[llvm] r312364 - [AMDGPU] Prevent infinite recursion in DAG.computeKnownBits()

[Davide Italiano via llvm-commits]

On Fri, Sep 1, 2017 at 2:36 PM, Mekhanoshin, Stanislav
<Stanislav.Mekhanoshin at amd.com> wrote:
> Note that actual behavior is hung llc, so automated tools are not a good help.
>
> Stas
>
>

This is not correct. If you look at the first link I sent, you'll see
there are examples using `ulimit -t` to set a timeout, so that the OS
kills the process if it didn't exit already. It returns a special exit
code in this failure mode (137 IIRC, or something like that). You then
can write a delta script.

Thanks,

--
Davide