http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44440
Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2011.01.12 14:40:30
Summary|ira_initialization and |[4.6 regression]
|buitins construction taking |ira_initialization and
|too much of startup time |buitins construction taking
| |too much of startup time
Ever Confirmed|0 |1
--- Comment #2 from Jan Hubicka <hubicka at gcc dot gnu.org> 2011-01-12
14:40:30 UTC ---
compiling empty file 100 times takes 3.8s on 4.6, while it takes 2.4s on on gcc
4.3 as well as gcc 4.5.
This is 50% regression. User time increases 100%. So we probably do a lot more
initialization than before.
2979 9.4936 ggc_internal_alloc_stat
1771 5.6439 ira_init
1539 4.9046 pop_scope
1258 4.0091 init_reg_sets_1
1036 3.3016 ht_lookup_with_hash
986 3.1422 ht_lookup
951 3.0307 decl_attributes
905 2.8841 ix86_hard_regno_mode_ok
852 2.7152 copy_node_stat
750 2.3901 rtx_cost
717 2.2850 bind
635 2.0236 ix86_rtx_costs
633 2.0173 ggc_internal_cleared_alloc_stat
632 2.0141 ix86_memory_move_cost
619 1.9727 c_write_global_declarations_1
566 1.8038 make_node_stat
553 1.7623 htab_find_with_hash
519 1.6540 recog
497 1.5839 iterative_hash
