612f8ec7ac
This PR adds support seq_cst (sequential consistency) clause for the flush directive in OpenMP. The seq_cst clause enforces a stricter memory ordering, ensuring that all threads observe the memory effects of the flush in the same order, improving consistency in memory operations across threads. --------- Co-authored-by: Shashwathi N <nshashwa@pe28vega.hpc.amslabs.hpecorp.net> Co-authored-by: CHANDRA GHALE <chandra.nitdgp@gmail.com>
88 lines
3.1 KiB
Fortran
88 lines
3.1 KiB
Fortran
! REQUIRES: openmp_runtime
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! RUN: %python %S/../test_errors.py %s %flang_fc1 %openmp_flags -fopenmp-version=51
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! Check OpenMP 5.0 - 2.17.8 flush Construct
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! Restriction -
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! If memory-order-clause is release, acquire, or acq_rel, list items must not be specified on the flush directive.
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use omp_lib
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implicit none
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TYPE someStruct
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REAL :: rr
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end TYPE
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integer :: i, a, b
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real, DIMENSION(10) :: array
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TYPE(someStruct) :: structObj
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a = 1.0
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!$omp parallel num_threads(4)
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!No list flushes all.
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if (omp_get_thread_num() == 1) THEN
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!$omp flush
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END IF
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array = (/1, 2, 3, 4, 5, 6, 7, 8, 9, 10/)
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!Only memory-order-clauses.
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if (omp_get_thread_num() == 1) THEN
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! Not allowed clauses.
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!$omp flush seq_cst
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!ERROR: RELAXED clause is not allowed on the FLUSH directive
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!$omp flush relaxed
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! Not allowed more than once.
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!ERROR: At most one ACQ_REL clause can appear on the FLUSH directive
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!$omp flush acq_rel acq_rel
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!ERROR: At most one RELEASE clause can appear on the FLUSH directive
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!$omp flush release release
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!ERROR: At most one ACQUIRE clause can appear on the FLUSH directive
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!$omp flush acquire acquire
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! Mix of allowed and not allowed.
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!$omp flush seq_cst acquire
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END IF
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array = (/1, 2, 3, 4, 5, 6, 7, 8, 9, 10/)
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! No memory-order-clause only list-items.
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if (omp_get_thread_num() == 2) THEN
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!$omp flush (a)
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!$omp flush (i, a, b)
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!$omp flush (array, structObj%rr)
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! Too many flush with repeating list items.
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!$omp flush (i, a, b, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, b, b, b, b)
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!ERROR: No explicit type declared for 'notpresentitem'
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!$omp flush (notPresentItem)
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END IF
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array = (/1, 2, 3, 4, 5, 6, 7, 8, 9, 10/)
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if (omp_get_thread_num() == 3) THEN
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!ERROR: If memory-order-clause is RELEASE, ACQUIRE, or ACQ_REL, list items must not be specified on the FLUSH directive
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!$omp flush acq_rel (array)
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!ERROR: If memory-order-clause is RELEASE, ACQUIRE, or ACQ_REL, list items must not be specified on the FLUSH directive
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!$omp flush acq_rel (array, a, i)
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array = (/1, 2, 3, 4, 5, 6, 7, 8, 9, 10/)
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!ERROR: If memory-order-clause is RELEASE, ACQUIRE, or ACQ_REL, list items must not be specified on the FLUSH directive
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!$omp flush release (array)
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!ERROR: If memory-order-clause is RELEASE, ACQUIRE, or ACQ_REL, list items must not be specified on the FLUSH directive
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!$omp flush release (array, a)
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array = (/1, 2, 3, 4, 5, 6, 7, 8, 9, 10/)
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!ERROR: If memory-order-clause is RELEASE, ACQUIRE, or ACQ_REL, list items must not be specified on the FLUSH directive
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!$omp flush acquire (array)
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!ERROR: If memory-order-clause is RELEASE, ACQUIRE, or ACQ_REL, list items must not be specified on the FLUSH directive
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!$omp flush acquire (array, a, structObj%rr)
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END IF
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!$omp end parallel
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!$omp parallel num_threads(4)
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array = (/1, 2, 3, 4, 5, 6, 7, 8, 9, 10/)
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!WARNING: OpenMP directive MASTER has been deprecated, please use MASKED instead.
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!$omp master
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!$omp flush (array)
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!$omp end master
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!$omp end parallel
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end
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