except.c (duplicate_eh_region_1, [...]): New functions, based on old implementation...

except.c (duplicate_eh_region_1, [...]): New functions, based on old implementation removed with RTL inliner.

	* except.c  (duplicate_eh_region_1, duplicate_eh_region_2,
	duplicate_eh_regions): New functions, based on old
	implementation removed with RTL inliner.
	(reachable_next_level): Modify behaviour pre-inline.
	* except.h (duplicate_eh_regions_map, duplicate_eh_regions):
	Declare.
	* function.h (struct function): Add after_inlining flag.
	* tree-optimize.c (tree_rest_of_compilation): Set it.
	* tree-eh.c (add_stmt_to_eh_region_fn): Initialize hashtable
	when needed.
	* tree-cfg.c (label_to_block_fn): Deal with cases where
	label was never insterted into code.

Co-Authored-By: Jan Hubicka <jh@suse.cz>
Co-Authored-By: Stuart Hastings <stuart@apple.com>
From-SVN: r99625