[Bug debug/109237] csmith: another timeout with -g -O3 this time since r12-156-g8d4c374c4419a875

["rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109237

--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> ---
Spread pretty evenly now.  Everything >= 5%

 tree CFG cleanup                   :   5.25 (  8%)   0.00 (  0%)   5.27 (  7%)
   89k (  0%)
 expand                             :   3.22 (  5%)   0.18 (  2%)   3.41 (  4%)
 2177M ( 31%)
 scheduling 2                       :   6.93 ( 10%)   1.37 ( 18%)   8.29 ( 11%)
  746M ( 11%)
 TOTAL                              :  69.08          7.60         76.70       
 6951M

and the profile is

Samples: 287K of event 'cycles:u', Event count (approx.): 376155371739          
Overhead       Samples  Command  Shared Object     Symbol                       
   3.02%          8226  cc1      cc1               [.] init_alias_analysis
   3.02%          8300  cc1      cc1               [.] df_note_compute
   2.65%          7299  cc1      cc1               [.]
contains_no_active_insn_p
   2.53%          7016  cc1      cc1               [.]
delete_trivially_dead_insns
   2.15%          6150  cc1      cc1               [.] get_ref_base_and_extent
   1.92%          5443  cc1      cc1               [.] ggc_set_mark
   1.58%          4291  cc1      cc1               [.] fast_dce
   1.58%          4348  cc1      cc1               [.]
gimple_purge_dead_eh_edges
   1.53%          4141  cc1      cc1               [.] delete_unmarked_insns
   1.52%          4146  cc1      cc1               [.] prescan_insns_for_dce
   1.40%          3841  cc1      cc1               [.] cleanup_control_flow_bb
   1.28%          3467  cc1      cc1               [.] rebuild_jump_labels_1
   1.16%          3176  cc1      cc1               [.] df_live_bb_local_compute
   1.13%          3114  cc1      cc1               [.] gimple_merge_blocks
   1.09%          2977  cc1      cc1               [.] df_lr_bb_local_compute
   1.05%          2962  cc1      cc1               [.] (anonymous
namespace)::pass_rtl_cprop::execute
   1.03%          2988  cc1      cc1               [.] for_each_inc_dec
   1.01%          3168  cc1      cc1               [.] walk_tree_1
   0.87%          2790  cc1      cc1               [.] ggc_internal_alloc