rs6000.md (movsi_internal1): Add nop mnemonic.

rs6000.md (movsi_internal1): Add nop mnemonic.

        * config/rs6000/rs6000.md (movsi_internal1): Add nop mnemonic.
        (movhi_internal): Same.
        (movqi_internal): Same.
        (movdi_internal64): Same.

        * config/rs6000/t-ppccomm (MULTILIB_MATCHES_FLOAT): Add mcpu=405.

        * config/rs6000/xcoff.h (SKIP_ASM_OP): Define.
        (ASM_OUTPUT_SKIP): Use it.  SIZE unsigned.
        (COMMON_ASM_OP): Define.
        (ASM_OUTPUT_ALIGNED_COMMON): Use it.  SIZE unsigned.
        Use ALIGN parameter.
        (LOCAL_COMMON_ASM_OP): Define.
        (ASM_OUTPUT_LOCAL): Use it.  SIZE unsigned.

From-SVN: r56011