handle the special snowflakes that are Integer Indexed Exotic objects

src/hydrogen.cc

 // Copyright 2013 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/hydrogen.h"
 
 #include <sstream>
 
 #include "src/v8.h"
 
@@ skipping 5248 matching lines @@
 HOptimizedGraphBuilder::LookupGlobalProperty(Variable* var, LookupIterator* it,
                                              PropertyAccessType access_type) {
   if (var->is_this() || !current_info()->has_global_object()) {
     return kUseGeneric;
   }
 
   switch (it->state()) {
     case LookupIterator::ACCESSOR:
     case LookupIterator::ACCESS_CHECK:
     case LookupIterator::INTERCEPTOR:
+    case LookupIterator::INTEGER_INDEXED_EXOTIC:
     case LookupIterator::NOT_FOUND:
       return kUseGeneric;
     case LookupIterator::DATA:
       if (access_type == STORE && it->IsReadOnly()) return kUseGeneric;
       return kUseCell;
     case LookupIterator::JSPROXY:
     case LookupIterator::TRANSITION:
       UNREACHABLE();
   }
   UNREACHABLE();
@@ skipping 8157 matching lines @@
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 } }  // namespace v8::internal