Use off-heap data for type feedback in PolymorphicInstanceCallInstr

runtime/vm/il_printer.h

Index: runtime/vm/il_printer.h
diff --git a/runtime/vm/il_printer.h b/runtime/vm/il_printer.h
index 7b27a6174faad8a22e51b4d95672cb1f47e539af..b3553e4462a7a01bdb6a828c4d123ab4f250479a 100644
--- a/runtime/vm/il_printer.h
+++ b/runtime/vm/il_printer.h
@@ -62,6 +62,11 @@ class FlowGraphPrinter : public ValueObject {
   static void PrintICData(const ICData& ic_data,
                           intptr_t num_checks_to_print = kPrintAll);
 
+  // Debugging helper function. If 'num_checks_to_print' is not specified
+  // all checks will be printed.
+  static void PrintCidRangeData(const CallTargets& ic_data,
+                                intptr_t num_checks_to_print = kPrintAll);
+
   static bool ShouldPrint(const Function& function);
 
   static bool PassesFilter(const char* filter, const Function& function);