VM-internalize the default Map implementation.

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 1671 matching lines @@
 };
 
 
 class RawLinkedHashMap : public RawInstance {
   RAW_HEAP_OBJECT_IMPLEMENTATION(LinkedHashMap);
 
   RawObject** from() {
     return reinterpret_cast<RawObject**>(&ptr()->type_arguments_);
   }
   RawTypeArguments* type_arguments_;
-  RawInstance* cme_mark_;
   RawArray* data_;
+  RawTypedData* index_;
   RawObject** to() {
-    return reinterpret_cast<RawObject**>(&ptr()->data_);
+    return reinterpret_cast<RawObject**>(&ptr()->index_);
   }
+  // No heap object pointers after index_.
+  RawSmi* hash_mask_;
+  RawSmi* used_data_;
+  RawSmi* deleted_keys_;

[siva, 2015/05/22 16:27:11]

We have always put the RawSmi* fields also inside the from/to block and treated
them like regular heap objects in this file. This seems inconsistent with that.

[koda, 2015/05/26 12:22:04]

Done.

 
   friend class SnapshotReader;
 };
 
 
 class RawFloat32x4 : public RawInstance {
   RAW_HEAP_OBJECT_IMPLEMENTATION(Float32x4);
 
   float value_[4];
 
@@ skipping 416 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_