[Bug tree-optimization/58069] [4.9 Regression] ICE in tree_ssa_unswitch_loops at -O3 in 32 bit mode

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58069

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
t.c: In function ‘main’:
t.c:43:5: error: definition in block 13 follows the use
 int main ()
     ^
for SSA_NAME: _117 in statement:
_49 = _117 | _57;
t.c:43:5: internal compiler error: verify_ssa failed
0xaa542c verify_ssa(bool)
    /home/marek/src/gcc/gcc/tree-ssa.c:1046
0x87dbbe execute_function_todo
    /home/marek/src/gcc/gcc/passes.c:1628
0x87e5fc execute_todo
    /home/marek/src/gcc/gcc/passes.c:1660
Please submit a full bug report,
with preprocessed source if appropriate.
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Subject: [Bug c++/58076] New: internal compiler error: tree check:=?UTF-8?Q? expected tree that contains ‘decl common’ structure?=,=?UTF-8?Q? have ‘identifier_node’ in get_narrower?=, at tree.c:8500
Date: Sun, 04 Aug 2013 08:07:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58076

            Bug ID: 58076
           Summary: internal compiler error: tree check: expected tree
                    that contains ‘decl common’ structure, have
                    ‘identifier_node’ in get_narrower, at tree.c:8500
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: young.cpy at gmail dot com

0x8991bef tree_contains_struct_check_failed(tree_node const*,
tree_node_structure_enum, char const*, int, char const*)
        ../.././gcc/tree.c:9340
0x89a1cac contains_struct_check
        ../.././gcc/tree.h:3804
0x89a1cac get_narrower(tree_node*, int*)
        ../.././gcc/tree.c:8500
0x8597a03 operand_equal_for_comparison_p
        ../.././gcc/fold-const.c:2845
0x85524d2 fold_ternary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*, tree_node*)
        ../.././gcc/fold-const.c:14098
0x85556c4 fold_build3_stat_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*, tree_node*)
        ../.././gcc/fold-const.c:15054
0x85994ef fold_binary_op_with_conditional_arg
        ../.././gcc/fold-const.c:6170
0x8561e9e fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
        ../.././gcc/fold-const.c:10081
0x85894f2 fold_build2_stat_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
        ../.././gcc/fold-const.c:14992
0x85a3547 build_range_check(unsigned int, tree_node*, tree_node*, int,
tree_node*, tree_node*)
        ../.././gcc/fold-const.c:4279
0x838db81 warn_logical_operator(unsigned int, tree_code, tree_node*, tree_code,
tree_node*, tree_code, tree_node*)
        ../.././gcc/c-family/c-common.c:1654
0x8172076 build_new_op_1
        ../.././gcc/cp/call.c:5447
0x8172d3b build_new_op(unsigned int, tree_code, int, tree_node*, tree_node*,
tree_node*, tree_node**, int)
        ../.././gcc/cp/call.c:5512
0x82ab71c build_x_binary_op(unsigned int, tree_code, tree_node*, tree_code,
tree_node*, tree_code, tree_node**, int)
        ../.././gcc/cp/typeck.c:3751
0x8289b73 cp_parser_binary_expression
        ../.././gcc/cp/parser.c:7809
0x8289dd8 cp_parser_assignment_expression
        ../.././gcc/cp/parser.c:7928
0x828bd1d cp_parser_expression
        ../.././gcc/cp/parser.c:8090
0x829af4c cp_parser_expression
        ../.././gcc/cp/parser.c:8129
0x829af4c cp_parser_condition
        ../.././gcc/cp/parser.c:9786
0x82817b1 cp_parser_selection_statement
        ../.././gcc/cp/parser.c:9563
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/58069] [4.9 Regression] ICE in tree_ssa_unswitch_loops at -O3 in 32 bit mode
Date: Sun, 04 Aug 2013 08:35:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idX069

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Slightly reduced

int b, c;
static *d = &c;
void
foo (void)
{
  int f, i, j, *g;
  int h[] = { 0, 0, 0, 1, 0, 0, 0, 0, 1 };
  for (i = 0; i < 1; i++)
    {
      int *k = &b;
      if (*g)
    fn3 ();
      else
    {
      *k = 0;
      fn4 ();
    }
      *g = *k;
      for (j = 8; j; j--)
    {
      for (f = 0; f <= 8; f++)
        *d |= h[f] && *k;
      int *o = &h[0];
      *o = *k;
    }
    }
}