Support untagged object pool entries.

runtime/vm/instructions_x64.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.
 // Classes that describe assembly patterns as used by inline caches.
 
 #ifndef VM_INSTRUCTIONS_X64_H_
 #define VM_INSTRUCTIONS_X64_H_
 
 #ifndef VM_INSTRUCTIONS_H_
 #error Do not include instructions_ia32.h directly; use instructions.h instead.
@@ skipping 42 matching lines @@
   const uword start_;
 
   DISALLOW_COPY_AND_ASSIGN(InstructionPattern);
 };
 
 
 class JumpPattern : public InstructionPattern {
  public:
   JumpPattern(uword pc, const Code& code)
       : InstructionPattern(pc),
-        object_pool_(Array::Handle(code.ObjectPool())) {}
+        object_pool_(ObjectPool::Handle(code.GetObjectPool())) {}
   static int InstructionLength() {
     return kLengthInBytes;
   }
   uword TargetAddress() const;
   void SetTargetAddress(uword new_target) const;
   virtual int pattern_length_in_bytes() const {
     return kLengthInBytes;
   }
 
   static const int kLengthInBytes = 7;
  private:
   virtual const int* pattern() const;
-  const Array& object_pool_;
+  const ObjectPool& object_pool_;
 
   DISALLOW_COPY_AND_ASSIGN(JumpPattern);
 };
 
 
 // 5 byte call instruction.
 class ShortCallPattern : public InstructionPattern {
  public:
   explicit ShortCallPattern(uword pc) : InstructionPattern(pc) {}
   static int InstructionLength() {
@@ skipping 21 matching lines @@
   virtual const int* pattern() const;
   virtual int pattern_length_in_bytes() const { return kLengthInBytes; }
 
  private:
   static const int kLengthInBytes = 1;
 };
 
 }  // namespace dart
 
 #endif  // VM_INSTRUCTIONS_X64_H_