[Bug c/60804] New: Another CilkPlus ICE in gimplify_expr, at gimplify.c:8335

["andi-gcc at firstfloor dot org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60804

            Bug ID: 60804
           Summary: Another CilkPlus ICE in gimplify_expr, at
                    gimplify.c:8335
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: andi-gcc at firstfloor dot org

Created attachment 32577
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32577&action=edit
test case from csmith

I hacked csmith to add some _Cilk_spawn keywords and let it run for a bit.

The only new ICE that turned up was this (in various incarnations)

Here's the unreduced file from csmith.

x.c:178:35: internal compiler error: in gimplify_expr, at gimplify.c:8335
     if ((safe_div_func_uint8_t_u_u(_Cilk_spawn func_4(((--(*l_9)) , g_10),
((((
void*)0 != g_13) , (&g_14[1][0] == ((safe_add_func_uint32_t_u_u(g_14[1][0],
(g_1
9 || (((*l_2079) = _Cilk_spawn
func_20(((safe_rshift_func_uint16_t_u_s((~((*l_39
) = ((safe_rshift_func_int16_t_s_u(((*l_37) =
(safe_add_func_int8_t_s_s((_Cilk_s
pawn func_28(g_31, g_32) <= g_19), 0x5FL))), 11)) , 0xC254L))), 5)) & g_19)))
!=
 (void*)0)))) , &g_33))) | l_2080), g_420[4][0][1], g_847), l_2080)))
                                   ^
0x79bad0 gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_ba
se**, bool (*)(tree_node*), int)
        ../../gcc/gcc/gimplify.c:8335
0x799d38 gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_ba
se**, bool (*)(tree_node*), int)
        ../../gcc/gcc/gimplify.c:7715
0x7a0ed3 gimplify_call_expr
        ../../gcc/gcc/gimplify.c:2354
0x79b1fc gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_ba
se**, bool (*)(tree_node*), int)
        ../../gcc/gcc/gimplify.c:7402
0x79aacc gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_ba
...