Re: [PATCH] perf/x86/intel: Mark expected switch fall-throughs

Nathan Chancellor
2019-06-26T19:00:36Z

On Wed, Jun 26, 2019 at 05:18:37PM +0200, Thomas Gleixner wrote:
> tarball with log and the preprocessed source and run scripts:
>
> https://tglx.de/~tglx/tc-crash.tar.bz2
>
> The machine runs up to date debian stretch which has backports enabled and
> I just used the install command from the github project page you linked
> to. Getting started section.
>
> Thanks,
>
> tglx

Great, thank you! It explodes during lowering, which is a backend issue
so that's fun :/

My guess is that this is a problem with -march=native on that version of
LLVM (since a newer one works). Could you try this patch that makes that
opt-in and see if that fixes it?

https://github.com/nathanchance/tc-build/commit/9f1ae41cd4246f9e4d011542f094aa0df2c069b4

Cheers,
Nathan