[llvm] r199147 - Fix uninitialized warning in llvm/lib/IR/DataLayout.cpp.

[Rafael Espíndola]

> +; RUN: opt < %s
> +; XFAIL: *

It is probably better to:
* use 'not' instead of XFAIL
* use llvm-as instead of opt
* check the printed error message.

Thanks,
Rafael