haifa-sched.c (insn_cost): FREE implies cost 0 and vice versa.

haifa-sched.c (insn_cost): FREE implies cost 0 and vice versa.

        * haifa-sched.c (insn_cost): FREE implies cost 0 and vice versa.
        (adjust_priority): Always call ADJUST_PRIORITY.
        (schedule_insn): Only put insns into the ready at cost 0.
        (schedule_block): Remove redundant initial sort.  Give clock_var
        and can_issue_more to MD_SCHED_REORDER.  Requeue if hazard cost
        is not 0.
        * tm.texi (MD_SCHED_REORDER): Update docs.

        * sparc.h (MD_SCHED_REORDER): Update.  Set CAN_ISSUE_MORE.
        * sparc.c (ultra_reorder_called_this_block): Delete.
        (ultrasparc_sched_init): Don't set it.
        (ultrasparc_sched_reorder): Don't check it.

From-SVN: r28201