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Fix marking of SMSed loops as BB_DISABLE_SCHEDULE 

From-SVN: r180673
This commit is contained in:
Revital Eres 2011-10-30 05:12:53 +00:00 committed by Revital Eres
parent 6908120ace
commit cc1efdff70
2 changed files with 27 additions and 2 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2011-10-30 Revital Eres <revital.eres@linaro.org>
* modulo-sched.c (generate_prolog_epilog): Mark prolog and epilog
as BB_DISABLE_SCHEDULE.
(mark_loop_unsched): New function.
(sms_schedule): Call it.
2011-10-29 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
PR target/50617

22
gcc/modulo-sched.c
View File

@ -1173,6 +1173,8 @@ generate_prolog_epilog (partial_schedule_ptr ps, struct loop *loop,
/* Put the prolog on the entry edge. */
e = loop_preheader_edge (loop);
split_edge_and_insert (e, get_insns ());
if (!flag_resched_modulo_sched)
e->dest->flags |= BB_DISABLE_SCHEDULE;
end_sequence ();
@ -1186,9 +1188,24 @@ generate_prolog_epilog (partial_schedule_ptr ps, struct loop *loop,
gcc_assert (single_exit (loop));
e = single_exit (loop);
split_edge_and_insert (e, get_insns ());
if (!flag_resched_modulo_sched)
e->dest->flags |= BB_DISABLE_SCHEDULE;
end_sequence ();
}
/* Mark LOOP as software pipelined so the later
scheduling passes don't touch it. */
static void
mark_loop_unsched (struct loop *loop)
{
unsigned i;
basic_block *bbs = get_loop_body (loop);
for (i = 0; i < loop->num_nodes; i++)
bbs[i]->flags |= BB_DISABLE_SCHEDULE;
}
/* Return true if all the BBs of the loop are empty except the
loop header. */
static bool
@ -1714,9 +1731,10 @@ sms_schedule (void)
permute_partial_schedule (ps, g->closing_branch->first_note);
/* Mark this loop as software pipelined so the later
scheduling passes doesn't touch it. */
scheduling passes don't touch it. */
if (! flag_resched_modulo_sched)
g->bb->flags |= BB_DISABLE_SCHEDULE;
mark_loop_unsched (loop);
/* The life-info is not valid any more. */
df_set_bb_dirty (g->bb);