tree-cfg.c (print_loop): Avoid ICEing for loops marked for removal and loops with multiple latches.

2012-08-13  Richard Guenther  <rguenther@suse.de>

	* tree-cfg.c (print_loop): Avoid ICEing for loops marked for
	removal and loops with multiple latches.

From-SVN: r190344

gcc/ChangeLog

+2012-08-13  Richard Guenther  <rguenther@suse.de>
+
+	* tree-cfg.c (print_loop): Avoid ICEing for loops marked for
+	removal and loops with multiple latches.
+
 2012-08-13  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c/53968

gcc/tree-cfg.c

@@ -6870,8 +6870,18 @@ print_loop (FILE *file, struct loop *loop, int indent, int verbosity)
   s_indent[indent] = '\0';
 
   /* Print loop's header.  */
-  fprintf (file, "%sloop_%d (header = %d, latch = %d", s_indent,
-	   loop->num, loop->header->index, loop->latch->index);
+  fprintf (file, "%sloop_%d (", s_indent, loop->num);
+  if (loop->header)
+    fprintf (file, "header = %d", loop->header->index);
+  else
+    {
+      fprintf (file, "deleted)\n");
+      return;
+    }
+  if (loop->latch)
+    fprintf (file, ", latch = %d", loop->latch->index);
+  else
+    fprintf (file, ", multiple latches");
   fprintf (file, ", niter = ");
   print_generic_expr (file, loop->nb_iterations, 0);