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[pf3gnuchains/gcc-fork.git] / gcc / loop-init.c

diff --git a/gcc/loop-init.c b/gcc/loop-init.c
index 35fa12e..2eddb6d 100644 (file)
--- a/gcc/loop-init.c
+++ b/gcc/loop-init.c
@@ -1,5 +1,5 @@
 /* Loop optimizer initialization routines.
-   Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -24,6 +24,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #include "tm.h"
 #include "rtl.h"
 #include "hard-reg-set.h"
+#include "obstack.h"
 #include "basic-block.h"
 #include "cfgloop.h"
 #include "cfglayout.h"
@@ -35,6 +36,7 @@ loop_optimizer_init (FILE *dumpfile)
 {
   struct loops *loops = xcalloc (1, sizeof (struct loops));
   edge e;
+  edge_iterator ei;
   static bool first_time = true;
 
   if (first_time)
@@ -45,13 +47,16 @@ loop_optimizer_init (FILE *dumpfile)
 
   /* Avoid annoying special cases of edges going to exit
      block.  */
-  for (e = EXIT_BLOCK_PTR->pred; e; e = e->pred_next)
-    if ((e->flags & EDGE_FALLTHRU) && e->src->succ->succ_next)
+
+  for (ei = ei_start (EXIT_BLOCK_PTR->preds); (e = ei_safe_edge (ei)); )
+    if ((e->flags & EDGE_FALLTHRU) && !single_succ_p (e->src))
       split_edge (e);
+    else
+      ei_next (&ei);
 
   /* Find the loops.  */
 
-  if (flow_loops_find (loops, LOOP_TREE) <= 1)
+  if (flow_loops_find (loops) <= 1)
     {
       /* No loops.  */
       flow_loops_free (loops);