* basic-block.h: Document BB_* flags.

[pf3gnuchains/gcc-fork.git] / gcc / sched-rgn.c

diff --git a/gcc/sched-rgn.c b/gcc/sched-rgn.c
index 2aba7f3..3fae790 100644 (file)
--- a/gcc/sched-rgn.c
+++ b/gcc/sched-rgn.c
@@ -997,6 +997,7 @@ compute_trg_info (int trg)
   edgelst el;
   int i, j, k, update_idx;
   basic_block block;
+  sbitmap visited;
   edge_iterator ei;
   edge e;
 
@@ -1006,6 +1007,8 @@ compute_trg_info (int trg)
   sp->is_speculative = 0;
   sp->src_prob = 100;
 
+  visited = sbitmap_alloc (last_basic_block - (INVALID_BLOCK + 1));
+
   for (i = trg + 1; i < current_nr_blocks; i++)
     {
       sp = candidate_table + i;
@@ -1043,12 +1046,14 @@ compute_trg_info (int trg)
             overrunning the end of the bblst_table.  */
 
          update_idx = 0;
+         sbitmap_zero (visited);
          for (j = 0; j < el.nr_members; j++)
            {
              block = el.first_member[j]->src;
              FOR_EACH_EDGE (e, ei, block->succs)
                {
-                 if (!(e->dest->flags & BB_VISITED))
+                 if (!TEST_BIT (visited,
+                                e->dest->index - (INVALID_BLOCK + 1)))
                    {
                      for (k = 0; k < el.nr_members; k++)
                        if (e == el.first_member[k])
@@ -1057,7 +1062,8 @@ compute_trg_info (int trg)
                      if (k >= el.nr_members)
                        {
                          bblst_table[bblst_last++] = e->dest;
-                         e->dest->flags |= BB_VISITED;
+                         SET_BIT (visited,
+                                  e->dest->index - (INVALID_BLOCK + 1));
                          update_idx++;
                        }
                    }
@@ -1065,9 +1071,6 @@ compute_trg_info (int trg)
            }
          sp->update_bbs.nr_members = update_idx;
 
-         FOR_ALL_BB (block)
-           block->flags &= ~BB_VISITED;
-
          /* Make sure we didn't overrun the end of bblst_table.  */
          gcc_assert (bblst_last <= bblst_size);
        }
@@ -1079,6 +1082,8 @@ compute_trg_info (int trg)
          sp->src_prob = 0;
        }
     }
+
+  sbitmap_free (visited);
 }
 
 /* Print candidates info, for debugging purposes.  Callable from debugger.  */