# HG changeset patch
# User Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
# Date 1432042547 -7200
# Node ID a9b3d1cfdd42e473fc987a2c97ada5bbb2ebf73e
# Parent  fe76bf3867f3f868e449ffe7ae09c5cd901e2cb5
Fixed for CachedGraph utility class.

diff -r fe76bf3867f3 -r a9b3d1cfdd42 graal/com.oracle.graal.graph/src/com/oracle/graal/graph/CachedGraph.java
--- a/graal/com.oracle.graal.graph/src/com/oracle/graal/graph/CachedGraph.java	Tue May 19 15:02:51 2015 +0200
+++ b/graal/com.oracle.graal.graph/src/com/oracle/graal/graph/CachedGraph.java	Tue May 19 15:35:47 2015 +0200
@@ -48,12 +48,19 @@
     }
 
     public G getReadonlyCopy() {
+        if (hasMutableCopy()) {
+            return mutableCopy;
+        }
         return readonlyCopy;
     }
 
+    public boolean hasMutableCopy() {
+        return mutableCopy != null;
+    }
+
     @SuppressWarnings("unchecked")
     public G getMutableCopy(Consumer<Map<Node, Node>> duplicationMapCallback) {
-        if (mutableCopy == null) {
+        if (!hasMutableCopy()) {
             mutableCopy = (G) readonlyCopy.copy(duplicationMapCallback);
         }
         return mutableCopy;