Optimize after delays on broadcast connections and fix them for C #593
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Given a broadcast connection with N ports on the left an M ports on the right, we currently instantiate M delay reactors and broadcast to the delays. However, it would be more efficient to only instantiate N delay reactors and broadcast the output of the delays. This change implements this optimization and also adds a new testcase.
edwardalee
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Soroosh129
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cmnrd
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#553 fixed after delays on broadcast connections in C++, but did so quite inefficiently. Given a broadcast connection with N left ports and M right ports (N<=M), #553 would create M delay reactors and broadcast from the left ports to the delay instances. However, it would be much more efficient to only create N delay reactors and broadcast their output to the right ports. This optimization is implemented in this PR. The PR also includes test cases for C and C++.
Interestingly, this change also happens to fix #554. It looks like the C generator expected the broadcast to occur on the right side of the delay reactors. This is probably the reason why #553 did not fix the issue for C.