Do not call memset() to initialize StubCache.

src/stub-cache.cc

 // Copyright 2012 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 27 matching lines @@
 
 namespace v8 {
 namespace internal {
 
 // -----------------------------------------------------------------------
 // StubCache implementation.
 
 
 StubCache::StubCache(Isolate* isolate) : isolate_(isolate) {
   ASSERT(isolate == Isolate::Current());
-  memset(primary_, 0, sizeof(primary_[0]) * StubCache::kPrimaryTableSize);
-  memset(secondary_, 0, sizeof(secondary_[0]) * StubCache::kSecondaryTableSize);
 }
 
 
-void StubCache::Initialize(bool create_heap_objects) {
+void StubCache::Initialize() {
   ASSERT(IsPowerOf2(kPrimaryTableSize));
   ASSERT(IsPowerOf2(kSecondaryTableSize));
-  if (create_heap_objects) {
-    HandleScope scope;
-    Code* empty = isolate_->builtins()->builtin(Builtins::kIllegal);
-    for (int i = 0; i < kPrimaryTableSize; i++) {
-      primary_[i].key = heap()->empty_string();
-      primary_[i].value = empty;
-    }
-    for (int j = 0; j < kSecondaryTableSize; j++) {
-      secondary_[j].key = heap()->empty_string();
-      secondary_[j].value = empty;
-    }
-  }
+  Clear();
 }
 
 
 Code* StubCache::Set(String* name, Map* map, Code* code) {
   // Get the flags from the code.
   Code::Flags flags = Code::RemoveTypeFromFlags(code->flags());
 
   // Validate that the name does not move on scavenge, and that we
   // can use identity checks instead of string equality checks.
   ASSERT(!heap()->InNewSpace(name));
@@ skipping 1455 matching lines @@
           Handle<FunctionTemplateInfo>(
               FunctionTemplateInfo::cast(signature->receiver()));
     }
   }
 
   is_simple_api_call_ = true;
 }
 
 
 } }  // namespace v8::internal