Parse arrow functions at proper precedence level

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/objects.h"
@@ skipping 314 matching lines @@
       break;
   }
 }
 
 
 void BytecodeGenerator::VisitCompareOperation(CompareOperation* node) {
   UNIMPLEMENTED();
 }
 
 
-void BytecodeGenerator::VisitSpread(Spread* node) { UNIMPLEMENTED(); }
+void BytecodeGenerator::VisitSpread(Spread* node) { UNREACHABLE(); }
+
+
+void BytecodeGenerator::VisitEmptyParentheses(EmptyParentheses* node) {
+  UNREACHABLE();
+}
 
 
 void BytecodeGenerator::VisitThisFunction(ThisFunction* node) {
   UNIMPLEMENTED();
 }
 
 
 void BytecodeGenerator::VisitSuperCallReference(SuperCallReference* node) {
   UNIMPLEMENTED();
 }
@@ skipping 15 matching lines @@
 
   Visit(left);
   builder().StoreAccumulatorInRegister(temporary);
   Visit(right);
   builder().BinaryOperation(op, temporary);
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8