* lower-subreg.c (resolve_simple_move): If called self-recursive,
	do not delete_insn insns that have not yet been emitted, only
	unlink them with remove_insn.
	* df-scan.c (df_insn_delete): Revert r197492.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@198042 138bc75d-0d04-0410-961f-82ee72b054a4