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96 lines
2.1 KiB
Fortran
96 lines
2.1 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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! Semantic checks for incompatible memory orderings on atomic operations.
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subroutine test_atomic_read_mem_order()
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integer :: x, v
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! Valid orderings for read
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!$omp atomic read seq_cst
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v = x
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!$omp atomic read acquire
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v = x
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!$omp atomic read relaxed
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v = x
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! Invalid orderings for read
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!WARNING: An ATOMIC READ operation must not have RELEASE as the memory order, using RELAXED
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!$omp atomic read release
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v = x
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!$omp atomic read acq_rel
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v = x
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end subroutine
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subroutine test_atomic_write_mem_order()
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integer :: x, v
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! Valid orderings for write
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!$omp atomic write seq_cst
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x = v
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!$omp atomic write release
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x = v
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!$omp atomic write relaxed
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x = v
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! Invalid orderings for write
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!WARNING: An ATOMIC WRITE operation must not have ACQUIRE as the memory order, using RELAXED
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!$omp atomic write acquire
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x = v
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!$omp atomic write acq_rel
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x = v
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end subroutine
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subroutine test_atomic_update_mem_order()
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integer :: x
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! Valid orderings for update
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!$omp atomic update seq_cst
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x = x + 1
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!$omp atomic update release
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x = x + 1
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!$omp atomic update relaxed
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x = x + 1
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! No restrictions on update in OpenMP 5.1
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!$omp atomic update acquire
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x = x + 1
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!$omp atomic update acq_rel
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x = x + 1
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end subroutine
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subroutine test_atomic_capture_mem_order()
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integer :: x, v
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! Valid orderings for capture (all are allowed, but some produce warnings)
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!$omp atomic capture seq_cst
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v = x
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x = x + 1
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!$omp end atomic
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!$omp atomic capture acquire
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v = x
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x = x + 1
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!$omp end atomic
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!$omp atomic capture relaxed
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v = x
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x = x + 1
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!$omp end atomic
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! Capture with release/acq_rel: valid, no restrictions
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!$omp atomic capture release
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v = x
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x = x + 1
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!$omp end atomic
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!$omp atomic capture acq_rel
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v = x
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x = x + 1
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!$omp end atomic
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! Trigger an error so test_errors.py captures stderr
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!ERROR: ATOMIC READ cannot have COMPARE or CAPTURE clauses
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!$omp atomic read capture
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v = x
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x = x + 1
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!$omp end atomic
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end subroutine
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