A computer implemented method, system, and computer usable program code for simplifying compiler-generated software code by creating a stub routine for checking storage contiguity. A stub routine is generated for a subroutine. The stub routine is used to determine whether data is contiguous for the subroutine. A subroutine call in the code is replaced with a stub routine call for the stub routine. The subroutine call has at least one argument. The stub routine call includes each argument for the subroutine call. The code is executed. The stub routine is called by the stub routine call to determine whether data is contiguous for the subroutine.