Teach TurboFan to call vector-based ICs.

src/type-feedback-vector.cc

 // 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.
 
 #include "src/v8.h"
 
+#include "src/base/functional.h"
 #include "src/objects.h"
 #include "src/type-feedback-vector-inl.h"
 
 namespace v8 {
 namespace internal {
 
+bool operator==(FeedbackNode const& lhs, FeedbackNode const& rhs) {
+  return lhs.slot() == rhs.slot() && lhs.vector().is_identical_to(rhs.vector());
+}
+
+
+bool operator!=(FeedbackNode const& lhs, FeedbackNode const& rhs) {
+  return !(lhs == rhs);
+}
+
+
+size_t hash_value(FeedbackNode const& p) {
+  // TODO(mvstanton): include the vector in the hash.
+  base::hash<int> h;
+  return h(p.slot());
+}
+
+
 // static
 Handle<TypeFeedbackVector> TypeFeedbackVector::Copy(
     Isolate* isolate, Handle<TypeFeedbackVector> vector) {
   Handle<TypeFeedbackVector> result;
   result = Handle<TypeFeedbackVector>::cast(
       isolate->factory()->CopyFixedArray(Handle<FixedArray>::cast(vector)));
   return result;
 }
 }
 }  // namespace v8::internal