RFC: Support non-standard extension (call via casted function pointer)

[Jeff Law]

On 01/26/2016 03:59 AM, John Paul Adrian Glaubitz wrote:
> On 01/26/2016 11:07 AM, Andreas Schwab wrote:
>> John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> writes:
>>
>>> Having gcc allow to work with such code would actually allow us
>>> to bootstrap ghc on m68k again which would be awesome :).
>>
>> The ghc code just needs to be fixed to not lie in such a blatant way.
>> Just like it was changed when ppc64le flagged this as crap code.
>
> I could just find one bug report which mentions a fix for ppc64el [1],
> are you talking about this one?
>
> If this bug is actually the same as the m68k bug, why is ghc still
> working fine on ppc64el? Does ppc64el actually have separate address
> and data registers?
Ignore other targets.  There's nothing really shared across them when it 
comes to the low level implementation details of an ABI like this.

jeff