* haifa-sched.c (reemit_other_notes): New.
        (schedule_block): Use it.
        * sched-ebb.c (schedule_ebbs): Call remove_unnecessary_notes.
        * sched-rgn.c (schedule_insns): Likewise.
        * cfglayout.c (remove_scope_notes): Handle removing note at
        the end of the insn chain.
        * function.c (debug_find_var_in_block_tree): New.

        * gcc.dg/debug-1.c, gcc.dg/debug-2.c: New.

From-SVN: r48333