[ic] Delete old KeyedLoadIC code

src/lookup-cache.h

Index: src/lookup-cache.h
diff --git a/src/lookup-cache.h b/src/lookup-cache.h
index 6da5e5b3d71af4b01f3c6e522e021ade976bec64..bf64cc00d28bafc3da4e22f67c02eaa1d7c4af94 100644
--- a/src/lookup-cache.h
+++ b/src/lookup-cache.h
@@ -52,65 +52,6 @@ class DescriptorLookupCache {
   DISALLOW_COPY_AND_ASSIGN(DescriptorLookupCache);
 };
 
-// Cache for mapping (map, property name) into field offset.
-// Cleared at startup and prior to mark sweep collection.
-class KeyedLookupCache {
- public:
-  // Lookup field offset for (map, name). If absent, -1 is returned.
-  int Lookup(Handle<Map> map, Handle<Name> name);
-
-  // Update an element in the cache.
-  void Update(Handle<Map> map, Handle<Name> name, int field_offset);
-
-  // Clear the cache.
-  void Clear();
-
-  static const int kLength = 256;
-  static const int kCapacityMask = kLength - 1;
-  static const int kMapHashShift = 5;
-  static const int kHashMask = -4;  // Zero the last two bits.
-  static const int kEntriesPerBucket = 4;
-  static const int kEntryLength = 2;
-  static const int kMapIndex = 0;
-  static const int kKeyIndex = 1;
-  static const int kNotFound = -1;
-
-  // kEntriesPerBucket should be a power of 2.
-  STATIC_ASSERT((kEntriesPerBucket & (kEntriesPerBucket - 1)) == 0);
-  STATIC_ASSERT(kEntriesPerBucket == -kHashMask);
-
- private:
-  KeyedLookupCache() {
-    for (int i = 0; i < kLength; ++i) {
-      keys_[i].map = NULL;
-      keys_[i].name = NULL;
-      field_offsets_[i] = kNotFound;
-    }
-  }
-
-  static inline int Hash(Handle<Map> map, Handle<Name> name);
-
-  // Get the address of the keys and field_offsets arrays.  Used in
-  // generated code to perform cache lookups.
-  Address keys_address() { return reinterpret_cast<Address>(&keys_); }
-
-  Address field_offsets_address() {
-    return reinterpret_cast<Address>(&field_offsets_);
-  }
-
-  struct Key {
-    Map* map;
-    Name* name;
-  };
-
-  Key keys_[kLength];
-  int field_offsets_[kLength];
-
-  friend class ExternalReference;
-  friend class Isolate;
-  DISALLOW_COPY_AND_ASSIGN(KeyedLookupCache);
-};
-
 }  // namespace internal
 }  // namespace v8