https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79577
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Loops in:
#0 0x0000000000a45e5f in init_expr (cant_move=true, needs_spec_check_p=false,
was_renamed=<optimized out>, was_substituted=<optimized out>,
target_available=1 '\001', history=..., orig_sched_cycle=0, spec_to_check_ds=0,
spec_done_ds=0, orig_bb_index=2, sched_times=0,
priority=2, use=10000, spec=0, vi=0x1f9d1f0, expr=0x1f2ff20) at
../../gcc/sel-sched-ir.c:1651
#1 copy_expr (to=0x1f2ff20, from=<optimized out>) at
../../gcc/sel-sched-ir.c:1682
#2 0x0000000000a4d21e in av_set_copy (set=<optimized out>) at
../../gcc/sel-sched-ir.c:2204
#3 0x0000000000a5b8dd in compute_av_set_on_boundaries (fence=0x1f2fcf0,
av_vliw_p=0x7fffffffd508, bnds=0x1f2fd58) at ../../gcc/sel-sched.c:5068
#4 fill_insns (scheduled_insns_tailpp=<synthetic pointer>, seqno=-1,
fence=0x1f2fcf0) at ../../gcc/sel-sched.c:5526
#5 schedule_on_fences (scheduled_insns_tailpp=<synthetic pointer>,
max_seqno=1, fences=0x1f2fce8) at ../../gcc/sel-sched.c:7355
#6 sel_sched_region_2 (orig_max_seqno=orig_max_seqno@entry=1) at
../../gcc/sel-sched.c:7493
#7 0x0000000000a5ef7a in sel_sched_region_1 () at ../../gcc/sel-sched.c:7535
#8 sel_sched_region (rgn=0) at ../../gcc/sel-sched.c:7636
#9 0x0000000000a5f962 in run_selective_scheduling () at
../../gcc/sel-sched.c:7712
#10 0x0000000000a3f706 in rest_of_handle_sched2 () at
../../gcc/sched-rgn.c:3722
#11 (anonymous namespace)::pass_sched2::execute (this=<optimized out>) at
../../gcc/sched-rgn.c:3866
#12 0x00000000009cb63e in execute_one_pass (pass=pass@entry=0x1dd8c60) at
../../gcc/passes.c:2465
#13 0x00000000009cbe48 in execute_pass_list_1 (pass=0x1dd8c60) at
../../gcc/passes.c:2554
#14 0x00000000009cbe5a in execute_pass_list_1 (pass=0x1dd8420) at
../../gcc/passes.c:2555
#15 0x00000000009cbe5a in execute_pass_list_1 (pass=0x1dd7200) at
../../gcc/passes.c:2555
#16 0x00000000009cbea5 in execute_pass_list (fn=<optimized out>,
pass=<optimized out>) at ../../gcc/passes.c:2565
#17 0x000000000075815d in cgraph_node::expand (this=0x7ffff69ba000) at
../../gcc/cgraphunit.c:2038
#18 0x0000000000759766 in expand_all_functions () at
../../gcc/cgraphunit.c:2174
#19 symbol_table::compile (this=this@entry=0x7ffff687a100) at
../../gcc/cgraphunit.c:2531
#20 0x000000000075b195 in symbol_table::compile (this=0x7ffff687a100) at
../../gcc/cgraphunit.c:2595
#21 symbol_table::finalize_compilation_unit (this=0x7ffff687a100) at
../../gcc/cgraphunit.c:2621
#22 0x0000000000a85eea in compile_file () at ../../gcc/toplev.c:492
#23 0x0000000000632747 in do_compile () at ../../gcc/toplev.c:1984
#24 toplev::main (this=this@entry=0x7fffffffd8c0, argc=<optimized out>,
argc@entry=22, argv=<optimized out>, argv@entry=0x7fffffffd9c8) at
../../gcc/toplev.c:2118
#25 0x0000000000634ad7 in main (argc=22, argv=0x7fffffffd9c8) at
../../gcc/main.c:39
