[runtime] Force internalize names used before lookup in in DescriptorArray and TransitionArray

src/heap/heap.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_HEAP_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 #include <map>
 
@@ skipping 2462 matching lines @@
 
  private:
   DescriptorLookupCache() {
     for (int i = 0; i < kLength; ++i) {
       keys_[i].source = NULL;
       keys_[i].name = NULL;
       results_[i] = kAbsent;
     }
   }
 
-  static int Hash(Object* source, Name* name) {
-    // Uses only lower 32 bits if pointers are larger.
-    uint32_t source_hash =
-        static_cast<uint32_t>(reinterpret_cast<uintptr_t>(source)) >>
-        kPointerSizeLog2;
-    uint32_t name_hash =
-        static_cast<uint32_t>(reinterpret_cast<uintptr_t>(name)) >>
-        kPointerSizeLog2;
-    return (source_hash ^ name_hash) % kLength;
-  }
+  static inline int Hash(Object* source, Name* name);
 
   static const int kLength = 64;
   struct Key {
     Map* source;
     Name* name;
   };
 
   Key keys_[kLength];
   int results_[kLength];
 
@@ skipping 123 matching lines @@
   friend class LargeObjectSpace;
   friend class NewSpace;
   friend class PagedSpace;
   DISALLOW_COPY_AND_ASSIGN(AllocationObserver);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_HEAP_H_