KeyedStoreIC: support non-generic handling of Symbol keys

src/ic/ic.cc

 // 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.
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/arguments.h"
 #include "src/base/bits.h"
@@ skipping 2017 matching lines @@
     return result;
   }
 
   // Check for non-string values that can be converted into an
   // internalized string directly or is representable as a smi.
   key = TryConvertKey(key, isolate());
 
   Handle<Object> store_handle;
   Handle<Code> stub = megamorphic_stub();
 
-  if (key->IsInternalizedString()) {
+  if (key->IsInternalizedString() || key->IsSymbol()) {
     ASSIGN_RETURN_ON_EXCEPTION(
         isolate(), store_handle,
-        StoreIC::Store(object, Handle<String>::cast(key), value,
+        StoreIC::Store(object, Handle<Name>::cast(key), value,
                        JSReceiver::MAY_BE_STORE_FROM_KEYED),
         Object);
     if (!is_target_set()) {
       TRACE_GENERIC_IC(isolate(), "KeyedStoreIC",
                        "unhandled internalized string key");
       TRACE_IC("StoreIC", key);
       set_target(*stub);
     }
     return store_handle;
   }
@@ skipping 917 matching lines @@
 static const Address IC_utilities[] = {
 #define ADDR(name) FUNCTION_ADDR(name),
     IC_UTIL_LIST(ADDR) NULL
 #undef ADDR
 };
 
 
 Address IC::AddressFromUtilityId(IC::UtilityId id) { return IC_utilities[id]; }
 }
 }  // namespace v8::internal