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LibJS: Add basic monomorphic caching for PutById property access
This patch makes it possible for JS::Object::internal_set() to populate a CacheablePropertyMetadata, and uses this to implement a basic monomorphic cache for the most common form of property write access.
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28118623f5
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28 changed files with 99 additions and 54 deletions
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@ -131,7 +131,7 @@ public:
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virtual ThrowCompletionOr<bool> internal_define_own_property(PropertyKey const&, PropertyDescriptor const&);
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virtual ThrowCompletionOr<bool> internal_has_property(PropertyKey const&) const;
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virtual ThrowCompletionOr<Value> internal_get(PropertyKey const&, Value receiver, CacheablePropertyMetadata* = nullptr) const;
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virtual ThrowCompletionOr<bool> internal_set(PropertyKey const&, Value value, Value receiver);
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virtual ThrowCompletionOr<bool> internal_set(PropertyKey const&, Value value, Value receiver, CacheablePropertyMetadata* = nullptr);
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virtual ThrowCompletionOr<bool> internal_delete(PropertyKey const&);
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virtual ThrowCompletionOr<MarkedVector<Value>> internal_own_property_keys() const;
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@ -141,7 +141,7 @@ public:
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// might not hold when property access behaves differently.
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virtual bool may_interfere_with_indexed_property_access() const { return false; }
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ThrowCompletionOr<bool> ordinary_set_with_own_descriptor(PropertyKey const&, Value, Value, Optional<PropertyDescriptor>);
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ThrowCompletionOr<bool> ordinary_set_with_own_descriptor(PropertyKey const&, Value, Value, Optional<PropertyDescriptor>, CacheablePropertyMetadata* = nullptr);
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// 10.4.7 Immutable Prototype Exotic Objects, https://tc39.es/ecma262/#sec-immutable-prototype-exotic-objects
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@ -193,6 +193,7 @@ public:
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virtual void visit_edges(Cell::Visitor&) override;
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Value get_direct(size_t index) const { return m_storage[index]; }
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void put_direct(size_t index, Value value) { m_storage[index] = value; }
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IndexedProperties const& indexed_properties() const { return m_indexed_properties; }
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IndexedProperties& indexed_properties() { return m_indexed_properties; }
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