gcc/libgomp/testsuite/libgomp.fortran/appendix-a/a.18.1.f90
Thomas Koenig bfc24e32b9 re PR fortran/84381 (replace non-std 'call abort' by 'stop 1' in gfortran testsuite)
2018-03-25  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/84381
	* testsuite/libgomp.fortran/aligned1.f03: Replace non-standard
	call abort by STOP n.
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From-SVN: r258846
2018-03-25 16:00:52 +00:00

60 lines
1.7 KiB
Fortran

! { dg-do run }
! { dg-options "-ffixed-form" }
REAL FUNCTION FN1(I)
INTEGER I
FN1 = I * 2.0
RETURN
END FUNCTION FN1
REAL FUNCTION FN2(A, B)
REAL A, B
FN2 = A + B
RETURN
END FUNCTION FN2
PROGRAM A18
INCLUDE "omp_lib.h" ! or USE OMP_LIB
INTEGER ISYNC(256)
REAL WORK(256)
REAL RESULT(256)
INTEGER IAM, NEIGHBOR
!$OMP PARALLEL PRIVATE(IAM, NEIGHBOR) SHARED(WORK, ISYNC) NUM_THREADS(4)
IAM = OMP_GET_THREAD_NUM() + 1
ISYNC(IAM) = 0
!$OMP BARRIER
! Do computation into my portion of work array
WORK(IAM) = FN1(IAM)
! Announce that I am done with my work.
! The first flush ensures that my work is made visible before
! synch. The second flush ensures that synch is made visible.
!$OMP FLUSH(WORK,ISYNC)
ISYNC(IAM) = 1
!$OMP FLUSH(ISYNC)
! Wait until neighbor is done. The first flush ensures that
! synch is read from memory, rather than from the temporary
! view of memory. The second flush ensures that work is read
! from memory, and is done so after the while loop exits.
IF (IAM .EQ. 1) THEN
NEIGHBOR = OMP_GET_NUM_THREADS()
ELSE
NEIGHBOR = IAM - 1
ENDIF
DO WHILE (ISYNC(NEIGHBOR) .EQ. 0)
!$OMP FLUSH(ISYNC)
END DO
!$OMP FLUSH(WORK, ISYNC)
RESULT(IAM) = FN2(WORK(NEIGHBOR), WORK(IAM))
!$OMP END PARALLEL
DO I=1,4
IF (I .EQ. 1) THEN
NEIGHBOR = 4
ELSE
NEIGHBOR = I - 1
ENDIF
IF (RESULT(I) .NE. I * 2 + NEIGHBOR * 2) THEN
STOP 1
ENDIF
ENDDO
END PROGRAM A18