Dead Dataflow Elimination type hints do not work with all types

[pratyai]

Graph: https://polybox.ethz.ch/index.php/s/5E0CXQPC7oYMVnc

Error in dace/transformation/passes/dead_dataflow_elimination.py:

AttributeError: type object 'numpy.float64' has no attribute 'to_string'. Did you mean: 'tostring'?

[tbennun]

I have seen this before with other types (dace.bool) too. It is a recent regression added by a "good first issue" PR we merged. There are two issues here:

1. the type should not be numpy.float64, but dace.float64 (and perhaps in a separate PR, adding numpy types to the type annotation hints is useful!)
2. We should instead use another way to turn the typeclass into a Python tasklet compatible string.

We should add two tests: numpy types and dace.bool/dace.bool_.

[tbennun]

I can confirm that this is resolved in #1725. You can retry your SDFG or code with that. It was type inference returning a numpy type instead of the expected return type of dtypes.typeclass. Thanks!