give Bad nodes a mode

[libfirm] / include / libfirm / irloop.h

diff --git a/include/libfirm/irloop.h b/include/libfirm/irloop.h
index 5b91b2f..7c6db43 100644 (file)
--- a/include/libfirm/irloop.h
+++ b/include/libfirm/irloop.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
+ * Copyright (C) 1995-2011 University of Karlsruhe.  All right reserved.
  *
  * This file is part of libFirm.
  *
@@ -81,38 +81,40 @@ FIRM_API ir_loop *get_irn_loop(const ir_node *n);
 /** Returns outer loop, itself if outermost. */
 FIRM_API ir_loop *get_loop_outer_loop(const ir_loop *loop);
 /** Returns nesting depth of this loop */
-FIRM_API int get_loop_depth(const ir_loop *loop);
+FIRM_API unsigned get_loop_depth(const ir_loop *loop);
 
 /* Sons are the inner loops contained in this loop. */
 /** Returns the number of inner loops */
-FIRM_API int get_loop_n_sons(const ir_loop *loop);
+FIRM_API size_t get_loop_n_sons(const ir_loop *loop);
 
 /** Returns the pos`th son loop (inner loop) of a loop.
 Returns NULL if there is not a pos`th loop_node. */
-FIRM_API ir_loop *get_loop_son(ir_loop *loop, int pos);
+FIRM_API ir_loop *get_loop_son(ir_loop *loop, size_t pos);
 
 /** Returns the number of nodes contained in loop.  */
-FIRM_API int get_loop_n_nodes(const ir_loop *loop);
+FIRM_API size_t get_loop_n_nodes(const ir_loop *loop);
 
 /** Returns the pos`th ir_node of a loop.
 Returns NULL if there is not a pos`th ir_node. */
-FIRM_API ir_node *get_loop_node(const ir_loop *loop, int pos);
+FIRM_API ir_node *get_loop_node(const ir_loop *loop, size_t pos);
 
 /** Returns the number of elements contained in loop.  */
-FIRM_API int get_loop_n_elements(const ir_loop *loop);
+FIRM_API size_t get_loop_n_elements(const ir_loop *loop);
 
 /** Returns a loop element.  A loop element can be interpreted as a
 kind pointer, an ir_node* or an ir_loop*. */
-FIRM_API loop_element get_loop_element(const ir_loop *loop, int pos);
+FIRM_API loop_element get_loop_element(const ir_loop *loop, size_t pos);
+
+#define INVALID_LOOP_POS ((size_t)-1)
 
 /** Returns the element number of the loop son in loop.
-*  Returns -1 if not found. O(|elements|). */
-FIRM_API int get_loop_element_pos(const ir_loop *loop, void *le);
+*  Returns INVALID_LOOP_POS if not found. O(|elements|). */
+FIRM_API size_t get_loop_element_pos(const ir_loop *loop, void *le);
 
 /** Returns a unique node number for the loop node to make output
 readable. If libfirm_debug is not set it returns the loop cast to
 int. */
-FIRM_API int get_loop_loop_nr(const ir_loop *loop);
+FIRM_API long get_loop_loop_nr(const ir_loop *loop);
 
 /** A field to connect additional information to a loop. */
 FIRM_API void set_loop_link(ir_loop *loop, void *link);