2017-04-10 11:32:00 +00:00
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! { dg-do run }
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! { dg-additional-options "-msse2" { target sse2_runtime } }
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! { dg-additional-options "-mavx" { target avx_runtime } }
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module SIMD1_mod
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contains
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subroutine init (a, a_ref, b, c, n, ioff_ptr)
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double precision :: a(*), a_ref(*), b(*), c(*)
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integer :: n, i, s
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integer, pointer :: ioff_ptr
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s = -1
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do i = 1, n
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a(i) = i * i * s
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a_ref(i) = a(i)
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b(i) = i + i
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end do
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do i = 1, n+ioff_ptr
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c(i) = i * 3
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end do
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end subroutine
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subroutine check (a, b, n)
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integer :: i, n
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double precision, parameter :: EPS = 0.0000000000001
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double precision :: diff, a(*), b(*)
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do i = 1, n
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diff = a(i) - b(i)
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2018-12-28 15:30:48 +00:00
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if (diff > EPS .or. -diff > EPS) STOP 1
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2017-04-10 11:32:00 +00:00
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end do
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end subroutine
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subroutine star(a, a_ref, b, c, n, ioff_ptr)
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double precision :: a(*), a_ref(*), b(*), c(*)
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integer :: n, i
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integer, pointer :: ioff_ptr
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call init (a, a_ref, b, c, n, ioff_ptr)
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!$omp simd
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do i = 1,n
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a(i) = a(i) * b(i) * c(i+ioff_ptr)
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end do
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do i = 1,n
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a_ref(i) = a_ref(i) * b(i) * c(i+ioff_ptr)
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end do
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call check (a, a_ref, n)
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end subroutine
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end module
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program SIMD1
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use SIMD1_mod, only : star
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double precision :: a(128), a_ref(128), b(128), c(144)
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integer, pointer:: ioff_ptr
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integer, target:: offset
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offset = 16
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ioff_ptr => offset
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call star (a, a_ref, b, c, 128, ioff_ptr)
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end program
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