+/** Adds opcode to the list of opcodes in irp. */
+void add_irp_opcode(ir_op *opcode);
+
+/** Removes opcode from the list of opcodes, deallocates it and
+ shrinks the list by one. */
+void remove_irp_opcode(ir_op *opcode);
+
+/** Returns the number of all opcodes in the irp. */
+int get_irp_n_opcodes(void);
+
+/** Returns the opcode at position pos in the irp. */
+ir_op *get_irp_opcode(int pos);
+
+