Transparent alias suport part 6 (lto-cgraph fixes)

[Jan Hubicka]

Hi,
this patch modifies lto-cgraph to ship the alias target into every partition
that use the alias.  This is again needed to keep the information that the
two declarations are in fact in same place so we can fix alias.c

Honza

        * lto-cgraph.c (compute_ltrans_boundary): Add transparent alias targets
        into the boundary.
Index: lto-cgraph.c
===================================================================
--- lto-cgraph.c        (revision 231425)
+++ lto-cgraph.c        (working copy)
@@ -972,6 +972,15 @@ compute_ltrans_boundary (lto_symtab_enco
       if (cnode
          && cnode->thunk.thunk_p)
        add_node_to (encoder, cnode->callees->callee, false);
+      while (node->transparent_alias && node->analyzed)
+       {
+         node = node->get_alias_target ();
+         if (is_a <cgraph_node *> (node))
+           add_node_to (encoder, dyn_cast <cgraph_node *> (node),
+                        false);
+         else
+           lto_symtab_encoder_encode (encoder, node);
+       }
     }
   lto_symtab_encoder_delete (in_encoder);
   return encoder;