i386.c (ix86_expand_builtin): Generate reg for readflags built-in when optimizing.

        * config/i386/i386.c (ix86_expand_builtin): Generate
        reg for readflags built-in when optimizing.
        * config/i386/i386.md (*pushfl<mode>): Rename to ...
        (pushfl<mode>2): This. Fix iterator.
        (*popfl<mode>): Rename to ...
        (*popfl<mode>1): This. Fix iterator.

From-SVN: r205707