Teach TurboFan to call vector-based ICs.

src/type-feedback-vector.h

 // Copyright 2014 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.
 
 #ifndef V8_TYPE_FEEDBACK_VECTOR_H_
 #define V8_TYPE_FEEDBACK_VECTOR_H_
 
 #include "src/checks.h"
 #include "src/elements-kind.h"
 #include "src/heap/heap.h"
@@ skipping 31 matching lines @@
   static inline Handle<Object> MonomorphicArraySentinel(
       Isolate* isolate, ElementsKind elements_kind);
 
   // A raw version of the uninitialized sentinel that's safe to read during
   // garbage collection (e.g., for patching the cache).
   static inline Object* RawUninitializedSentinel(Heap* heap);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(TypeFeedbackVector);
 };
+
+// A FeedbackNode is the combination of a TypeFeedbackVector and a slot.
+// Derived classes customize the update and retrieval of feedback.
+class FeedbackNode {
+ public:
+  FeedbackNode(Handle<TypeFeedbackVector> vector, int slot)
+      : vector_(vector), slot_(slot) {}
+  virtual ~FeedbackNode() {}
+
+  Handle<TypeFeedbackVector> vector() const { return vector_; }
+  int slot() const { return slot_; }
+
+ private:
+  Handle<TypeFeedbackVector> vector_;
+  int slot_;
+};
+
+
+bool operator==(FeedbackNode const&, FeedbackNode const&);
+bool operator!=(FeedbackNode const&, FeedbackNode const&);
+
+size_t hash_value(FeedbackNode const&);
+
+
+class LoadICFeedbackNode : public FeedbackNode {
+ public:
+  LoadICFeedbackNode(Handle<TypeFeedbackVector> vector, int slot)
+      : FeedbackNode(vector, slot) {}
+};
+
+
+class KeyedLoadICFeedbackNode : public FeedbackNode {
+ public:
+  KeyedLoadICFeedbackNode(Handle<TypeFeedbackVector> vector, int slot)
+      : FeedbackNode(vector, slot) {}
+};
 }
 }  // namespace v8::internal
 
 #endif  // V8_TRANSITIONS_H_