[PATCH] Allow reporting statistics when current_pass->id is -1

[Andrey Belevantsev <abel at ispras dot ru>]

Hello,

The statistics.c code crashes when trying to record an event during the 
pass which number is -1.  This doesn't allow reporting statistics for 
alias export when the event gets added rom pass_clean_state.  Fixed as 
follows (with assert that this would not happen again), bootstrapped and 
tested on x86-64, and it also works with alias export.  Ok for trunk?

Andrey


2009-06-03  Andrey Belevantsev  <abel@ispras.ru>
    * statistics.c (statistics_counter_event): Do not record event in pass
    dump if its number == -1.
    (curr_statistics_hash): Add assert that we never get passes with static
    number == -1.


Index: gcc/statistics.c
===================================================================
*** gcc/statistics.c    (revision 148120)
--- gcc/statistics.c    (working copy)
*************** hash_statistics_free (void *p)
*** 82,88 ****
  static htab_t
  curr_statistics_hash (void)
  {
!   unsigned idx = current_pass->static_pass_number;

    if (idx < nr_statistics_hashes
        && statistics_hashes[idx] != NULL)
--- 82,91 ----
  static htab_t
  curr_statistics_hash (void)
  {
!   unsigned idx;
!
!   gcc_assert (current_pass->static_pass_number >= 0);
!   idx = current_pass->static_pass_number;

    if (idx < nr_statistics_hashes
        && statistics_hashes[idx] != NULL)
*************** statistics_counter_event (struct functio
*** 294,302 ****
        || incr == 0)
      return;

!   counter = lookup_or_add_counter (curr_statistics_hash (), id, 0, false);
!   gcc_assert (!counter->histogram_p);
!   counter->count += incr;

    if (!statistics_dump_file
        || !(statistics_dump_flags & TDF_DETAILS))
--- 297,308 ----
        || incr == 0)
      return;

!   if (current_pass->static_pass_number != -1)
!     {
!       counter = lookup_or_add_counter (curr_statistics_hash (), id, 0, 
false);
!       gcc_assert (!counter->histogram_p);
!       counter->count += incr;
!     }

    if (!statistics_dump_file
        || !(statistics_dump_flags & TDF_DETAILS))