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diff --git a/deps/v8/src/compiler/interpreter-assembler.h b/deps/v8/src/compiler/interpreter-assembler.h
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+// 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.
+
+#ifndef V8_COMPILER_INTERPRETER_ASSEMBLER_H_
+#define V8_COMPILER_INTERPRETER_ASSEMBLER_H_
+
+// Clients of this interface shouldn't depend on lots of compiler internals.
+// Do not include anything from src/compiler here!
+#include "src/allocation.h"
+#include "src/base/smart-pointers.h"
+#include "src/frames.h"
+#include "src/interpreter/bytecodes.h"
+#include "src/unique.h"
+
+namespace v8 {
+namespace internal {
+
+class Isolate;
+class Zone;
+
+namespace compiler {
+
+class CallDescriptor;
+class Graph;
+class Node;
+class Operator;
+class RawMachineAssembler;
+class Schedule;
+
+class InterpreterAssembler {
+ public:
+  InterpreterAssembler(Isolate* isolate, Zone* zone,
+                       interpreter::Bytecode bytecode);
+  virtual ~InterpreterAssembler();
+
+  Handle<Code> GenerateCode();
+
+  // Returns the Imm8 immediate for bytecode operand |operand_index| in the
+  // current bytecode.
+  Node* BytecodeOperandImm8(int operand_index);
+  // Returns the register index for bytecode operand |operand_index| in the
+  // current bytecode.
+  Node* BytecodeOperandReg(int operand_index);
+
+  // Accumulator.
+  Node* GetAccumulator();
+  void SetAccumulator(Node* value);
+
+  // Loads from and stores to the interpreter register file.
+  Node* LoadRegister(Node* reg_index);
+  Node* StoreRegister(Node* value, Node* reg_index);
+
+  // Constants.
+  Node* Int32Constant(int value);
+  Node* NumberConstant(double value);
+  Node* HeapConstant(Unique<HeapObject> object);
+
+  // Tag and untag Smi values.
+  Node* SmiTag(Node* value);
+  Node* SmiUntag(Node* value);
+
+  // Returns from the function.
+  void Return();
+
+  // Dispatch to the bytecode.
+  void Dispatch();
+
+ protected:
+  // Close the graph.
+  void End();
+
+  // Protected helpers (for testing) which delegate to RawMachineAssembler.
+  CallDescriptor* call_descriptor() const;
+  Graph* graph();
+
+ private:
+  // Returns a raw pointer to start of the register file on the stack.
+  Node* RegisterFileRawPointer();
+  // Returns a tagged pointer to the current function's BytecodeArray object.
+  Node* BytecodeArrayTaggedPointer();
+  // Returns the offset from the BytecodeArrayPointer of the current bytecode.
+  Node* BytecodeOffset();
+  // Returns a pointer to first entry in the interpreter dispatch table.
+  Node* DispatchTableRawPointer();
+
+  // Returns the offset of register |index| relative to RegisterFilePointer().
+  Node* RegisterFrameOffset(Node* index);
+
+  Node* SmiShiftBitsConstant();
+  Node* BytecodeOperand(int operand_index);
+  Node* BytecodeOperandSignExtended(int operand_index);
+
+  // Returns BytecodeOffset() advanced by delta bytecodes. Note: this does not
+  // update BytecodeOffset() itself.
+  Node* Advance(int delta);
+
+  // Sets the end node of the graph.
+  void SetEndInput(Node* input);
+
+  // Private helpers which delegate to RawMachineAssembler.
+  Isolate* isolate();
+  Schedule* schedule();
+
+  interpreter::Bytecode bytecode_;
+  base::SmartPointer<RawMachineAssembler> raw_assembler_;
+  Node* end_node_;
+  Node* accumulator_;
+  bool code_generated_;
+
+  DISALLOW_COPY_AND_ASSIGN(InterpreterAssembler);
+};
+
+}  // namespace interpreter
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_COMPILER_INTERPRETER_ASSEMBLER_H_