lto-cgraph.c (asm_nodes_output): Make global.

	* lto-cgraph.c (asm_nodes_output): Make global.
	* lto-wrapper.c (run_gcc): Pass down paralelizm to WPA.
	* gcc.c (AS_NEEDS_DASH_FOR_PIPED_INPUT): Allow WPA
	parameter
	(driver_handle_option): Handle OPT_fwpa.

From-SVN: r207516

gcc/lto-streamer.h

@@ -873,6 +873,7 @@ void lto_output_location (struct output_block *, struct bitpack_d *, location_t)
 
 
 /* In lto-cgraph.c  */
+extern bool asm_nodes_output;
 lto_symtab_encoder_t lto_symtab_encoder_new (bool);
 int lto_symtab_encoder_encode (lto_symtab_encoder_t, symtab_node *);
 void lto_symtab_encoder_delete (lto_symtab_encoder_t);