| ! { dg-do compile } |
| ! { dg-options "-ffrontend-optimize -faggressive-function-elimination -finline-matmul-limit=0 -Wfunction-elimination" } |
| ! Check the -ffrontend-optimize (in the absence of -O) and |
| ! -Wfunction-elimination options. |
| program main |
| implicit none |
| real, dimension(2,2) :: a, b, c, d |
| integer :: i |
| real :: x, z |
| character(60) :: line |
| real, external :: ext_func |
| interface |
| elemental function element(x) |
| real, intent(in) :: x |
| real :: elem |
| end function element |
| pure function mypure(x) |
| real, intent(in) :: x |
| integer :: mypure |
| end function mypure |
| elemental impure function elem_impure(x) |
| real, intent(in) :: x |
| real :: elem_impure |
| end function elem_impure |
| end interface |
| |
| data a /2., 3., 5., 7./ |
| data b /11., 13., 17., 23./ |
| write (unit=line, fmt='(4F7.2)') matmul(a,b) & |
| & + matmul(a,b) |
| z = sin(x) + 2.0 + sin(x) |
| print *,z |
| x = ext_func(a) + 23 + ext_func(a) ! { dg-warning "Removing call to impure function" } |
| print *,d,x |
| z = element(x) + element(x) |
| print *,z |
| i = mypure(x) - mypure(x) |
| print *,i |
| z = elem_impure(x) - elem_impure(x) ! { dg-warning "Removing call to impure function" } |
| print *,z |
| end program main |