PR #12539 Speed up caching of subtype checks

Speed up caching of subtype checks #12539

JukkaL merged 3 commits into master from faster-cached-subtype-check2

Speed up caching of subtype checks

f05e06ca

Move strict optional state to an instance attribute for faster access

84852797

Skip caching if last_known_value is set

1a5e8901

jhance approved these changes on 2022-04-07

JukkaL merged cddd819d into master 4 years ago

JukkaL deleted the faster-cached-subtype-check2 branch 4 years ago

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