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! { dg-do run }
! { dg-additional-options "-fno-inline -fno-ipa-modref -fdump-tree-optimized -fdump-tree-original" }
!
! PR fortran/41453
! Check that the INTENT(OUT) attribute causes one clobber to be emitted in
! the caller before each call to FOO in the *.original dump, and the
! initialization constants to be optimized away in the *.optimized dump,
! in the case of SAVE variables.
module x
implicit none
contains
subroutine foo(a)
integer, intent(out) :: a
a = 42
end subroutine foo
end module x
program main
use x
implicit none
integer :: c = 0
! implicit SAVE attribute
c = 123456789
call foo(c)
if (c /= 42) stop 1
! explicit SAVE attribute
call check_save_explicit
contains
subroutine check_save_explicit
integer, save :: d
d = 987654321
call foo(d)
if (d /= 42) stop 2
end subroutine check_save_explicit
end program main
! { dg-final { scan-tree-dump-times "CLOBBER" 2 "original" } }
! { dg-final { scan-tree-dump "c = {CLOBBER};" "original" } }
! { dg-final { scan-tree-dump "d = {CLOBBER};" "original" } }
! { dg-final { scan-tree-dump-not "123456789" "optimized" { target __OPTIMIZE__ } } }
! { dg-final { scan-tree-dump-not "987654321" "optimized" { target __OPTIMIZE__ } } }
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