Refine object stats for FixedArrays.

src/heap.cc

Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index 15fd430e49409f99327abe605bad2efef6d7c8f6..06ca3859fa562b122f9d4ed96e34420382345178 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -7222,6 +7222,18 @@ void Heap::CheckpointObjectStats() {
       static_cast<int>(object_sizes_last_time_[index]));
   CODE_KIND_LIST(ADJUST_LAST_TIME_OBJECT_COUNT)
 #undef ADJUST_LAST_TIME_OBJECT_COUNT
+#define ADJUST_LAST_TIME_OBJECT_COUNT(name)               \
+  index = FIRST_FIXED_ARRAY_SUB_TYPE + name;              \
+  counters->count_of_FIXED_ARRAY_##name()->Increment(     \
+      static_cast<int>(object_counts_[index]));           \
+  counters->count_of_FIXED_ARRAY_##name()->Decrement(     \
+      static_cast<int>(object_counts_last_time_[index])); \
+  counters->size_of_FIXED_ARRAY_##name()->Increment(      \
+      static_cast<int>(object_sizes_[index]));            \
+  counters->size_of_FIXED_ARRAY_##name()->Decrement(      \
+      static_cast<int>(object_sizes_last_time_[index]));
+  FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(ADJUST_LAST_TIME_OBJECT_COUNT)
+#undef ADJUST_LAST_TIME_OBJECT_COUNT
 
   memcpy(object_counts_last_time_, object_counts_, sizeof(object_counts_));
   memcpy(object_sizes_last_time_, object_sizes_, sizeof(object_sizes_));