[Openmp-dev] LIT failure: clang/test/Driver/openmp-offload-gpu.c

[Shilei Tian via Openmp-dev]

It’s clang driver test, so it doesn’t need to have OpenMP enabled. On Phab, IIRC, by default it’s ALL. I did remember I updated the patch because of the driver case, and later it all passed.

Regards,
Shilei

> On Mar 18, 2021, at 5:14 PM, Joachim Protze <protze.joachim at gmail.com> wrote:
> 
> The REQUIRES lines at the top of the file specify, that all targets need
> to be available so that the test is supported.
> 
> To fulfill the dependency with the bitcode library, this should be added
> as another REQUIREment of the test.
> 
> I assume that phabricator and your local test builds include building
> the OpenMP runtime/project?
> 
> - Joachim
> 
> 
> Am 18.03.21 um 21:38 schrieb Shilei Tian via Openmp-dev:
>> Hi Kelvin,
>> 
>> If only building with target PPC, this case will not be run because clang cannot process CUDA code.
>> I think it’s related to our recent change that the bitcode library is required when building OpenMP program so I updated the driver. However it passed the test before (locally and on Phab). I’ll try to reproduce and fix it accordingly.
>> 
>> Regards,
>> Shilei
>> 
>>> On Mar 18, 2021, at 3:14 PM, Kelvin Li via Openmp-dev <openmp-dev at lists.llvm.org> wrote:
>>> 
>>> Hi,
>>> 
>>> I don't know the LIT test infrastructure well enough.  Recently, openmp-offload-gpu.c started to fail in our downstream test.  I find that if I build with LLVM_TARGETS_TO_BUILD="PowerPC", the test is "UNSUPPORTED".  If I build with LLVM_TARGETS_TO_BUILD="ALL", the test fails.  In both cases, NO -DLLVM_ENABLE_RUNTIMES="openmp" is specified in the cmake command
>>> 
>>> Any clues of the reason?
>>> 
>>> The error message:
>>> 
>>> Exit Code: 1
>>> Command Output (stderr):
>>> --
>>> llvm-project/clang/test/Driver/openmp-offload-gpu.c:150:25: error: CHK-NOLIBDEVICE-NOT: excluded string found in input
>>> // CHK-NOLIBDEVICE-NOT: error:{{.*}}sm_60
>>>                        ^
>>> <stdin>:6:8: note: found here
>>> clang: error: No library 'libomptarget-nvptx-sm_60.bc' found in the default clang lib directory or in LIBRARY_PATH. Please use --libomptarget-nvptx-bc-path to specify nvptx bitcode library.
>>>       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> 
>>> Kelvin
>>> 
>>> _______________________________________________
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>>> Openmp-dev at lists.llvm.org
>>> https://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev
>> 
>> 
>> 
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> 

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