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Instead of allocating a helper object, argument names are appended right after the arguments objects. This reduces memory consumption and improve performance as well. In the future this could be further improved by a bitfield, but that would require a reference to the byte code which might increase memory consumption in a few corner cases. JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com