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Basic support for tag primitives and $future_ff #3903

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merged 8 commits into from
Sep 13, 2023

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@jix jix commented Aug 25, 2023

This is still missing bit-precise propagation models for shifts and arithmetic and
requires the design to be flattened.

This PR also contains an implementation of $future_ff for use in IVY.

@jix jix force-pushed the dft-future_ff branch 2 times, most recently from 2bb2629 to 90ffa48 Compare August 25, 2023 13:22
@jix jix changed the title Basic support for tag primitives Basic support for tag primitives and $future_ff Aug 29, 2023
mmicko and others added 8 commits September 13, 2023 11:32
This is still missing a mode to rewrite $overwrite_tag and $original_tag
by injecting $set_tag and $get_tag in the right places. It's also
missing bit-precise propagation models for shifts and arithmetic and
requires the design to be flattened.
This does not correctly handle an `$overwrite_tag` on a module output,
but since we currently require the user to flatten the design for
cross-module dft, this cannot be observed from within the design, only
by manually inspecting the signals in the design.
@mmicko mmicko merged commit d79b4b2 into YosysHQ:master Sep 13, 2023
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2 participants