* alpha.c (reg_or_6bit_operand): Recognize CONSTANT_P_RTX.
        (reg_or_8bit_operand, cint8_operand, add_operand): Likewise.
        (sext_add_operand, and_operand, or_operand): Likewise.
        (reg_or_cint_operand, some_operand, input_operand): Likewise.
        * alpha.h (PREDICATE_CODES): Add CONSTANT_P_RTX where needed.

From-SVN: r20847