29 lines
1.1 KiB
Fortran
29 lines
1.1 KiB
Fortran
! { dg-do run }
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! { dg-options "-O3 -fdump-tree-original" }
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! Tests the fix for PR33850, in which one of the two assignments
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! below would produce an unnecessary temporary for the index
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! expression, following the fix for PR33749.
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!
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! Contributed by Dick Hendrickson on comp.lang.fortran,
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! " Most elegant syntax for inverting a permutation?" 20071006
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!
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integer(4) :: p4(4) = (/2,4,1,3/)
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integer(4) :: q4(4) = (/2,4,1,3/)
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integer(8) :: p8(4) = (/2,4,1,3/)
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integer(8) :: q8(4) = (/2,4,1,3/)
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p4(q4) = (/(i, i = 1, 4)/)
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q4(q4) = (/(i, i = 1, 4)/)
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p8(q8) = (/(i, i = 1, 4)/)
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q8(q8) = (/(i, i = 1, 4)/)
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if (any(p4 .ne. q4)) call abort ()
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if (any(p8 .ne. q8)) call abort ()
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end
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! Whichever is the default length for array indices will yield
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! parm 18 times, because a temporary is not necessary. The other
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! cases will all yield a temporary, so that atmp appears 18 times.
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! Note that it is the kind conversion that generates the temp.
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!
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! { dg-final { scan-tree-dump-times "parm" 18 "original" } }
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! { dg-final { scan-tree-dump-times "atmp" 18 "original" } }
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! { dg-final { cleanup-tree-dump "original" } }
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