llvm dev - Jun 2019 - is clang9 supporting asm-goto?

Hi *,
I have read several news [1 2 3 ] about clang supporting asm-goto. is that
for real? :)
so I tried to compile the Linux Kernel (master branch) with clang built
from source, the actual version im using is the following:

"""
clang version 9.0.0 (https://github.com/llvm/llvm-project.git
f8ffb926e206982c57d862d12fe0004a135e014c)
"""

but I still get "compiler lacks asm-goto support".
what am I doing wrong?

Thanks,
best.


[1]
https://fosdem.org/2019/schedule/event/llvm_kernel/attachments/slides/3330/export/events/attachments/llvm_kernel/slides/3330/clang_linux_fosdem_19.pdf
[2] https://www.phoronix.com/scan.php?page=news_item&px=LLVM-Asm-Goto-Merged
[3] https://reviews.llvm.org/D56571
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On Fri, Jun 7, 2019 at 10:23 AM Mark Vegans via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
>
> Hi *,
> I have read several news [1 2 3 ] about clang supporting asm-goto. is that
for real? :)
> so I tried to compile the Linux Kernel (master branch) with clang built
from source, the actual version im using is the following:
>
> """
> clang version 9.0.0 (https://github.com/llvm/llvm-project.git
f8ffb926e206982c57d862d12fe0004a135e014c)
> """
>
> but I still get "compiler lacks asm-goto support".
> what am I doing wrong?
see ./scripts/gcc-goto.sh

WIth clang-9 I get:
$ ./scripts/gcc-goto.sh clang-9
<stdin>:13:6: error: 'asm goto' constructs are not supported yet
        asm goto ("" :::: entry);
            ^
1 error generated.
>
> Thanks,
> best.
>
>
> [1]
https://fosdem.org/2019/schedule/event/llvm_kernel/attachments/slides/3330/export/events/attachments/llvm_kernel/slides/3330/clang_linux_fosdem_19.pdf
> [2]
https://www.phoronix.com/scan.php?page=news_item&px=LLVM-Asm-Goto-Merged
> [3] https://reviews.llvm.org/D56571
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev

Hi Mark,

On Fri, 7 Jun 2019 at 08:23, Mark Vegans via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> clang version 9.0.0 (https://github.com/llvm/llvm-project.git
f8ffb926e206982c57d862d12fe0004a135e014c)
Final support seems to have been committed on 3rd June (after being
reverted for a bit), and that commit is from 29th May so I think you
just need to update to an even newer Clang.

Cheers.

Tim.

Thanks correct,  my fault. just updated and rebuilt and now I can compile
the kernel with clang.
good job!


On Fri, Jun 7, 2019 at 7:07 PM Tim Northover <t.p.northover at gmail.com>
wrote:
> Hi Mark,
>
> On Fri, 7 Jun 2019 at 08:23, Mark Vegans via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
> > clang version 9.0.0 (https://github.com/llvm/llvm-project.git
> f8ffb926e206982c57d862d12fe0004a135e014c)
>
> Final support seems to have been committed on 3rd June (after being
> reverted for a bit), and that commit is from 29th May so I think you
> just need to update to an even newer Clang.
>
> Cheers.
>
> Tim.
>
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