Use range information for optimizing integer boxing and fix bug in range analysis.

runtime/vm/deferred_objects.cc

 // Copyright (c) 2013, 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/deferred_objects.h"
 
 #include "vm/deopt_instructions.h"
 #include "vm/flags.h"
 #include "vm/object.h"
 
 namespace dart {
 
 DECLARE_FLAG(bool, trace_deoptimization_verbose);
 
 
 void DeferredDouble::Materialize(DeoptContext* deopt_context) {
   RawDouble** double_slot = reinterpret_cast<RawDouble**>(slot());
   *double_slot = Double::New(value());
 
   if (FLAG_trace_deoptimization_verbose) {
     OS::PrintErr("materializing double at %" Px ": %g\n",
                  reinterpret_cast<uword>(slot()), value());
   }
 }
 
 
 void DeferredMint::Materialize(DeoptContext* deopt_context) {
   RawMint** mint_slot = reinterpret_cast<RawMint**>(slot());
-  ASSERT(!Smi::IsValid64(value()));
+  ASSERT(!Smi::IsValid(value()));
   Mint& mint = Mint::Handle();
   mint ^= Integer::New(value());
   *mint_slot = mint.raw();
 
   if (FLAG_trace_deoptimization_verbose) {
     OS::PrintErr("materializing mint at %" Px ": %" Pd64 "\n",
                  reinterpret_cast<uword>(slot()), value());
   }
 }
 
@@ skipping 101 matching lines @@
                      offset.Value(),
                      value.ToCString());
       }
     }
   }
 
   object_ = &obj;
 }
 
 }  // namespace dart