Re: [RFC PATCH] LKMM: Add ctrl_dep() macro for control dependency

[Florian Weimer]

* Mathieu Desnoyers:

> One cheap way to achieve said R->W dependency (as well as R->RW on
> architectures which to not reorder R->R) is to ensure that the
> generated assembly contains a conditional branch.

Will any conditional branch do, or is it necessary that it depends in
some way on the data read?

Thanks,
Florian