An efficient approach to custom instruction set generation

Application-specific instruction set extension to the computational capabilities of a processor provides an efficient mechanism to meet the growing performance and time-to-market demands of embedded applications. In this paper, a new methodology for custom instruction set generation is proposed by using profiling technique to analyze CDFG (control and data flow graph) of C program. In the new methodology, we mainly consider major blocks of CDFG of the given application in order to speed up the whole process. It results that for the application, the major blocks fewer, and the process faster. Our approach will significantly reduce the time of the whole process while does not affect the benefit of results. The experimental results demonstrate the improvements over existing techniques.