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LibJS: Cache commonly used FlyStrings in the VM

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Roughly 7% of test-js runtime was spent creating FlyStrings from string
literals. This patch frontloads that work and caches all the commonly
used names in LibJS on a CommonPropertyNames struct that hangs off VM.
This commit is contained in:
Andreas Kling 2020-10-13 23:49:19 +02:00
parent 9f6c5f68b6
commit 7b863330dc
45 changed files with 651 additions and 392 deletions
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52
Libraries/LibJS/Runtime/GlobalObject.cpp
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@ -75,6 +75,8 @@ GlobalObject::GlobalObject()
void GlobalObject::initialize()
{
auto& vm = this->vm();
ensure_shape_is_unique();
// These are done first since other prototypes depend on their presence.
@ -98,36 +100,36 @@ void GlobalObject::initialize()
#undef __JS_ENUMERATE
u8 attr = Attribute::Writable | Attribute::Configurable;
define_native_function("gc", gc, 0, attr);
define_native_function("isNaN", is_nan, 1, attr);
define_native_function("isFinite", is_finite, 1, attr);
define_native_function("parseFloat", parse_float, 1, attr);
define_native_function(vm.names.gc, gc, 0, attr);
define_native_function(vm.names.isNaN, is_nan, 1, attr);
define_native_function(vm.names.isFinite, is_finite, 1, attr);
define_native_function(vm.names.parseFloat, parse_float, 1, attr);
define_property("NaN", js_nan(), 0);
define_property("Infinity", js_infinity(), 0);
define_property("undefined", js_undefined(), 0);
define_property(vm.names.NaN, js_nan(), 0);
define_property(vm.names.Infinity, js_infinity(), 0);
define_property(vm.names.undefined, js_undefined(), 0);
define_property("globalThis", this, attr);
define_property("console", heap().allocate<ConsoleObject>(*this, *this), attr);
define_property("Math", heap().allocate<MathObject>(*this, *this), attr);
define_property("JSON", heap().allocate<JSONObject>(*this, *this), attr);
define_property("Reflect", heap().allocate<ReflectObject>(*this, *this), attr);
define_property(vm.names.globalThis, this, attr);
define_property(vm.names.console, heap().allocate<ConsoleObject>(*this, *this), attr);
define_property(vm.names.Math, heap().allocate<MathObject>(*this, *this), attr);
define_property(vm.names.JSON, heap().allocate<JSONObject>(*this, *this), attr);
define_property(vm.names.Reflect, heap().allocate<ReflectObject>(*this, *this), attr);
add_constructor("Array", m_array_constructor, *m_array_prototype);
add_constructor("BigInt", m_bigint_constructor, *m_bigint_prototype);
add_constructor("Boolean", m_boolean_constructor, *m_boolean_prototype);
add_constructor("Date", m_date_constructor, *m_date_prototype);
add_constructor("Error", m_error_constructor, *m_error_prototype);
add_constructor("Function", m_function_constructor, *m_function_prototype);
add_constructor("Number", m_number_constructor, *m_number_prototype);
add_constructor("Object", m_object_constructor, *m_object_prototype);
add_constructor("Proxy", m_proxy_constructor, *m_proxy_prototype);
add_constructor("RegExp", m_regexp_constructor, *m_regexp_prototype);
add_constructor("String", m_string_constructor, *m_string_prototype);
add_constructor("Symbol", m_symbol_constructor, *m_symbol_prototype);
add_constructor(vm.names.Array, m_array_constructor, *m_array_prototype);
add_constructor(vm.names.BigInt, m_bigint_constructor, *m_bigint_prototype);
add_constructor(vm.names.Boolean, m_boolean_constructor, *m_boolean_prototype);
add_constructor(vm.names.Date, m_date_constructor, *m_date_prototype);
add_constructor(vm.names.Error, m_error_constructor, *m_error_prototype);
add_constructor(vm.names.Function, m_function_constructor, *m_function_prototype);
add_constructor(vm.names.Number, m_number_constructor, *m_number_prototype);
add_constructor(vm.names.Object, m_object_constructor, *m_object_prototype);
add_constructor(vm.names.Proxy, m_proxy_constructor, *m_proxy_prototype);
add_constructor(vm.names.RegExp, m_regexp_constructor, *m_regexp_prototype);
add_constructor(vm.names.String, m_string_constructor, *m_string_prototype);
add_constructor(vm.names.Symbol, m_symbol_constructor, *m_symbol_prototype);
#define __JS_ENUMERATE(ClassName, snake_name, PrototypeName, ConstructorName) \
add_constructor(#ClassName, m_##snake_name##_constructor, *m_##snake_name##_prototype);
add_constructor(vm.names.ClassName, m_##snake_name##_constructor, *m_##snake_name##_prototype);
JS_ENUMERATE_ERROR_SUBCLASSES
#undef __JS_ENUMERATE
}