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 17F1238708F5; Wed, 7 Dec 2022 06:44:56 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 17F1238708F5 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 (m0127361.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2B76cALn019097; Wed, 7 Dec 2022 06:44:55 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=date : from : to : cc : subject : message-id : references : mime-version : content-type : in-reply-to; s=pp1; bh=4P7YZI76YxrjS+Rq1WVbd2pqv49HJnNTIAB+rL8h1fw=; b=DEW842Q+taAHnN4egCfFJ1adlPiszsdDaM1iEjjI4aiuJ6/GP65TEEOvJ5UIpmfzjizd tlllLBYXpq037s7vX5bMotZTARgiYy8S4kXD9LWbjp+j7yGRtaUz8KQGP7i0iSj4H6xe ZiLA2K0HuoGQivcJaTbKptxHm0kHBhFlZe+GAai3cpFBDpcJmEd20Yt/llJ2AIPt5/HE 78hXdMduunp5RFHzhPM7fK3b1qspF5m6u7y8VAn11bmGVTmGqZJy7wsajOuHeC1k7UNA Rk+YZkYoZHFWnr4LEmdd6+9KhkwulKsYqEI2HtblRitvJ8HFfTQq/VnV2octnFnFAJ5n HQ== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3manqy8411-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 07 Dec 2022 06:44:55 +0000 Received: from m0127361.ppops.net (m0127361.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 2B76ej9S025588; Wed, 7 Dec 2022 06:44:54 GMT Received: from ppma01dal.us.ibm.com (83.d6.3fa9.ip4.static.sl-reverse.com [169.63.214.131]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3manqy840u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 07 Dec 2022 06:44:54 +0000 Received: from pps.filterd (ppma01dal.us.ibm.com [127.0.0.1]) by ppma01dal.us.ibm.com (8.17.1.19/8.16.1.2) with ESMTP id 2B76WA6T023447; Wed, 7 Dec 2022 06:44:54 GMT Received: from smtprelay07.wdc07v.mail.ibm.com ([9.208.129.116]) by ppma01dal.us.ibm.com (PPS) with ESMTPS id 3m9pd9v40m-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 07 Dec 2022 06:44:54 +0000 Received: from smtpav06.wdc07v.mail.ibm.com (smtpav06.wdc07v.mail.ibm.com [10.39.53.233]) by smtprelay07.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 2B76iqgW5374558 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 7 Dec 2022 06:44:52 GMT Received: from smtpav06.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2E0AC5803F; Wed, 7 Dec 2022 06:44:52 +0000 (GMT) Received: from smtpav06.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 513665804E; Wed, 7 Dec 2022 06:44:51 +0000 (GMT) Received: from toto.the-meissners.org (unknown [9.160.42.232]) by smtpav06.wdc07v.mail.ibm.com (Postfix) with ESMTPS; Wed, 7 Dec 2022 06:44:51 +0000 (GMT) Date: Wed, 7 Dec 2022 01:44:49 -0500 From: Michael Meissner To: "Kewen.Lin" Cc: Michael Meissner , gcc-patches@gcc.gnu.org, Segher Boessenkool , David Edelsohn , Peter Bergner , Will Schmidt , William Seurer Subject: Re: [PATCH 1/3] Rework 128-bit complex multiply and divide, PR target/107299 Message-ID: Mail-Followup-To: Michael Meissner , "Kewen.Lin" , gcc-patches@gcc.gnu.org, Segher Boessenkool , David Edelsohn , Peter Bergner , Will Schmidt , William Seurer References: <997752a6-8cd4-abc5-d6e3-2e75eaa37d57@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <997752a6-8cd4-abc5-d6e3-2e75eaa37d57@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: Y7aAj9zoDPAPM-rbpO7AipYW5JHwu5nm X-Proofpoint-GUID: ZzovVM4cwzfDHFG65-Soyh16CxyB-Gpn X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-12-07_03,2022-12-06_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 mlxscore=0 spamscore=0 clxscore=1015 malwarescore=0 phishscore=0 priorityscore=1501 lowpriorityscore=0 mlxlogscore=636 adultscore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2212070052 X-Spam-Status: No, score=-3.4 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,KAM_NUMSUBJECT,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On Tue, Dec 06, 2022 at 05:36:54PM +0800, Kewen.Lin wrote: > Hi Mike, > > Thanks for fixing this! > > Could you help to elaborate why we need to disable it during libgcc building? When you are building libgcc, you are building the __mulkc3, __divkc3 functions. The mapping in the compiler interferes with those functions, because at the moment, libgcc uses an alternate IEEE 128-bit type. I have a patch for making libgcc use the 'right' type that I haven't submitted yet. This is because the more general fix that these 3 patches do impacts other functions (due to __float128 and _Float128 being different in the current compiler when -mabi=ieeelongdouble). -- Michael Meissner, IBM PO Box 98, Ayer, Massachusetts, USA, 01432 email: meissner@linux.ibm.com