Move selector and arguments descriptor into MegamorphicCache.

runtime/vm/raw_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_RAW_OBJECT_H_
 #define VM_RAW_OBJECT_H_
 
 #include "platform/assert.h"
 #include "vm/atomic.h"
 #include "vm/globals.h"
@@ skipping 1403 matching lines @@
 
 
 class RawMegamorphicCache : public RawObject {
   RAW_HEAP_OBJECT_IMPLEMENTATION(MegamorphicCache);
 
   RawObject** from() {
     return reinterpret_cast<RawObject**>(&ptr()->buckets_);
   }
   RawArray* buckets_;
   RawSmi* mask_;
+  RawString* target_name_;     // Name of target function.
+  RawArray* args_descriptor_;  // Arguments descriptor.
   RawObject** to() {
-    return reinterpret_cast<RawObject**>(&ptr()->mask_);
+    return reinterpret_cast<RawObject**>(&ptr()->args_descriptor_);
   }
 
   int32_t filled_entry_count_;
 };
 
 
 class RawSubtypeTestCache : public RawObject {
   RAW_HEAP_OBJECT_IMPLEMENTATION(SubtypeTestCache);
   RawArray* cache_;
 };
@@ skipping 829 matching lines @@
   COMPILE_ASSERT(kExternalTypedDataInt8ArrayCid ==
                  kTypedDataInt8ArrayViewCid + 15);
   COMPILE_ASSERT(kByteBufferCid == kExternalTypedDataInt8ArrayCid + 14);
   COMPILE_ASSERT(kNullCid == kByteBufferCid + 1);
   return (kNullCid - kTypedDataInt8ArrayCid);
 }
 
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_