re PR rtl-optimization/56466 (ICE in verify_loop_structure, at cfgloop.c:1629 (loop with header n not in loop tree !))

        PR rtl-optimization/56466
        * loop-unroll.c (unroll_and_peel_loops): Call fix_loop_structure
        if we're changing a loop.
        (peel_loops_completely): Likewise.

From-SVN: r196335