llvm-project/flang/test/Semantics/omp-atomic.f90
Kiran Kumar T P 4536c6acb3 [flang][OpenMP] Enhance parser support for atomic construct to OpenMP 5.0
Summary:
This patch enhances parser support for atomic construct to OpenMP 5.0.
2.17.7 atomic -> ATOMIC [clause [,]] atomic-clause [[,] clause] |
                 ATOMIC [clause]
       clause -> memory-order-clause | HINT(hint-expression)
       memory-order-clause -> SEQ_CST | ACQ_REL | RELEASE | ACQUIRE | RELAXED
       atomic-clause -> READ | WRITE | UPDATE | CAPTURE

The patch includes code changes and testcase modifications.

Reviewed By: DavidTruby, kiranchandramohan, sameeranjoshi

Differential Revision: https://reviews.llvm.org/D82931
2020-09-08 06:52:07 +05:30

43 lines
711 B
Fortran

! RUN: %S/test_errors.sh %s %t %f18 -fopenmp
use omp_lib
! Check OpenMP 2.13.6 atomic Construct
a = 1.0
!$omp parallel num_threads(4)
!$omp atomic seq_cst, read
b = a
!$omp atomic seq_cst write
a = b
!$omp end atomic
!$omp atomic read acquire hint(OMP_LOCK_HINT_CONTENDED)
a = b
!$omp atomic release hint(OMP_LOCK_HINT_UNCONTENDED) write
a = b
!$omp atomic capture seq_cst
b = a
a = a + 1
!$omp end atomic
!$omp atomic hint(1) acq_rel capture
b = a
a = a + 1
!$omp end atomic
!ERROR: expected end of line
!ERROR: expected end of line
!$omp atomic read write
a = a + 1
!$omp atomic
a = a + 1
!$omp atomic relaxed
a = a + 1
!$omp end parallel
end