Instruction boundary prediction for variable length instruction set
    1.
    发明授权
    Instruction boundary prediction for variable length instruction set 有权
    可变长度指令集的指令边界预测

    公开(公告)号:US09223714B2

    公开(公告)日:2015-12-29

    申请号:US13836374

    申请日:2013-03-15

    Abstract: A system, processor, and method to predict with high accuracy and retain instruction boundaries for previously executed instructions in order to decode variable length instructions is disclosed. In at least one embodiment, a disclosed processor includes an instruction fetch unit, an instruction cache, a boundary byte predictor, and an instruction decoder. In some embodiments, the instruction fetch unit provides an instruction address and the instruction cache produces an instruction tag and instruction cache content corresponding to the instruction address. The instruction decoder, in some embodiments, includes boundary byte logic to determine an instruction boundary in the instruction cache content.

    Abstract translation: 公开了一种以高精度预测并保留先前执行的指令的指令边界以便解码可变长度指令的系统,处理器和方法。 在至少一个实施例中,所公开的处理器包括指令提取单元,指令高速缓存,边界字节预测器和指令解码器。 在一些实施例中,指令获取单元提供指令地址,并且指令高速缓冲存储器产生与指令地址对应的指令标签和指令高速缓存内容。 在一些实施例中,指令解码器包括用于确定指令高速缓存内容中的指令边界的边界字节逻辑。

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