--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/SystemSubstitutions.java	Tue Mar 26 10:50:50 2013 +0100
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/SystemSubstitutions.java	Tue Mar 26 10:51:42 2013 +0100
@@ -65,5 +65,11 @@
     }
 
     @NodeIntrinsic(value = RuntimeCallNode.class, setStampFromReturnType = true)
-    public static native long callLong(@ConstantNodeParameter Descriptor descriptor);
+    public static long callLong(@ConstantNodeParameter Descriptor descriptor) {
+        if (descriptor == JAVA_TIME_MILLIS) {
+            return System.currentTimeMillis();
+        }
+        assert descriptor == JAVA_TIME_NANOS;
+        return System.nanoTime();
+    }
 }