Resolve some disagreements between SIMARM and XARM on offsets used in compiled code.

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 1588 matching lines @@
 
 
 class RawSmi : public RawInteger {
   RAW_OBJECT_IMPLEMENTATION(Smi);
 };
 
 
 class RawMint : public RawInteger {
   RAW_HEAP_OBJECT_IMPLEMENTATION(Mint);
 
-  int64_t value_;
+  ALIGN8 int64_t value_;
 
   friend class Api;
   friend class SnapshotReader;
 };
+COMPILE_ASSERT(sizeof(RawMint) == 16);
 
 
 class RawBigint : public RawInteger {
   RAW_HEAP_OBJECT_IMPLEMENTATION(Bigint);
 
   RawObject** from() { return reinterpret_cast<RawObject**>(&ptr()->neg_); }
   RawBool* neg_;
   RawSmi* used_;
   RawTypedData* digits_;
   RawObject** to() { return reinterpret_cast<RawObject**>(&ptr()->digits_); }
 };
 
 
 class RawDouble : public RawNumber {
   RAW_HEAP_OBJECT_IMPLEMENTATION(Double);
 
-  double value_;
+  ALIGN8 double value_;
 
   friend class Api;
   friend class SnapshotReader;
 };
+COMPILE_ASSERT(sizeof(RawDouble) == 16);
 
 
 class RawString : public RawInstance {
   RAW_HEAP_OBJECT_IMPLEMENTATION(String);
 
  protected:
   RawObject** from() { return reinterpret_cast<RawObject**>(&ptr()->length_); }
   RawSmi* length_;
   RawSmi* hash_;
   RawObject** to() { return reinterpret_cast<RawObject**>(&ptr()->hash_); }
@@ skipping 586 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_