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1 ! PR tree-optimization/65450
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2 ! { dg-do run }
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3 ! { dg-additional-options "-mtune=amdfam10" { target x86_64-*-* i?86-*-* } }
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4
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5 program pr65450
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6 integer :: n, m, o, i, k
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7 double precision :: u(500,60,3), h(500,60,3)
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8 double precision :: v(500,60)
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9 u = 0
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10 h = 0
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11 o = 1
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12 m = 2
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13 n = 3
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14 do k = 1, 50
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15 v = foo (u(:,:,m))
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16 u(2:499,1:60,n) = u(2:499,1:60,o)+16.d0
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17 h(1:500,2:59,n) = h(1:500,2:59,o)-4.d0*v(1:500,2:59)-32.0d0
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18 i = o
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19 o = m
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20 m = n
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21 n = i
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22 end do
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23 if (abs (v(17, 23) + h(17, 23, 2) + 768.0d0) > 0.5d0) call abort
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24 contains
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25 function foo(a)
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26 double precision :: a(:,:)
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27 double precision :: foo(size(a,dim=1),size(a,dim=2))
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28 integer :: i, j
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29 i = size(a,dim=1)
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30 j = size(a,dim=2)
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31 foo(2:i-1,1:j) = a(3:i,1:j)-a(1:i-2,1:j)
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32 foo(1,1:j) = 2*(a(2,1:j)-a(1,1:j))
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33 foo(i,1:j) = 2*(a(i,1:j)-a(i-1,1:j))
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34 end function foo
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35 end program pr65450
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