[FeedbackVector] Infrastructure for literal arrays in the vector.

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"
 #include "src/compiler/machine-operator.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/operator-properties.h"
 #include "src/isolate-inl.h"
+#include "src/type-feedback-vector.h"
 #include "test/unittests/compiler/compiler-test-utils.h"
 #include "test/unittests/compiler/graph-unittest.h"
 #include "test/unittests/compiler/node-test-utils.h"
 #include "testing/gmock-support.h"
 
 using testing::_;
 using testing::BitEq;
 using testing::IsNaN;
 
 namespace v8 {
@@ skipping 111 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. It just has to be an array with an array
+  // in slot 0.
+  Handle<FixedArray> array = isolate()->factory()->NewFixedArray(
+      TypeFeedbackVector::kReservedIndexCount + 1);
+  array->set_map_no_write_barrier(
+      isolate()->heap()->type_feedback_vector_map());
+  Handle<TypeFeedbackVector> vector = Handle<TypeFeedbackVector>::cast(array);
+  FeedbackVectorSlot slot(0);
+  vector->Set(slot, *vector);
+  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