Avoiding data conversions in embedded media processors

Complex application-specific media instructions and kernels are emulated with simple to implement extended subword instructions. We show that assuming extended register file entries to accommodate intermediate results and by implementing a few simple instructions, packing/unpacking, saturation, and frequently used complex instructions can be practically eliminated. It is shown that in most emulations there is a potential performance improvement, making the proposed scheme suitable for embedded processors with a limited hardware budget. Categories and Subject Descriptors

• Type: Conference
• Year: 2005
• Where: SAC
• Authors: Ben H. H. Juurlink, Asadollah Shahbahrami, Stamatis Vassiliadis
• Keywords: Application-specific Media Instructions, Applied Computing, Complex Instructions, Extended Subword Instructions, SAC 2005