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! { dg-do run { target vect_simd_clones } }
! { dg-additional-options "-msse2" { target sse2_runtime } }
! { dg-additional-options "-mavx" { target avx_runtime } }
program fibonacci
implicit none
integer,parameter :: N=30
integer :: a(0:N-1), b(0:N-1)
integer :: a_ref(0:N-1)
integer :: i
integer, external :: fib
!$omp simd
do i = 0,N-1
b(i) = i
end do
!$omp simd
do i=0,N-1
a(i) = fib(b(i))
end do
call fib_ref (a_ref, N)
do i = 0, N-1
if (a(i) .ne. a_ref(i)) call abort ()
end do
end program
recursive function fib(n) result(r)
!$omp declare simd(fib) inbranch
integer :: n, r
if (n <= 1) then
r = n
else
r = fib(n-1) + fib(n-2)
endif
end function fib
subroutine fib_ref(a_ref, n)
integer :: n, a_ref(0:n-1)
a_ref(0) = 0
a_ref(1) = 1
do i = 2, n-1
a_ref(i) = a_ref(i-1) + a_ref(i-2)
end do
end subroutine fib_ref
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