[async-iteration] add support for for-await-of loops in Async Functions

src/interpreter/constant-array-builder.h

 // 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.
 
 #ifndef V8_INTERPRETER_CONSTANT_ARRAY_BUILDER_H_
 #define V8_INTERPRETER_CONSTANT_ARRAY_BUILDER_H_
 
 #include "src/globals.h"
 #include "src/identity-map.h"
 #include "src/interpreter/bytecodes.h"
 #include "src/zone/zone-containers.h"
 
 namespace v8 {
 namespace internal {
 
 class Isolate;
 class AstRawString;
 class AstValue;
 
 namespace interpreter {
 
 // Constant array entries that represent singletons.
-#define SINGLETON_CONSTANT_ENTRY_TYPES(V) \
-  V(IteratorSymbol, iterator_symbol)      \
-  V(HomeObjectSymbol, home_object_symbol) \
+#define SINGLETON_CONSTANT_ENTRY_TYPES(V)       \
+  V(IteratorSymbol, iterator_symbol)            \
+  V(AsyncIteratorSymbol, async_iterator_symbol) \
+  V(HomeObjectSymbol, home_object_symbol)       \
   V(EmptyFixedArray, empty_fixed_array)
 
 // A helper class for constructing constant arrays for the
 // interpreter. Each instance of this class is intended to be used to
 // generate exactly one FixedArray of constants via the ToFixedArray
 // method.
 class V8_EXPORT_PRIVATE ConstantArrayBuilder final BASE_EMBEDDED {
  public:
   // Capacity of the 8-bit operand slice.
   static const size_t k8BitCapacity = 1u << kBitsPerByte;
@@ skipping 154 matching lines @@
 #undef SINGLETON_ENTRY_FIELD
 
   Zone* zone_;
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_CONSTANT_ARRAY_BUILDER_H_