http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38474
--- Comment #71 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> 2012-08-28 14:54:54 UTC --- The -O3 compile is 3h later still running and needs >20Gb of RAM. The issue seems now to be variable_tracking_main #0 0x0000000000b7b8ce in dataflow_set_preserve_mem_locs(void**, void*) () #1 0x0000000000e76168 in htab_traverse_noresize () #2 0x0000000000b770e0 in dataflow_set_clear_at_call(dataflow_set_def*) () #3 0x0000000000b7c613 in vt_emit_notes() () #4 0x0000000000b847ea in variable_tracking_main() () #5 0x00000000008e8acf in execute_one_pass(opt_pass*) ()