Apparatus for replacing data availability information for an instruction subsequent to a branch with previous availability information upon branch prediction failure

摘要

An information processing apparatus includes a data control circuit, an information holding register, and a selector. The data control circuit has control information corresponding to instructions which can be simultaneously executed, and performs control, even if a result of a preceding instruction is not stored in a general register, so as to execute a subsequent instruction to update the same general register. The information holding register holds data determination information based on an instruction preceding a branch instruction immediately before the branch instruction is executed. The selector replaces data determination information, for an instruction which is not executed when a branch is taken, with data determination information held by the information holding register.