[Bug lto/99849] New: ICE in expand_expr_real_1, at expr.c:11556 since r5-5407-g30d5d8c5189064c8

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99849

            Bug ID: 99849
           Summary: ICE in expand_expr_real_1, at expr.c:11556 since
                    r5-5407-g30d5d8c5189064c8
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: andi-gcc at firstfloor dot org, hubicka at gcc dot gnu.org,
                    jakub at gcc dot gnu.org, marxin at gcc dot gnu.org
  Target Milestone: ---

It's reduced from Linux kernel compiled with LTO and -flto-partition=1to1

$ cat a.i
struct {
  struct uapi_definition *driver_def;
} * mlx5_ib_stage_caps_init_dev;

struct auxiliary_driver {
  int *probe;
};

struct uverbs_obj_type {
  int *type_class;
};

const struct uverbs_obj_idr_type {
  struct uverbs_obj_type type;
} uverbs_idr_class;

struct uapi_definition {
  struct {
    struct uverbs_obj_type chain_obj_tree;
  };
};

struct mlx5_ib_stage {
  void *cleanup;
} mlx5_ib_object_MLX5_IB_OBJECT_VAR = {
    &(&(const struct uverbs_obj_idr_type){(void * )&uverbs_idr_class})->type};

struct uverbs_obj_type mlx5_ib_object_MLX5_IB_OBJECT_UAR = {
    &(&(const struct uverbs_obj_idr_type){(void *)&uverbs_idr_class})->type};

struct uapi_definition mlx5_ib_defs[] = {&mlx5_ib_object_MLX5_IB_OBJECT_VAR,
                                         &mlx5_ib_object_MLX5_IB_OBJECT_UAR};

void
mlx5_ib_stage_caps_init() {
  mlx5_ib_stage_caps_init_dev->driver_def = mlx5_ib_defs;
}

struct mlx5_ib_stage mlx5r_probe_profile = {mlx5_ib_stage_caps_init};

void __mlx5_ib_add();

int
mlx5r_probe() { __mlx5_ib_add(mlx5r_probe_profile); }

struct auxiliary_driver mlx5r_driver = {(int *)mlx5r_probe};

void __auxiliary_driver_register();
void mlx5_ib_init() { __auxiliary_driver_register(mlx5r_driver); }

void *__initcall__kmod_mlx5_ib__1811_4811_mlx5_ib_init6
__attribute__((__used__)) =
    mlx5_ib_init;

$ gcc -O2 -flto a.i -flto-partition=1to1 -Wno-incompatible-pointer-types
-Wno-discarded-qualifiers -shared -fPIC
lto1: internal compiler error: in expand_expr_real_1, at expr.c:11556
0x641a09 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        /home/marxin/Programming/gcc/gcc/expr.c:11556
0x9d6077 expand_expr
        /home/marxin/Programming/gcc/gcc/expr.h:282
0x9d6077 expand_expr_addr_expr_1
        /home/marxin/Programming/gcc/gcc/expr.c:8223
0x9d615a expand_expr_addr_expr_1
        /home/marxin/Programming/gcc/gcc/expr.c:8269
0x9ca09e expand_expr_addr_expr
        /home/marxin/Programming/gcc/gcc/expr.c:8344
0x9ca09e expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        /home/marxin/Programming/gcc/gcc/expr.c:11513
0x1088d5b expand_expr
        /home/marxin/Programming/gcc/gcc/expr.h:282
0x1088d5b output_constant
        /home/marxin/Programming/gcc/gcc/varasm.c:5240
0x1087dad output_constant
        /home/marxin/Programming/gcc/gcc/varasm.c:5529
0x1087dad output_constructor_regular_field
        /home/marxin/Programming/gcc/gcc/varasm.c:5529
0x1087dad output_constructor
        /home/marxin/Programming/gcc/gcc/varasm.c:5796
0x1089793 output_constant
        /home/marxin/Programming/gcc/gcc/varasm.c:5148
0x1089793 assemble_variable_contents
        /home/marxin/Programming/gcc/gcc/varasm.c:2211
0x108f0d4 assemble_variable(tree_node*, int, int, int)
        /home/marxin/Programming/gcc/gcc/varasm.c:2390
0x1092dd9 varpool_node::assemble_decl()
        /home/marxin/Programming/gcc/gcc/varpool.c:595
0x1092dd9 varpool_node::assemble_decl()
        /home/marxin/Programming/gcc/gcc/varpool.c:563
0x1093900 symbol_table::output_variables()
        /home/marxin/Programming/gcc/gcc/varpool.c:761
0x8e4a66 symbol_table::compile()
        /home/marxin/Programming/gcc/gcc/cgraphunit.c:2361
0x8e4a66 symbol_table::compile()
        /home/marxin/Programming/gcc/gcc/cgraphunit.c:2269
0x82d7b4 lto_main()
        /home/marxin/Programming/gcc/gcc/lto/lto.c:653
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
lto-wrapper: fatal error: gcc returned 1 exit status
compilation terminated.
/usr/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status