Method and system for counting non-speculative events in a speculative processor
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United States of America Patent
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Aug 1, 2006
Grant Date -
N/A
app pub date -
May 13, 1999
filing date -
May 13, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and system for counting non-speculative events in a speculative processor is provided. The speculative processor contains a number of counters within a performance monitor for counting occurrences of specified events within a data processing system. An event to be monitored is specified. The specified event is monitored during the execution of instructions by the speculative processor. A count of occurrences of the specified event for all instructions executed by the speculative processor is generated, and a count of occurrences of the specified event for instructions completely executed by the speculative processor is generated. A difference between the count of occurrences of the specified event for all instructions and the count of occurrences of the specified event for all completed instructions may be generated as a count of occurrences of the specified event for instructions speculatively executed by the speculative processor.
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