* cgraph.c (cgraph_set_nothrow_flag_1): Update cgraph after
	setting the nothrow flag.
	* ipa-reference.c (propagate): Skip aliases.
	* ipa-pure-const.c (propagate_pure_const): Skip aliases.
	(propagate_nothrow): Skip aliases; do not update cgraph.
	(local_pure_const): Do not update cgraph.
	* tree-profile.c (tree_profiling): Do fixup_cfg.

From-SVN: r174929