[utils] Add Arcilator and Verilator comparison utility #8809
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uenoku
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Aug 1, 2025
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LGTM, I feel the script is a bit too sensible to specific versions of tools, but I'm fine with it.
Add the `compare-arcs-vtor.py` utility script which takes a core dialect design, compiles it with Arcilator and Verilator to obtain two simulators, and then runs the simulators in lockstep on random inputs to verify that they produce the same output. This can be useful in combination with circt-reduce in order to isolate behavior mismatches between Arcilator and Verilator.
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Add the
compare-arcs-vtor.pyutility script which takes a core dialect design, compiles it with Arcilator and Verilator to obtain two simulators, and then runs the simulators in lockstep on random inputs to verify that they produce the same output.This can be useful in combination with circt-reduce in order to isolate behavior mismatches between Arcilator and Verilator.