[flang-rt] Add Assign_omp RT call.#145465

skc7 wants to merge 4 commits intollvm:mainllvm/llvm-project:mainfrom

skc7:skc7/flang_workdistribute_preq_rtskc7/llvm-project:skc7/flang_workdistribute_preq_rtCopy head branch name to clipboard