Virtual 3-way decoupled prediction and fetch
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United States of America Patent
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Sep 19, 2023
Grant Date -
N/A
app pub date -
Jun 23, 2020
filing date -
Jun 23, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
A unified queue configured to perform decoupled prediction and fetch operations, and related apparatuses, systems, methods, and computer-readable media, is disclosed. The unified queue has a plurality of entries, where each entry is configured to store information associated with at least one instruction, and where the information comprises an identifier portion, a prediction information portion, and a tag information portion. The unified queue is configured to update the prediction information portion of each entry responsive to a prediction block, and to update the tag information portion of each entry responsive to a tag and TLB block. The prediction information may be updated more than once, and the unified queue is configured to take corrective action where a later prediction conflicts with an earlier prediction.
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