[llvm-dev] How to use thread local storage with ORC JIT?

[David Blaikie via llvm-dev]

+Lang Hames <lhames at gmail.com> (though I think he's not got much bandwidth
for a few months - so responses may be delayed)

On Mon, Feb 15, 2021 at 12:07 AM Gaier, Bjoern via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hello everyone,
>
>
>
> I'm using the ORC JIT to load and execute some IR files which I compiled
> with Clang-Cl from some source files - the host is Windows 64bit.
> Apparently, clang decided to generate code using the thread local storage
> for some of the code. When now loading and jitting those files I get the
> following undefined references:
>
> __emutls_get_address
>
> __emutls_v._Init_thread_epoch
>
>
>
> A while ago I was told, that those references are coming from compiler-rt
> - so I build that project and at least I found "__emutls_get_address" in
> the "clang_rt.builtins-x86_64.lib" file. However, I haven't found
> "__emutls_v._Init_thread_epoch" anyway and don't know what to do with this
> symbol.
>
>
>
> Any ideas?
>
>
>
> Also, in case you see double - I asked this question in the LLVM Discord
> already with no big success...
>
>
>
> Kind greetings
>
> Björn
> Als GmbH eingetragen im Handelsregister Bad Homburg v.d.H. HRB 9816,
> USt.ID-Nr. DE 114 165 789 Geschäftsführer: Dr. Hiroshi Nakamura, Dr. Robert
> Plank, Markus Bode, Takashi Nagano, Junichi Tajika, Ergin Cansiz.
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