LibJS/JIT: Compile the IteratorResultDone instruction

Userland/Libraries/LibJS/JIT/Compiler.cpp

@@ -1227,6 +1227,20 @@ void Compiler::compile_iterator_next(Bytecode::Op::IteratorNext const&)
     check_exception();
 }
 
+static Value cxx_iterator_result_done(VM& vm, Value iterator)
+{
+    auto iterator_result = TRY_OR_SET_EXCEPTION(iterator.to_object(vm));
+    return Value(TRY_OR_SET_EXCEPTION(iterator_complete(vm, iterator_result)));
+}
+
+void Compiler::compile_iterator_result_done(Bytecode::Op::IteratorResultDone const&)
+{
+    load_vm_register(ARG1, Bytecode::Register::accumulator());
+    native_call((void*)cxx_iterator_result_done);
+    store_vm_register(Bytecode::Register::accumulator(), RET);
+    check_exception();
+}
+
 void Compiler::jump_to_exit()
 {
     m_assembler.jump(m_exit_label);

Userland/Libraries/LibJS/JIT/Compiler.h

@@ -107,7 +107,8 @@ private:
         O(BlockDeclarationInstantiation, block_declaration_instantiation)        \
         O(SuperCallWithArgumentArray, super_call_with_argument_array)            \
         O(GetIterator, get_iterator)                                             \
-        O(IteratorNext, iterator_next)
+        O(IteratorNext, iterator_next)                                           \
+        O(IteratorResultDone, iterator_result_done)
 
 #    define DECLARE_COMPILE_OP(OpTitleCase, op_snake_case) \
         void compile_##op_snake_case(Bytecode::Op::OpTitleCase const&);