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diff src/share/vm/opto/graphKit.hpp @ 900:9987d9d5eb0e

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6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot Summary: developed a reexecute logic for the interpreter to reexecute the bytecode when deopt happens Reviewed-by: kvn, never, jrose, twisti
author cfang
date Fri, 31 Jul 2009 17:12:33 -0700
parents fc4be448891f
children 685e959d09ea
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line diff
--- a/src/share/vm/opto/graphKit.hpp	Fri Jul 31 12:04:07 2009 -0700
+++ b/src/share/vm/opto/graphKit.hpp	Fri Jul 31 17:12:33 2009 -0700
@@ -763,3 +763,16 @@
   BuildCutout(GraphKit* kit, Node* p, float prob, float cnt = COUNT_UNKNOWN);
   ~BuildCutout();
 };
+
+// Helper class to preserve the original _reexecute bit and _sp and restore
+// them back
+class PreserveReexecuteState: public StackObj {
+ protected:
+  GraphKit*                 _kit;
+  uint                      _sp;
+  JVMState::ReexecuteState  _reexecute;
+
+ public:
+  PreserveReexecuteState(GraphKit* kit);
+  ~PreserveReexecuteState();
+};