84 lines
2.1 KiB
Fortran
84 lines
2.1 KiB
Fortran
! { dg-do run }
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! { dg-options "-fdump-tree-original" }
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!
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! PR fortran/35681
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! Test the use of temporaries in case of elemental subroutines.
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PROGRAM main
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IMPLICIT NONE
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INTEGER, PARAMETER :: sz = 5
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INTEGER :: i
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INTEGER :: a(sz) = (/ (i, i=1,sz) /)
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INTEGER :: b(sz)
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b = a
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CALL double(a(sz-b+1), a) ! { dg-warning "might interfere with actual" }
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! Don't check the result, as the above is invalid
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! and might produce unexpected results (overlapping vector subscripts).
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b = a
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CALL double (a, a) ! same range, no temporary
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IF (ANY(a /= 2*b)) CALL abort
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b = a
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CALL double (a+1, a) ! same range, no temporary
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IF (ANY(a /= 2*b+2)) CALL abort
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b = a
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CALL double ((a(1:sz)), a(1:sz)) ! same range, no temporary
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IF (ANY(a /= 2*b)) CALL abort
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b = a
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CALL double(a(1:sz-1), a(2:sz)) ! { dg-warning "might interfere with actual" }
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! Don't check the result, as the above is invalid,
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! and might produce unexpected results (arguments overlap).
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b = a
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CALL double((a(1:sz-1)), a(2:sz)) ! paren expression, temporary created
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! { dg-final { scan-tree-dump-times "A\.16\\\[4\\\]" 1 "original" } }
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IF (ANY(a /= (/ b(1), (2*b(i), i=1,sz-1) /))) CALL abort
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b = a
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CALL double(a(1:sz-1)+1, a(2:sz)) ! op expression, temporary created
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! { dg-final { scan-tree-dump-times "A\.25\\\[4\\\]" 1 "original" } }
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IF (ANY(a /= (/ b(1), (2*b(i)+2, i=1,sz-1) /))) CALL abort
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b = a
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CALL double(self(a), a) ! same range, no temporary
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IF (ANY(a /= 2*b)) CALL abort
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b = a
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CALL double(self(a(1:sz-1)), a(2:sz)) ! function expr, temporary created
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! { dg-final { scan-tree-dump-times "A\.37\\\[4\\\]" 1 "original" } }
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IF (ANY(a /= (/ b(1), (2*b(i), i=1,sz-1) /))) CALL abort
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CONTAINS
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ELEMENTAL SUBROUTINE double(a, b)
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IMPLICIT NONE
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INTEGER, INTENT(IN) :: a
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INTEGER, INTENT(OUT) :: b
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b = 2 * a
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END SUBROUTINE double
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ELEMENTAL FUNCTION self(a)
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IMPLICIT NONE
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INTEGER, INTENT(IN) :: a
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INTEGER :: self
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self = a
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END FUNCTION self
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END PROGRAM main
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! { dg-final { scan-tree-dump-times "_gfortran_internal_unpack" 3 "original" } }
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! { dg-final { cleanup-tree-dump "original" } }
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