[Interpreter] Add support for new local function context creation.

src/compiler/interpreter-assembler.h

 // 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"
@@ skipping 42 matching lines @@
   Node* BytecodeOperandReg8(int operand_index);
 
   // Returns the index immediate for the short (16 bit) bytecode operand
   // |operand_index| in the current bytecode.
   Node* BytecodeOperandIdx16(int operand_index);
 
   // Accumulator.
   Node* GetAccumulator();
   void SetAccumulator(Node* value);
 
+  // Context.
+  Node* GetContext();
+  void SetContext(Node* value);
+
   // Loads from and stores to the interpreter register file.
   Node* LoadRegister(Node* reg_index);
   Node* StoreRegister(Node* value, Node* reg_index);
 
   // Returns the location in memory of the register |reg_index| in the
   // interpreter register file.
   Node* RegisterLocation(Node* reg_index);
 
   // Constants.
   Node* Int32Constant(int value);
@@ skipping 63 matching lines @@
 
  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 raw pointer to first entry in the interpreter dispatch table.
   Node* DispatchTableRawPointer();
-  // Returns a tagged pointer to the current context.
-  Node* ContextTaggedPointer();
 
   // 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);
   Node* BytecodeOperandShort(int operand_index);
 
   Node* CallN(CallDescriptor* descriptor, Node* code_target, Node** args);
@@ skipping 17 matching lines @@
 
   // Private helpers which delegate to RawMachineAssembler.
   Isolate* isolate();
   Schedule* schedule();
   Zone* zone();
 
   interpreter::Bytecode bytecode_;
   base::SmartPointer<RawMachineAssembler> raw_assembler_;
   ZoneVector<Node*> end_nodes_;
   Node* accumulator_;
+  Node* context_;
   bool code_generated_;
 
   DISALLOW_COPY_AND_ASSIGN(InterpreterAssembler);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_INTERPRETER_ASSEMBLER_H_