[LLVMdev] [PATCH 0/2 v3] add visibility hidden to tls entry points

[Sedat Dilek]

On Tue, Feb 17, 2015 at 1:55 PM, Sedat Dilek <sedat.dilek at gmail.com> wrote:
> On Tue, Feb 17, 2015 at 10:40 AM, Marc Dietrich <marvin24 at gmx.de> wrote:
>> Patch 1 adds a check for the compilers visibility macro to configure.ac.
>> Patch 2 avoids redefined symbol errors in clang of the tls entry points.
>> Based on a suggestion from Rafael Ávila de Espíndola <rafael.espindola at gmail.com>
>> in http://llvm.org/bugs/show_bug.cgi?id=19778.
>>
>> Tested with gcc 4.9 and clang 3.6(rc)
>>
>> Marc Dietrich (2):
>>   configure: add visibility macro detection to configure
>>   add visibility hidden to tls entry points
>>
>>  configure.ac                | 28 ++++++----------------------
>>  src/mapi/Makefile.am        |  1 +
>>  src/mapi/entry_x86-64_tls.h |  4 ++--
>>  src/mapi/entry_x86_tls.h    |  5 +++--
>>  src/mapi/entry_x86_tsd.h    |  5 +++--
>>  src/util/macros.h           |  6 ++++++
>>  6 files changed, 21 insertions(+), 28 deletions(-)
>>
>
> Tested-by: Sedat Dilek <sedat.dilek at gmail.com> (mesa v10.4.4 with
> llvm-toolchain v3.6.0rc2)
>

Tested-by: Sedat Dilek <sedat.dilek at gmail.com> (mesa v10.4.4 with
llvm-toolchain v3.6.0rc*3* with compiler-rt)

I re-compiled my Linux graphics driver stack with a self-compiled
llvm-toolchain v3.6.0rc3.

libdrm: v2.4.59
mesa: v10.4.4 (plus gallivm-fixes and visibility-macro-detection
support) + configure: --enable-glx-tls
intel-ddx: v2.99.917-149-g09b0ab9b4384

What about renaming your patches to...?

1/2: "configure: add visibility macro detection"
2/2: "mapi: add visibility hidden to tls entry points"

Even 1/2 should reflect it's a code-generation option for compilers
like GCC or LLVM/Clang.
It's up2u.
Please have a look at [1], too.

Thanks.

- Sedat -

[1] https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html ->
"-fvisibility=[default|internal|hidden|protected]"
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