https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109983
--- Comment #1 from Sam James <sjames at gcc dot gnu.org> ---
I let perf spin for a while and got this w/ 13:
```
$ perf record gcc-13 -O2 -fipa-pta -c packet-rnsap.c.i
[^C'd after ~2 minutes]
$ perf report
43.18% cc1 cc1 [.] bitmap_ior_into
40.43% cc1 cc1 [.] bitmap_bit_p
9.65% cc1 cc1 [.] bitmap_set_bit
2.87% cc1 cc1 [.] solve_graph
0.98% cc1 cc1 [.] solution_set_expand
0.80% cc1 cc1 [.] add_graph_edge
0.39% cc1 cc1 [.] find
0.04% cc1 cc1 [.]
symbol_table::decl_assembler_name_hash
0.04% cc1 libc.so.6 [.] malloc
0.03% cc1 cc1 [.] ggc_set_mark
0.03% cc1 cc1 [.] verify_ssa
0.03% cc1 cc1 [.] gt_ggc_mx_lang_tree_node
0.03% cc1 cc1 [.] walk_gimple_op
0.03% cc1 cc1 [.] walk_tree_1
0.03% cc1 cc1 [.]
base_pool_allocator<memory_block_pool>::allocate
0.03% cc1 cc1 [.] solve_constraints
0.02% cc1 cc1 [.]
bitmap_list_insert_element_after
0.02% cc1 cc1 [.] verify_gimple_call
0.02% cc1 libc.so.6 [.] cfree
0.02% cc1 cc1 [.] ggc_internal_alloc
0.02% cc1 cc1 [.] verify_gimple_in_cfg
0.02% cc1 cc1 [.] equiv_class_lookup_or_add
0.02% cc1 cc1 [.] verify_gimple_stmt
0.02% cc1 [unknown] [k] 0xffffffff89000b90
0.02% cc1 cc1 [.] do_per_function
0.01% cc1 cc1 [.]
hash_table<default_hash_traits<tree_node*>, false, xcallocator>::verify
0.01% cc1 cc1 [.] contains_struct_check
0.01% cc1 cc1 [.]
hash_table<hash_map<nofree_string_hash, align_flags,
simple_hashmap_traits<default_hash_traits<nofree_string_hash>, align_flags>
>::hash_entry, false, xcallocator>::verify
0.01% cc1 cc1 [.] free_dominance_info
0.01% cc1 cc1 [.]
operands_scanner::get_expr_operands
0.01% cc1 cc1 [.] verify_expr_location_1
0.01% cc1 cc1 [.] _cpp_lex_direct
0.01% cc1 cc1 [.] verify_location
0.01% cc1 cc1 [.] (anonymous
namespace)::dom_info::calc_dfs_tree_nonrec
0.01% cc1 cc1 [.] (anonymous
namespace)::dom_info::calc_idoms
[...]
```
