| 1 | !!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!!!
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| 2 | !!! Copyright (c) 2017-20, Lawrence Livermore National Security, LLC
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| 3 | !!! and DataRaceBench project contributors. See the DataRaceBench/COPYRIGHT file for details.
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| 4 | !!!
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| 5 | !!! SPDX-License-Identifier: (BSD-3-Clause)
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| 6 | !!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!!!
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| 7 |
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| 8 | !A loop with loop-carried anti-dependence.
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| 9 | !Data race pair: a[i+1]@60:9 vs. a[i]@60:16
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| 10 |
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| 11 | !!- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -!!
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| 12 | !! NOTE by WenhaoWu (wuwenhao@udel.edu) !!
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| 13 | !! This example is modified so that the bound can be adjusted !!
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| 14 | !! by defining 'N' and if it is not defined then the bound value !!
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| 15 | !! in the original example is used as the default value of 'N' !!
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| 16 | !!- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -!!
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| 17 |
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| 18 | #ifndef N
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| 19 | #define N 10
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| 20 | #endif
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| 21 |
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| 22 | program DRB002_antidep1_var_yes
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| 23 | use omp_lib
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| 24 | implicit none
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| 25 | integer :: i, len, argCount, allocStatus, rdErr, ix
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| 26 | character(len=80), dimension(:), allocatable :: args
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| 27 | integer, dimension (:), allocatable :: a
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| 28 | len = N
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| 29 |
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| 30 | argCount = command_argument_count()
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| 31 | if (argCount == 0) then
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| 32 | write (*,'(a)') "No command line arguments provided."
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| 33 | end if
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| 34 |
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| 35 | allocate(args(argCount), stat=allocStatus)
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| 36 | if (allocStatus > 0) then
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| 37 | write (*,'(a)') "Allocation error, program terminated."
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| 38 | stop
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| 39 | end if
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| 40 |
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| 41 | do ix = 1, argCount
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| 42 | call get_command_argument(ix,args(ix))
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| 43 | end do
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| 44 |
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| 45 | if (argCount >= 1) then
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| 46 | read (args(1), '(i10)', iostat=rdErr) len
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| 47 | if (rdErr /= 0 ) then
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| 48 | write (*,'(a)') "Error, invalid integer value."
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| 49 | end if
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| 50 | end if
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| 51 |
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| 52 | allocate (a(len))
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| 53 |
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| 54 | do i = 1, len
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| 55 | a(i) = i
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| 56 | end do
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| 57 |
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| 58 | !$omp parallel do
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| 59 | do i = 1, len-1
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| 60 | a(i) = a(i+1)+1
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| 61 | end do
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| 62 | !$omp end parallel do
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| 63 |
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| 64 | deallocate(a)
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| 65 | deallocate(args)
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| 66 |
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| 67 | end program
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