[Libre-soc-bugs] [Bug 475] cxxsim improvements

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=475

--- Comment #12 from Cesar Strauss <cestrauss at gmail.com> ---
Found it!

https://github.com/nmigen/nmigen/issues/439#issuecomment-699641967

In a wild turn of events, the hang turned out to be triggered just by updating
an input wider than 32 bits, in the simulation process.

I guess we tended to use 32 bits or less in our own experiments, which resulted
a lack of coverage for wider signals.

This was only caught in higher-level tests, which used the full 64 bits of our
processor design.

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