Revert of Revert [TypeFeedbackVector] Root literal arrays in function literal slots

src/builtins/builtins-constructor.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/builtins/builtins-constructor.h"
 #include "src/ast/ast.h"
 #include "src/builtins/builtins-utils.h"
 #include "src/builtins/builtins.h"
 #include "src/code-factory.h"
 #include "src/code-stub-assembler.h"
@@ skipping 102 matching lines @@
 
   // Get the function map in the current native context and set that
   // as the map of the allocated object.
   Node* native_context = LoadNativeContext(context);
   Node* map_slot_value =
       LoadFixedArrayElement(native_context, map_index.value());
   StoreMapNoWriteBarrier(result, map_slot_value);
 
   // Initialize the rest of the function.
   Node* empty_fixed_array = HeapConstant(factory->empty_fixed_array());
-  Node* empty_literals_array = HeapConstant(factory->empty_literals_array());
   StoreObjectFieldNoWriteBarrier(result, JSObject::kPropertiesOffset,
                                  empty_fixed_array);
   StoreObjectFieldNoWriteBarrier(result, JSObject::kElementsOffset,
                                  empty_fixed_array);
+  Node* literals_array = LoadFixedArrayElement(
+      feedback_vector, slot, 0, CodeStubAssembler::SMI_PARAMETERS);
   StoreObjectFieldNoWriteBarrier(result, JSFunction::kLiteralsOffset,
-                                 empty_literals_array);
+                                 literals_array);
   StoreObjectFieldNoWriteBarrier(
       result, JSFunction::kPrototypeOrInitialMapOffset, TheHoleConstant());
   StoreObjectFieldNoWriteBarrier(result, JSFunction::kSharedFunctionInfoOffset,
                                  shared_info);
   StoreObjectFieldNoWriteBarrier(result, JSFunction::kContextOffset, context);
   Handle<Code> lazy_builtin_handle(
       isolate->builtins()->builtin(Builtins::kCompileLazy));
   Node* lazy_builtin = HeapConstant(lazy_builtin_handle);
   Node* lazy_builtin_entry =
       IntPtrAdd(BitcastTaggedToWord(lazy_builtin),
@@ skipping 623 matching lines @@
     case 6:
       return FastCloneShallowObject6();
     default:
       UNREACHABLE();
   }
   return Handle<Code>::null();
 }
 
 }  // namespace internal
 }  // namespace v8