[es7] implement |do| expressions proposal

src/interpreter/bytecode-generator.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/bytecode-generator.h"
 
 #include <stack>
 
 #include "src/compiler.h"
 #include "src/interpreter/control-flow-builders.h"
@@ skipping 391 matching lines @@
   UNIMPLEMENTED();
 }
 
 
 void BytecodeGenerator::VisitNativeFunctionLiteral(
     NativeFunctionLiteral* expr) {
   UNIMPLEMENTED();
 }
 
 
+void BytecodeGenerator::VisitDoExpression(DoExpression* expr) {
+  UNIMPLEMENTED();
+}
+
+
 void BytecodeGenerator::VisitConditional(Conditional* expr) { UNIMPLEMENTED(); }
 
 
 void BytecodeGenerator::VisitLiteral(Literal* expr) {
   Handle<Object> value = expr->value();
   if (value->IsSmi()) {
     builder()->LoadLiteral(Smi::cast(*value));
   } else if (value->IsUndefined()) {
     builder()->LoadUndefined();
   } else if (value->IsTrue()) {
@@ skipping 433 matching lines @@
 int BytecodeGenerator::feedback_index(FeedbackVectorSlot slot) const {
   return info()->feedback_vector()->GetIndex(slot);
 }
 
 
 Register BytecodeGenerator::current_context() const { return current_context_; }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8