PR target/21051

        * builtins.c (expand_builtin) <BUILT_IN_BOOL_COMPARE_AND_SWAP_*>:
        Use the mode of boolean_type_node when the user doesn't provide one.
        * config/ia64/sync.md (sync_lock_release<I48MODE>): Use operand 1.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@98239 138bc75d-0d04-0410-961f-82ee72b054a4