--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/model/TypeSystemData.java	Wed Aug 13 18:06:18 2014 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/model/TypeSystemData.java	Wed Aug 13 18:06:18 2014 +0200
@@ -59,7 +59,7 @@
             for (TypeData typeData : types) {
                 primitiveTypeMirrors.add(typeData.getPrimitiveType());
                 boxedTypeMirrors.add(typeData.getBoxedType());
-                cachedTypes.put(typeData.getPrimitiveType().toString(), typeData);
+                cachedTypes.put(ElementUtils.getUniqueIdentifier(typeData.getPrimitiveType()), typeData);
             }
         }
     }
@@ -154,7 +154,7 @@
     }
 
     public int findType(TypeMirror type) {
-        TypeData data = cachedTypes.get(type.toString());
+        TypeData data = cachedTypes.get(ElementUtils.getUniqueIdentifier(type));
         if (data != null) {
             return data.getIndex();
         }