Compiler method of exploiting data value locality for computation reuse
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United States of America Patent
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Jun 7, 2016
Grant Date -
Sep 25, 2008
app pub date -
Mar 19, 2007
filing date -
Mar 19, 2007
priority date (Note) -
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Abstract
A compiler method for exploiting data value locality for computation reuse. When a code region having single entry and exit points and in which a potential computation reuse opportunity exists is identified during runtime, a helper thread is created separate from the master thread. One of the helper thread and master thread performs a computation specified in the code region, and the other of the helper thread and master thread looks up a value of the computation previously executed and stored in a lookup table. If the value of the computation previously executed is located in the lookup table, the other thread retrieves the value from the table, and ignores the computation performed by the thread. If the value of the computation is not located, the other thread obtains a result of the computation performed by the thread and stores the result in the lookup table for future computation reuse.
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