LibJS/JIT: Compile the GetIterator instruction

Userland/Libraries/LibJS/Bytecode/Op.h

@@ -1299,6 +1299,8 @@ public:
     ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
     DeprecatedString to_deprecated_string_impl(Bytecode::Executable const&) const;
 
+    IteratorHint hint() const { return m_hint; }
+
 private:
     IteratorHint m_hint { IteratorHint::Sync };
 };

Userland/Libraries/LibJS/JIT/Compiler.cpp

@@ -1195,6 +1195,23 @@ void Compiler::compile_super_call_with_argument_array(Bytecode::Op::SuperCallWit
     check_exception();
 }
 
+static Value cxx_get_iterator(VM& vm, Value value, IteratorHint hint)
+{
+    auto iterator = TRY_OR_SET_EXCEPTION(get_iterator(vm, value, hint));
+    return Bytecode::iterator_to_object(vm, iterator);
+}
+
+void Compiler::compile_get_iterator(Bytecode::Op::GetIterator const& op)
+{
+    load_vm_register(ARG1, Bytecode::Register::accumulator());
+    m_assembler.mov(
+        Assembler::Operand::Register(ARG2),
+        Assembler::Operand::Imm(to_underlying(op.hint())));
+    native_call((void*)cxx_get_iterator);
+    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

@@ -105,7 +105,8 @@ private:
         O(ContinuePendingUnwind, continue_pending_unwind)                        \
         O(ConcatString, concat_string)                                           \
         O(BlockDeclarationInstantiation, block_declaration_instantiation)        \
-        O(SuperCallWithArgumentArray, super_call_with_argument_array)
+        O(SuperCallWithArgumentArray, super_call_with_argument_array)            \
+        O(GetIterator, get_iterator)
 
 #    define DECLARE_COMPILE_OP(OpTitleCase, op_snake_case) \
         void compile_##op_snake_case(Bytecode::Op::OpTitleCase const&);