[llvm] r209638 - [PPC] Use alias symbols in address computation.

[Rafael Espíndola]

>> URL: http://llvm.org/viewvc/llvm-project?rev=209638&view=rev
>> Log:
>> [PPC] Use alias symbols in address computation.
>>
>> This seems to match what gcc does for ppc and what every other llvm
>> backend does.
>
> Unfortunately, this turns out not to be such a good idea... it completely breaks self-hosting on ppc64/Linux (we can't even compile a TableGen that doesn't segfault)). I've reverted this for now.

Do you have a reduce testcase? If not I can try a bootstrap in gcc110.

Cheers,
Rafael