gcc/testsuite/gfortran.dg/goacc/classify-kernels-unparallelized.f95

   1 ! Check offloaded function's attributes and classification for unparallelized
   2 ! OpenACC kernels.
   3
   4 ! { dg-additional-options "-O2" }
   5 ! { dg-additional-options "-fdump-tree-ompexp" }
   6 ! { dg-additional-options "-fdump-tree-parloops1-all" }
   7 ! { dg-additional-options "-fdump-tree-oaccdevlow" }
   8
   9 program main
  10   implicit none
  11   integer, parameter :: n = 1024
  12   integer, dimension (0:n-1) :: a, b, c
  13   integer :: i
  14
  15   ! An "external" mapping of loop iterations/array indices makes the loop
  16   ! unparallelizable.
  17   integer, external :: f
  18
  19   call setup(a, b)
  20
  21   !$acc kernels copyin (a(0:n-1), b(0:n-1)) copyout (c(0:n-1))
  22   do i = 0, n - 1
  23      c(i) = a(f (i)) + b(f (i))
  24   end do
  25   !$acc end kernels
  26 end program main
  27
  28 ! Check the offloaded function's attributes.
  29 ! { dg-final { scan-tree-dump-times "(?n)__attribute__\\(\\(oacc kernels, omp target entrypoint\\)\\)" 1 "ompexp" } }
  30
  31 ! Check that exactly one OpenACC kernels construct is analyzed, and that it
  32 ! can't be parallelized.
  33 ! { dg-final { scan-tree-dump-times "FAILED:" 1 "parloops1" } }
  34 ! { dg-final { scan-tree-dump-times "(?n)__attribute__\\(\\(oacc function \\(, , \\), oacc kernels, omp target entrypoint\\)\\)" 1 "parloops1" } }
  35 ! { dg-final { scan-tree-dump-not "SUCCESS: may be parallelized" "parloops1" } }
  36
  37 ! Check the offloaded function's classification and compute dimensions (will
  38 ! always be 1 x 1 x 1 for non-offloading compilation).
  39 ! { dg-final { scan-tree-dump-times "(?n)Function is unparallelized OpenACC kernels offload" 1 "oaccdevlow" } }
  40 ! { dg-final { scan-tree-dump-times "(?n)Compute dimensions \\\[1, 1, 1\\\]" 1 "oaccdevlow" } }
  41 ! { dg-final { scan-tree-dump-times "(?n)__attribute__\\(\\(oacc function \\(1, 1, 1\\), oacc kernels, omp target entrypoint\\)\\)" 1 "oaccdevlow" } }