cgraphunit.c (ipa_passes): Handle flag_generate_offload.

cgraphunit.c (ipa_passes): Handle flag_generate_offload.

gcc/
	* cgraphunit.c (ipa_passes): Handle flag_generate_offload.
	(symbol_table::compile): Set flag_generate_offload if there is something
	to offload.
	* common.opt (flag_generate_offload): New Variable declaration.
	* dwarf2out.c (dwarf2out_finish): Handle flag_generate_offload.
	* ipa-inline-analysis.c (inline_generate_summary): Do not skip if
	flag_generate_offload is set.
	* lto-streamer.c (gate_lto_out): Handle flag_generate_offload.
	* passes.c (ipa_write_summaries): Do not skip if flag_generate_offload
	is set.
	* toplev.c (compile_file): Emit LTO marker if offload info has been
	previously emitted.  Do not emit lto_slim marker if
	flag_generate_offload is without flag_generate_lto.
	* tree.c (free_lang_data): Do not skip if flag_generate_offload is set.

From-SVN: r218147