C++ Constructor Clean-up and Move semantics #51
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SSoelvsten
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Assuming 'sylvan_protect' has no effect on 'sylvan_false' or some 'invalid' value, then we can further improve performance by removing the 'sylvan_protect'
Nothing is really gained by doing so since Sylvan's protect and unprotect are on the variables, not by use of reference counting.
Similar to the Bdd class, we have to remember to protect the new 'sylvan_false' to not mess up anything when 'sylvan_unprotect' is called during the destructor.
This way, the code for dealing with protection is only taken care of in a single place. Furthermore, there are no code-duplications for the meaning of each operator. Finally, the assignment should use the new move-assignment
Again, nothing is really gained from doing so except more code.
…ators This way, the code for dealing with protection is only taken care of in a single place. Furthermore, there are no code-duplications for the meaning of each operator. Finally, the assignment should use the new move-assignment
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At ETAPS, you (Tom van Dijk) mentioned something about fixing the C++ constructors. I tried to take a look.
sylvan_falsecosts less? But, otherwise there is no difference.On the bright side, having done this I am confident I have refreshed my memory of using Sylvan enough to do the C++ ZDD interface, I promised.
Here are all of the changes. I personally would advocate for rebasing this branch to remove any of the commits with move-semantics; these changes are just code-duplication. The rest are possibly nice for maintainability.
I have tested this with test/test_cxx and by checking my benchmarks still compile and seem to work.