Ensure that we don't mark weak heap references in the constant pool array.

src/objects-inl.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 2200 matching lines @@
   WRITE_DOUBLE_FIELD(this, offset, hole_nan_as_double());
 }
 
 
 bool FixedDoubleArray::is_the_hole(int index) {
   int offset = kHeaderSize + index * kDoubleSize;
   return is_the_hole_nan(READ_DOUBLE_FIELD(this, offset));
 }
 
 
-SMI_ACCESSORS(
-    ConstantPoolArray, first_code_ptr_index, kFirstCodePointerIndexOffset)
-SMI_ACCESSORS(
-    ConstantPoolArray, first_heap_ptr_index, kFirstHeapPointerIndexOffset)
-SMI_ACCESSORS(
-    ConstantPoolArray, first_int32_index, kFirstInt32IndexOffset)
+void ConstantPoolArray::set_weak_object_state(
+      ConstantPoolArray::WeakObjectState state) {
+  int old_layout_field = READ_INT_FIELD(this, kArrayLayoutOffset);
+  int new_layout_field = WeakObjectStateField::update(old_layout_field, state);
+  WRITE_INT_FIELD(this, kArrayLayoutOffset, new_layout_field);
+}
+
+
+ConstantPoolArray::WeakObjectState ConstantPoolArray::get_weak_object_state() {
+  int layout_field = READ_INT_FIELD(this, kArrayLayoutOffset);
+  return WeakObjectStateField::decode(layout_field);
+}
 
 
 int ConstantPoolArray::first_int64_index() {
   return 0;
 }
 
 
+int ConstantPoolArray::first_code_ptr_index() {
+  int layout_field = READ_INT_FIELD(this, kArrayLayoutOffset);
+  return first_int64_index() +
+      NumberOfInt64EntriesField::decode(layout_field);
+}
+
+
+int ConstantPoolArray::first_heap_ptr_index() {
+  int layout_field = READ_INT_FIELD(this, kArrayLayoutOffset);
+  return first_code_ptr_index() +
+      NumberOfCodePtrEntriesField::decode(layout_field);
+}
+
+
+int ConstantPoolArray::first_int32_index() {
+  int layout_field = READ_INT_FIELD(this, kArrayLayoutOffset);
+  return first_heap_ptr_index() +
+      NumberOfHeapPtrEntriesField::decode(layout_field);
+}
+
+
 int ConstantPoolArray::count_of_int64_entries() {
   return first_code_ptr_index();
 }
 
 
 int ConstantPoolArray::count_of_code_ptr_entries() {
   return first_heap_ptr_index() - first_code_ptr_index();
 }
 
 
 int ConstantPoolArray::count_of_heap_ptr_entries() {
   return first_int32_index() - first_heap_ptr_index();
 }
 
 
 int ConstantPoolArray::count_of_int32_entries() {
   return length() - first_int32_index();
 }
 
 
-void ConstantPoolArray::SetEntryCounts(int number_of_int64_entries,
-                                       int number_of_code_ptr_entries,
-                                       int number_of_heap_ptr_entries,
-                                       int number_of_int32_entries) {
-  int current_index = number_of_int64_entries;
-  set_first_code_ptr_index(current_index);
-  current_index += number_of_code_ptr_entries;
-  set_first_heap_ptr_index(current_index);
-  current_index += number_of_heap_ptr_entries;
-  set_first_int32_index(current_index);
-  current_index += number_of_int32_entries;
-  set_length(current_index);
+void ConstantPoolArray::Init(int number_of_int64_entries,
+                             int number_of_code_ptr_entries,
+                             int number_of_heap_ptr_entries,
+                             int number_of_int32_entries) {
+  set_length(number_of_int64_entries +
+             number_of_code_ptr_entries +
+             number_of_heap_ptr_entries +
+             number_of_int32_entries);
+  int layout_field =
+      NumberOfInt64EntriesField::encode(number_of_int64_entries) |
+      NumberOfCodePtrEntriesField::encode(number_of_code_ptr_entries) |
+      NumberOfHeapPtrEntriesField::encode(number_of_heap_ptr_entries) |
+      WeakObjectStateField::encode(NO_WEAK_OBJECTS);
+  WRITE_INT_FIELD(this, kArrayLayoutOffset, layout_field);
 }
 
 
 int64_t ConstantPoolArray::get_int64_entry(int index) {
   ASSERT(map() == GetHeap()->constant_pool_array_map());
   ASSERT(index >= 0 && index < first_code_ptr_index());
   return READ_INT64_FIELD(this, OffsetOfElementAt(index));
 }
 
 double ConstantPoolArray::get_int64_entry_as_double(int index) {
@@ skipping 2315 matching lines @@
 }
 
 
 Object* Code::GetObjectFromEntryAddress(Address location_of_address) {
   return HeapObject::
       FromAddress(Memory::Address_at(location_of_address) - Code::kHeaderSize);
 }
 
 
 bool Code::IsWeakObjectInOptimizedCode(Object* object) {
-  ASSERT(is_optimized_code());
   if (object->IsMap()) {
     return Map::cast(object)->CanTransition() &&
            FLAG_collect_maps &&
            FLAG_weak_embedded_maps_in_optimized_code;
   }
   if (object->IsJSObject() ||
       (object->IsCell() && Cell::cast(object)->value()->IsJSObject())) {
     return FLAG_weak_embedded_objects_in_optimized_code;
   }
   return false;
@@ skipping 2187 matching lines @@
 #undef READ_UINT32_FIELD
 #undef WRITE_UINT32_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_