Hydrogen: fix keyed loads with string keys

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"
@@ skipping 22 matching lines @@
 
   // 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 GetLoadKeyType(TypeFeedbackId id, 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);
+                                  bool* is_string,
+                                  IcCheckType* key_type);
   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);
@@ skipping 77 matching lines @@
   Zone* zone_;
   Handle<UnseededNumberDictionary> dictionary_;
   Handle<TypeFeedbackVector> feedback_vector_;
 
   DISALLOW_COPY_AND_ASSIGN(TypeFeedbackOracle);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_TYPE_INFO_H_