Always reset allowed OSR nesting level when reverting interrupt code patches.

src/runtime.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 8247 matching lines @@
     function->PrintName();
     PrintF("]\n");
   }
   InterruptStub interrupt_stub;
   Handle<Code> interrupt_code = interrupt_stub.GetCode(isolate);
   Handle<Code> replacement_code = isolate->builtins()->OnStackReplacement();
   Deoptimizer::RevertInterruptCode(*unoptimized,
                                    *interrupt_code,
                                    *replacement_code);
 
-  // Allow OSR only at nesting level zero again.
-  unoptimized->set_allow_osr_at_loop_nesting_level(0);
-
   // If the optimization attempt succeeded, return the AST id tagged as a
   // smi. This tells the builtin that we need to translate the unoptimized
   // frame to an optimized one.
   if (succeeded) {
     ASSERT(function->code()->kind() == Code::OPTIMIZED_FUNCTION);
     return Smi::FromInt(ast_id.ToInt());
   } else {
     if (function->IsMarkedForLazyRecompilation()) {
       function->ReplaceCode(function->shared()->code());
     }
@@ skipping 5375 matching lines @@
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     isolate->counters()->gc_last_resort_from_js()->Increment();
     isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags,
                                        "Runtime::PerformGC");
   }
 }
 
 
 } }  // namespace v8::internal