Dynamic thread sharing in branch prediction structures
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United States of America Patent
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Feb 7, 2017
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app pub date -
Mar 19, 2014
filing date -
Mar 19, 2014
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Abstract
Embodiments relate to multithreaded branch prediction. An aspect includes a system for dynamically evaluating how to share entries of a multithreaded branch prediction structure. The system includes a first-level branch target buffer coupled to a processor circuit. The processor circuit is configured to perform a method. The method includes receiving a search request to locate branch prediction information associated with the search request, and searching for an entry corresponding to the search request in the first-level branch prediction structure. The entry is not allowed based on a thread state of the entry indicating that the entry has caused a problem on a thread associated with the thread state.
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