| ! { dg-do run } |
| ! { dg-additional-options "-msse2" { target sse2_runtime } } |
| ! { dg-additional-options "-mavx" { target avx_runtime } } |
| |
| module SIMD3_mod |
| contains |
| subroutine work( a, b, n, sum ) |
| implicit none |
| integer :: i, n |
| double precision :: a(n), b(n), sum, tmp |
| |
| sum = 0.0d0 |
| call init(a, b, n) |
| !$omp simd private(tmp) reduction(+:sum) |
| do i = 1,n |
| tmp = a(i) + b(i) |
| sum = sum + tmp |
| end do |
| |
| end subroutine work |
| |
| subroutine work_ref( a, b, n, sum ) |
| implicit none |
| integer :: i, n |
| double precision :: a(n), b(n), sum, tmp |
| |
| sum = 0.0d0 |
| call init(a, b, n) |
| do i = 1,n |
| tmp = a(i) + b(i) |
| sum = sum + tmp |
| end do |
| |
| end subroutine work_ref |
| |
| subroutine init (a, b, n) |
| double precision :: a(*), b(*) |
| integer :: n, i, s |
| |
| s = -1 |
| do i = 1, n |
| a(i) = i * i * s |
| b(i) = i + i |
| s = -s |
| end do |
| |
| end subroutine |
| end module |
| |
| program SIMD3 |
| use SIMD3_mod |
| double precision :: a(128), b(128), sum, sum_ref, diff |
| double precision, parameter :: EPS = 0.0000000000000001 |
| |
| call work(a, b, 128, sum) |
| call work_ref(a, b, 128, sum_ref) |
| |
| diff = sum - sum_ref |
| |
| if (diff > EPS .or. -diff > EPS) stop 1 |
| |
| end program |
