2012-11-13  Sriraman Tallam  <tmsriram@google.com>

	* cgraph.c (insert_new_cgraph_node_version): Use cgraph_get_node
	instead of cgraph_get_create_node.
	* config/i386/i386.c (ix86_get_function_versions_dispatcher): Move ifunc
	not supported code to the end.

	* class.c (mark_versions_used): Remove.
	(resolve_address_of_overloaded_function): Call target hook
	for versioned functions. Refactor to call
	get_function_versions_dispatcher.
	* decl.c (duplicate_decls): Add comments.
	* cp/call.c (get_function_version_dispatcher): Expose function.
	(mark_versions_used): Expose function.
	* cp/cp-tree.h (mark_versions_used): New declaration.
	(get_function_version_dispatcher): Ditto.

	* testsuite/g++.dg/mv4.C: Add require ifunc. Change error message.
	* testsuite/g++.dg/mv5.C: Add require ifunc.
	* testsuite/g++.dg/mv6.C: Add require ifunc.

From-SVN: r193486