* function.h (struct function): Remove calls_longjmp.

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

diff --git a/gcc/loop-init.c b/gcc/loop-init.c
index 19d53e1..5aa0db1 100644 (file)
--- a/gcc/loop-init.c
+++ b/gcc/loop-init.c
@@ -1,5 +1,5 @@
 /* Loop optimizer initialization routines.
-   Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 2004 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"
@@ -35,12 +36,23 @@ 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)
+    {
+      first_time = false;
+      init_set_costs ();
+    }
 
   /* 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) && EDGE_COUNT (e->src->succs) > 1)
       split_edge (e);
+    else
+      ei_next (&ei);
 
   /* Find the loops.  */
 
@@ -48,7 +60,6 @@ loop_optimizer_init (FILE *dumpfile)
     {
       /* No loops.  */
       flow_loops_free (loops);
-      free_dominance_info (CDI_DOMINATORS);
       free (loops);
 
       return NULL;
@@ -98,7 +109,6 @@ loop_optimizer_finalize (struct loops *loops, FILE *dumpfile)
 
   /* Clean up.  */
   flow_loops_free (loops);
-  free_dominance_info (CDI_DOMINATORS);
   free (loops);
 
   /* Checking.  */