}
/* Initialize and activate a temporary. */
-static void init_ts_info(TempOptInfo *infos,
- TCGTempSet *temps_used, TCGTemp *ts)
+static void init_ts_info(TCGTempSet *temps_used, TCGTemp *ts)
{
size_t idx = temp_idx(ts);
- if (!test_bit(idx, temps_used->l)) {
- TempOptInfo *ti = &infos[idx];
+ TempOptInfo *ti;
+ if (test_bit(idx, temps_used->l)) {
+ return;
+ }
+ set_bit(idx, temps_used->l);
+
+ ti = ts->state_ptr;
+ if (ti == NULL) {
+ ti = tcg_malloc(sizeof(TempOptInfo));
ts->state_ptr = ti;
- ti->next_copy = ts;
- ti->prev_copy = ts;
- if (ts->kind == TEMP_CONST) {
- ti->is_const = true;
- ti->val = ti->mask = ts->val;
- if (TCG_TARGET_REG_BITS > 32 && ts->type == TCG_TYPE_I32) {
- /* High bits of a 32-bit quantity are garbage. */
- ti->mask |= ~0xffffffffull;
- }
- } else {
- ti->is_const = false;
- ti->mask = -1;
+ }
+
+ ti->next_copy = ts;
+ ti->prev_copy = ts;
+ if (ts->kind == TEMP_CONST) {
+ ti->is_const = true;
+ ti->val = ts->val;
+ ti->mask = ts->val;
+ if (TCG_TARGET_REG_BITS > 32 && ts->type == TCG_TYPE_I32) {
+ /* High bits of a 32-bit quantity are garbage. */
+ ti->mask |= ~0xffffffffull;
}
- set_bit(idx, temps_used->l);
+ } else {
+ ti->is_const = false;
+ ti->mask = -1;
}
}
-static void init_arg_info(TempOptInfo *infos,
- TCGTempSet *temps_used, TCGArg arg)
+static void init_arg_info(TCGTempSet *temps_used, TCGArg arg)
{
- init_ts_info(infos, temps_used, arg_temp(arg));
+ init_ts_info(temps_used, arg_temp(arg));
}
static TCGTemp *find_better_copy(TCGContext *s, TCGTemp *ts)
/* Propagate constants and copies, fold constant expressions. */
void tcg_optimize(TCGContext *s)
{
- int nb_temps, nb_globals;
+ int nb_temps, nb_globals, i;
TCGOp *op, *op_next, *prev_mb = NULL;
- TempOptInfo *infos;
TCGTempSet temps_used;
/* Array VALS has an element for each temp.
nb_temps = s->nb_temps;
nb_globals = s->nb_globals;
+
bitmap_zero(temps_used.l, nb_temps);
- infos = tcg_malloc(sizeof(TempOptInfo) * nb_temps);
+ for (i = 0; i < nb_temps; ++i) {
+ s->temps[i].state_ptr = NULL;
+ }
QTAILQ_FOREACH_SAFE(op, &s->ops, link, op_next) {
uint64_t mask, partmask, affected, tmp;
- int nb_oargs, nb_iargs, i;
+ int nb_oargs, nb_iargs;
TCGOpcode opc = op->opc;
const TCGOpDef *def = &tcg_op_defs[opc];
for (i = 0; i < nb_oargs + nb_iargs; i++) {
TCGTemp *ts = arg_temp(op->args[i]);
if (ts) {
- init_ts_info(infos, &temps_used, ts);
+ init_ts_info(&temps_used, ts);
}
}
} else {
nb_oargs = def->nb_oargs;
nb_iargs = def->nb_iargs;
for (i = 0; i < nb_oargs + nb_iargs; i++) {
- init_arg_info(infos, &temps_used, op->args[i]);
+ init_arg_info(&temps_used, op->args[i]);
}
}