void
loop_optimizer_finalize (struct function *fn)
{
struct loop *loop;
basic_block bb;
timevar_push (TV_LOOP_FINI);
if (loops_state_satisfies_p (fn, LOOPS_HAVE_RECORDED_EXITS))
release_recorded_exits (fn);
free_numbers_of_iterations_estimates (fn);
/* If we should preserve loop structure, do not free it but clear
flags that advanced properties are there as we are not preserving
that in full. */
if (fn->curr_properties & PROP_loops)
{
loops_state_clear (fn, LOOP_CLOSED_SSA
| LOOPS_HAVE_MARKED_IRREDUCIBLE_REGIONS
| LOOPS_HAVE_PREHEADERS
| LOOPS_HAVE_SIMPLE_LATCHES
| LOOPS_HAVE_FALLTHRU_PREHEADERS);
loops_state_set (fn, LOOPS_MAY_HAVE_MULTIPLE_LATCHES);
goto loop_fini_done;
}
FOR_EACH_LOOP_FN (fn, loop, 0)
free_simple_loop_desc (loop);
/* Clean up. */
flow_loops_free (loops_for_fn (fn));
ggc_free (loops_for_fn (fn));
set_loops_for_fn (fn, NULL);
FOR_ALL_BB_FN (bb, fn)
{
bb->loop_father = NULL;
}
loop_fini_done:
timevar_pop (TV_LOOP_FINI);
}
static bool
gate_loop (function *fn)
{
if (!flag_tree_loop_optimize)
return false;
/* For -fdump-passes which runs before loop discovery print the
state of -ftree-loop-optimize. */
if (!loops_for_fn (fn))
return true;
return number_of_loops (fn) > 1;
}