1 files changed, 62 insertions, 0 deletions
diff --git a/gcc/tree-nested.h b/gcc/tree-nested.h
index 4ee56f4..bdef416 100644
--- a/gcc/tree-nested.h
+++ b/gcc/tree-nested.h
@@ -24,4 +24,66 @@ extern tree build_addr (tree);
 extern void insert_field_into_struct (tree, tree);
 extern void lower_nested_functions (tree);
 
+class nested_function_info
+{
+public:
+  /* Constructor.  */
+  nested_function_info ()
+    : origin (NULL),
+      nested (NULL),
+      next_nested (NULL)
+  {
+  }
+  /* Copy constructor.  We can not simply copy the structure,
+     because the linked lists would go wrong.  However we should never
+     need that.  */
+  nested_function_info (const nested_function_info &)
+  {
+     gcc_unreachable ();
+  }
+  ~nested_function_info ();
+
+  /* Return nested_function_info, if available.  */
+  static nested_function_info *get (cgraph_node *node);
+
+  /* Return nested_function_info possibly creating new one.  */
+  static nested_function_info *get_create (cgraph_node *node);
+
+  /* Release all nested_function_infos.  */
+  static void release (void);
+
+  /* For nested functions points to function the node is nested in.  */
+  cgraph_node *origin;
+  /* Points to first nested function, if any.  */
+  cgraph_node *nested;
+  /* Pointer to the next function with same origin, if any.  */
+  cgraph_node *next_nested;
+};
+
+extern void maybe_record_nested_function (cgraph_node *node);
+extern void unnest_function (cgraph_node *node);
+
+/* If there are functions nested in NODE, return first one.  */
+inline cgraph_node *
+first_nested_function (cgraph_node *node)
+{
+  nested_function_info *info = nested_function_info::get (node);
+  return info ? info->nested : NULL;
+}
+
+/* Return next nested function (used to iterate from first_nested_function).  */
+inline cgraph_node *
+next_nested_function (cgraph_node *node)
+{
+  return nested_function_info::get (node)->next_nested;
+}
+
+/* Return origin of nested function (and NULL otherwise).  */
+inline cgraph_node *
+nested_function_origin (cgraph_node *node)
+{
+  nested_function_info *info = nested_function_info::get (node);
+  return info ? info->origin : NULL;
+}
+
 #endif /* GCC_TREE_NESTED_H */