# HG changeset patch
# User Christian Wirth <christian.wirth@oracle.com>
# Date 1391596090 -3600
# Node ID c2000a61fb9a052cbad7811609ff9108f06372f9
# Parent  d04be74665fb24531b853c8e3067029019c2b4f4
In ConditionalEliminationPhase, check whether a ValueNode does record usages; caused crashes in FastR

diff -r d04be74665fb -r c2000a61fb9a graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/ConditionalEliminationPhase.java
--- a/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/ConditionalEliminationPhase.java	Wed Feb 05 09:32:30 2014 +0100
+++ b/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/ConditionalEliminationPhase.java	Wed Feb 05 11:28:10 2014 +0100
@@ -639,6 +639,9 @@
         }
 
         private GuardingNode searchAnchor(ValueNode value, ResolvedJavaType type) {
+            if (!value.recordsUsages()) {
+                return null;
+            }
             for (Node n : value.usages()) {
                 if (n instanceof InstanceOfNode) {
                     InstanceOfNode instanceOfNode = (InstanceOfNode) n;