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LibJS: Shrink Identifier's environment coordinate cache
This patch does two things: - We now use u32 instead of size_t for the hops and index fields in EnvironmentCoordinate. This means we're limited to an environment nesting level and variable count of 4Gs respectively. - Instead of wrapping it in an Optional, EnvironmentCoordinate now has a custom valid/invalid state using a magic marker value. These two changes reduce the size of Identifier by 16 bytes. :^)
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4 changed files with 16 additions and 10 deletions
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@ -1222,7 +1222,7 @@ private:
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virtual bool is_identifier() const override { return true; }
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FlyString m_string;
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mutable Optional<EnvironmentCoordinate> m_cached_environment_coordinate;
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mutable EnvironmentCoordinate m_cached_environment_coordinate;
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};
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class PrivateIdentifier final : public Expression {
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