Trunk fails to build on PowerPC

[314/3414] Building NVCC (Device) object projects/openmp/libomptarget/deviceRTLs
/nvptx/CMakeFiles/omptarget-nvptx.dir//common/src/omptarget-nvptx_generated_ta
sk.cu.o
FAILED: projects/openmp/libomptarget/deviceRTLs/nvptx/CMakeFiles/omptarget-nvptx
.dir/
/common/src/omptarget-nvptx_generated_task.cu.o
cd /p/scratch/cpcp0/pcp0151/builds/201912190231/projects/openmp/libomptarget/dev
iceRTLs/nvptx/CMakeFiles/omptarget-nvptx.dir//common/src && /gpfs/software/generic/tools/cmake-3.7.2/bin/cmake -E make_directory /p/scratch/cpcp0/pcp0151/builds/201912190231/projects/openmp/libomptarget/deviceRTLs/nvptx/CMakeFiles/omptarget-nvptx.dir//common/src/. && /gpfs/software/generic/tools/cmake-3.7.2/bin/cmake -D verbose:BOOL=OFF -D build_configuration:STRING=Debug -D generated_file:STRING=/p/scratch/cpcp0/pcp0151/builds/201912190231/projects/openmp/libomptarget/deviceRTLs/nvptx/CMakeFiles/omptarget-nvptx.dir//common/src/./omptarget-nvptx_generated_task.cu.o -D generated_cubin_file:STRING=/p/scratch/cpcp0/pcp0151/builds/201912190231/projects/openmp/libomptarget/deviceRTLs/nvptx/CMakeFiles/omptarget-nvptx.dir//common/src/./omptarget-nvptx_generated_task.cu.o.cubin.txt -P /p/scratch/cpcp0/pcp0151/builds/201912190231/projects/openmp/libomptarget/deviceRTLs/nvptx/CMakeFiles/omptarget-nvptx.dir/__/common/src/omptarget-nvptx_generated_task.cu.o.Debug.cmake
/p/scratch/cpcp0/pcp0151/projects/llvm-project/openmp/libomptarget/deviceRTLs/nvptx/src/target_impl.h(99): error: identifier “__kmpc_impl_activemask” is undefined

/p/scratch/cpcp0/pcp0151/projects/llvm-project/openmp/libomptarget/deviceRTLs/nvptx/src/target_impl.h(100): error: identifier “GetThreadIdInBlock” is undefined

2 errors detected in the compilation of “/tmp/tmpxft_00017704_00000000-6_task.cpp1.ii”.
CMake Error at omptarget-nvptx_generated_task.cu.o.Debug.cmake:278 (message):
Error generating file
/p/scratch/cpcp0/pcp0151/builds/201912190231/projects/openmp/libomptarget/deviceRTLs/nvptx/CMakeFiles/omptarget-nvptx.dir/__/common/src/./omptarget-nvptx_generated_task.cu.o

Now it builds again on PowerPC.