Speed up make_simplified_union #14370
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If there is only one non-union item, there's nothing interesting to do. This is pretty common, and it avoids a fairly expensive `_remove_redundant_union_items` call.
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According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉 |
svalentin
approved these changes
Dec 29, 2022
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If there is only one non-union item, there's nothing interesting to do. This is pretty common, and it avoids a fairly expensive
_remove_redundant_union_itemscall.(Various small optimizations, including this, together netted a 6% performance improvement in self check.)