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LibJS+LibWeb: Return Vector<PropertyKey> from internal_own_property_keys

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By doing that we avoid lots of `PropertyKey` -> `Value` -> `PropertyKey`
transforms, which are quite expensive because of underlying
`FlyString` -> `PrimitiveString` -> `FlyString` conversions.

10% improvement on MicroBench/object-keys.js
This commit is contained in:
Aliaksandr Kalenik 2025-05-14 15:39:48 +03:00 • committed by Alexander Kalenik
commit 5ee810f772
Notes: github-actions[bot] 2025-05-15 18:13:23 +00:00
24 changed files with 134 additions and 155 deletions
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2
Libraries/LibJS/Runtime/Object.h
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@ -147,7 +147,7 @@ public:
virtual ThrowCompletionOr<Value> internal_get(PropertyKey const&, Value receiver, CacheablePropertyMetadata* = nullptr, PropertyLookupPhase = PropertyLookupPhase::OwnProperty) const;
virtual ThrowCompletionOr<bool> internal_set(PropertyKey const&, Value value, Value receiver, CacheablePropertyMetadata* = nullptr, PropertyLookupPhase = PropertyLookupPhase::OwnProperty);
virtual ThrowCompletionOr<bool> internal_delete(PropertyKey const&);
virtual ThrowCompletionOr<GC::RootVector<Value>> internal_own_property_keys() const;
virtual ThrowCompletionOr<Vector<PropertyKey>> internal_own_property_keys() const;
// NOTE: Any subclass of Object that overrides property access slots ([[Get]], [[Set]] etc)
// to customize access to indexed properties (properties where the name is a positive integer)