* tree-streamer.c (preload_common_nodes): Don't preload
	TI_VA_LIST* for offloading.
	* tree-stdarg.c (pass_stdarg::gate): Disable for ACCEL_COMPILER
	in_lto_p.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>

From-SVN: r220846