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diff src/share/vm/c1/c1_IR.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 a61af66fc99e
children 89e0543e1737
line wrap: on
line diff
--- a/src/share/vm/c1/c1_IR.hpp	Fri Jul 31 12:04:07 2009 -0700
+++ b/src/share/vm/c1/c1_IR.hpp	Fri Jul 31 17:12:33 2009 -0700
@@ -239,15 +239,20 @@
   GrowableArray<MonitorValue*>* monitors()    { return _monitors;    }
   IRScopeDebugInfo*             caller()      { return _caller;      }
 
-  void record_debug_info(DebugInformationRecorder* recorder, int pc_offset) {
+  //Whether we should reexecute this bytecode for deopt
+  bool should_reexecute();
+
+  void record_debug_info(DebugInformationRecorder* recorder, int pc_offset, bool topmost) {
     if (caller() != NULL) {
       // Order is significant:  Must record caller first.
-      caller()->record_debug_info(recorder, pc_offset);
+      caller()->record_debug_info(recorder, pc_offset, false/*topmost*/);
     }
     DebugToken* locvals = recorder->create_scope_values(locals());
     DebugToken* expvals = recorder->create_scope_values(expressions());
     DebugToken* monvals = recorder->create_monitor_values(monitors());
-    recorder->describe_scope(pc_offset, scope()->method(), bci(), locvals, expvals, monvals);
+    // reexecute allowed only for the topmost frame
+    bool      reexecute = topmost ? should_reexecute() : false;
+    recorder->describe_scope(pc_offset, scope()->method(), bci(), reexecute, locvals, expvals, monvals);
   }
 };