public static RegisterSpec make(int reg, TypeBearer type) {
    return intern(reg, type, null);
  }
Returns an instance for the given register number and type, with no variable info. This method
is allowed to return shared instances (but doesn't necessarily do so).

@param reg {@code >= 0;} the register number
@param type {@code non-null;} the type (or possibly actual value) which is loaded from or
    stored to the indicated register
@return {@code non-null;} an appropriately-constructed instance
android/android_framework/dex-maker/src/main/java/com/android/dx/rop/code/RegisterSpec.java