Store pointer instead of reference to LocalVariable in ast and flow graph.

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 218 matching lines @@
 void StaticCallComp::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s", String::Handle(function().name()).ToCString());
   for (intptr_t i = 0; i < ArgumentCount(); ++i) {
     if (i > 0) f->Print(", ");
     ArgumentAt(i)->value()->PrintTo(f);
   }
 }
 
 
 void LoadLocalComp::PrintOperandsTo(BufferFormatter* f) const {
-  f->Print("%s lvl:%d", local().name().ToCString(), context_level());
+  f->Print("%s lvl:%d", local()->name().ToCString(), context_level());
 }
 
 
 void StoreLocalComp::PrintOperandsTo(BufferFormatter* f) const {
-  f->Print("%s, ", local().name().ToCString());
+  f->Print("%s, ", local()->name().ToCString());
   value()->PrintTo(f);
   f->Print(", lvl: %d", context_level());
 }
 
 
 void NativeCallComp::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s", native_name().ToCString());
 }
 
 
@@ skipping 110 matching lines @@
 }
 
 
 void AllocateContextComp::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%d", num_context_variables());
 }
 
 
 void CatchEntryComp::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s, %s",
-           exception_var().name().ToCString(),
-           stacktrace_var().name().ToCString());
+           exception_var()->name().ToCString(),
+           stacktrace_var()->name().ToCString());
 }
 
 
 void BinaryOpComp::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s, ", Token::Str(op_kind()));
   left()->PrintTo(f);
   f->Print(", ");
   right()->PrintTo(f);
 }
 
@@ skipping 400 matching lines @@
     if ((i < locations_.length()) && !locations_[i].IsInvalid()) {
       f->Print(" [");
       locations_[i].PrintTo(f);
       f->Print("]");
     }
   }
   f->Print(" }");
 }
 
 }  // namespace dart