bb-reorder.c (better_edge_p): Fix handling of uninitialized probability.

* bb-reorder.c (better_edge_p): Fix handling of uninitialized probability. From-SVN: r249966

bb-reorder.c (better_edge_p): Fix handling of uninitialized probability.
* bb-reorder.c (better_edge_p): Fix handling of uninitialized probability. From-SVN: r249966
4741e46d · Jan Hubicka · Jan Hubicka · e5d81167 · 4741e46d · 4741e46d
Commit 4741e46d authored Jul 04, 2017 by Jan Hubicka Committed by Jan Hubicka Jul 04, 2017
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gcc/bb-reorder.c
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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2017-07-04  Jan Hubicka  <hubicka@ucw.cz>
+
+	* bb-reorder.c (better_edge_p): Fix handling of uninitialized
+	probability.
+
 2017-07-04  Richard Sandiford  <richard.sandiford@linaro.org>

 	PR tree-optimization/81292

--- a/gcc/bb-reorder.c
+++ b/gcc/bb-reorder.c
@@ -957,7 +957,7 @@ better_edge_p (const_basic_block bb, const_edge e, profile_probability prob,
    return !cur_best_edge
 	   || cur_best_edge->dest->index > e->dest->index;

-  if (prob > best_prob + diff_prob)
+  if (prob > best_prob + diff_prob || !best_prob.initialized_p ())
    /* The edge has higher probability than the temporary best edge.  */
    is_better_edge = true;
  else if (prob < best_prob - diff_prob)