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LibJS: Add a bunch of fast_is<T> to avoid slow RTTI in hot code

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This commit is contained in:
Andreas Kling 2021-06-13 11:23:23 +02:00
parent 39ad705c13
commit 095accd2b2
5 changed files with 61 additions and 0 deletions
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4
Userland/Libraries/LibJS/Runtime/LexicalEnvironment.h
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@ -66,6 +66,7 @@ public:
EnvironmentRecordType type() const { return m_environment_record_type; }
private:
virtual bool is_lexical_environment() const override { return true; }
virtual void visit_edges(Visitor&) override;
EnvironmentRecordType m_environment_record_type : 8 { EnvironmentRecordType::Declarative };
@ -78,4 +79,7 @@ private:
Function* m_current_function { nullptr };
};
template<>
inline bool Object::fast_is<LexicalEnvironment>() const { return is_lexical_environment(); }
}