https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105132
Bug ID: 105132 Summary: ICE in in operator[], at vec.h:889 with -march=skylake-avx512 -O3 Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: vsevolod.livinskiy at gmail dot com Target Milestone: --- Link to the Compiler Explorer: https://godbolt.org/z/xedcfP338 Reproducer: short a; extern int b[]; int c; void d(long f[][5][5][17], int g[][5][5][17]) { for (short e = 0; e < 17; e++) { a = g[19][2][3][e]; b[e] = c & (f[3][2][3][e] && g[19][2][3][e]); } } Error: >$ g++ -march=skylake-avx512 -c -O3 func.cpp during GIMPLE pass: slp func.cpp: In function 'void d(long int (*)[5][5][17], int (*)[5][5][17])': func.cpp:4:6: internal compiler error: in operator[], at vec.h:889 4 | void d(long f[][5][5][17], int g[][5][5][17]) { | ^ 0x99508e vec<edge_def*, va_gc, vl_embed>::operator[](unsigned int) /testing/gcc/gcc_src_master/gcc/vec.h:889 0x996d5b vec<tree_node*, va_heap, vl_embed>::operator[](unsigned int) /testing/gcc/gcc_src_master/gcc/tree-vect-stmts.cc:6108 0x996d5b vec<tree_node*, va_heap, vl_ptr>::operator[](unsigned int) /testing/gcc/gcc_src_master/gcc/vec.h:1495 0x996d5b vectorizable_operation /testing/gcc/gcc_src_master/gcc/tree-vect-stmts.cc:6375 0x2123ab8 vect_transform_stmt(vec_info*, _stmt_vec_info*, gimple_stmt_iterator*, _slp_tree*, _slp_instance*) /testing/gcc/gcc_src_master/gcc/tree-vect-stmts.cc:11245 0x14c4fc7 vect_schedule_slp_node /testing/gcc/gcc_src_master/gcc/tree-vect-slp.cc:7320 0x14d6346 vect_schedule_scc /testing/gcc/gcc_src_master/gcc/tree-vect-slp.cc:7515 0x14d60d9 vect_schedule_scc /testing/gcc/gcc_src_master/gcc/tree-vect-slp.cc:7496 0x14d60d9 vect_schedule_scc /testing/gcc/gcc_src_master/gcc/tree-vect-slp.cc:7496 0x14d60d9 vect_schedule_scc /testing/gcc/gcc_src_master/gcc/tree-vect-slp.cc:7496 0x14d699f vect_schedule_slp(vec_info*, vec<_slp_instance*, va_heap, vl_ptr> const&) /testing/gcc/gcc_src_master/gcc/tree-vect-slp.cc:7632 0x14d8163 vect_slp_region /testing/gcc/gcc_src_master/gcc/tree-vect-slp.cc:5994 0x14d9113 vect_slp_bbs /testing/gcc/gcc_src_master/gcc/tree-vect-slp.cc:6106 0x14d950c vect_slp_function(function*) /testing/gcc/gcc_src_master/gcc/tree-vect-slp.cc:6194 0x14e13e2 execute /testing/gcc/gcc_src_master/gcc/tree-vectorizer.cc:1506 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. GCC version: gcc version 12.0.1 20220401 (git://gcc.gnu.org/git/gcc.git:master 15d683d4f0b390b27c54a7c92c6e4f33195bdc93) (GCC)