Further speed up union simplification #12541
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According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉 |
jhance
approved these changes
Apr 7, 2022
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This tweaks a change made in #12539 that may have slowed things
down. The behavior introduced in the PR was more correct, but it's not
worth a potential major performance regression, since union
simplification is not something we have to get always right for
correctness.
Work on #12526.