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Thu, 1 Feb 2024 16:09:02 +0000 Message-ID: <487f5a41-1c7e-44f9-bfc3-bc196d6ae74f@arm.com> Date: Thu, 1 Feb 2024 16:09:01 +0000 User-Agent: Mozilla Thunderbird Content-Language: en-US To: "gcc-patches@gcc.gnu.org" , Richard Earnshaw , Richard Sandiford , rguenther@suse.de From: Richard Ball Subject: [PATCH v2] middle-end: Fix ICE in poly-int.h due to SLP. 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Ip=[63.35.35.123]; Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: DU6PEPF0000A7DF.eurprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM9PR08MB6084 X-Spam-Status: No, score=-11.8 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, FORGED_SPF_HELO, GIT_PATCH_0, KAM_DMARC_NONE, KAM_SHORT, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_PASS, SPF_NONE, TXREP, T_SCC_BODY_TEXT_LINE, UNPARSEABLE_RELAY 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: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces+incoming=patchwork.ozlabs.org@gcc.gnu.org Adds a check to ensure that the input vector arguments to a function are not variable length. Previously, only the output vector of a function was checked. The ICE in question is within the neon-sve-bridge.c test, and is related to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111268 gcc/ChangeLog: * tree-vect-slp.cc (vectorizable_slp_permutation_1): Add variable-length check for vector input arguments to a function. diff --git a/gcc/tree-vect-slp.cc b/gcc/tree-vect-slp.cc index 086377a9ac08528880c90bee3b1d1e08341a6288..7cf9504398c98cccfdba3b91c3e995f73f8b5d50 100644 --- a/gcc/tree-vect-slp.cc +++ b/gcc/tree-vect-slp.cc @@ -8987,7 +8987,8 @@ vectorizable_slp_permutation_1 (vec_info *vinfo, gimple_stmt_iterator *gsi, { /* Calculate every element of every permute mask vector explicitly, instead of relying on the pattern described above. */ - if (!nunits.is_constant (&npatterns)) + if (!nunits.is_constant (&npatterns) + || !TYPE_VECTOR_SUBPARTS (op_vectype).is_constant ()) return -1; nelts_per_pattern = ncopies = 1; if (loop_vec_info linfo = dyn_cast (vinfo))