Fix product run

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 1657 matching lines @@
 
 
 void BackgroundCompiler::Run() {
   while (running_) {
     // Maybe something is already in the queue, check first before waiting
     // to be notified.
     bool result = Thread::EnterIsolateAsHelper(isolate_, Thread::kCompilerTask);
     ASSERT(result);
     {
       Thread* thread = Thread::Current();
-      Isolate* isolate = thread->isolate();
       StackZone stack_zone(thread);
       Zone* zone = stack_zone.GetZone();
       HANDLESCOPE(thread);
       Function& function = Function::Handle(zone);
       function = function_queue()->PeekFunction();
       while (running_ && !function.IsNull()) {
         // Check that we have aggregated and cleared the stats.
         ASSERT(thread->compiler_stats()->IsCleared());
         const Error& error = Error::Handle(zone,
             Compiler::CompileOptimizedFunction(thread,
                                                function,
                                                Compiler::kNoOSRDeoptId));
         // TODO(srdjan): We do not expect errors while compiling optimized
         // code, any errors should have been caught when compiling
         // unoptimized code. Any issues while optimizing are flagged by
         // making the result invalid.
         ASSERT(error.IsNull());
+#ifndef PRODUCT
+        Isolate* isolate = thread->isolate();
         // We cannot aggregate stats if isolate is shutting down.
         if (isolate->HasMutatorThread()) {
           isolate->aggregate_compiler_stats()->Add(*thread->compiler_stats());
         }
         thread->compiler_stats()->Clear();
+#endif  // PRODUCT
         QueueElement* qelem = function_queue()->Remove();
         delete qelem;
         function = function_queue()->PeekFunction();
       }
     }
     Thread::ExitIsolateAsHelper();
     {
       // Wait to be notified when the work queue is not empty.
       MonitorLocker ml(queue_monitor_);
       while (function_queue()->IsEmpty() && running_) {
@@ skipping 199 matching lines @@
 }
 
 
 void BackgroundCompiler::EnsureInit(Thread* thread) {
   UNREACHABLE();
 }
 
 #endif  // DART_PRECOMPILED_RUNTIME
 
 }  // namespace dart