Change hash computation for transcendental cache to use arithmetic...

src/heap.h

 // Copyright 2006-2008 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 1864 matching lines @@
   struct Element {
     uint32_t in[2];
     Object* output;
   };
   union Converter {
     double dbl;
     uint32_t integers[2];
   };
   inline static int Hash(const Converter& c) {
     uint32_t hash = (c.integers[0] ^ c.integers[1]);
-    hash ^= hash >> 16;
-    hash ^= hash >> 8;
+    hash ^= static_cast<int32_t>(hash) >> 16;
+    hash ^= static_cast<int32_t>(hash) >> 8;
     return (hash & (kCacheSize - 1));
   }
 
   static Address cache_array_address() {
     // Used to create an external reference.
     return reinterpret_cast<Address>(caches_);
   }
 
   // Allow access to the caches_ array as an ExternalReference.
   friend class ExternalReference;
@@ skipping 35 matching lines @@
 
   // To speed up scavenge collections new space string are kept
   // separate from old space strings.
   static List<Object*> new_space_strings_;
   static List<Object*> old_space_strings_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_