[TypeFeedbackVector] Root literal arrays in function literals slots

src/code-stubs.cc

Index: src/code-stubs.cc
diff --git a/src/code-stubs.cc b/src/code-stubs.cc
index 8345912cf79220428ae3541726b267ceb3b1e67d..ecd25e1b0bc76c67b8db7d76cfed9391cb00b02b 100644
--- a/src/code-stubs.cc
+++ b/src/code-stubs.cc
@@ -2438,6 +2438,8 @@ void GetPropertyStub::GenerateAssembly(
 // static
 compiler::Node* FastNewClosureStub::Generate(CodeStubAssembler* assembler,
                                              compiler::Node* shared_info,
+                                             compiler::Node* feedback_vector,
+                                             compiler::Node* slot,
                                              compiler::Node* context) {
   typedef compiler::Node Node;
   typedef compiler::CodeAssembler::Label Label;
@@ -2551,14 +2553,14 @@ compiler::Node* FastNewClosureStub::Generate(CodeStubAssembler* assembler,
   // Initialize the rest of the function.
   Node* empty_fixed_array =
       assembler->HeapConstant(factory->empty_fixed_array());
-  Node* empty_literals_array =
-      assembler->HeapConstant(factory->empty_literals_array());
   assembler->StoreObjectFieldNoWriteBarrier(result, JSObject::kPropertiesOffset,
                                             empty_fixed_array);
   assembler->StoreObjectFieldNoWriteBarrier(result, JSObject::kElementsOffset,
                                             empty_fixed_array);
+  Node* literals_array = assembler->LoadFixedArrayElement(
+      feedback_vector, slot, 0, CodeStubAssembler::SMI_PARAMETERS);
   assembler->StoreObjectFieldNoWriteBarrier(result, JSFunction::kLiteralsOffset,
-                                            empty_literals_array);
+                                            literals_array);
   assembler->StoreObjectFieldNoWriteBarrier(
       result, JSFunction::kPrototypeOrInitialMapOffset,
       assembler->TheHoleConstant());
@@ -2584,11 +2586,13 @@ compiler::Node* FastNewClosureStub::Generate(CodeStubAssembler* assembler,
 
 void FastNewClosureStub::GenerateAssembly(
     compiler::CodeAssemblerState* state) const {
-  typedef compiler::Node Node;
   CodeStubAssembler assembler(state);
+  typedef compiler::Node Node;
   Node* shared = assembler.Parameter(Descriptor::kSharedFunctionInfo);
   Node* context = assembler.Parameter(Descriptor::kContext);
-  assembler.Return(Generate(&assembler, shared, context));
+  Node* vector = assembler.Parameter(Descriptor::kVector);
+  Node* slot = assembler.Parameter(Descriptor::kSlot);
+  assembler.Return(Generate(&assembler, shared, vector, slot, context));
 }
 
 // static