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This paper describes an approach for adaptive dynamic instruction set extension, tuning processors to specific applications. These new instructions are generated after production. The processor has tw...o modes: training mode and normal mode. The application-specific instructions are extracted from the critical portions of the code detected by a profiler at training mode. At normal mode they are executed on a reconfigurable coarse grain accelerator. The sequencer decides when, which custom instruction should be executed. In this methodology there is no need to a new compiler and extra opcodes. Two methods are proposed for finding critical regions of the code.show more
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hamid05_2