Viewing file:  loop-2.c (2.25 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* PR optimization/9888 */
/* Originator: Jim Bray <jb@as220.org> */
/* { dg-do run } */
/* { dg-require-effective-target ia32 } */
/* { 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;
}
|
