* cgraph.h (cgraph_node, cgraph_varpool_node): Update docmentation of
in_other_partition.
* lto-cgraph.c (referenced_from_other_partition_p,
reachable_from_other_partition_p): Use in_other_partition flags.
(output_node, output_varpool_node): COMDAT nodes always have private
copies and thus are never used from other partition.
* lto.c (add_cgraph_node_to_partition): Forward declare; walk also
nodes from same comdat group as well as all comdat functions referenced
here.
(add_varpool_node_to_partition, add_references_to_partition): New function.
(lto_1_1_map): Skip COMDAT fnctions/variables; use add_varpool_node_to_partition;
clear aux flags when done.
(lto_promote_cross_file_statics): Do not promote stuff that gets duplicated to
each ltrans.
From-SVN: r161846
