[Patch, AArch64] Add support for alias instructions SXTL, SXTL2, UXTL and UXTL2

[Marcus Shawcroft]

On 30/01/13 14:27, Yufeng Zhang wrote:
> On 01/30/13 13:12, nick clifton wrote:
>> Hi Yufeng,
>>
>>> include/opcode/
>>> 2013-01-30  Yufeng Zhang<yufeng.zhang@arm.com>
>>>
>>>        * aarch64.h (aarch64_op): Add OP_SXTL, OP_SXTL2, OP_UXTL and OP_UXTL2.
>>>
>>> opcodes/
>>> 2013-01-30  Yufeng Zhang<yufeng.zhang@arm.com>
>>>
>>>        * aarch64-tbl.h (aarch64_opcode_table): Flag sshll, sshll2, ushll and
>>>        ushll2 with F_HAS_ALIAS.  Add entries for sxtl, sxtl2, uxtl and uxtl2.
>>>        * aarch64-asm.c (convert_xtl_to_shll): New function.
>>>        (convert_to_real): Handle OP_SXTL, OP_SXTL2, OP_UXTL and OP_UXTL2 by
>>>        calling convert_xtl_to_shll.
>>>        * aarch64-dis.c (convert_shll_to_xtl): New function.
>>>        (convert_to_alias): Handle OP_SXTL, OP_SXTL2, OP_UXTL and OP_UXTL2 by
>>>        calling convert_shll_to_xtl.
>>>        * aarch64-asm-2.c: Re-generate.
>>>        * aarch64-dis-2.c: Re-generate.
>>>        * aarch64-opc-2.c: Re-generate.
>>>
>>> gas/testsuite/
>>> 2013-01-30  Yufeng Zhang<yufeng.zhang@arm.com>
>>>
>>>        * gas/aarch64/alias.s: Add new tests.
>>>        * gas/aarch64/alias.d: Update.
>>>        * gas/aarch64/no-aliases.d: Update.
>>
>> Approved for mainline - please apply.
>
> Thanks!  Is it OK for the 2.23 branch?  The patch is essentially a bug
> fix, adding support for the missing alias instructions.
>
> Thanks,
> Yufeng
>

I agree, this fix adds missing support for an architectural alias.  The 
patch looks low risk, therefore I would like to see it included on the 
2.23 branch.

Cheers
/Marcus