/*
- * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
/* returns the number of successors of the node: */
int get_irn_n_outs(ir_node *node);
-/** Get predecessor n */
-ir_node *get_irn_out(ir_node *node, int pos);
+/** Get the User of a node from the Def-Use edge at position pos. */
+ir_node *get_irn_out(ir_node *def, int pos);
-/** Set predecessor n */
-void set_irn_out(ir_node *node, int pos, ir_node *out);
+/**
+ * Get the User and its input position from the Def-Use edge of def
+ * at position pos.
+ */
+ir_node *get_irn_out_ex(ir_node *def, int pos, int *in_pos);
+
+/**
+ * Set the User at position pos.
+ *
+ * @param def the Def node
+ * @param pos the number of the Def-Use edge tat is modified
+ * @param use the Use node
+ * @param in_pos the number of the corresponding Use-Def edge in the use node in array
+ */
+void set_irn_out(ir_node *def, int pos, ir_node *use, int in_pos);
/* Methods to iterate through the control flow graph. Iterate from 0 to
i < get_Block_cfg_outs(block). No order of successors guaranteed. */
irg_walk_func *pre, irg_walk_func *post,
void *env);
+/**
+ * returns 1 if outs have been computed for a node, 0 otherwise.
+ *
+ * this is usefull to detect newly created nodes that have no outs set yet
+ */
+int get_irn_outs_computed(const ir_node *node);
+
/*------------------------------------------------------------------*/
/* Building and Removing the out datastructure */
/*------------------------------------------------------------------*/
void assure_irg_outs(ir_graph *irg);
+#ifdef INTERPROCEDURAL_VIEW
/** Computes the out edges in interprocedural view */
void compute_ip_outs(void);
/** Frees the out datastructures. Sets the flag in irg to "outs_none". */
void free_ip_outs(void);
+#endif
+
void free_irg_outs(ir_graph *irg);
void free_irp_outs(void);