# HG changeset patch
# User Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
# Date 1424647763 -3600
# Node ID 3be278f50e4bef5d470ce5ddc6e937e9e7fe7f93
# Parent  0362d64c0cd4d2fc134585cc0969263bb73f5959
Reenable usage dropped to zero listener.

diff -r 0362d64c0cd4 -r 3be278f50e4b graal/com.oracle.graal.graph/src/com/oracle/graal/graph/Node.java
--- a/graal/com.oracle.graal.graph/src/com/oracle/graal/graph/Node.java	Mon Feb 23 00:24:12 2015 +0100
+++ b/graal/com.oracle.graal.graph/src/com/oracle/graal/graph/Node.java	Mon Feb 23 00:29:23 2015 +0100
@@ -616,9 +616,8 @@
         if (graph != null) {
             assert !graph.isFrozen();
             NodeEventListener listener = graph.nodeEventListener;
-            if (listener != null) {
-                // System.out.println("usage dropped to zero: " + node);
-                // listener.usagesDroppedToZero(node);
+            if (listener != null && node.isAlive()) {
+                listener.usagesDroppedToZero(node);
             }
             if (Fingerprint.ENABLED) {
                 Fingerprint.submit("%s: %s", NodeEvent.ZERO_USAGES, node);