专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US6092188A Processor and instruction set with predict instructions 有权
标题翻译：具有预测指令的处理器和指令集
公开(公告)号：US6092188A
公开(公告)日：2000-07-18
申请号：US348406
申请日：1999-07-07
申请人： Michael P. Corwin , Tse-Yu Yeh , Mircea Poplingher , Carl C. Scafidi
发明人： Michael P. Corwin , Tse-Yu Yeh , Mircea Poplingher , Carl C. Scafidi
IPC分类号： G06F9/32 , G06F9/38 , G06F15/00
CPC分类号： G06F9/3804 , G06F9/322 , G06F9/3846
摘要： A processor architecture with an instruction set having a predict instruction, the predict instruction providing static prediction information and a statically predicted target address to the processor for a branch instruction. The processor decodes a predict instruction to obtain an associated pair of addresses comprising a predicted target address and a referenced instruction address, and fetches a predicted target instruction having an instruction address matching the predicted target address when a fetched and decoded branch instruction has an instruction address matching the referenced instruction address.
摘要翻译：一种具有指令集的处理器架构，具有预测指令，所述预测指令提供静态预测信息和静态预测的目标地址给处理器用于分支指令。处理器对预测指令进行解码以获得包括预测目标地址和参考指令地址的相关联的地址对，并且当获取和解码的分支指令具有指令地址时，获取具有与预测目标地址匹配的指令地址的预测目标指令匹配引用的指令地址。

2. 发明授权

US5805878A Method and apparatus for generating branch predictions for multiple branch instructions indexed by a single instruction pointer 失效
标题翻译：用于为由单个指令指针索引的多个分支指令生成分支预测的方法和装置
公开(公告)号：US5805878A
公开(公告)日：1998-09-08
申请号：US792115
申请日：1997-01-31
申请人： Monis Rahman , Tse-Yu Yeh , Mircea Poplingher , Carl C. Scafidi , Ashish Choubal
发明人： Monis Rahman , Tse-Yu Yeh , Mircea Poplingher , Carl C. Scafidi , Ashish Choubal
IPC分类号： G06F9/38 , G06F9/40
CPC分类号： G06F9/3806 , G06F9/3844 , G06F9/3846
摘要： A method and apparatus for generating respective branch predictions for first and second branch instructions, both indexed by a first instruction pointer, is disclosed. The apparatus includes dynamic branch prediction circuitry for generating a branch prediction based on the outcome of previous branch resolution activity, as well as static branch prediction circuitry configured to generate a branch prediction based on static branch prediction information. Prediction output circuitry, coupled to the both the dynamic and static branch prediction circuitry, outputs the respective branch predictions for the first and second branch instructions in first and second clock cycles to an instruction buffer (or "rotator"). Specifically, the prediction output control circuitry outputs the branch prediction for the second branch instruction in the second clock cycle and in response to the initiation of a recycle stall during the first clock cycle. The receipt of the predictions and their corresponding branch instructions at the instruction buffer is thus synchronized, and the opportunity of generating a prediction for the second branch instruction is not lost.
摘要翻译：公开了一种用于产生由第一指令指针索引的第一和第二分支指令的分支预测的方法和装置。该装置包括用于基于先前分支分辨率活动的结果生成分支预测的动态分支预测电路，以及被配置为基于静态分支预测信息生成分支预测的静态分支预测电路。耦合到动态和静态分支预测电路的预测输出电路将第一和第二时钟周期中的第一和第二分支指令的相应分支预测输出到指令缓冲器（或“转子”）。具体地，预测输出控制电路在第二时钟周期中输出第二分支指令的分支预测，并且响应于在第一时钟周期期间启动再循环停止。因此，在指令缓冲器处接收预测及其相应的分支指令是同步的，并且不会丢失产生第二分支指令的预测的机会。

3. 发明授权

US07441107B2 Utilizing an advanced load address table for memory disambiguation in an out of order processor 失效
标题翻译：利用高级加载地址表，在一个乱序处理器中消除内存消歧
公开(公告)号：US07441107B2
公开(公告)日：2008-10-21
申请号：US10750150
申请日：2003-12-31
申请人： Gary N. Hammond , Carl C. Scafidi
发明人： Gary N. Hammond , Carl C. Scafidi
IPC分类号： G06F9/00
CPC分类号： G06F9/383 , G06F9/3824 , G06F9/3826 , G06F9/3834 , G06F9/3842 , G06F9/3861
摘要： Embodiments include a system for minimizing storage space required for tracking load instructions through a pipeline in a processor. Store instructions are tracked in a separate queue and only load instructions that require speculation on data or addresses are tracked in a load table and flagged in the reorder buffer. This system improves system performance by reducing energy and space requirements.
摘要翻译：实施例包括用于最小化通过处理器中的流水线跟踪加载指令所需的存储空间的系统。存储指令在单独的队列中进行跟踪，并且仅加载需要对数据或地址进行推测的指令，并在加载表中跟踪并在重新排序缓冲区中标记。该系统通过减少能源和空间需求来提高系统性能。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式