Out-of-line constant pool on Arm: Stage 2 - Introduce ConstantPoolArray object.

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 53 matching lines @@
   V(Map, global_property_cell_map, GlobalPropertyCellMap)                      \
   V(Map, shared_function_info_map, SharedFunctionInfoMap)                      \
   V(Map, meta_map, MetaMap)                                                    \
   V(Map, heap_number_map, HeapNumberMap)                                       \
   V(Map, native_context_map, NativeContextMap)                                 \
   V(Map, fixed_array_map, FixedArrayMap)                                       \
   V(Map, code_map, CodeMap)                                                    \
   V(Map, scope_info_map, ScopeInfoMap)                                         \
   V(Map, fixed_cow_array_map, FixedCOWArrayMap)                                \
   V(Map, fixed_double_array_map, FixedDoubleArrayMap)                          \
+  V(Map, constant_pool_array_map, ConstantPoolArrayMap)                        \
   V(Object, no_interceptor_result_sentinel, NoInterceptorResultSentinel)       \
   V(Map, hash_table_map, HashTableMap)                                         \
   V(FixedArray, empty_fixed_array, EmptyFixedArray)                            \
   V(ByteArray, empty_byte_array, EmptyByteArray)                               \
   V(DescriptorArray, empty_descriptor_array, EmptyDescriptorArray)             \
   V(Smi, stack_limit, StackLimit)                                              \
   V(Oddball, arguments_marker, ArgumentsMarker)                                \
   /* The first 32 roots above this line should be boring from a GC point of */ \
   /* view.  This means they are never in new space and never on a page that */ \
   /* is being compacted.                                                    */ \
@@ skipping 876 matching lines @@
   // Make a copy of src and return it. Returns
   // Failure::RetryAfterGC(requested_bytes, space) if the allocation failed.
   MUST_USE_RESULT inline MaybeObject* CopyFixedDoubleArray(
       FixedDoubleArray* src);
 
   // Make a copy of src, set the map, and return the copy. Returns
   // Failure::RetryAfterGC(requested_bytes, space) if the allocation failed.
   MUST_USE_RESULT MaybeObject* CopyFixedDoubleArrayWithMap(
       FixedDoubleArray* src, Map* map);
 
+  // Make a copy of src and return it. Returns
+  // Failure::RetryAfterGC(requested_bytes, space) if the allocation failed.
+  MUST_USE_RESULT inline MaybeObject* CopyConstantPoolArray(
+      ConstantPoolArray* src);
+
+  // Make a copy of src, set the map, and return the copy. Returns
+  // Failure::RetryAfterGC(requested_bytes, space) if the allocation failed.
+  MUST_USE_RESULT MaybeObject* CopyConstantPoolArrayWithMap(
+      ConstantPoolArray* src, Map* map);
+
   // 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* AllocateRawFixedDoubleArray(
       int length,
       PretenureFlag pretenure);
 
+  MUST_USE_RESULT MaybeObject* AllocateRawConstantPoolArray(
+      int length,
+      int first_int32_index,
+      PretenureFlag pretenure);
+
   // 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
   // Failure::RetryAfterGC(requested_bytes, space) if the allocation failed.
   // Please note this does not perform a garbage collection.
@@ skipping 2049 matching lines @@
   DisallowHeapAllocation no_allocation;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_