flow.c (count_or_remove_death_notes): Equate NULL with the universal set.

flow.c (count_or_remove_death_notes): Equate NULL with the universal set.

        * flow.c (count_or_remove_death_notes): Equate NULL with the
        universal set.

        * jump.c, reg-stack.c, toplev.c: Revert Oct 27 change.
        * toplev.c (rest_of_compilation): Rebuild CFG immediately before
        dbr_schedule.

        * i386.c (pic_label_no): Delete.
        (ix86_attr_length_default): Don't use single_set to peek
        inside a parallel.

        * recog.c (peephole2_optimize): Allow recog_next_insn to index
        the first insn after bb->end.
        * i386.md (push mem peeps): Scratch is live after evaluation
        of the memory.
        (cmp mem peep): Similarly.

From-SVN: r30269