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

runtime/vm/service.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/service.h"
 
 #include "include/dart_api.h"
 #include "platform/globals.h"
 
 #include "vm/compiler.h"
@@ skipping 1297 matching lines @@
 
 
 static RawObject* LookupObjectId(Isolate* isolate,
                                  const char* arg,
                                  bool* error) {
   *error = false;
   if (strncmp(arg, "int-", 4) == 0) {
     arg += 4;
     int64_t value = 0;
     if (!OS::StringToInt64(arg, &value) ||
-        !Smi::IsValid64(value)) {
+        !Smi::IsValid(value)) {
       *error = true;
       return Object::null();
     }
     const Integer& obj =
         Integer::Handle(isolate, Smi::New(static_cast<intptr_t>(value)));
     return obj.raw();
 
   } else if (strcmp(arg, "bool-true") == 0) {
     return Bool::True().raw();
 
@@ skipping 844 matching lines @@
   while (current != NULL) {
     if (strcmp(name, current->name()) == 0) {
       return current;
     }
     current = current->next();
   }
   return NULL;
 }
 
 }  // namespace dart