# HG changeset patch
# User Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
# Date 1379464901 -7200
# Node ID 7f8c80e317505e2a2ad67356eb2c46c206f406df
# Parent  e9cf2b37c71318e314ef16dad336492411b298fa
Fix GuardingPiNode to preserve checkcast semantics also if value of checkcast is unused.

diff -r e9cf2b37c713 -r 7f8c80e31750 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/GuardingPiNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/GuardingPiNode.java	Wed Sep 18 00:38:19 2013 +0200
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/GuardingPiNode.java	Wed Sep 18 02:41:41 2013 +0200
@@ -81,8 +81,10 @@
             throw new GraalInternalError("Cannot create guards in after-guard lowering");
         }
         GuardingNode guard = tool.createGuard(condition, reason, action, negated);
+        ValueAnchorNode anchor = graph().add(new ValueAnchorNode((ValueNode) guard));
         PiNode pi = graph().unique(new PiNode(object, stamp(), guard));
-        graph().replaceFixedWithFloating(this, pi);
+        replaceAtUsages(pi);
+        graph().replaceFixedWithFixed(this, anchor);
     }
 
     @Override