Adding Smi support to Add, Sub, Mul, and Bitwise

src/types.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 465 matching lines @@
 
 Type* Type::Optional(Handle<Type> type) {
   return type->is_bitset()
       ? from_bitset(type->as_bitset() | kUndefined)
       : Union(type, Undefined()->handle_via_isolate_of(*type));
 }
 
 
 Representation Representation::FromType(Handle<Type> type) {
   if (type->Is(Type::None())) return Representation::None();
+  if (type->Is(Type::Smi())) return Representation::Smi();
   if (type->Is(Type::Signed32())) return Representation::Integer32();
   if (type->Is(Type::Number())) return Representation::Double();
   return Representation::Tagged();
 }
 
 
 #ifdef OBJECT_PRINT
 void Type::TypePrint() {
   TypePrint(stdout);
   PrintF(stdout, "\n");
@@ skipping 32 matching lines @@
       if (i > 0) PrintF(out, ",");
       type_i->TypePrint(out);
     }
     PrintF(out, "}");
   }
 }
 #endif
 
 
 } }  // namespace v8::internal