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26 lines
847 B
Fortran
26 lines
847 B
Fortran
! { dg-do compile }
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! { dg-options "-O2 -fdump-tree-optimized" }
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! Tests whether volatile really works for arrays
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! PR fortran/29601
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logical, allocatable, volatile :: t1(:)
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logical, allocatable :: t2(:)
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integer :: i
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allocate(t1(1),t2(1))
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t1 = .false.
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t2 = .false.
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do i = 1, 2
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if(ubound(t1,1) /= 1) print *, 'VolatileNotOptimizedAway1'
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if(ubound(t2,1) /= 1) print *, 'NonVolatileNotOptimizedAway1'
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end do
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t1 = .false.
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if(t1(1)) print *, 'VolatileNotOptimizedAway2'
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t2 = .false.
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if(t2(1)) print *, 'NonVolatileNotOptimizedAway2'
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end
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! { dg-final { scan-tree-dump "VolatileNotOptimizedAway1" "optimized" } }
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! { dg-final { scan-tree-dump "VolatileNotOptimizedAway2" "optimized" } }
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! { dg-final { scan-tree-dump-not "NonVolatileNotOptimizedAway1" "optimized" } }
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! { dg-final { scan-tree-dump-not "NonVolatileNotOptimizedAway2" "optimized" } }
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