Hi,
remove_predictions_associated_with_edge currently calls filter_predicitons
passing it equal_edge_p. Becase filter_predictions removes all edges where
filter returns false, the function does exact oposite. Fixed thus.
Bootstrapped/regtested x86_64-linux.
gcc/ChangeLog:
2020-08-02 Jan Hubicka <hubi...@ucw.cz>
* predict.c (filter_predictions): Document semantics of filter.
(equal_edge_p): Rename to ...
(not_equal_edge_p): ... this; reverse semantics.
(remove_predictions_associated_with_edge): Fix.
diff --git a/gcc/predict.c b/gcc/predict.c
index 0a317a7a4ac..2164a06e083 100644
--- a/gcc/predict.c
+++ b/gcc/predict.c
@@ -595,10 +595,11 @@ gimple_predict_edge (edge e, enum br_predictor predictor,
int probability)
}
}
-/* Filter edge predictions PREDS by a function FILTER. DATA are passed
- to the filter function. */
+/* Filter edge predictions PREDS by a function FILTER: if FILTER return false
+ the prediction is removed.
+ DATA are passed to the filter function. */
-void
+static void
filter_predictions (edge_prediction **preds,
bool (*filter) (edge_prediction *, void *), void *data)
{
@@ -627,10 +628,10 @@ filter_predictions (edge_prediction **preds,
/* Filter function predicate that returns true for a edge predicate P
if its edge is equal to DATA. */
-bool
-equal_edge_p (edge_prediction *p, void *data)
+static bool
+not_equal_edge_p (edge_prediction *p, void *data)
{
- return p->ep_edge == (edge)data;
+ return p->ep_edge != (edge)data;
}
/* Remove all predictions on given basic block that are attached
@@ -642,7 +643,7 @@ remove_predictions_associated_with_edge (edge e)
return;
edge_prediction **preds = bb_predictions->get (e->src);
- filter_predictions (preds, equal_edge_p, e);
+ filter_predictions (preds, not_equal_edge_p, e);
}
/* Clears the list of predictions stored for BB. */
