diff -r aba91a731143 -r 1d7922586cf6 src/share/vm/c1/c1_InstructionPrinter.cpp
--- a/src/share/vm/c1/c1_InstructionPrinter.cpp	Mon Jul 23 13:04:59 2012 -0700
+++ b/src/share/vm/c1/c1_InstructionPrinter.cpp	Tue Jul 24 10:51:00 2012 -0700
@@ -137,12 +137,16 @@
       ciMethod* m = (ciMethod*)value;
       output()->print("<method %s.%s>", m->holder()->name()->as_utf8(), m->name()->as_utf8());
     } else {
-      output()->print("<object " PTR_FORMAT ">", value->constant_encoding());
+      output()->print("<object " PTR_FORMAT " klass=", value->constant_encoding());
+      print_klass(value->klass());
+      output()->print(">");
     }
   } else if (type->as_InstanceConstant() != NULL) {
     ciInstance* value = type->as_InstanceConstant()->value();
     if (value->is_loaded()) {
-      output()->print("<instance " PTR_FORMAT ">", value->constant_encoding());
+      output()->print("<instance " PTR_FORMAT " klass=", value->constant_encoding());
+      print_klass(value->klass());
+      output()->print(">");
     } else {
       output()->print("<unloaded instance " PTR_FORMAT ">", value);
     }
@@ -453,6 +457,14 @@
 }
 
 
+void InstructionPrinter::do_TypeCast(TypeCast* x) {
+  output()->print("type_cast(");
+  print_value(x->obj());
+  output()->print(") ");
+  print_klass(x->declared_type()->klass());
+}
+
+
 void InstructionPrinter::do_Invoke(Invoke* x) {
   if (x->receiver() != NULL) {
     print_value(x->receiver());