/* ------------------------------------------------------------------- */
/** Returns true if the predesessor pos is a backedge. */
+int is_inter_backedge(ir_node *n, int pos);
+int is_intra_backedge(ir_node *n, int pos);
bool is_backedge (ir_node *n, int pos);
/** Remarks that edge pos is a backedge. */
void set_backedge (ir_node *n, int pos);