nt # Enter a description of the change.

runtime/vm/compiler.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/compiler.h"
 
 #include "vm/assembler.h"
 
 #include "vm/ast_printer.h"
 #include "vm/block_scheduler.h"
@@ skipping 1472 matching lines @@
       while (!function.IsNull() && running_) {
         const Error& error = Error::Handle(zone,
             Compiler::CompileOptimizedFunction(thread, function));
         // TODO(srdjan): We do not expect errors while compiling optimized
         // code, any errors should have been caught when compiling
         // unoptimized code.
         // If it still happens mark function as not optimizable.
         ASSERT(error.IsNull());
         temp_function = RemoveOrNull();
         ASSERT(temp_function.raw() == function.raw());
+        // Reset to 0 so that it can be recompiled if needed.
+        function.set_usage_counter(0);
         function = LastOrNull();
       }
     }
     Thread::ExitIsolateAsHelper();
     {
       // Wait to be notified when the work queue is not empty.
       MonitorLocker ml(queue_monitor_);
       while ((queue_length() == 0) && running_) {
         ml.Wait();
       }
@@ skipping 78 matching lines @@
           thread->zone(), GrowableObjectArray::New()));
       start_task = true;
     }
   }
   if (start_task) {
     Dart::thread_pool()->Run(isolate->background_compiler());
   }
 }
 
 }  // namespace dart