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Compiler Vectorization Techniques for a Disjoint SIMD Architecture

This paper presents compiler technology that targets a novel low-power Digital Signal Processor (DSP) architecture. The architecture is characterized by the exploitation of data and instruction level parallelism,and uses a large register file with dynamically composed vectors for data manipulation. We describe how an optimizing compiler can make use of the vector register file with its flexible addressing to efficiently support a range of data access patterns that are present in the digital processing application domain. We describe new
challenges presented by this novel DSP architecture,as well as new opportunities for aggressive yet low-overhead optimizations that it introduces. Experiments show that an optimizing compiler can target such an architecture efficiently to achieve performance that is comparable to the optimal hand-generated code for key benchmarks. The resulting compiler technology represents an advance of the state-of-the-art in the area of DSP compilation.

By: Dorit Naishlos, Marina Biberstein, Ayal Zaks

Published in: H-0146 in 2002


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