Resize async function modifier bits

runtime/vm/object.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 2031 matching lines @@
     kVisibleBit = 7,
     kOptimizableBit = 8,
     kInlinableBit = 9,
     kIntrinsicBit = 10,
     kRecognizedBit = 11,
     kNativeBit = 12,
     kRedirectingBit = 13,
     kExternalBit = 14,
     kAllowsHoistingCheckClassBit = 15,
     kModifierPos = 16,
-    kAsyncClosureBit = 18,
+    kAsyncClosureBit = 17,
   };
   class KindBits :
     public BitField<RawFunction::Kind, kKindTagPos, kKindTagSize> {};  // NOLINT
   class StaticBit : public BitField<bool, kStaticBit, 1> {};
   class ConstBit : public BitField<bool, kConstBit, 1> {};
   class AbstractBit : public BitField<bool, kAbstractBit, 1> {};
   class VisibleBit : public BitField<bool, kVisibleBit, 1> {};
   class OptimizableBit : public BitField<bool, kOptimizableBit, 1> {};
   class InlinableBit : public BitField<bool, kInlinableBit, 1> {};
   class IntrinsicBit : public BitField<bool, kIntrinsicBit, 1> {};
   class RecognizedBit : public BitField<bool, kRecognizedBit, 1> {};
   class NativeBit : public BitField<bool, kNativeBit, 1> {};
   class ExternalBit : public BitField<bool, kExternalBit, 1> {};
   class RedirectingBit : public BitField<bool, kRedirectingBit, 1> {};
   class AllowsHoistingCheckClassBit :
       public BitField<bool, kAllowsHoistingCheckClassBit, 1> {};  // NOLINT
   class ModifierBits :
-      public BitField<RawFunction::AsyncModifier, kModifierPos, 2> {};  // NOLINT
+      public BitField<RawFunction::AsyncModifier, kModifierPos, 1> {};  // NOLINT
   class AsyncClosureBit : public BitField<bool, kAsyncClosureBit, 1> {};
 
   void set_name(const String& value) const;
   void set_kind(RawFunction::Kind value) const;
   void set_is_static(bool value) const;
   void set_is_const(bool value) const;
   void set_is_external(bool value) const;
   void set_parent_function(const Function& value) const;
   void set_owner(const Object& value) const;
   RawFunction* implicit_closure_function() const;
@@ skipping 5220 matching lines @@
 
 
 RawObject* MegamorphicCache::GetTargetFunction(const Array& array,
                                                intptr_t index) {
   return array.At((index * kEntryLength) + kTargetFunctionIndex);
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_