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78 lines
3.2 KiB
Fortran
78 lines
3.2 KiB
Fortran
! RUN: %python %S/../test_errors.py %s %flang -fopenacc -fno-openacc-default-none-scalars-strict -Wopenacc-default-none-scalars-strict
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! With -fno-openacc-default-none-scalars-strict, scalar variables without explicit
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! data clauses under DEFAULT(NONE) are allowed and get a warning
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! (-Wopenacc-default-none-scalars-strict) instead of an error. Arrays continue to error.
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subroutine default_none_scalars()
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integer :: a
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integer :: b(10)
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!$acc parallel default(none)
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!WARNING: Implicit attribute inferred for DEFAULT(NONE) scalar 'a' [-Wopenacc-default-none-scalars-strict]
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a = 1
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!ERROR: The DEFAULT(NONE) clause requires that 'b' must be listed in a data-mapping clause
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b(1) = 2
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!$acc end parallel
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end subroutine
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! Scalar computed before an ACC parallel loop and read-only inside it.
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subroutine default_none_scalar_precomputed(x, n, p, q)
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implicit none
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real :: x(n), factor, p, q
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integer :: n, i
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factor = p / q
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!$acc parallel loop default(none) present(x)
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!WARNING: Implicit attribute inferred for DEFAULT(NONE) scalar 'n' [-Wopenacc-default-none-scalars-strict]
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do i = 1, n
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!WARNING: Implicit attribute inferred for DEFAULT(NONE) scalar 'factor' [-Wopenacc-default-none-scalars-strict]
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x(i) = x(i) * factor
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end do
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!$acc end parallel loop
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end subroutine
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! Non-scalar types always require an explicit data clause even with the flag:
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! character, derived type, allocatable, and pointer variables are excluded
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! from the pre-3.2 scalar extension.
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subroutine default_none_non_scalars()
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character(10) :: c
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type :: t
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integer :: i
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end type
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type(t) :: x
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integer, allocatable :: a
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integer, pointer :: p
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!$acc parallel default(none)
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!ERROR: The DEFAULT(NONE) clause requires that 'c' must be listed in a data-mapping clause
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c = "hi"
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!ERROR: The DEFAULT(NONE) clause requires that 'x' must be listed in a data-mapping clause
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x%i = 1
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!ERROR: The DEFAULT(NONE) clause requires that 'a' must be listed in a data-mapping clause
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a = 1
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!ERROR: The DEFAULT(NONE) clause requires that 'p' must be listed in a data-mapping clause
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p = 1
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!$acc end parallel
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end subroutine
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! Outer serial loop variable and scalars assigned in the outer loop body
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! are read inside a nested ACC parallel loop.
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subroutine default_none_outer_loop_scalars(x, n, m)
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implicit none
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real :: x(n), thresh, coef, val
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integer :: n, m, k, i
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do k = 1, m
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coef = real(m) / real(k)
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thresh = real(k) - real(k) / real(m)
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val = real(k) * 4.0
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!$acc parallel loop default(none) present(x)
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!WARNING: Implicit attribute inferred for DEFAULT(NONE) scalar 'n' [-Wopenacc-default-none-scalars-strict]
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do i = 1, n
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!WARNING: Implicit attribute inferred for DEFAULT(NONE) scalar 'thresh' [-Wopenacc-default-none-scalars-strict]
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!WARNING: Implicit attribute inferred for DEFAULT(NONE) scalar 'coef' [-Wopenacc-default-none-scalars-strict]
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!WARNING: Implicit attribute inferred for DEFAULT(NONE) scalar 'val' [-Wopenacc-default-none-scalars-strict]
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!WARNING: Implicit attribute inferred for DEFAULT(NONE) scalar 'k' [-Wopenacc-default-none-scalars-strict]
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if (x(i) < thresh) x(i) = x(i) + coef * val * real(k)
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end do
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!$acc end parallel loop
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end do
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end subroutine
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