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LibJS: Add fast_is<T> for StringObject and GlobalObject

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Both of these are quite hot in profiles.
This commit is contained in:
Andreas Kling 2021-03-19 11:28:44 +01:00
parent 43f0c92bcd
commit 0a911178ce
3 changed files with 14 additions and 0 deletions
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5
Userland/Libraries/LibJS/Runtime/GlobalObject.h
View file

@ -76,6 +76,8 @@ protected:
void add_constructor(const FlyString& property_name, ConstructorType*&, Object* prototype);
private:
virtual bool is_global_object() const final { return true; }
JS_DECLARE_NATIVE_FUNCTION(gc);
JS_DECLARE_NATIVE_FUNCTION(is_nan);
JS_DECLARE_NATIVE_FUNCTION(is_finite);
@ -131,4 +133,7 @@ inline GlobalObject* Shape::global_object() const
return static_cast<GlobalObject*>(m_global_object);
}
template<>
inline bool Object::fast_is<GlobalObject>() const { return is_global_object(); }
}

5
Userland/Libraries/LibJS/Runtime/Object.h
View file

@ -112,6 +112,8 @@ public:
virtual bool is_array() const { return false; }
virtual bool is_function() const { return false; }
virtual bool is_typed_array() const { return false; }
virtual bool is_string_object() const { return false; }
virtual bool is_global_object() const { return false; }
virtual const char* class_name() const override { return "Object"; }
virtual void visit_edges(Cell::Visitor&) override;
@ -152,6 +154,9 @@ public:
void enable_transitions() { m_transitions_enabled = true; }
void disable_transitions() { m_transitions_enabled = false; }
template<typename T>
bool fast_is() const = delete;
protected:
enum class GlobalObjectTag { Tag };
enum class ConstructWithoutPrototypeTag { Tag };

4
Userland/Libraries/LibJS/Runtime/StringObject.h
View file

@ -46,9 +46,13 @@ public:
}
private:
virtual bool is_string_object() const final { return true; }
virtual void visit_edges(Visitor&) override;
PrimitiveString& m_string;
};
template<>
inline bool Object::fast_is<StringObject>() const { return is_string_object(); }
}