Caching of Template Instantiations

[Nordlöw via Digitalmars-d-learn]

Does DMD cache template instantiations?

That is, is it preferred to do, for instance, either

     static      if (isIntegral!T && isUnsigned!(T)) {}
     else static if (isIntegral!T && isSigned!(T)) {}

or

     enum integral = isIntegral!T;
     static      if (integral && isUnsigned!(T)) {}
     else static if (integral && isSigned!(T)) {}