*** old/src/share/vm/opto/graphKit.hpp	Wed Feb  4 16:14:26 2009
--- new/src/share/vm/opto/graphKit.hpp	Wed Feb  4 16:14:25 2009

*** 81,90 ****
--- 81,102 ----
    Node* longcon(jlong con)      const { return _gvn.longcon(con); }
    Node* makecon(const Type *t)  const { return _gvn.makecon(t); }
    Node* zerocon(BasicType bt)   const { return _gvn.zerocon(bt); }
    // (See also macro MakeConX in type.hpp, which uses intcon or longcon.)
  
+   // Helper for byte_map_base
+   Node* byte_map_base_node() {
+     // Get base of card map
+     CardTableModRefBS* ct = (CardTableModRefBS*)(Universe::heap()->barrier_set());
+     assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust users of this code");
+     if (ct->byte_map_base != NULL) {
+       return makecon(TypeRawPtr::make((address)ct->byte_map_base));
+     } else {
+       return null();
+     }
+   }
+ 
    jint  find_int_con(Node* n, jint value_if_unknown) {
      return _gvn.find_int_con(n, value_if_unknown);
    }
    jlong find_long_con(Node* n, jlong value_if_unknown) {
      return _gvn.find_long_con(n, value_if_unknown);