A floorplan-driven high-level synthesis algorithm with multiple-operation chainings based on path enumeration

As process technologies advance, interconnection delays are not negligible even in high-level synthesis and regular-distributed-register (RDR) architecture has been proposed to cope with this problem. In this paper, we propose a floorplan-driven high-level synthesis algorithm using multiple-operation chainings composed of two or more operations, and reduce the overall latency targeting RDR architecture. Our algorithm enumerates multiple-operation-chaining path candidates before performing scheduling/binding. Based on them, we find out optimal ones taking into account RDR floorplan information. Experimental results show that our algorithm successfully reduces the latency by up to 30.4% compared to the conventional approaches.