[DebugInfo][flang] DISubrange support for fortran assumed size array
This is needed to support assumed size array of fortran which can have missing upperBound/count
, contrary to current DISubrange support.
subroutine sub (array1, array2)
integer :: array1 (*) integer :: array2 (4:9, 10:*) array1(7:8) = 9 array2(5, 10) = 10
Now the validation check is relaxed for fortran.
Reviewed By: aprantl
Differential Revision: https://reviews.llvm.org/D87500