[AArch64] Let aliased instructions be their preferred form.

[Matthew Wahab]

On 27/11/15 12:33, Nick Clifton wrote:
> Hi Matthew,
>
>> This patch includes the instruction being aliased in the list of
>> alternatives which is searched when considering which form to use.
>
> Are there no tests that could demonstrate this problem and your solution to it ?
>

I don't there's any test that could be done using the existing instructions. The 
aliasing change is needed for the REV64 alias of the REV instruction 
(https://sourceware.org/ml/binutils/2015-11/msg00222.html) patch. That includes tests 
that check that the instruction REV is preferred over its aliases so are also  a test 
of this patch (which should probably have been sent as part of the BFM, REV patch set).

Matthew