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

src/heap.h

Index: src/heap.h
diff --git a/src/heap.h b/src/heap.h
index 1b6bf8eb019d3466bc70d55fe49aa5a06832fe01..96b86f54e802003751255dc286a3974ad13941a9 100644
--- a/src/heap.h
+++ b/src/heap.h
@@ -71,6 +71,7 @@ namespace internal {
   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)                            \
@@ -967,6 +968,16 @@ class Heap {
   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.
@@ -979,6 +990,11 @@ class Heap {
       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.