# HG changeset patch
# User Christian Wimmer <christian.wimmer@oracle.com>
# Date 1352509108 28800
# Node ID 2ec25815d84e41e3f14cd54b87b3e840dc804653
# Parent  dc7cd6885f07050e8aedca42b4f05c30dedd1cfc
When InstanceOfNode is lowered to always true or always false condition, then the no longer used branch needs to be removed from graph.

diff -r dc7cd6885f07 -r 2ec25815d84e graal/com.oracle.graal.snippets/src/com/oracle/graal/snippets/InstanceOfSnippetsTemplates.java
--- a/graal/com.oracle.graal.snippets/src/com/oracle/graal/snippets/InstanceOfSnippetsTemplates.java	Fri Nov 09 16:57:29 2012 -0800
+++ b/graal/com.oracle.graal.snippets/src/com/oracle/graal/snippets/InstanceOfSnippetsTemplates.java	Fri Nov 09 16:58:28 2012 -0800
@@ -272,7 +272,10 @@
         }
 
         private static void connectEnds(MergeNode merge, List<EndNode> ends, BeginNode successor) {
-            if (ends.size() == 1) {
+            if (ends.size() == 0) {
+                // InstanceOf has been lowered to always true or always false - this successor is therefore unreachable.
+                GraphUtil.killCFG(successor);
+            } else if (ends.size() == 1) {
                 EndNode end = ends.get(0);
                 ((FixedWithNextNode) end.predecessor()).setNext(successor);
                 merge.removeEnd(end);