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LibJS: Introduce Builtins

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Builtins are functions that can be detected during bytecode generation
and enable fast-paths in the JIT.
This commit is contained in:
Simon Wanner 2023-11-17 11:48:30 +01:00 • committed by Andreas Kling
parent b9141d85d8
commit 86b85aa68b
13 changed files with 191 additions and 4 deletions
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4
Userland/Libraries/LibJS/Runtime/Object.cpp
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@ -1269,10 +1269,12 @@ Value Object::get_without_side_effects(PropertyKey const& property_key) const
return {};
}
void Object::define_native_function(Realm& realm, PropertyKey const& property_key, Function<ThrowCompletionOr<Value>(VM&)> native_function, i32 length, PropertyAttributes attribute)
void Object::define_native_function(Realm& realm, PropertyKey const& property_key, Function<ThrowCompletionOr<Value>(VM&)> native_function, i32 length, PropertyAttributes attribute, Optional<Bytecode::Builtin> builtin)
{
auto function = NativeFunction::create(realm, move(native_function), length, property_key, &realm);
define_direct_property(property_key, function, attribute);
if (builtin.has_value())
realm.define_builtin(builtin.value(), function);
}
// 20.1.2.3.1 ObjectDefineProperties ( O, Properties ), https://tc39.es/ecma262/#sec-objectdefineproperties