cgraph.c (dump_cgraph_node): Dump same_comdat_group, only_called_at_startup and only_called_at_exit.

	* cgraph.c (dump_cgraph_node): Dump same_comdat_group,
	only_called_at_startup and only_called_at_exit.
	(cgraph_propagate_frequency): Compute only_called_at_startup and 
	only_called_at_exit.
	* cgraph.h (struct cgraph_node): New fileds only_called_at_startup and
	only_called_at_exit.
	* lto-cgraph.c (lto_output_node, input_overwrite_node): Stream the new
	flags.
	* predict.c (compute_function_frequency): Initialize the new flags.

From-SVN: r165560