[llvm-dev] JITted code and thread-local storage

[Philip Reames via llvm-dev]

We use GS based addressing in our code just fine.  We have a home grown 
version of TLS, but I believe the principal mechanisms needed for the 
Linux x86-64 version are similar.  The key thing you need is to use the 
right address space (256 = GS, 257 = FS IRC) when describing the memory 
locations.

Philip

On 08/17/2016 09:25 PM, Keno Fischer via llvm-dev wrote:
> I had tried this in https://reviews.llvm.org/D8815, but we've since 
> switched to a home grown TLS implementation, so I currently don't have 
> a need for this.
>
> On Thu, Aug 18, 2016 at 12:17 AM, Alex Denisov via llvm-dev 
> <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
>
>     /cc Lang Hames
>
>     > On 17 Aug 2016, at 19:27, Antoine Pitrou via llvm-dev
>     <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
>     >
>     >
>     > Hello,
>     >
>     > Am I right in thinking that MCJIT doesn't support thread-local
>     > variables (at least not on Linux x86-64)?
>     >
>     > Is there any plan or pending PR to support it (either in MCJIT or in
>     > ORC)?
>     >
>     > Thank you,
>     >
>     > Regards
>     >
>     > Antoine.
>     >
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