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cfghooks.c (make_forwarder_block): Use direct computation to get fall-through edge's count and frequency.

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2014-05-16  Dehao Chen  <dehao@google.com>

	* cfghooks.c (make_forwarder_block): Use direct computation to
	get fall-through edge's count and frequency.

From-SVN: r210528
This commit is contained in:
Dehao Chen 2014-05-16 20:40:29 +00:00 • committed by Dehao Chen
parent 870c7fa03a
commit b0e66512ee
2 changed files with 11 additions and 10 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2014-05-16 Dehao Chen <dehao@google.com>
* cfghooks.c (make_forwarder_block): Use direct computation to
get fall-through edge's count and frequency.
2014-02-07 Benno Schulenberg <bensberg@justemail.net>
* config/arc/arc.c (arc_init): Fix typo in error message.

16
gcc/cfghooks.c
View file

@ -833,6 +833,9 @@ make_forwarder_block (basic_block bb, bool (*redirect_edge_p) (edge),
fallthru = split_block_after_labels (bb);
dummy = fallthru->src;
dummy->count = 0;
dummy->frequency = 0;
fallthru->count = 0;
bb = fallthru->dest;
/* Redirect back edges we want to keep. */
@ -842,20 +845,13 @@ make_forwarder_block (basic_block bb, bool (*redirect_edge_p) (edge),
if (redirect_edge_p (e))
{
dummy->frequency += EDGE_FREQUENCY (e);
dummy->count += e->count;
fallthru->count += e->count;
ei_next (&ei);
continue;
}
dummy->frequency -= EDGE_FREQUENCY (e);
dummy->count -= e->count;
if (dummy->frequency < 0)
dummy->frequency = 0;
if (dummy->count < 0)
dummy->count = 0;
fallthru->count -= e->count;
if (fallthru->count < 0)
fallthru->count = 0;
e_src = e->src;
jump = redirect_edge_and_branch_force (e, bb);
if (jump != NULL)