2013-08-27  Martin Jambor  <mjambor@suse.cz>

	* ipa-prop.h (ipa_pass_through_data): New field type_preserved.
	(ipa_ancestor_jf_data): Likewise.
	(ipa_get_jf_pass_through_agg_preserved): Fix comment typo.
	(ipa_get_jf_pass_through_type_preserved): New function.
	(ipa_get_jf_ancestor_agg_preserved): Fix comment typo.
	(ipa_get_jf_ancestor_type_preserved): New function.
	* ipa-cp.c (ipa_get_jf_pass_through_result): Honor type_preserved
	flag.
	(ipa_get_jf_ancestor_result): Likewise.
	(propagate_vals_accross_pass_through): Use
	ipa_get_jf_pass_through_result to do all the value mappings.
	* ipa-prop.c (ipa_print_node_jump_functions_for_edge): Dump the
	type_preserved flag.
	(ipa_set_jf_cst_copy): New function.
	(ipa_set_jf_simple_pass_through): Set the type_preserved flag.
	(ipa_set_jf_arith_pass_through): Likewise.
	(ipa_set_ancestor_jf): Likewise.
	(compute_complex_assign_jump_func): Set type_preserved instead of
	punting.
	(ipa_compute_jump_functions_for_edge): Likewise.
	(combine_known_type_and_ancestor_jfs): Honor type_preserved.
	(update_jump_functions_after_inlining): Update type_preserved.
	Explicitely create jump functions when combining one with
	pass_through.
	(ipa_write_jump_function): Stream the type_preserved flags.
	(ipa_read_jump_function): Likewise.

From-SVN: r202036