Simplify feedback vector creation and store in SharedFunctionInfo.

src/feedback-slots.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 17 matching lines @@
 #ifndef V8_FEEDBACK_SLOTS_H_
 #define V8_FEEDBACK_SLOTS_H_
 
 #include "v8.h"
 
 #include "isolate.h"
 
 namespace v8 {
 namespace internal {
 
-enum ComputablePhase {
-  DURING_PARSE,
-  AFTER_SCOPING
-};
-
-
 class FeedbackSlotInterface {
  public:
   static const int kInvalidFeedbackSlot = -1;
 
   virtual ~FeedbackSlotInterface() {}
 
-  // When can we ask how many feedback slots are necessary?
-  virtual ComputablePhase GetComputablePhase() = 0;
-  virtual int ComputeFeedbackSlotCount(Isolate* isolate) = 0;
+  virtual int ComputeFeedbackSlotCount() = 0;
   virtual void SetFirstFeedbackSlot(int slot) = 0;
 };
 
-
-class DeferredFeedbackSlotProcessor {
- public:
-  DeferredFeedbackSlotProcessor()
-    : slot_nodes_(NULL),
-      slot_count_(0) { }
-
-  void add_slot_node(Zone* zone, FeedbackSlotInterface* slot) {
-    if (slot->GetComputablePhase() == DURING_PARSE) {
-      // No need to add to the list
-      int count = slot->ComputeFeedbackSlotCount(zone->isolate());
-      slot->SetFirstFeedbackSlot(slot_count_);
-      slot_count_ += count;
-    } else {
-      if (slot_nodes_ == NULL) {
-        slot_nodes_ = new(zone) ZoneList<FeedbackSlotInterface*>(10, zone);
-      }
-      slot_nodes_->Add(slot, zone);
-    }
-  }
-
-  void ProcessFeedbackSlots(Isolate* isolate) {
-    // Scope analysis must have been done.
-    if (slot_nodes_ == NULL) {
-      return;
-    }
-
-    int current_slot = slot_count_;
-    for (int i = 0; i < slot_nodes_->length(); i++) {
-      FeedbackSlotInterface* slot_interface = slot_nodes_->at(i);
-      int count = slot_interface->ComputeFeedbackSlotCount(isolate);
-      if (count > 0) {
-        slot_interface->SetFirstFeedbackSlot(current_slot);
-        current_slot += count;
-      }
-    }
-
-    slot_count_ = current_slot;
-    slot_nodes_->Clear();
-  }
-
-  int slot_count() {
-    ASSERT(slot_count_ >= 0);
-    return slot_count_;
-  }
-
- private:
-  ZoneList<FeedbackSlotInterface*>* slot_nodes_;
-  int slot_count_;
-};
-
-
 } }  // namespace v8::internal
 
 #endif  // V8_FEEDBACK_SLOTS_H_