https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102943
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
And just in case it helps, perf for ltrans36
Samples: 1M of event 'cycles', Event count (approx.): 2082526448741
Overhead Samples Command Shared Object Symbol
6.50% 118620 lto1-ltrans lto1 [.] bitmap_bit_p
#
5.46% 99073 lto1-ltrans lto1 [.] bitmap_and_into
#
5.04% 91631 lto1-ltrans lto1 [.]
bitmap_list_insert_element_after
#
4.65% 84591 lto1-ltrans lto1 [.] bitmap_ior_into
#
4.62% 84382 lto1-ltrans lto1 [.]
bitmap_get_aligned_chunk
#
4.24% 77368 lto1-ltrans lto1 [.] bitmap_set_bit
#
3.54% 64592 lto1-ltrans lto1 [.] df_count_refs
#
3.28% 59956 lto1-ltrans lto1 [.]
ranger_cache::add_to_update
#
2.88% 52329 lto1-ltrans lto1 [.] bitmap_and
#
2.15% 39376 lto1-ltrans lto1 [.] process_bb_lives
#
1.88% 34289 lto1-ltrans lto1 [.] bitmap_elt_ior
#
1.77% 32334 lto1-ltrans lto1 [.] update_pseudo_point
#
1.60% 29081 lto1-ltrans lto1 [.] bitmap_ior_and_compl
#
1.60% 29189 lto1-ltrans lto1 [.]
gimple_outgoing_range_stmt_p
#
1.58% 28678 lto1-ltrans lto1 [.]
pre_and_rev_post_order_compute_fn
#
1.51% 27683 lto1-ltrans lto1 [.]
get_immediate_dominator
#
1.40% 25392 lto1-ltrans lto1 [.]
bitmap_and_compl_into
#
1.27% 23132 lto1-ltrans lto1 [.]
ranger_cache::propagate_cache
#
1.26% 22904 lto1-ltrans lto1 [.] bitmap_intersect_p
#
1.19% 21655 lto1-ltrans lto1 [.] df_worklist_dataflow
#
1.12% 20432 lto1-ltrans lto1 [.] bitmap_copy
#
1.03% 18933 lto1-ltrans lto1 [.]
determine_value_range
#
0.88% 16151 lto1-ltrans lto1 [.] update_ssa
#
0.87% 15865 lto1-ltrans lto1 [.]
bitmap_set_aligned_chunk
#
0.77% 14157 lto1-ltrans lto1 [.]
rewrite_update_dom_walker::before_dom_children
