Branch prediction apparatus having branch target buffer for effectively processing branch instruction

摘要

To provide a branch prediction apparatus and its method that accesses BTB using IP of an instruction whose interval between the branch instruction is the smallest, on the basis of a branch instruction's fetch among the instructions that can be fetched prior to one cycle, and also that fetches the branch target after N cycle, after BTB accessing, storing the information of the cycle interval N1 between the branch access instruction and branch instruction inside BTB entry.