Fix crash during parallel moves.

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"
 
 namespace dart {
@@ skipping 449 matching lines @@
   if (HasICData()) {
     PrintICData(f, *ic_data());
   }
 }
 
 
 void ParallelMoveInstr::PrintTo(BufferFormatter* f) const {
   f->Print("    %s ", DebugName());
   for (intptr_t i = 0; i < moves_.length(); i++) {
     if (i != 0) f->Print(", ");
-    f->Print("%s = %s", moves_[i].dest().Name(), moves_[i].src().Name());
+    f->Print("%s = %s", moves_[i]->dest().Name(), moves_[i]->src().Name());
   }
 }
 
 
 void FlowGraphVisualizer::Print(const char* format, ...) {
   char str[1000];
   BufferFormatter f(str, sizeof(str));
   f.Print("%*s", 2 * indent_, "");
   va_list args;
   va_start(args, format);
@@ skipping 245 matching lines @@
     if (i > 0) f->Print(", ");
     values_[i]->PrintTo(f);
     if ((i < locations_.length()) && !locations_[i].IsInvalid()) {
       f->Print(" [%s]", locations_[i].Name());
     }
   }
   f->Print(" }");
 }
 
 }  // namespace dart