[TypeFeedbackVector] Root literal arrays in function literals slots

src/full-codegen/full-codegen.cc

Index: src/full-codegen/full-codegen.cc
diff --git a/src/full-codegen/full-codegen.cc b/src/full-codegen/full-codegen.cc
index 1133cab4ac0655c21565b4e0290f323a8b70f698..ae8880ddae7fb0514f457020496cfb0380294c0e 100644
--- a/src/full-codegen/full-codegen.cc
+++ b/src/full-codegen/full-codegen.cc
@@ -1027,7 +1027,11 @@ void FullCodeGenerator::EmitUnwindAndReturn() {
 }
 
 void FullCodeGenerator::EmitNewClosure(Handle<SharedFunctionInfo> info,
+                                       FeedbackVectorSlot slot,
                                        bool pretenure) {
+  // If slot is invalid, then it's a native function literal and we
+  // can pass the empty array or empty literal array, something like that...
+
   // If we're running with the --always-opt or the --prepare-always-opt
   // flag, we need to use the runtime function so that the new function
   // we are creating here gets a chance to have its code optimized and
@@ -1036,9 +1040,17 @@ void FullCodeGenerator::EmitNewClosure(Handle<SharedFunctionInfo> info,
       scope()->is_function_scope()) {
     FastNewClosureStub stub(isolate());
     __ Move(stub.GetCallInterfaceDescriptor().GetRegisterParameter(0), info);
+    DCHECK(!slot.IsInvalid());
+    __ EmitLoadTypeFeedbackVector(
+        stub.GetCallInterfaceDescriptor().GetRegisterParameter(1));
+    __ Move(stub.GetCallInterfaceDescriptor().GetRegisterParameter(2),
+            SmiFromSlot(slot));
     __ CallStub(&stub);
   } else {
     __ Push(info);
+    __ EmitLoadTypeFeedbackVector(result_register());
+    __ Push(result_register());
+    __ Push(SmiFromSlot(slot));
     __ CallRuntime(pretenure ? Runtime::kNewClosure_Tenured
                              : Runtime::kNewClosure);
   }
@@ -1300,7 +1312,7 @@ void FullCodeGenerator::VisitFunctionLiteral(FunctionLiteral* expr) {
     SetStackOverflow();
     return;
   }
-  EmitNewClosure(function_info, expr->pretenure());
+  EmitNewClosure(function_info, expr->LiteralFeedbackSlot(), expr->pretenure());
 }
 
 
@@ -1333,7 +1345,7 @@ void FullCodeGenerator::VisitNativeFunctionLiteral(
   Comment cmnt(masm_, "[ NativeFunctionLiteral");
   Handle<SharedFunctionInfo> shared =
       Compiler::GetSharedFunctionInfoForNative(expr->extension(), expr->name());
-  EmitNewClosure(shared, false);
+  EmitNewClosure(shared, expr->LiteralFeedbackSlot(), false);
 }