https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64928
--- Comment #27 from Richard Biener <rguenth at gcc dot gnu.org> ---
Btw, on trunk for the small testcase the main peak memory user is
Bitmaps Leak Peak
Times N searches Search iter Type
--------------------------------------------------------------------------------------------------------------------------------------------
...
tree-ssa-live.c:931 (new_tree_live_info) 4089900520: 42.6%4089900600
102257849: 11.3% 35539 42909 heap
tree-ssa-live.c:932 (new_tree_live_info) 4099840160: 42.7%4099840200
103153730: 11.4% 326917 98706 heap
--------------------------------------------------------------------------------------------------------------------------------------------
Total 9592285400
906070505
that's livein/liveout. SSA conflicts are probably similar but harder
to decipher from the stats:
tree-ssa-coalesce.c:586 (ssa_conflicts_add_one) 43056: 0.0% 198672
398160: 0.0% 19205 39415 heap
next top is
df-problems.c:4400 (df_md_alloc) 218129480: 2.3% 218146320
5654706: 0.6% 71264 127594 heap
df-problems.c:4401 (df_md_alloc) 218142960: 2.3% 218159920
5640467: 0.6% 71675 127395 heap
