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Access speculation predictor with predictions based on memory region prior requestor tag information
Access speculation predictor with predictions based on memory region prior requestor tag information
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机译:具有基于存储区域在先请求者标签信息的预测的访问推测预测器
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摘要
An access speculation predictor may predict whether to perform speculative retrieval of data for a data request from a main memory based on whether or not a current requestor tag matches a previous requestor tag. In particular, a first address and a first requester tag may be extracted from a first data request and a finite state machine (FSM) of a memory controller may be selected whose memory region includes the first address. A second requester tag, that identifies a previous requester that attempted to access the memory region association with the selected FSM, may be retrieved from a register associated with the selected FSM and compared to the first requester tag. Speculatively retrieving the data for the first data request from a main memory may be controlled based on results of the comparison of the first requester tag to the second requester tag.
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