* config/alpha/alpha.c (emit_unlikely_jump, emit_load_locked,
        emit_store_conditional): Split out from ...
        (alpha_split_atomic_op): ... here.
        (alpha_split_compare_and_swap): New; extract from .md file.
        (alpha_split_lock_test_and_set): Likewise.
        * config/alpha/alpha-protos.h: Update.
        * config/alpha/sync.md (sync_compare_and_swap<I48MODE>): Move
        split code into alpha.c.
        (sync_lock_test_and_set<I48MODE>): Likewise.

From-SVN: r100005