Flesh out vector ic state query and set mechanisms.

src/type-info.h

 // Copyright 2012 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_INFO_H_
 #define V8_TYPE_INFO_H_
 
 #include "src/allocation.h"
 #include "src/globals.h"
 #include "src/types.h"
 #include "src/zone-inl.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
 class SmallMapList;
 
 
 class TypeFeedbackOracle: public ZoneObject {
  public:
   TypeFeedbackOracle(Handle<Code> code,
                      Handle<TypeFeedbackVector> feedback_vector,
                      Handle<Context> native_context, Zone* zone);
 
   bool LoadIsUninitialized(TypeFeedbackId id);
+  bool LoadIsUninitialized(FeedbackVectorICSlot slot);
   bool StoreIsUninitialized(TypeFeedbackId id);
   bool CallIsUninitialized(FeedbackVectorICSlot slot);
   bool CallIsMonomorphic(FeedbackVectorICSlot slot);
   bool KeyedArrayCallIsHoley(TypeFeedbackId id);
   bool CallNewIsMonomorphic(FeedbackVectorSlot slot);
 
   // TODO(1571) We can't use ForInStatement::ForInType as the return value due
   // to various cycles in our headers.
   // TODO(rossberg): once all oracle access is removed from ast.cc, it should
   // be possible.
   byte ForInType(FeedbackVectorSlot feedback_vector_slot);
 
   void GetStoreModeAndKeyType(TypeFeedbackId id,
                               KeyedAccessStoreMode* store_mode,
                               IcCheckType* key_type);
 
   void PropertyReceiverTypes(TypeFeedbackId id, Handle<String> name,
                              SmallMapList* receiver_types);
+  void PropertyReceiverTypes(FeedbackVectorICSlot slot, Handle<String> name,
+                             SmallMapList* receiver_types);
   void KeyedPropertyReceiverTypes(TypeFeedbackId id,
                                   SmallMapList* receiver_types,
                                   bool* is_string);
+  void KeyedPropertyReceiverTypes(FeedbackVectorICSlot slot,
+                                  SmallMapList* receiver_types,
+                                  bool* is_string);
   void AssignmentReceiverTypes(TypeFeedbackId id,
                                Handle<String> name,
                                SmallMapList* receiver_types);
   void KeyedAssignmentReceiverTypes(TypeFeedbackId id,
                                     SmallMapList* receiver_types,
                                     KeyedAccessStoreMode* store_mode,
                                     IcCheckType* key_type);
   void CountReceiverTypes(TypeFeedbackId id,
                           SmallMapList* receiver_types);
 
   void CollectReceiverTypes(TypeFeedbackId id,
                             SmallMapList* types);
+  template <class T>
+  void CollectReceiverTypes(T* obj, SmallMapList* types);
 
   static bool CanRetainOtherContext(Map* map, Context* native_context);
   static bool CanRetainOtherContext(JSFunction* function,
                                     Context* native_context);
 
   Handle<JSFunction> GetCallTarget(FeedbackVectorICSlot slot);
   Handle<AllocationSite> GetCallAllocationSite(FeedbackVectorICSlot slot);
   Handle<JSFunction> GetCallNewTarget(FeedbackVectorSlot slot);
   Handle<AllocationSite> GetCallNewAllocationSite(FeedbackVectorSlot slot);
 
@@ skipping 21 matching lines @@
   Type* CountType(TypeFeedbackId id);
 
   Zone* zone() const { return zone_; }
   Isolate* isolate() const { return zone_->isolate(); }
 
  private:
   void CollectReceiverTypes(TypeFeedbackId id,
                             Handle<String> name,
                             Code::Flags flags,
                             SmallMapList* types);
+  template <class T>
+  void CollectReceiverTypes(T* obj, Handle<String> name, Code::Flags flags,
+                            SmallMapList* types);
+
+  // Returns true if there is at least one string map and if
+  // all maps are string maps.
+  bool HasOnlyStringMaps(SmallMapList* receiver_types);
 
   void SetInfo(TypeFeedbackId id, Object* target);
 
   void BuildDictionary(Handle<Code> code);
   void GetRelocInfos(Handle<Code> code, ZoneList<RelocInfo>* infos);
   void CreateDictionary(Handle<Code> code, ZoneList<RelocInfo>* infos);
   void RelocateRelocInfos(ZoneList<RelocInfo>* infos,
                           Code* old_code,
                           Code* new_code);
   void ProcessRelocInfos(ZoneList<RelocInfo>* infos);
@@ skipping 12 matching lines @@
   Zone* zone_;
   Handle<UnseededNumberDictionary> dictionary_;
   Handle<TypeFeedbackVector> feedback_vector_;
 
   DISALLOW_COPY_AND_ASSIGN(TypeFeedbackOracle);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_TYPE_INFO_H_