Data alignment for sub-word parallelism in DSP

Abstract

Data alignment and code size expansion are two problems of sub-word parallel (SWP) computation. In this paper we propose a new solution to data alignment in a recently introduced SWP-extended digital signal processor, and present details of an application example. This data alignment technique offers a reduction in overhead compared to other solutions in the literature, in that it does not require aggressive loop unrolling and can be tightly scheduled in software.