re PR target/77834 (ICE: in make_decl_rtl, at varasm.c:1311 with -O -ftree-pre -mstringop-strategy=libcall)

	PR target/77834
	* alias.c (nonoverlapping_memrefs_p): If one decl is
	FUNCTION_DECL or LABEL_DECL and the other is not, return 1.

From-SVN: r241905