[TypeFeedbackVector] Root feedback vectors at function literal site.

src/compiler/js-create-lowering.cc

Index: src/compiler/js-create-lowering.cc
diff --git a/src/compiler/js-create-lowering.cc b/src/compiler/js-create-lowering.cc
index ebd0d258caa526a4e82a324fe92d57e7b45ca12d..dc35d5c2edcde5ed3e78d12f70f20661ab1da313 100644
--- a/src/compiler/js-create-lowering.cc
+++ b/src/compiler/js-create-lowering.cc
@@ -764,12 +764,15 @@ Reduction JSCreateLowering::ReduceJSCreateClosure(Node* node) {
   Node* function_map = jsgraph()->HeapConstant(
       handle(Map::cast(native_context()->get(function_map_index)), isolate()));
 
+  FeedbackVectorSlot slot = p.feedback().slot();
+  Node* literals_cell = jsgraph()->HeapConstant(
+      handle(Cell::cast(p.feedback().vector()->Get(slot)), isolate()));
+
   // Note that it is only safe to embed the raw entry point of the compile
   // lazy stub into the code, because that stub is immortal and immovable.
   Node* compile_entry = jsgraph()->PointerConstant(
       jsgraph()->isolate()->builtins()->CompileLazy()->entry());
   Node* empty_fixed_array = jsgraph()->EmptyFixedArrayConstant();
-  Node* empty_feedback_vector = jsgraph()->EmptyFeedbackVectorConstant();
   Node* the_hole = jsgraph()->TheHoleConstant();
   Node* undefined = jsgraph()->UndefinedConstant();
   AllocationBuilder a(jsgraph(), effect, control);
@@ -778,7 +781,7 @@ Reduction JSCreateLowering::ReduceJSCreateClosure(Node* node) {
   a.Store(AccessBuilder::ForMap(), function_map);
   a.Store(AccessBuilder::ForJSObjectProperties(), empty_fixed_array);
   a.Store(AccessBuilder::ForJSObjectElements(), empty_fixed_array);
-  a.Store(AccessBuilder::ForJSFunctionFeedbackVector(), empty_feedback_vector);
+  a.Store(AccessBuilder::ForJSFunctionFeedbackVector(), literals_cell);
   a.Store(AccessBuilder::ForJSFunctionPrototypeOrInitialMap(), the_hole);
   a.Store(AccessBuilder::ForJSFunctionSharedFunctionInfo(), shared);
   a.Store(AccessBuilder::ForJSFunctionContext(), context);