[Interpreter] Support for operator new.

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index 3ed234c778d9ba5d837b717132ec24c2cbb3f671..495f8ccf215dd9063a2005fce2487a9bce3e04c3 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -514,6 +514,25 @@ void Interpreter::DoCallRuntime(compiler::InterpreterAssembler* assembler) {
 }
 
 
+// New <constructor> <arg_count>
+//
+// Call operator new with |constructor| and the first argument in
+// register |first_arg| and |arg_count| arguments in subsequent
+//
+void Interpreter::DoNew(compiler::InterpreterAssembler* assembler) {
+  Callable ic = CodeFactory::InterpreterPushArgsAndConstruct(isolate_);
+  Node* constructor_index = __ BytecodeOperandReg8(0);
+  Node* constructor = __ LoadRegister(constructor_index);
+  Node* first_arg_reg = __ BytecodeOperandReg8(1);
+  Node* first_arg = __ RegisterLocation(first_arg_reg);
+  Node* args_count = __ BytecodeOperandCount8(2);
+  Node* result =
+      __ CallConstruct(constructor, constructor, first_arg, args_count);
+  __ SetAccumulator(result);
+  __ Dispatch();
+}
+
+
 // TestEqual <src>
 //
 // Test if the value in the <src> register equals the accumulator.