Implement argument definition test in the vm.

runtime/vm/il_printer.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/il_printer.h"
 
 #include "vm/intermediate_language.h"
 #include "vm/os.h"
 #include "vm/parser.h"
 
@@ skipping 167 matching lines @@
   f->Print(")");
 }
 
 
 void AssertBooleanComp::PrintOperandsTo(BufferFormatter* f) const {
   value()->PrintTo(f);
   f->Print("%s", is_eliminated() ? " eliminated" : "");
 }
 
 
+void ArgumentDefinitionTestComp::PrintOperandsTo(BufferFormatter* f) const {
+  saved_arguments_descriptor()->PrintTo(f);
+  f->Print(", ?%s @%d",
+           formal_parameter_name().ToCString(),
+           formal_parameter_index());
+}
+
+
 void ClosureCallComp::PrintOperandsTo(BufferFormatter* f) const {
   for (intptr_t i = 0; i < ArgumentCount(); ++i) {
     if (i > 0) f->Print(", ");
     ArgumentAt(i)->value()->PrintTo(f);
   }
 }
 
 
 void InstanceCallComp::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s", function_name().ToCString());
@@ skipping 610 matching lines @@
     if ((locations_ != NULL) && !locations_[i].IsInvalid()) {
       f->Print(" [");
       locations_[i].PrintTo(f);
       f->Print("]");
     }
   }
   f->Print(" }");
 }
 
 }  // namespace dart