Post-commit compilation fails with undefined reference to `__exp10'

[sommerlukas]

Describe the bug

Compilation of DPC++ itself fails in the post-commit pipeline.

The error message is:

AMDGPULibCalls.cpp:(.text._ZN4llvm14AMDGPULibCalls22evaluateScalarMathFuncERKNS_13AMDGPULibFuncERdS4_PNS_8ConstantES6_+0x31e): undefined reference to `__exp10'

To reproduce

For example, see post-commit pipeline here: https://github.com/intel/llvm/actions/runs/8506162269/job/23295912063

Environment

Post-commit pipeline on Linux

Additional context

No response

[sommerlukas]

@jsji As this started to fail soon after the pulldown last week (#13103), do you think there's a chance of this being related to the pulldown?

[al42and]

I have a similar issue when compiling code with DPC++ (DPC++ itself builds fine somehow). 9848fa4 seems to be the culprit.

UPD: It was reverted upstream, so another pulldown should solve the problem.

[jsji]

I have a similar issue when compiling code with DPC++ (DPC++ itself builds fine somehow). 9848fa4 seems to be the culprit.

UPD: It was reverted upstream, so another pulldown should solve the problem.

Thanks @al42and , yes, eefef900c6a24f2acd is latest pulldown. #13190

[bader]

@sommerlukas, #13190 is merged. Please, close the issue if the problem is fixed.

[sommerlukas]

@bader @jsji Post-commit for the pulldown in #13190 failed with the same error message as described above, so it seems that the pulldown did not fix the issue.

https://github.com/intel/llvm/actions/runs/8510917365/job/23309509875

[jsji]

@bader @jsji Post-commit for the pulldown in #13190 failed with the same error message as described above, so it seems that the pulldown did not fix the issue.

https://github.com/intel/llvm/actions/runs/8510917365/job/23309509875

Hmm... If so, then the culprit commit is NOT 9848fa4. Or this is CI env issue.

[jsji]

I tried to do a self-build locally, but my build passed.

/iusers/jinsongj/llvm/build# /iusers/jinsongj/llvm/install/bin/clang++ -v
clang version 19.0.0git (https://github.com/intel/llvm.git fce067000ae1d9893410e6b04ebf60d3f7df9f86)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /iusers/jinsongj/llvm/install/bin
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
/iusers/jinsongj/llvm/build# grep CMAKE_C.*COMPILER: CMakeCache.txt
CMAKE_CXX_COMPILER:FILEPATH=/iusers/jinsongj/llvm/install/bin/clang++
CMAKE_C_COMPILER:FILEPATH=/iusers/jinsongj/llvm/install/bin/clang
/iusers/jinsongj/llvm/build# objdump -t lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/AMDGPULibCalls.cpp.o|grep exp10
0000000000000000 l     O .rodata._ZL9tbl_exp10  0000000000000030 _ZL9tbl_exp10
0000000000000000 l    d  .rodata._ZL9tbl_exp10  0000000000000000 .rodata._ZL9tbl_exp10

[jsji]

I am able to reproduce the failures using old SYCL driver.

root@pod-ub22l-scsel-clx-20:/iusers/jinsongj/llvm/build# clang++ -v
clang version 19.0.0git (https://github.com/intel/llvm.git 5f2411c2230f1f2a80f1fb13503f405eb357c368)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /iusers/jinsongj/llvm/install/bin
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
root@pod-ub22l-scsel-clx-20:/iusers/jinsongj/llvm/build# objdump -t lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/AMDGPULibCalls.cpp.o|grep exp10
0000000000000000 l     O .rodata._ZL9tbl_exp10  0000000000000030 _ZL9tbl_exp10
0000000000000000 l    d  .rodata._ZL9tbl_exp10  0000000000000000 .rodata._ZL9tbl_exp10
0000000000000000         *UND*  0000000000000000 __exp10

[jsji]

  # Docker image has last nightly pre-installed and added to the PATH
  build_image: "ghcr.io/intel/llvm/sycl_ubuntu2204_nightly:build"

Ah.. Looks like we ONLY update the build compiler (clang++) in nightly, that is why the post-commit CI still failing.
We should be fine once we have the nightly container updated to include the new pulldown commits.

[jsji]

And unfortunately, the latest nightly docker image is not updated due to a recent bug.

https://github.com/intel/llvm/actions/runs/8503213589/job/23288710904

[jsji]

#13252 to fix the nightly docker image out of date issue.