2011-04-15 Tobias Burnus <burnus@net-b.de>

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

diff --git a/gcc/cfgloop.h b/gcc/cfgloop.h
index 1f0e3ca..0ff44de 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.
 
@@ -232,7 +232,8 @@ extern int num_loop_insns (const struct loop *);
 extern int average_num_loop_insns (const struct loop *);
 extern unsigned get_loop_level (const struct loop *);
 extern bool loop_exit_edge_p (const struct loop *, const_edge);
-extern bool is_loop_exit (struct loop *, basic_block);
+extern bool loop_exits_to_bb_p (struct loop *, basic_block);
+extern bool loop_exits_from_bb_p (struct loop *, basic_block);
 extern void mark_loop_exit_edges (void);
 
 /* Loops & cfg manipulation.  */
@@ -275,7 +276,7 @@ gcov_type expected_loop_iterations_unbounded (const struct loop *);
 extern unsigned expected_loop_iterations (const struct loop *);
 extern rtx doloop_condition_get (rtx);
 
-void estimate_numbers_of_iterations_loop (struct loop *);
+void estimate_numbers_of_iterations_loop (struct loop *, bool);
 HOST_WIDE_INT estimated_loop_iterations_int (struct loop *, bool);
 bool estimated_loop_iterations (struct loop *, bool, double_int *);
 
@@ -442,6 +443,14 @@ 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) *