haifa-sched.c (sched_analyze_1): Use free_list instead of zapping reg_last_uses directly.

haifa-sched.c (sched_analyze_1): Use free_list instead of zapping reg_last_uses directly.

        * haifa-sched.c (sched_analyze_1): Use free_list instead of
        zapping reg_last_uses directly.
        (sched_analyze_2, sched_analyze_insn): Likewise.
        (sched_analyze): Likewise.  Don't clear reg_last_uses on calls.

From-SVN: r27622