* rs6000.h (PREDICATE_CODES): Add CONSTANT_P_RTX.
        * rs6000.md (movsi, movdi): Add CONSTANT_P_RTX.
        * rs6000.c (short_cint_operand): Add CONSTANT_P_RTX.
        (u_short_cint_operand): Same.
        (reg_or_cint_operand): Same.
        (logical_operand): Same.
        (input_operand): Same.
        (reg_or_short_operand): Use u_short_cint_operand.

From-SVN: r21323