* config/rs6000/rs6000.c (rs6000_expand_compare_and_swapqhi): New.
        (rs6000_split_compare_and_swapqhi): New.
        * config/rs6000/sync.md (sync_compare_and_swap{hi,qi}): New.
        (sync_compare_and_swapqhi_internal): New.
        * config/rs6000/rs6000-protos.h: Declare.

From-SVN: r109226