1/* PR optimization/9888 */
2/* Originator: Jim Bray <jb@as220.org> */
3/* { dg-do run } */
4/* { dg-require-effective-target ilp32 } */
5/* { dg-options "-mtune=k6 -Os" } */
6
7enum reload_type
8{
9  RELOAD_FOR_INPUT, RELOAD_FOR_OUTPUT, RELOAD_FOR_INSN,
10  RELOAD_FOR_INPUT_ADDRESS, RELOAD_FOR_INPADDR_ADDRESS,
11  RELOAD_FOR_OUTPUT_ADDRESS, RELOAD_FOR_OUTADDR_ADDRESS,
12  RELOAD_FOR_OPERAND_ADDRESS, RELOAD_FOR_OPADDR_ADDR,
13  RELOAD_OTHER, RELOAD_FOR_OTHER_ADDRESS
14};
15
16#define FOO_SIZE 3
17
18/* My results, varying with FOO_SIZE:
19   30: asm error "value of ..fff77 too large:
20   3 to 29: ....ff7d...
21   1 to 2: no error.  */
22
23struct reload
24{
25   int foo[FOO_SIZE];
26   int opnum;
27   enum reload_type when_needed;
28   unsigned int optional:1;
29   unsigned int secondary_p:1;
30};
31
32#define N_RELOADS  2
33
34struct reload rld[N_RELOADS];
35int n_reloads = N_RELOADS;
36
37int main(void)
38{
39  int i;
40
41  enum reload_type operand_type[1];
42
43  enum reload_type address_type[1];
44
45  int operand_reloadnum[1];
46  int goal_alternative_matches[1];
47
48  for (i = 0; i < n_reloads; i++)
49    {
50      if (rld[i].secondary_p
51          && rld[i].when_needed == operand_type[rld[i].opnum])
52        rld[i].when_needed = address_type[rld[i].opnum];
53
54      if ((rld[i].when_needed == RELOAD_FOR_INPUT_ADDRESS
55           || rld[i].when_needed == RELOAD_FOR_OUTPUT_ADDRESS
56           || rld[i].when_needed == RELOAD_FOR_INPADDR_ADDRESS
57           || rld[i].when_needed == RELOAD_FOR_OUTADDR_ADDRESS)
58          && (operand_reloadnum[rld[i].opnum] < 0
59              || rld[operand_reloadnum[rld[i].opnum]].optional))
60        {
61
62          if (rld[i].when_needed == RELOAD_FOR_INPADDR_ADDRESS
63              || rld[i].when_needed == RELOAD_FOR_OUTADDR_ADDRESS)
64            rld[i].when_needed = RELOAD_FOR_OPADDR_ADDR;
65          else
66            rld[i].when_needed = RELOAD_FOR_OPERAND_ADDRESS;
67        }
68
69      if ((rld[i].when_needed == RELOAD_FOR_INPUT_ADDRESS
70           || rld[i].when_needed == RELOAD_FOR_INPADDR_ADDRESS)
71          && operand_reloadnum[rld[i].opnum] >= 0
72          && (rld[operand_reloadnum[rld[i].opnum]].when_needed
73              == RELOAD_OTHER))
74        rld[i].when_needed = RELOAD_FOR_OTHER_ADDRESS;
75
76      if (goal_alternative_matches[rld[i].opnum] >= 0)
77        rld[i].opnum = goal_alternative_matches[rld[i].opnum];
78    }
79
80  return 0;
81}
82