DRESC: a retargetable compiler for coarse-grained reconfigurable architectures

Abstract

Coarse-grained reconfigurable architectures have become increasingly important in recent years. Automatic design or compiling tools are essential to their success. In this paper, we present a retargetable compiler for a family of coarse-grained reconfigurable architectures. Several key issues are addressed. Program analysis and transformation prepare dataflow for scheduling. Architecture abstraction generates an internal graph representation from a concrete architecture description. A modulo scheduling algorithm is key to exploit parallelism and achieve high performance. The experimental results show up to 28.7 instructions per cycle (IPC) over tested kernels.