PR middle-end/58094

	PR middle-end/58094
	* cgraph.h (symtab_semantically_equivalent_p): Declare.
	* tree-tailcall.c: Include ipa-utils.h.
	(find_tail_calls): Use it.
	* ipa-pure-const.c (check_call): Likewise.
	* ipa-utils.c (recursive_call_p): New function.
	* ipa-utils.h (recursive_call_p): Dclare.
	* symtab.c (symtab_nonoverwritable_alias): Fix formatting.
	(symtab_semantically_equivalent_p): New function.
	* Makefile.in (tree-tailcall.o): Update dependencies.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@202316 138bc75d-0d04-0410-961f-82ee72b054a4