoid ineffective replacement of splitters Date: Fri, 12 Aug 2022 14:39:59 +0800 Message-Id: <20220812063959.151705-1-guojiufu@linux.ibm.com> X-Mailer: git-send-email 2.17.1 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: Ab_RUd4ClQgAQtDov-_fm3-eLHU6s57w X-Proofpoint-ORIG-GUID: 7YzZbHuc3YZiJtSxVLX-GhFtFKyJlkKh X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-08-12_04,2022-08-11_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 spamscore=0 mlxscore=0 priorityscore=1501 malwarescore=0 suspectscore=0 clxscore=1015 mlxlogscore=999 phishscore=0 bulkscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2208120016 X-Spam-Status: No, score=-12.2 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, RCVD_IN_MSPIKE_H2, 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 X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Jiufu Guo via Gcc-patches From: Jiufu Guo Reply-To: Jiufu Guo Cc: dje.gcc@gmail.com, segher@kernel.crashing.org, linkw@gcc.gnu.org Errors-To: gcc-patches-bounces+patchwork=sourceware.org@gcc.gnu.org Sender: "Gcc-patches" Hi, As a comment in https://gcc.gnu.org/pipermail/gcc-patches/2022-August/599556.html Those splitters call rs6000_emit_set_const directly, and the replacements are never used. Using (pc) would be less misleading. This patch pass bootstrap®test on ppc64 BE and LE. Is this ok for trunk. BR, Jeff(Jiufu) gcc/ChangeLog: * config/rs6000/rs6000.md: (constant splitters): Use "(pc)" as the replacements. --- gcc/config/rs6000/rs6000.md | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md index 1367a2cb779..7fadbeef1aa 100644 --- a/gcc/config/rs6000/rs6000.md +++ b/gcc/config/rs6000/rs6000.md @@ -7727,11 +7727,7 @@ (define_split [(set (match_operand:SI 0 "gpc_reg_operand") (match_operand:SI 1 "const_int_operand"))] "num_insns_constant (operands[1], SImode) > 1" - [(set (match_dup 0) - (match_dup 2)) - (set (match_dup 0) - (ior:SI (match_dup 0) - (match_dup 3)))] + [(pc)] { if (rs6000_emit_set_const (operands[0], operands[1])) DONE; @@ -9662,8 +9658,7 @@ (define_split [(set (match_operand:DI 0 "int_reg_operand_not_pseudo") (match_operand:DI 1 "const_int_operand"))] "TARGET_POWERPC64 && num_insns_constant (operands[1], DImode) > 1" - [(set (match_dup 0) (match_dup 2)) - (set (match_dup 0) (plus:DI (match_dup 0) (match_dup 3)))] + [(pc)] { if (rs6000_emit_set_const (operands[0], operands[1])) DONE; @@ -9675,8 +9670,7 @@ (define_split [(set (match_operand:DI 0 "int_reg_operand_not_pseudo") (match_operand:DI 1 "const_scalar_int_operand"))] "TARGET_POWERPC64 && num_insns_constant (operands[1], DImode) > 1" - [(set (match_dup 0) (match_dup 2)) - (set (match_dup 0) (plus:DI (match_dup 0) (match_dup 3)))] + [(pc)] { if (rs6000_emit_set_const (operands[0], operands[1])) DONE;