ir_node *carrier; /**< node representing the operand value (Proj or the node itself for defs, the used value for uses) */
be_operand_t *partner; /**< used in bechordal later... (TODO what does it do?) */
const bitset_t *regs; /**< admissible register bitset */
- int pos; /**< pos of the operand (0 to n are inputs, -1 to -n are outputs) */
const arch_register_req_t *req; /**< register constraints for the carrier node */
};