* flow.c (insn_dead_p): Keep sets to PIC_OFFSET_TABLE_REGNUM
        alive before reload.

        * haifa-sched.c (struct deps): Add in_post_call_group_p.
        (add_dependence): Handle notes between SCHED_GROUP_P insns.
        (remove_dependence): Always define.
        (set_sched_group_p): New.
        (sched_analyze_2): Use it.
        (sched_analyze_insn): Don't special-case naked uses.  Look for
        and extend in_post_call_group_p.
        (sched_analyze): Clear stale SCHED_GROUP_P.  Set in_post_call_group_p.
        (init_deps): Clear in_post_call_group_p.

From-SVN: r34529