re PR tree-optimization/33649 (cc1 segfaults when multiple tree opts disabled)

	PR 33649
	* tree-ssa-pre.c (compute_antic): Correct loop bounds.

From-SVN: r143014

gcc/ChangeLog

+2009-01-02  Mark Mitchell  <mark@codesourcery.com>
+
+	PR 33649
+	* tree-ssa-pre.c (compute_antic): Correct loop bounds.
+
 2009-01-02  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/38690

gcc/tree-ssa-pre.c

@@ -2394,7 +2394,7 @@ compute_antic (void)
 	fprintf (dump_file, "Starting iteration %d\n", num_iterations);
       num_iterations++;
       changed = false;
-      for (i = 0; i < last_basic_block - NUM_FIXED_BLOCKS; i++)
+      for (i = 0; i < n_basic_blocks - NUM_FIXED_BLOCKS; i++)
 	{
 	  if (TEST_BIT (changed_blocks, postorder[i]))
 	    {
@@ -2425,7 +2425,7 @@ compute_antic (void)
 	    fprintf (dump_file, "Starting iteration %d\n", num_iterations);
 	  num_iterations++;
 	  changed = false;
-	  for (i = 0; i < last_basic_block - NUM_FIXED_BLOCKS; i++)
+	  for (i = 0; i < n_basic_blocks - NUM_FIXED_BLOCKS; i++)
 	    {
 	      if (TEST_BIT (changed_blocks, postorder[i]))
 		{