| 摘要 |
Phantom entries of entries in a branch history are completely detected using a flag identifying a phantom and a flag detecting the misalignment between the address of an instruction and an address where a branch has been predicted, which are provided for a queue executing branch instruction and controlling a phantom, and if the entries are not needed, they are erased. If there is an instruction that branches control flow, a phantom entry is intentionally created and instruction pre-fetching is applied to the entry.
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