[Bug tree-optimization/97000] New: [nvptx, openacc] internal compiler error: in nvptx_find_par, at config/nvptx/nvptx.c:3293

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97000

            Bug ID: 97000
           Summary: [nvptx, openacc] internal compiler error: in
                    nvptx_find_par, at config/nvptx/nvptx.c:3293
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

When building an x86_64 + nvptx accelerator setup with the patch adding
libatomic for nvptx (
https://gcc.gnu.org/pipermail/gcc-patches/2020-September/553393.html ) , we run
into:
...
during RTL pass: mach
/home/vries/oacc/trunk/source-gcc/libgomp/testsuite/libgomp.oacc-fortran/asyncwait-1.f90:
In function ‘MAIN__._omp_fn.0’:
/home/vries/oacc/trunk/source-gcc/libgomp/testsuite/libgomp.oacc-fortran/asyncwait-1.f90:19:
internal compiler error: in nvptx_find_par, at config/nvptx/nvptx.c:3293
0x160c390 nvptx_find_par
        /home/vries/oacc/trunk/source-gcc/gcc/config/nvptx/nvptx.c:3293
0x160c48a nvptx_find_par
        /home/vries/oacc/trunk/source-gcc/gcc/config/nvptx/nvptx.c:3320
0x160c48a nvptx_find_par
        /home/vries/oacc/trunk/source-gcc/gcc/config/nvptx/nvptx.c:3320
0x160c48a nvptx_find_par
        /home/vries/oacc/trunk/source-gcc/gcc/config/nvptx/nvptx.c:3320
0x160c48a nvptx_find_par
        /home/vries/oacc/trunk/source-gcc/gcc/config/nvptx/nvptx.c:3320
0x160c522 nvptx_discover_pars
        /home/vries/oacc/trunk/source-gcc/gcc/config/nvptx/nvptx.c:3344
0x1611046 nvptx_reorg
        /home/vries/oacc/trunk/source-gcc/gcc/config/nvptx/nvptx.c:5055
0x1059c88 execute
        /home/vries/oacc/trunk/source-gcc/gcc/reorg.c:4028
...