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* dfflegalize: Refactor, add aldff support.Marcelina Kościelnicka2021-10-271-4/+4
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* clk2fflogic: Support all FF types.Marcelina Kościelnicka2020-07-241-4/+4
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* dfflegalize: Add special support for const-D latches.Marcelina Kościelnicka2020-07-091-0/+53
Those can be created by `opt_dff` when optimizing `$adff` with const clock, or with D == Q. Make dfflegalize do the opposite transform when such dlatches would be otherwise unimplementable.