[Interpreter] Support for operator new.

src/interpreter/interpreter.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/interpreter/interpreter.h"
 
 #include "src/code-factory.h"
 #include "src/compiler.h"
 #include "src/compiler/interpreter-assembler.h"
 #include "src/factory.h"
@@ skipping 496 matching lines @@
   Node* function_id = __ BytecodeOperandIdx16(0);
   Node* first_arg_reg = __ BytecodeOperandReg8(1);
   Node* first_arg = __ RegisterLocation(first_arg_reg);
   Node* args_count = __ BytecodeOperandCount8(2);
   Node* result = __ CallRuntime(function_id, first_arg, args_count);
   __ SetAccumulator(result);
   __ Dispatch();
 }
 
 
+// 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.
 void Interpreter::DoTestEqual(compiler::InterpreterAssembler* assembler) {
   DoBinaryOp(Runtime::kInterpreterEquals, assembler);
 }
 
 
 // TestNotEqual <src>
 //
@@ skipping 181 matching lines @@
 //
 // Return the value in the accumulator.
 void Interpreter::DoReturn(compiler::InterpreterAssembler* assembler) {
   __ Return();
 }
 
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8