https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95335
Bug ID: 95335 Summary: [11 Regression] ICE in vectorizable_scan_store at gcc/tree-vect-stmts.c:7164 since r11-615-gdc0c0196340f7ac5 Product: gcc Version: 11.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: marxin at gcc dot gnu.org CC: rguenth at gcc dot gnu.org Target Milestone: --- One more for Richi, it's reduced from blender: $ cat math.i float *a; float b; void fn1(float p1[][3]) { float c, d, e, f; f = a[1] * a[1] * d; b = a[1] * a[2] * d; p1[1][1] = f + c; p1[1][2] = b + e; } $ gcc -Ofast math.i -c -march=znver1 during GIMPLE pass: slp math.i: In function 'fn1': math.i:4:1: internal compiler error: in operator[], at vec.h:867 4 | fn1(float p1[][3]) { | ^~~ 0x75c330 vec<tree_node*, va_heap, vl_embed>::operator[](unsigned int) /home/marxin/Programming/gcc/gcc/vec.h:867 0x75c330 vec<tree_node*, va_heap, vl_ptr>::operator[](unsigned int) /home/marxin/Programming/gcc/gcc/vec.h:1433 0x760a50 vec<tree_node*, va_heap, vl_ptr>::operator[](unsigned int) /home/marxin/Programming/gcc/gcc/tree.h:3419 0x760a50 vectorizable_scan_store /home/marxin/Programming/gcc/gcc/tree-vect-stmts.c:7164 0x760a50 vectorizable_store /home/marxin/Programming/gcc/gcc/tree-vect-stmts.c:7773 0x10a91fe vect_transform_stmt(vec_info*, _stmt_vec_info*, gimple_stmt_iterator*, _slp_tree*, _slp_instance*) /home/marxin/Programming/gcc/gcc/tree-vect-stmts.c:11200 0x10d0448 vect_schedule_slp_instance /home/marxin/Programming/gcc/gcc/tree-vect-slp.c:4235 0x10d9482 vect_schedule_slp(vec_info*) /home/marxin/Programming/gcc/gcc/tree-vect-slp.c:4359 0x10dc47c vect_slp_bb_region /home/marxin/Programming/gcc/gcc/tree-vect-slp.c:3318 0x10dc47c vect_slp_bb(basic_block_def*) /home/marxin/Programming/gcc/gcc/tree-vect-slp.c:3441 0x10dde2f execute /home/marxin/Programming/gcc/gcc/tree-vectorizer.c:1320 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions.