Fix issue 5275: The VM must always generate the most compact form of an integer (Smi, Mint or Bigin…

runtime/vm/isolate.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/isolate.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/json.h"
 #include "lib/mirrors.h"
@@ skipping 252 matching lines @@
   if (FLAG_trace_deoptimization_verbose) {
     OS::PrintErr("materializing double at %"Px": %g\n",
                  reinterpret_cast<uword>(slot()), value());
   }
 }
 
 
 void DeferredMint::Materialize() {
   RawMint** mint_slot = reinterpret_cast<RawMint**>(slot());
   ASSERT(!Smi::IsValid64(value()));
-  *mint_slot = Mint::New(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());
   }
 }
 
 
 void DeferredFloat32x4::Materialize() {
   RawFloat32x4** float32x4_slot = reinterpret_cast<RawFloat32x4**>(slot());
@@ skipping 871 matching lines @@
   return func.raw();
 }
 
 
 void IsolateSpawnState::Cleanup() {
   SwitchIsolateScope switch_scope(isolate());
   Dart::ShutdownIsolate();
 }
 
 }  // namespace dart