[Interpreter] Add wide context slot load / store operations.

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 415 matching lines @@
 void Interpreter::DoLdaContextSlot(compiler::InterpreterAssembler* assembler) {
   Node* reg_index = __ BytecodeOperandReg(0);
   Node* context = __ LoadRegister(reg_index);
   Node* slot_index = __ BytecodeOperandIdx(1);
   Node* result = __ LoadContextSlot(context, slot_index);
   __ SetAccumulator(result);
   __ Dispatch();
 }
 
 
+// LdaContextSlotWide <context> <slot_index>
+//
+// Load the object in |slot_index| of |context| into the accumulator.
+void Interpreter::DoLdaContextSlotWide(
+    compiler::InterpreterAssembler* assembler) {
+  DoLdaContextSlot(assembler);
+}
+
+
 // StaContextSlot <context> <slot_index>
 //
 // Stores the object in the accumulator into |slot_index| of |context|.
 void Interpreter::DoStaContextSlot(compiler::InterpreterAssembler* assembler) {
   Node* value = __ GetAccumulator();
   Node* reg_index = __ BytecodeOperandReg(0);
   Node* context = __ LoadRegister(reg_index);
   Node* slot_index = __ BytecodeOperandIdx(1);
   __ StoreContextSlot(context, slot_index, value);
   __ Dispatch();
 }
 
 
+// StaContextSlot <context> <slot_index>
+//
+// Stores the object in the accumulator into |slot_index| of |context|.
+void Interpreter::DoStaContextSlotWide(
+    compiler::InterpreterAssembler* assembler) {
+  DoStaContextSlot(assembler);
+}
+
+
 void Interpreter::DoLoadLookupSlot(Runtime::FunctionId function_id,
                                    compiler::InterpreterAssembler* assembler) {
   Node* index = __ BytecodeOperandIdx(0);
   Node* name = __ LoadConstantPoolEntry(index);
   Node* context = __ GetContext();
   Node* result_pair = __ CallRuntime(function_id, context, name);
   Node* result = __ Projection(0, result_pair);
   __ SetAccumulator(result);
   __ Dispatch();
 }
@@ skipping 1294 matching lines @@
   Node* index_reg = __ BytecodeOperandReg(0);
   Node* index = __ LoadRegister(index_reg);
   Node* result = __ CallRuntime(Runtime::kForInStep, index);
   __ SetAccumulator(result);
   __ Dispatch();
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8