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LibJS: Add fast_is<T> helpers for all the primitive wrapper objects

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The JS runtime is full of checks for is<NumberObject> and friends.
They were showing up in a Speedometer profile as ~1% spent in
dynamic_cast, and this basically chops that down to nothing.
This commit is contained in:
Andreas Kling 2025-03-25 08:34:06 +00:00 • committed by Andreas Kling
commit c12f8b80dc
Notes: github-actions[bot] 2025-03-25 23:58:13 +00:00
7 changed files with 35 additions and 0 deletions
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5
Libraries/LibJS/Runtime/BooleanObject.h
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@ -25,7 +25,12 @@ protected:
BooleanObject(bool, Object& prototype);
private:
virtual bool is_boolean_object() const final { return true; }
bool m_value { false };
};
template<>
inline bool Object::fast_is<BooleanObject>() const { return is_boolean_object(); }
}