PR c++/60046

[pf3gnuchains/gcc-fork.git] / gcc / cfgloop.h

diff --git a/gcc/cfgloop.h b/gcc/cfgloop.h
index bf2614e..7573ff4 100644 (file)
--- a/gcc/cfgloop.h
+++ b/gcc/cfgloop.h
@@ -1,6 +1,6 @@
 /* Natural loop functions
    Copyright (C) 1987, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-   2005, 2006, 2007, 2008, 2009  Free Software Foundation, Inc.
+   2005, 2006, 2007, 2008, 2009, 2010  Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -143,11 +143,13 @@ struct GTY ((chain_next ("%h.next"))) loop {
      computes and caches the computed information in this field.  */
   tree nb_iterations;
 
-  /* An integer guaranteed to bound the number of iterations of the loop
-     from above.  */
+  /* An integer guaranteed to be greater or equal to nb_iterations.  Only
+     valid if any_upper_bound is true.  */
   double_int nb_iterations_upper_bound;
 
-  /* An integer giving the expected number of iterations of the loop.  */
+  /* An integer giving an estimate on nb_iterations.  Unlike
+     nb_iterations_upper_bound, there is no guarantee that it is at least
+     nb_iterations.  */
   double_int nb_iterations_estimate;
 
   bool any_upper_bound;
@@ -278,7 +280,9 @@ extern rtx doloop_condition_get (rtx);
 
 void estimate_numbers_of_iterations_loop (struct loop *, bool);
 HOST_WIDE_INT estimated_loop_iterations_int (struct loop *, bool);
+HOST_WIDE_INT max_stmt_executions_int (struct loop *, bool);
 bool estimated_loop_iterations (struct loop *, bool, double_int *);
+bool max_stmt_executions (struct loop *, bool, double_int *);
 
 /* Loop manipulation.  */
 extern bool can_duplicate_loop_p (const struct loop *loop);
@@ -443,6 +447,14 @@ loop_outer (const struct loop *loop)
   return VEC_index (loop_p, loop->superloops, n - 1);
 }
 
+/* Returns true if LOOP has at least one exit edge.  */
+
+static inline bool
+loop_has_exit_edges (const struct loop *loop)
+{
+  return loop->exits->next->e != NULL;
+}
+
 /* Returns the list of loops in current_loops.  */
 
 static inline VEC (loop_p, gc) *
@@ -617,7 +629,7 @@ fel_init (loop_iterator *li, loop_p *loop, unsigned flags)
 
 #define FOR_EACH_LOOP_BREAK(LI) \
   { \
-    VEC_free (int, heap, (LI)->to_visit); \
+    VEC_free (int, heap, (LI).to_visit); \
     break; \
   }