Use perf-boosting custom hash for ordering maps and tuples#15398
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gldubc wants to merge 2 commits into
Open
Use perf-boosting custom hash for ordering maps and tuples#15398gldubc wants to merge 2 commits into
gldubc wants to merge 2 commits into
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Map literals with a smaller hash get ordered higher in the BDD. If we use a negative hash for the
:closedmaps, then they will appear higher in BDDs and this will factor them (instead of having it multiplied on every leaf). We can also add a weight for the number of fields, so that more fields appear higher than less fields.The same can be done for tuples as well.
The performance boost appears when using plain bdd operations (e.g. Livebook typechecking goes from 750ms to the usual ~280ms).