--- a/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/CompilerDirectives.java	Sun Jul 07 23:32:05 2013 +0200
+++ b/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/CompilerDirectives.java	Sun Jul 07 23:51:52 2013 +0200
@@ -126,4 +126,16 @@
     @Target({ElementType.METHOD})
     public @interface Unsafe {
     }
+
+    /**
+     * Treats the given value as a value of the given class. The class must evaluate to a constant.
+     * 
+     * @param value the value that is known to have the specified type
+     * @param clazz the specified type of the value
+     * @return the value
+     */
+    @Unsafe
+    public static Object unsafeCast(Object value, Class clazz) {
+        return value;
+    }
 }