llvm dev - Aug 2016 - JITted code and thread-local storage

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.

/cc Lang Hames
> On 17 Aug 2016, at 19:27, Antoine Pitrou via llvm-dev <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.
> 
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 496 bytes
Desc: Message signed with OpenPGP using GPGMail
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20160818/b0e63a0c/attachment.sig>

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> wrote:
> /cc Lang Hames
>
> > On 17 Aug 2016, at 19:27, Antoine Pitrou via llvm-dev <
> 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.
> >
> > _______________________________________________
> > LLVM Developers mailing list
> > llvm-dev at lists.llvm.org
> > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20160818/1956cf65/attachment.html>

Hi Antoine,

I don't believe there's any ORC PR for this yet.

Keno - your patch allowed JIT'd code to access TLVs defined in the host
process, right? That would be nice to have eventually, but we're probably
best off requiring calls to accessors in the host for now.

I'd like to see support for TLV definitions in JIT'd code, but I
haven't
been able to find time to work on that one yet.

Cheers,
Lang.


On Wed, Aug 17, 2016 at 10:27 AM, Antoine Pitrou via llvm-dev <
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.
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20160822/fd910db1/attachment-0001.html>

> Keno - your patch allowed JIT'd code to access TLVs defined in the host
process, right? That would be nice to have eventually, but we're probably
best off requiring calls to accessors in the host for now.
correct