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

src/compiler/bytecode-graph-builder.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/compiler/bytecode-graph-builder.h"
 
 #include "src/compiler/bytecode-branch-analysis.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/operator-properties.h"
 #include "src/interpreter/bytecodes.h"
@@ skipping 748 matching lines @@
   // available in bytecode array. update this code when the implementation
   // changes.
   const Operator* op =
       javascript()->LoadContext(0, iterator.GetIndexOperand(1), false);
   Node* context = environment()->LookupRegister(iterator.GetRegisterOperand(0));
   Node* node = NewNode(op, context);
   environment()->BindAccumulator(node);
 }
 
 
+void BytecodeGraphBuilder::VisitLdaContextSlotWide(
+    const interpreter::BytecodeArrayIterator& iterator) {
+  VisitLdaContextSlot(iterator);
+}
+
+
 void BytecodeGraphBuilder::VisitStaContextSlot(
     const interpreter::BytecodeArrayIterator& iterator) {
   // TODO(mythria): LoadContextSlots are unrolled by the required depth when
   // generating bytecode. Hence the value of depth is always 0. Update this
   // code, when the implementation changes.
   const Operator* op =
       javascript()->StoreContext(0, iterator.GetIndexOperand(1));
   Node* context = environment()->LookupRegister(iterator.GetRegisterOperand(0));
   Node* value = environment()->LookupAccumulator();
   NewNode(op, context, value);
 }
 
 
+void BytecodeGraphBuilder::VisitStaContextSlotWide(
+    const interpreter::BytecodeArrayIterator& iterator) {
+  VisitStaContextSlot(iterator);
+}
+
+
 void BytecodeGraphBuilder::BuildLdaLookupSlot(
     TypeofMode typeof_mode,
     const interpreter::BytecodeArrayIterator& iterator) {
   FrameStateBeforeAndAfter states(this, iterator);
   Handle<String> name =
       Handle<String>::cast(iterator.GetConstantForIndexOperand(0));
   const Operator* op = javascript()->LoadDynamic(name, typeof_mode);
   Node* value =
       NewNode(op, BuildLoadFeedbackVector(), environment()->Context());
   environment()->BindAccumulator(value, &states);
@@ skipping 1211 matching lines @@
 
 void BytecodeGraphBuilder::UpdateControlDependencyToLeaveFunction(Node* exit) {
   if (environment()->IsMarkedAsUnreachable()) return;
   environment()->MarkAsUnreachable();
   exit_controls_.push_back(exit);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8