[turbofan] WIP Support vector IC feedback in the JSTypeFeedbackTable.

src/compiler/js-type-feedback.h

 // Copyright 2015 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_COMPILER_JS_TYPE_FEEDBACK_H_
 #define V8_COMPILER_JS_TYPE_FEEDBACK_H_
 
 #include "src/utils.h"
 
 #include "src/compiler/graph-reducer.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/node-aux-data.h"
 #include "src/compiler/simplified-operator.h"
 
 namespace v8 {
 namespace internal {
 
 class TypeFeedbackOracle;
 class SmallMapList;
 class CompilationDependencies;
 
 namespace compiler {
 
 // Stores type feedback information for nodes in the graph in a separate
 // data structure.
 class JSTypeFeedbackTable : public ZoneObject {
  public:
   explicit JSTypeFeedbackTable(Zone* zone);
 
-  // TODO(titzer): support recording the feedback vector slot.
-
   void Record(Node* node, TypeFeedbackId id);
+  void Record(Node* node, FeedbackVectorICSlot slot);
 
  private:
   friend class JSTypeFeedbackSpecializer;
   typedef std::map<NodeId, TypeFeedbackId, std::less<NodeId>,
                    zone_allocator<TypeFeedbackId> > TypeFeedbackIdMap;
+  typedef std::map<NodeId, FeedbackVectorICSlot, std::less<NodeId>,
+                   zone_allocator<FeedbackVectorICSlot> >
+      FeedbackVectorICSlotMap;
 
-  TypeFeedbackIdMap map_;
+  TypeFeedbackIdMap type_feedback_id_map_;
+  FeedbackVectorICSlotMap feedback_vector_ic_slot_map_;
 
-  TypeFeedbackId find(Node* node) {
-    TypeFeedbackIdMap::const_iterator it = map_.find(node->id());
-    return it == map_.end() ? TypeFeedbackId::None() : it->second;
+  TypeFeedbackId FindTypeFeedbackId(Node* node) {
+    TypeFeedbackIdMap::const_iterator it =
+        type_feedback_id_map_.find(node->id());
+    return it == type_feedback_id_map_.end() ? TypeFeedbackId::None()
+                                             : it->second;
+  }
+
+  FeedbackVectorICSlot FindFeedbackVectorICSlot(Node* node) {
+    FeedbackVectorICSlotMap::const_iterator it =
+        feedback_vector_ic_slot_map_.find(node->id());
+    return it == feedback_vector_ic_slot_map_.end()
+               ? FeedbackVectorICSlot::Invalid()
+               : it->second;
   }
 };
 
 
 // Specializes a graph to the type feedback recorded in the
 // {js_type_feedback} provided to the constructor.
 class JSTypeFeedbackSpecializer : public AdvancedReducer {
  public:
   JSTypeFeedbackSpecializer(Editor* editor, JSGraph* jsgraph,
                             JSTypeFeedbackTable* js_type_feedback,
@@ skipping 29 matching lines @@
 
   TypeFeedbackOracle* oracle() { return oracle_; }
   Graph* graph() { return jsgraph_->graph(); }
   JSGraph* jsgraph() { return jsgraph_; }
   CommonOperatorBuilder* common() { return jsgraph_->common(); }
   SimplifiedOperatorBuilder* simplified() { return &simplified_; }
 
   void BuildMapCheck(Node* receiver, Handle<Map> map, bool smi_check,
                      Node* effect, Node* control, Node** success, Node** fail);
 
-  void GatherReceiverTypes(Node* receiver, Node* effect, TypeFeedbackId id,
-                           Handle<Name> property, SmallMapList* maps);
-
   Node* GetFrameStateBefore(Node* node);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif