-/**
- * Check if an operand is a register operand.
- * @param env The environment.
- * @param irn The node.
- * @param pos The position of the operand.
- * @return 1, if the operand is significant for register allocation, 0
- * if not.
- */
-extern int arch_is_register_operand(const arch_env_t *env,
- const ir_node *irn, int pos);
-
-/**
- * Get the number of allocatable registers concerning
- * a register class for an operand of a node.
- * @param env The environment.
- * @param irn The node.
- * @param pos The position of the node's operand.
- * @param bs The bitset all allocatable registers shall be put into.
- * Note, that you can also pass NULL here. If you don't,
- * make sure, the bitset is as large as the register class
- * has registers.
- * @return The amount of registers allocatable for that operand.
- */
-extern int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn, int pos, bitset_t *bs);