Provide more functions to CPU profiler (fix issue 858).

src/profile-generator.h

 // Copyright 2010 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 727 matching lines @@
 
   void AddEntry(Address addr, uint64_t id);
   uint64_t FindEntry(Address addr);
   void RemoveDeadEntries();
 
   static bool AddressesMatch(void* key1, void* key2) {
     return key1 == key2;
   }
 
   static uint32_t AddressHash(Address addr) {
-    return static_cast<int32_t>(reinterpret_cast<intptr_t>(addr));
+    return ComputeIntegerHash(
+        static_cast<uint32_t>(reinterpret_cast<uintptr_t>(addr)));
   }
 
   bool initial_fill_mode_;
   uint64_t next_id_;
   HashMap entries_map_;
   List<EntryInfo>* entries_;
 
   DISALLOW_COPY_AND_ASSIGN(HeapObjectsMap);
 };
 
@@ skipping 122 matching lines @@
  private:
   struct EntryInfo {
     explicit EntryInfo(HeapEntry* entry)
         : entry(entry), children_count(0), retainers_count(0) { }
     HeapEntry* entry;
     int children_count;
     int retainers_count;
   };
 
   uint32_t Hash(HeapObject* object) {
-    return static_cast<uint32_t>(reinterpret_cast<intptr_t>(object));
+    return ComputeIntegerHash(
+        static_cast<uint32_t>(reinterpret_cast<uintptr_t>(object)));
   }
   static bool HeapObjectsMatch(void* key1, void* key2) { return key1 == key2; }
 
   bool IsAlias(void* ptr) {
     return reinterpret_cast<intptr_t>(ptr) & kAliasTag;
   }
   void* MakeAlias(void* ptr) {
     return reinterpret_cast<void*>(reinterpret_cast<intptr_t>(ptr) | kAliasTag);
   }
   void* Unalias(void* ptr) {
@@ skipping 86 matching lines @@
         writer_(NULL) {
   }
   void Serialize(v8::OutputStream* stream);
 
  private:
   INLINE(static bool ObjectsMatch(void* key1, void* key2)) {
     return key1 == key2;
   }
 
   INLINE(static uint32_t ObjectHash(const void* key)) {
-    return static_cast<int32_t>(reinterpret_cast<intptr_t>(key));
+    return ComputeIntegerHash(
+        static_cast<uint32_t>(reinterpret_cast<uintptr_t>(key)));
   }
 
   void EnumerateNodes();
   int GetNodeId(HeapEntry* entry);
   int GetStringId(const char* s);
   void SerializeEdge(HeapGraphEdge* edge);
   void SerializeImpl();
   void SerializeNode(HeapEntry* entry);
   void SerializeNodes();
   void SerializeSnapshot();
@@ skipping 12 matching lines @@
   friend class HeapSnapshotJSONSerializerIterator;
 
   DISALLOW_COPY_AND_ASSIGN(HeapSnapshotJSONSerializer);
 };
 
 } }  // namespace v8::internal
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 #endif  // V8_PROFILE_GENERATOR_H_