MIPS: Fix NaN value inconsistency with snapshots (alternate implementation).

src/isolate.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 1855 matching lines @@
   stub_cache_->Initialize();
 
   // Finish initialization of ThreadLocal after deserialization is done.
   clear_pending_exception();
   clear_pending_message();
   clear_scheduled_exception();
 
   // Deserializing may put strange things in the root array's copy of the
   // stack guard.
   heap_.SetStackLimits();
+#ifdef __mips__
+  // Reset NaN value which is incorrect for MIPS when snapshot is generated
+  // on simulator.
+  if(des != NULL) {
+    heap_.nan_value()->set_value(OS::nan_value());
+  }
+#endif
 
   deoptimizer_data_ = new DeoptimizerData;
   runtime_profiler_ = new RuntimeProfiler(this);
   runtime_profiler_->SetUp();
 
   // If we are deserializing, log non-function code objects and compiled
   // functions found in the snapshot.
   if (des != NULL && (FLAG_log_code || FLAG_ll_prof)) {
     HandleScope scope;
     LOG(this, LogCodeObjects());
@@ skipping 87 matching lines @@
 
 #ifdef DEBUG
 #define ISOLATE_FIELD_OFFSET(type, name, ignored)                       \
 const intptr_t Isolate::name##_debug_offset_ = OFFSET_OF(Isolate, name##_);
 ISOLATE_INIT_LIST(ISOLATE_FIELD_OFFSET)
 ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET)
 #undef ISOLATE_FIELD_OFFSET
 #endif
 
 } }  // namespace v8::internal