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Control system for conditional branch instruction

阅读:211发布:2022-01-28

专利汇可以提供Control system for conditional branch instruction专利检索,专利查询,专利分析的服务。并且PURPOSE:To realize a high-speed process of a conditional branch instruction for an information processor that performs a multiplex preprocess, by giving a prediction to the branch to be executed next based on the statistics of the branching and nonbranching frequencies of the conditional branch instruction that has been executed in the past. CONSTITUTION:The signal B is received at the D13a and D23b, and the actually branched frequency is held at the register R15a with the nonbranched frequency held at the register R25b respectively. Then a comparison is given to the contents between the registers R15a and R25b when the next conditional branch instruction emerges, and the signal P predicting whether a branch is given or not is delivered according to the result of comparison. The signal B is produced according to the fact that the branch has been given actually or not and regardless of the prediction mentioned above, and then the contents is renewed for the registers R15a and R25b each. When the prediction is carried out by the signal P for the conditional branch instruction, a prediction is possible in accordance with the way of application of the conditional branch instruction with the whole or a part of a program. Thus the erroneous prediction is reduced, at the same time realizing a high-speed process for a conditional branch instruction.,下面是Control system for conditional branch instruction专利的具体信息内容。

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