Synthesis using path-based scheduling

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Abstract
Path-based scheduling algorithms consider all possible sequences of operations (called paths) in a control-flow graph. Unlike most scheduling techniques used in high-level synthesis, they stress optimization across conditional branches. This paper presents several path-based algorithms. An exact algorithm finds the minimum number of control steps required for each possible path being executed. Heuristic solutions were also implemented. Extensive application of these algorithms to the benchmarks of the High-Level Synthesis Workshop showed the practical feasibility of such methods.

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