--- old/src/share/vm/runtime/thread.hpp	2016-05-10 14:10:39.000000000 +0200
+++ new/src/share/vm/runtime/thread.hpp	2016-05-10 14:10:39.000000000 +0200
@@ -928,6 +928,9 @@
   // Specifies if the DeoptReason for the last uncommon trap was Reason_transfer_to_interpreter
   bool      _pending_transfer_to_interpreter;
 
+  // Guard for re-entrant call to JVMCIRuntime::adjust_comp_level
+  bool      _adjusting_comp_level;
+
   // An object that JVMCI compiled code can use to further describe and
   // uniquely identify the  speculative optimization guarded by the uncommon trap
   oop       _pending_failed_speculation;
@@ -1316,6 +1319,8 @@
 #if INCLUDE_JVMCI
   int  pending_deoptimization() const             { return _pending_deoptimization; }
   oop  pending_failed_speculation() const         { return _pending_failed_speculation; }
+  bool adjusting_comp_level() const               { return _adjusting_comp_level; }
+  void set_adjusting_comp_level(bool b)           { _adjusting_comp_level = b; }
   bool has_pending_monitorenter() const           { return _pending_monitorenter; }
   void set_pending_monitorenter(bool b)           { _pending_monitorenter = b; }
   void set_pending_deoptimization(int reason)     { _pending_deoptimization = reason; }