https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100660
Bug ID: 100660 Summary: [11/12 Regression] ICE in visit_assignment, at tree-ssa-ccp.c:2451 Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: gs...@t-online.de Target Milestone: --- Changed between 20210418 and 20210425. Testcase derived from gcc.target/i386/pr98911.c with modification s/return// : $ cat z1.c typedef char v16qi __attribute__ ((vector_size (16))); v16qi f5 (v16qi a, v16qi b) { __builtin_ia32_pcmpgtb128 (a, b); } $ gcc-12-20210516 -c z1.c -O2 during GIMPLE pass: ccp z1.c: In function 'f5': z1.c:7:1: internal compiler error: Segmentation fault 7 | } | ^ 0xb68d3f crash_signal ../../gcc/toplev.c:327 0xc4d033 visit_assignment ../../gcc/tree-ssa-ccp.c:2451 0xcd2003 ssa_propagation_engine::simulate_stmt(gimple*) ../../gcc/tree-ssa-propagate.c:230 0xcd227a ssa_propagation_engine::simulate_block(basic_block_def*) ../../gcc/tree-ssa-propagate.c:337 0xcd2782 ssa_propagation_engine::ssa_propagate() ../../gcc/tree-ssa-propagate.c:504 0xc454b7 do_ssa_ccp ../../gcc/tree-ssa-ccp.c:2574 0xc454b7 execute ../../gcc/tree-ssa-ccp.c:2618 --- during GIMPLE pass: lower z1.c: In function 'f5': z1.c:4:1: internal compiler error: Segmentation fault 4 | f5 (v16qi a, v16qi b) | ^~ 0xd46ddf crash_signal ../../gcc/toplev.c:327 0xd8b9a5 contains_struct_check(tree_node*, tree_node_structure_enum, char const*, int, char const*) ../../gcc/tree.h:3469 0xd8b9a5 verify_gimple_assign_ternary ../../gcc/tree-cfg.c:4191 0xd8b9a5 verify_gimple_assign ../../gcc/tree-cfg.c:4701 0xd8b9a5 verify_gimple_stmt ../../gcc/tree-cfg.c:4957 0xd8d5af verify_gimple_in_seq_2 ../../gcc/tree-cfg.c:5119 0xd91fa1 verify_gimple_in_seq(gimple*) ../../gcc/tree-cfg.c:5158 0xc4fdaa execute_function_todo ../../gcc/passes.c:2044 0xc50af2 execute_todo ../../gcc/passes.c:2096