WIP [esnext] implement async iteration proposal

src/bailout-reason.h

 // 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.
 
 #ifndef V8_BAILOUT_REASON_H_
 #define V8_BAILOUT_REASON_H_
 
 namespace v8 {
 namespace internal {
 
@@ skipping 128 matching lines @@
   V(kNotEnoughVirtualRegistersRegalloc,                                        \
     "Not enough virtual registers (regalloc)")                                 \
   V(kObjectLiteralWithComplexProperty, "Object literal with complex property") \
   V(kOffsetOutOfRange, "Offset out of range")                                  \
   V(kOperandIsANumber, "Operand is a number")                                  \
   V(kOperandIsASmiAndNotABoundFunction,                                        \
     "Operand is a smi and not a bound function")                               \
   V(kOperandIsASmiAndNotAFunction, "Operand is a smi and not a function")      \
   V(kOperandIsASmiAndNotAGeneratorObject,                                      \
     "Operand is a smi and not a generator object")                             \
+  V(kOperandIsASmiAndNotAnAsyncGeneratorObject,                                \
+    "Operand is a smi and not an async generator object")                      \
   V(kOperandIsASmiAndNotAName, "Operand is a smi and not a name")              \
   V(kOperandIsASmiAndNotAReceiver, "Operand is a smi and not a receiver")      \
   V(kOperandIsASmiAndNotAString, "Operand is a smi and not a string")          \
   V(kOperandIsASmi, "Operand is a smi")                                        \
   V(kOperandIsNotABoundFunction, "Operand is not a bound function")            \
   V(kOperandIsNotAFunction, "Operand is not a function")                       \
   V(kOperandIsNotAGeneratorObject, "Operand is not a generator object")        \
+  V(kOperandIsNotAnAsyncGeneratorObject,                                       \
+    "Operand is not an async generator object")                                \
   V(kOperandIsNotAName, "Operand is not a name")                               \
   V(kOperandIsNotANumber, "Operand is not a number")                           \
   V(kOperandIsNotAReceiver, "Operand is not a receiver")                       \
   V(kOperandIsNotASmi, "Operand is not a smi")                                 \
   V(kOperandIsNotAString, "Operand is not a string")                           \
   V(kOperandIsNotSmi, "Operand is not smi")                                    \
   V(kOperandNotANumber, "Operand not a number")                                \
   V(kObjectTagged, "The object is tagged")                                     \
   V(kObjectNotTagged, "The object is not tagged")                              \
   V(kOptimizationDisabled, "Optimization disabled")                            \
@@ skipping 106 matching lines @@
 };
 #undef ERROR_MESSAGES_CONSTANTS
 
 
 const char* GetBailoutReason(BailoutReason reason);
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BAILOUT_REASON_H_