[TypeFeedbackVector] Root literal arrays in function literals slots

test/unittests/compiler/js-create-lowering-unittest.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/compiler/js-create-lowering.h"
 #include "src/code-factory.h"
 #include "src/compilation-dependencies.h"
 #include "src/compiler/access-builder.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/js-operator.h"
@@ skipping 124 matching lines @@
 }
 
 // -----------------------------------------------------------------------------
 // JSCreateClosure
 
 TEST_F(JSCreateLoweringTest, JSCreateClosureViaInlinedAllocation) {
   Node* const context = UndefinedConstant();
   Node* const effect = graph()->start();
   Node* const control = graph()->start();
   Handle<SharedFunctionInfo> shared(isolate()->number_function()->shared());
-  Reduction r =
-      Reduce(graph()->NewNode(javascript()->CreateClosure(shared, NOT_TENURED),
-                              context, effect, control));
+
+  // Create a mock feedback vector.
+  Zone zone(isolate()->allocator(), ZONE_NAME);
+  FeedbackVectorSpec spec(&zone);
+  spec.AddCreateClosureSlot(1);
+  Handle<TypeFeedbackMetadata> metadata =
+      TypeFeedbackMetadata::New(isolate(), &spec);
+  Handle<TypeFeedbackVector> vector =
+      TypeFeedbackVector::New(isolate(), metadata);
+  DCHECK(vector->slot_count() == 1);
+  FeedbackVectorSlot slot(0);
+  VectorSlotPair pair(vector, slot);
+
+  Reduction r = Reduce(
+      graph()->NewNode(javascript()->CreateClosure(shared, pair, NOT_TENURED),
+                       context, effect, control));
   ASSERT_TRUE(r.Changed());
   EXPECT_THAT(r.replacement(),
               IsFinishRegion(IsAllocate(IsNumberConstant(JSFunction::kSize),
                                         IsBeginRegion(_), control),
                              _));
 }
 
 // -----------------------------------------------------------------------------
 // JSCreateFunctionContext
 
@@ skipping 52 matching lines @@
   EXPECT_THAT(r.replacement(),
               IsFinishRegion(IsAllocate(IsNumberConstant(Context::SizeFor(
                                             Context::MIN_CONTEXT_SLOTS + 1)),
                                         IsBeginRegion(_), control),
                              _));
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8