[Bug fortran/99226] New: [11 Regression] ICE in expand_expr_real_1, at expr.c:10279

[gscfq--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99226

            Bug ID: 99226
           Summary: [11 Regression] ICE in expand_expr_real_1, at
                    expr.c:10279
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gs...@t-online.de
  Target Milestone: ---

Changed between 20200531 and 20200607, at -O1+ :
(compiles with single loop)


$ cat z1.f90
subroutine sub (n)
   integer :: n, i
   !$omp target
   !$omp teams distribute dist_schedule (static,n+4)
   do i = 1, 8
   end do
   !$omp teams distribute dist_schedule (static,n+4)
   do i = 1, 8
   end do
   !$omp end target
end


$ gfortran-11-20200531 -c z1.f90 -fopenmp -O2
$ gfortran-11-20210221 -c z1.f90 -fopenmp -O0
$
$ gfortran-11-20210221 -c z1.f90 -fopenmp -O2
during RTL pass: expand
z1.f90:3:15:

    3 |    !$omp target
      |               ^
internal compiler error: in expand_expr_real_1, at expr.c:10279
0x90a988 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        ../../gcc/expr.c:10273
0x907ca7 expand_expr
        ../../gcc/expr.h:282
0x907ca7 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        ../../gcc/expr.c:10600
0x907528 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        ../../gcc/expr.c:10848
0x909312 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        ../../gcc/expr.c:10208
0x907ca7 expand_expr
        ../../gcc/expr.h:282
0x907ca7 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        ../../gcc/expr.c:10600
0x909312 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        ../../gcc/expr.c:10208
0x912dd3 store_expr(tree_node*, rtx_def*, int, bool, bool)
        ../../gcc/expr.c:5886
0x914265 expand_assignment(tree_node*, tree_node*, bool)
        ../../gcc/expr.c:5622
0x809060 expand_gimple_stmt_1
        ../../gcc/cfgexpand.c:3910
0x809060 expand_gimple_stmt
        ../../gcc/cfgexpand.c:4008
0x80e257 expand_gimple_basic_block
        ../../gcc/cfgexpand.c:6045
0x81098e execute
        ../../gcc/cfgexpand.c:6729