会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Method for compacting an instruction queue
    • 压缩指令队列的方法
    • US06704856B1
    • 2004-03-09
    • US09465175
    • 1999-12-17
    • James A. FarrellTimothy C. FischerDaniel L. LeibholzBruce A. Gieseke
    • James A. FarrellTimothy C. FischerDaniel L. LeibholzBruce A. Gieseke
    • G06F930
    • G06F9/3802G06F9/3836G06F9/3838G06F9/384G06F9/3857
    • A method of compacting an instruction queue in an out of order processor includes determining the number of invalid instructions below and including each row in the queue, by counting invalid bits or validity indicators associated with rows below and up to the current row. For each row, multiplexor select signals are generated from the flat vector counts for the N rows above and including the present row, and from the validity indicators associated with the N rows, where N is a predetermined value. A multiplexor associated with a particular row selects one of the N rows according to the select value, and moves or passes the instruction held in the selected row to the present row. A row's select value is determined by forming a diagonal from the N count vectors corresponding to the N rows above and including the present row, and logically ANDing, each diagonal bit with the valid bit associated with the same row. Each row's count vector is determined in two stages. In the first stage, a local count is determined for each row in a local group of rows, and a global count is determined for the entire local group. Each local count is determined by counting the validity indicators associated with rows in the local group. In the second stage, a final count is determined for each row in the queue, by combining the local and global counts generated for the local group in the first stage, with global counts generated in local groups below the local group. The N rows can extend to the queue's input pipeline.
    • 压缩无序处理器中的指令队列的方法包括通过计数与当前行下方的行相关联的无效位或有效性指示符,来确定队列中每行的无效指令的数量,并且包括每行。 对于每一行,多路复用器选择信号从针对当前行上方并包括当前行的N行的平坦向量计数以及与N行相关联的有效指示符生成,其中N是预定值。 与特定行相关联的多路复用器根据选择值选择N行之一,并将所选行中保存的指令移动或传递到当前行。 通过从对应于上述N行并包括当前行的N个计数向量形成对角线来确定行的选择值,并且将每个对角位与逻辑与运算相关联的有效位进行逻辑与运算。 每行的计数向量分两个阶段确定。 在第一阶段,为本地行行中的每一行确定本地计数,并为整个本地组确定全局计数。 每个本地计数通过对与本地组中的行相关联的有效性指示进行计数来确定。 在第二阶段,通过组合在第一阶段为本地组生成的本地和全局计数以及本地组下的本地组中生成的全局计数,确定队列中每一行的最终计数。 N行可以扩​​展到队列的输入管道。
    • 3. 发明授权
    • Instruction dependency scoreboard with a hierarchical structure
    • 具有层次结构的指令依赖记分板
    • US06662293B1
    • 2003-12-09
    • US09577219
    • 2000-05-23
    • Richard H. LarsonSanjay PatelPoonacha P. KongetiraDaniel L. Leibholz
    • Richard H. LarsonSanjay PatelPoonacha P. KongetiraDaniel L. Leibholz
    • G06F1500
    • G06F9/3838G06F9/3836G06F9/384G06F9/3857
    • One embodiment of the present invention provides a system that selects instructions to be executed in a computer system that supports out-of-order execution of program instructions. The system receives dependency information for a first instruction. This dependency information identifies preceding instructions in the execution stream of a program that need to complete before the first instruction can be executed. The system divides this dependency information into a recent set and a less recent set. The recent set includes dependency information for a block of instructions immediately preceding the first instruction that need to complete before the first instruction can be executed. The less recent set includes dependency information for instructions not in the block of instructions immediately preceding the first instruction that need to complete before the first instruction can be executed. The system stores the recent set of dependency information in a first store, and stores the less recent set of dependency information in a second store. The first store is smaller and faster than the second store so that an update to dependency information takes less time to propagate through the first store than the second store. In one embodiment of the present invention, the system receives the dependency information for the first instruction from the first store and the second store, and determines from the dependency information if the first instruction is available to be executed by determining whether all preceding dependencies related to the first instruction have been satisfied. In one embodiment of the present invention, the system selects a second instruction from instructions that are available to be executed, and executes the second instruction.
    • 本发明的一个实施例提供了一种选择要在支持程序指令的无序执行的计算机系统中执行的指令的系统。 系统接收第一条指令的依赖信息。 该依赖性信息识别在可以执行第一指令之前需要完成的程序的执行流中的先前指令。 该系统将此依赖关系信息划分为最近设置和不太近的集合。 最近设置包括在第一指令之前紧接在第一指令之前的指令块的依赖信息,该指令需要在第一指令可执行之前完成。 不太近的集合包括不在紧接在第一指令之前的指令块中的指令的依赖信息,该指令需要在执行第一指令之前完成。 该系统将最新的一组依赖性信息存储在第一个存储中,并将较不新近的一组依赖关系信息存储在第二个存储中。 第一个商店比第二个商店更小和更快,因此对依赖关系信息的更新在第一个商店中传播的时间比第二个商店更少。 在本发明的一个实施例中,系统从第一存储和第二存储器接收第一指令的依赖性信息,并且从依赖信息确定第一指令是否可用于执行,通过确定是否所有先前的依赖关系与 第一条指示已经满足。 在本发明的一个实施例中,系统从可用于执行的指令中选择第二指令,并执行第二指令。