Differentate between code target pointers and heap pointers in constant pools.

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 993 matching lines @@
   // Allocates a fixed array initialized with the hole values.
   // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
   // failed.
   // Please note this does not perform a garbage collection.
   MUST_USE_RESULT MaybeObject* AllocateFixedArrayWithHoles(
       int length,
       PretenureFlag pretenure = NOT_TENURED);
 
   MUST_USE_RESULT MaybeObject* AllocateConstantPoolArray(
       int first_int64_index,
-      int first_ptr_index,
+      int first_code_ptr_index,
+      int first_heap_ptr_index,
       int first_int32_index);
 
   // Allocates a fixed double array with uninitialized values. Returns
   // Failure::RetryAfterGC(requested_bytes, space) if the allocation failed.
   // Please note this does not perform a garbage collection.
   MUST_USE_RESULT MaybeObject* AllocateUninitializedFixedDoubleArray(
       int length,
       PretenureFlag pretenure = NOT_TENURED);
 
   // Allocates a fixed double array with hole values. Returns
@@ skipping 2089 matching lines @@
   DisallowHeapAllocation no_allocation;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_