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 3BA56383067D for ; Thu, 23 Jun 2022 02:02:24 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 3BA56383067D Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 25N1MH01022814; Thu, 23 Jun 2022 02:02:22 GMT Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3gvef1rt72-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 23 Jun 2022 02:02:22 +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 25N1piSl002919; Thu, 23 Jun 2022 02:02:21 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 3gvef1rt63-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 23 Jun 2022 02:02:21 +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 25N1Z33b021088; Thu, 23 Jun 2022 02:02:19 GMT Received: from b06cxnps3074.portsmouth.uk.ibm.com (d06relay09.portsmouth.uk.ibm.com [9.149.109.194]) by ppma05fra.de.ibm.com with ESMTP id 3gs6b952f5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 23 Jun 2022 02:02:19 +0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 25N22Gig18350510 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 23 Jun 2022 02:02:16 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5EBCAA405D; Thu, 23 Jun 2022 02:02:16 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CFB2CA4053; Thu, 23 Jun 2022 02:02:14 +0000 (GMT) Received: from [9.197.246.188] (unknown [9.197.246.188]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 23 Jun 2022 02:02:14 +0000 (GMT) Message-ID: <79282dcf-cca9-7ff3-aa25-e0d380e3b185@linux.ibm.com> Date: Thu, 23 Jun 2022 10:02:13 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.6.1 Subject: PING^2 [PATCH] rs6000: Handle unresolved overloaded builtin [PR105485] Content-Language: en-US To: GCC Patches Cc: Peter Bergner , Segher Boessenkool , David Edelsohn References: <340fcec1-eb5e-e0f6-e8d1-ea819d4fd165@linux.ibm.com> From: "Kewen.Lin" In-Reply-To: Content-Type: text/plain; charset=UTF-8 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: moxCd382CRr1-UjyDg0stFUb2tvLJ5Mg X-Proofpoint-ORIG-GUID: BgaYHDkQI_CQI3L6hl0lqF6zXe7kJUUy Content-Transfer-Encoding: 7bit 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=2022-06-22_10,2022-06-22_03,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 impostorscore=0 adultscore=0 malwarescore=0 bulkscore=0 mlxlogscore=999 priorityscore=1501 mlxscore=0 phishscore=0 clxscore=1015 spamscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2204290000 definitions=main-2206230005 X-Spam-Status: No, score=-11.9 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-List-Received-Date: Thu, 23 Jun 2022 02:02:26 -0000 Hi, Gentle ping https://gcc.gnu.org/pipermail/gcc-patches/2022-May/594699.html BR, Kewen > on 2022/5/13 13:29, Kewen.Lin via Gcc-patches wrote: >> Hi, >> >> PR105485 exposes that new builtin function framework doesn't handle >> unresolved overloaded builtin function well. With new builtin >> function support, we don't have builtin info for any overloaded >> rs6000_gen_builtins enum, since they are expected to be resolved to >> one specific instance. So when function rs6000_gimple_fold_builtin >> faces one unresolved overloaded builtin, the access for builtin info >> becomes out of bound and gets ICE then. >> >> We should not try to fold one unresolved overloaded builtin there >> and as the previous support we should emit one error message during >> expansion phase like "unresolved overload for builtin ...". >> >> Bootstrapped and regtested on powerpc64-linux-gnu P8 and >> powerpc64le-linux-gnu P9 and P10. >> >> Is it ok for trunk? >> >> BR, >> Kewen >> ----- >> PR target/105485 >> >> gcc/ChangeLog: >> >> * config/rs6000/rs6000-builtin.cc (rs6000_gimple_fold_builtin): Add >> the handling for unresolved overloaded builtin function. >> (rs6000_expand_builtin): Likewise. >> >> gcc/testsuite/ChangeLog: >> >> * g++.target/powerpc/pr105485.C: New test. >> >> --- >> gcc/config/rs6000/rs6000-builtin.cc | 13 +++++++++++++ >> gcc/testsuite/g++.target/powerpc/pr105485.C | 9 +++++++++ >> 2 files changed, 22 insertions(+) >> create mode 100644 gcc/testsuite/g++.target/powerpc/pr105485.C >> >> diff --git a/gcc/config/rs6000/rs6000-builtin.cc b/gcc/config/rs6000/rs6000-builtin.cc >> index e925ba9fad9..e102305c90c 100644 >> --- a/gcc/config/rs6000/rs6000-builtin.cc >> +++ b/gcc/config/rs6000/rs6000-builtin.cc >> @@ -1294,6 +1294,11 @@ rs6000_gimple_fold_builtin (gimple_stmt_iterator *gsi) >> enum tree_code bcode; >> gimple *g; >> >> + /* For an unresolved overloaded builtin, return early here since there >> + is no builtin info for it and we are unable to fold it. */ >> + if (fn_code > RS6000_OVLD_NONE) >> + return false; >> + >> size_t uns_fncode = (size_t) fn_code; >> enum insn_code icode = rs6000_builtin_info[uns_fncode].icode; >> const char *fn_name1 = rs6000_builtin_info[uns_fncode].bifname; >> @@ -3295,6 +3300,14 @@ rs6000_expand_builtin (tree exp, rtx target, rtx /* subtarget */, >> tree fndecl = TREE_OPERAND (CALL_EXPR_FN (exp), 0); >> enum rs6000_gen_builtins fcode >> = (enum rs6000_gen_builtins) DECL_MD_FUNCTION_CODE (fndecl); >> + >> + /* Emit error message if it's an unresolved overloaded builtin. */ >> + if (fcode > RS6000_OVLD_NONE) >> + { >> + error ("unresolved overload for builtin %qF", fndecl); >> + return const0_rtx; >> + } >> + >> size_t uns_fcode = (size_t)fcode; >> enum insn_code icode = rs6000_builtin_info[uns_fcode].icode; >> >> diff --git a/gcc/testsuite/g++.target/powerpc/pr105485.C b/gcc/testsuite/g++.target/powerpc/pr105485.C >> new file mode 100644 >> index 00000000000..a3b8290df8c >> --- /dev/null >> +++ b/gcc/testsuite/g++.target/powerpc/pr105485.C >> @@ -0,0 +1,9 @@ >> +/* It's to verify no ICE here, ignore error/warning messages since >> + they are not test points here. */ >> +/* { dg-excess-errors "pr105485" } */ >> + >> +template void __builtin_vec_vslv(); >> +typedef __attribute__((altivec(vector__))) char T; >> +T b (T c, T d) { >> + return __builtin_vec_vslv(c, d); >> +}