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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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3
Libraries/LibJS/Runtime/Array.cpp
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@@ -40,7 +40,8 @@ Array* Array::create(GlobalObject& global_object)
Array::Array(Object& prototype)
: Object(prototype)
{
define_native_property("length", length_getter, length_setter, Attribute::Writable);
auto& vm = this->vm();
define_native_property(vm.names.length, length_getter, length_setter, Attribute::Writable);
}
Array::~Array()