FYI Implementing 'super' keyword

src/compiler/ast-graph-builder.cc

 // Copyright 2014 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/ast-graph-builder.h"
 
 #include "src/compiler.h"
 #include "src/compiler/control-builders.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/node-properties-inl.h"
@@ skipping 1454 matching lines @@
   ast_context()->ProduceValue(value);
 }
 
 
 void AstGraphBuilder::VisitThisFunction(ThisFunction* expr) {
   Node* value = GetFunctionClosure();
   ast_context()->ProduceValue(value);
 }
 
 
+void AstGraphBuilder::VisitSuperReference(SuperReference* expr) {
+  UNREACHABLE();
+}
+
+
 void AstGraphBuilder::VisitCaseClause(CaseClause* expr) { UNREACHABLE(); }
 
 
 void AstGraphBuilder::VisitDeclarations(ZoneList<Declaration*>* declarations) {
   DCHECK(globals()->is_empty());
   AstVisitor::VisitDeclarations(declarations);
   if (globals()->is_empty()) return;
   Handle<FixedArray> data =
       isolate()->factory()->NewFixedArray(globals()->length(), TENURED);
   for (int i = 0; i < globals()->length(); ++i) data->set(i, *globals()->at(i));
@@ skipping 495 matching lines @@
 
     // Continue with the original environment.
     set_environment(continuation_env);
 
     NewNode(common()->Continuation());
   }
 }
 }
 }
 }  // namespace v8::internal::compiler