Check-openmp leaves 238 unexpected failures

Below are the results obtained running ninja check-openmp
after the openmp project build on Arm. How much should we
worried?

[...]
  libomp :: worksharing/single/omp_single_nowait.c
  libomp :: worksharing/single/omp_single_private.c

Testing Time: 1.02s
  Unsupported Tests : 7
  Expected Passes : 17
  Expected Failures : 1
  Unexpected Failures: 238
FAILED: projects/openmp/CMakeFiles/check-openmp
cd /fefs/home/r1050/work/build/llvm/202005171006/projects/openmp &&
/usr/bin/python2.7
/fefs/home/r1050/work/build/llvm/202005171006/./bin/llvm-lit -sv
/fefs/home/r1050/work/build/llvm/202005171006/projects/openmp/runtime/test
/fefs/home/r1050/work/build/llvm/202005171006/projects/openmp/libomptarget/test
/fefs/home/r1050/work/build/llvm/202005171006/projects/openmp/tools/archer/tests
ninja: build stopped: subcommand failed.