Implement direct allocation in old data space infrastructure.

src/heap.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 579 matching lines @@
     return new_space_.allocation_limit_address();
   }
 
   Address* OldPointerSpaceAllocationTopAddress() {
     return old_pointer_space_->allocation_top_address();
   }
   Address* OldPointerSpaceAllocationLimitAddress() {
     return old_pointer_space_->allocation_limit_address();
   }
 
+  Address* OldDataSpaceAllocationTopAddress() {
+    return old_data_space_->allocation_top_address();
+  }
+  Address* OldDataSpaceAllocationLimitAddress() {
+    return old_data_space_->allocation_limit_address();
+  }
+
   // Uncommit unused semi space.
   bool UncommitFromSpace() { return new_space_.UncommitFromSpace(); }
 
   // Allocates and initializes a new JavaScript object based on a
   // constructor.
   // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
   // failed.
   // Please note this does not perform a garbage collection.
   MUST_USE_RESULT MaybeObject* AllocateJSObject(
       JSFunction* constructor,
@@ skipping 709 matching lines @@
   inline bool InNewSpace(Object* object);
   inline bool InNewSpace(Address address);
   inline bool InNewSpacePage(Address address);
   inline bool InFromSpace(Object* object);
   inline bool InToSpace(Object* object);
 
   // Returns whether the object resides in old pointer space.
   inline bool InOldPointerSpace(Address address);
   inline bool InOldPointerSpace(Object* object);
 
+  // Returns whether the object resides in old data space.
+  inline bool InOldDataSpace(Address address);
+  inline bool InOldDataSpace(Object* object);
+
   // Checks whether an address/object in the heap (including auxiliary
   // area and unused area).
   bool Contains(Address addr);
   bool Contains(HeapObject* value);
 
   // Checks whether an address/object in a space.
   // Currently used by tests, serialization and heap verification only.
   bool InSpace(Address addr, AllocationSpace space);
   bool InSpace(HeapObject* value, AllocationSpace space);
 
@@ skipping 1687 matching lines @@
   AssertNoAllocation no_alloc;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_