2014-09-05  Richard Biener  <rguenther@suse.de>

	* cfgloop.c (mark_loop_for_removal): New function.
	* cfgloop.h (mark_loop_for_removal): Declare.
	* cfghooks.c (delete_basic_block): Use mark_loop_for_removal.
	(merge_blocks): Likewise.
	(duplicate_block): Likewise.
	* except.c (sjlj_emit_dispatch_table): Likewise.
	* tree-eh.c (cleanup_empty_eh_merge_phis): Likewise.
	* tree-ssa-threadupdate.c (ssa_redirect_edges): Likewise.
	(thread_through_loop_header): Likewise.

From-SVN: r214942