Subversion Repositories openrisc_2011-10-31

/* PR optimization/9888 */

/* Originator: Jim Bray <jb@as220.org> */

/* { dg-do run } */

/* { dg-require-effective-target ilp32 } */

/* { dg-options "-mtune=k6 -Os" } */

enum reload_type

{

  RELOAD_FOR_INPUT, RELOAD_FOR_OUTPUT, RELOAD_FOR_INSN,

  RELOAD_FOR_INPUT_ADDRESS, RELOAD_FOR_INPADDR_ADDRESS,

  RELOAD_FOR_OUTPUT_ADDRESS, RELOAD_FOR_OUTADDR_ADDRESS,

  RELOAD_FOR_OPERAND_ADDRESS, RELOAD_FOR_OPADDR_ADDR,

  RELOAD_OTHER, RELOAD_FOR_OTHER_ADDRESS

};

#define FOO_SIZE 3

/* My results, varying with FOO_SIZE:

   30: asm error "value of ..fff77 too large:

   3 to 29: ....ff7d...

   1 to 2: no error.  */

struct reload

{

   int foo[FOO_SIZE];

   int opnum;

   enum reload_type when_needed;

   unsigned int optional:1;

   unsigned int secondary_p:1;

};

#define N_RELOADS  2

struct reload rld[N_RELOADS];

int n_reloads = N_RELOADS;

int main(void)

{

  int i;

  enum reload_type operand_type[1];

  enum reload_type address_type[1];

  int operand_reloadnum[1];

  int goal_alternative_matches[1];

  for (i = 0; i < n_reloads; i++)

    {

      if (rld[i].secondary_p

          && rld[i].when_needed == operand_type[rld[i].opnum])

        rld[i].when_needed = address_type[rld[i].opnum];

      if ((rld[i].when_needed == RELOAD_FOR_INPUT_ADDRESS

           || rld[i].when_needed == RELOAD_FOR_OUTPUT_ADDRESS

           || rld[i].when_needed == RELOAD_FOR_INPADDR_ADDRESS

           || rld[i].when_needed == RELOAD_FOR_OUTADDR_ADDRESS)

          && (operand_reloadnum[rld[i].opnum] < 0

              || rld[operand_reloadnum[rld[i].opnum]].optional))

        {

          if (rld[i].when_needed == RELOAD_FOR_INPADDR_ADDRESS

              || rld[i].when_needed == RELOAD_FOR_OUTADDR_ADDRESS)

            rld[i].when_needed = RELOAD_FOR_OPADDR_ADDR;

          else

            rld[i].when_needed = RELOAD_FOR_OPERAND_ADDRESS;

        }

      if ((rld[i].when_needed == RELOAD_FOR_INPUT_ADDRESS

           || rld[i].when_needed == RELOAD_FOR_INPADDR_ADDRESS)

          && operand_reloadnum[rld[i].opnum] >= 0

          && (rld[operand_reloadnum[rld[i].opnum]].when_needed

              == RELOAD_OTHER))

        rld[i].when_needed = RELOAD_FOR_OTHER_ADDRESS;

      if (goal_alternative_matches[rld[i].opnum] >= 0)

        rld[i].opnum = goal_alternative_matches[rld[i].opnum];

    }

  return 0;

}