Prepare fixup for lazy deserialization#21170
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ilevkivskyi merged 5 commits intopython:masterfrom Apr 9, 2026
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JukkaL
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Apr 9, 2026
| self.kind, self._node, self.module_public, self.implicit, self.module_hidden | ||
| ) | ||
| new.cross_ref = self.cross_ref | ||
| new.unfixed = self.unfixed |
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Do we need to copy stored_info here?
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Good catch! I think that although it is a "short lived" attribute, for consistency we should.
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According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
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I am going to merge this now and will enable proper lazy deserialization after #21158 is merged as well. |
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Together with #21158, this gets us 95% there for lazy desrialization. Implementation is generally straightforward. At some point I wanted to unify the new global state with (parts of) the checker state, and potentially get rid of a bunch of
named_typecallbacks we pass around, but decided to do this later in a separate PR, since this is not strictly necessary for parallel checking.Although this PR itself only makes fixup phase (which is the smaller part of deserialization) lazy, it already shows small performance improvements:
torchwith 4 workerstorchcc @JukkaL