[TypeFeedbackVector] Root literal arrays in function literals slots

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 6874f301f7b74b947211e38fd72d40b905c64cac..82ef5fed7c80f5ca4e375187c375cab26d888eb6 100644
--- a/src/compiler/js-create-lowering.cc
+++ b/src/compiler/js-create-lowering.cc
@@ -762,12 +762,17 @@ 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 = jsgraph()->HeapConstant(
+      handle(LiteralsArray::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_literals_array = jsgraph()->EmptyLiteralsArrayConstant();
+  // TODO(mvstanton): With literals retrieved from the vector, we can
+  // remove EmptyLiteralsArrayConstant() from jsgraph().

[Benedikt Meurer, 2017/01/11 05:11:21]

Nit: Address this TODO in this CL.

[mvstanton, 2017/01/11 06:47:44]

Done.

   Node* the_hole = jsgraph()->TheHoleConstant();
   Node* undefined = jsgraph()->UndefinedConstant();
   AllocationBuilder a(jsgraph(), effect, control);
@@ -776,7 +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::ForJSFunctionLiterals(), empty_literals_array);
+  a.Store(AccessBuilder::ForJSFunctionLiterals(), literals);
   a.Store(AccessBuilder::ForJSFunctionPrototypeOrInitialMap(), the_hole);
   a.Store(AccessBuilder::ForJSFunctionSharedFunctionInfo(), shared);
   a.Store(AccessBuilder::ForJSFunctionContext(), context);