[LLVMdev] dmb ishld in AArch64

[Tim Northover]

>> Thanks for the IR snippet (I agree, it does look like the order is
>> reasonable there), but it's not really enough to debug the problem. We
>> need an actual Module we can compile and examine to have a hope of
>> finding out what's going on.
>
> You mean the source code I'm compiling?

The whole .ll file you pulled those lines from looks like it would be
most useful (assuming we're right that the IR is sound). If that
fails, we can move further back to the C source in some form or
another.

Cheers.

Tim.