Restrict to set() of unique elements in build_optimized_tables
#627
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Description of the issue
Calls to
ufl.algorithms.sort_elementsshould be made with aset()to remove repeated entries from the elements list. This preventsufl.utils.sorting.topological_sortingfrom performing unnecessary work.Description of changes
This pull request updates
build_optimized_tableswith a call toset()to remove repeated entries from the elements list before callingsort_elements. This is consistent with the usage at https://github.com/FEniCS/ffcx/blob/main/ffcx/analysis.py#L99.