[Bug libgomp/65362] New: OpenACC compilation on Tegra K1 (ARM)

["zziolko at clemson dot edu" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65362

            Bug ID: 65362
           Summary: OpenACC compilation on Tegra K1 (ARM)
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libgomp
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zziolko at clemson dot edu
                CC: jakub at gcc dot gnu.org

Created attachment 34992
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34992&action=edit
gfortran -v -save-temps -fopenacc abort-2.f90 output

The GCC 5.0 snapshot gcc-5-20150301 builds successfully on Tegra K1 processor
(Ubuntu 14.04 Linux on NVIDIA's Jetson TK1 platform). All attempts to compile c
or fortran code with -fopenacc fail.  

For example code abort-2.f90 (from the testsuite):

program main
  implicit none

  integer :: argc
  argc = command_argument_count ()

  !$acc parallel copyin(argc)
  if (argc .ne. 0) then
     call abort
  end if
  !$acc end parallel

end program main 

compiled using gfortran -fopenacc abort-2.f90 gives a message


abort-2.f90: In function âMAIN__._omp_fn.0â:
abort-2.f90:8:0: internal compiler error: in
convert_memory_address_addr_space_1, at explow.c:292
   if (argc .ne. 0) then
 ^
0x1df1e1 convert_memory_address_addr_space_1
    ../../gcc-5-20150301/gcc/explow.c:292
0x1df1e1 convert_memory_address_addr_space
    ../../gcc-5-20150301/gcc/explow.c:389
0x1df1e1 memory_address_addr_space(machine_mode, rtx_def*, unsigned char)
    ../../gcc-5-20150301/gcc/explow.c:403
0x1f1779 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
    ../../gcc-5-20150301/gcc/expr.c:9904
0x1ef439 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
    ../../gcc-5-20150301/gcc/expr.c:10171
0x1f8e83 store_expr_with_bounds(tree_node*, rtx_def*, int, bool, tree_node*)
    ../../gcc-5-20150301/gcc/expr.c:5385
0x1fe1a5 expand_assignment(tree_node*, tree_node*, bool)
    ../../gcc-5-20150301/gcc/expr.c:5154
0x1575e7 expand_gimple_stmt_1
    ../../gcc-5-20150301/gcc/cfgexpand.c:3385
0x1575e7 expand_gimple_stmt
    ../../gcc-5-20150301/gcc/cfgexpand.c:3481
0x158e4b expand_gimple_basic_block
    ../../gcc-5-20150301/gcc/cfgexpand.c:5470
0x15a649 execute
    ../../gcc-5-20150301/gcc/cfgexpand.c:6088


Similar message for the rest of the fortran or c tests. 

Marcin