MappingEvolve: LLM-Driven Code Evolution for Technology Mapping

• URL: http://arxiv.org/abs/2604.26591v1
• Date: Wed, 29 Apr 2026 12:17:48 GMT
• Title: MappingEvolve: LLM-Driven Code Evolution for Technology Mapping
• Abstract summary: We introduce MappingEvolve, an open-source framework that pioneers the use of Large Language Models to directly evolve technology mapping code.<n>Our method abstracts the mapping process into distinct optimization operators and employs a hierarchical agent-based architecture.<n>Experiments show our method significantly outperforms direct evolution and strong baselines.
• Score: 27.257835790783172
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Technology mapping is a critical yet challenging stage in logic synthesis. While Large Language Models (LLMs) have been applied to generate optimization scripts, their potential for core algorithm enhancement remains untapped. We introduce MappingEvolve, an open-source framework that pioneers the use of LLMs to directly evolve technology mapping code. Our method abstracts the mapping process into distinct optimization operators and employs a hierarchical agent-based architecture, comprising a Planner, Evolver, and Evaluator, to guide the evolutionary search. This structured approach enables strategic and effective code modifications. Experiments show our method significantly outperforms direct evolution and strong baselines, achieving 10.04\% area reduction versus ABC and 7.93\% versus mockturtle, with 46.6\%--96.0\% $S_{overall}$ improvement on EPFL benchmarks, while explicitly navigating the area--delay trade-off. Our code and data are available at https://github.com/Flians/MappingEvolve.

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