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Yosys dfflibmap now maps flip flops with enable - demo #2573

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widlarizer
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This PR demonstrates functionality added in YosysHQ/yosys#4698. We expect a QoR improvement on sky130hd and sky130hs and no change on other PDKs

@maliberty
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I'm confused - you are updating the yosys submodule which points to our fork but somehow getting upstream changes? I'm confused as to what is happening to make that possible.

@widlarizer
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I suspect that this is an effect of fork networks: "Commits to any repository in a network can be accessed from any repository in the same network, including the upstream repository, even after a fork is deleted." - About permissions and visibility of forks

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