Merge branch 'approx_hpvm' of gitlab.engr.illinois.edu:llvm/hpvm into approx_hpvm

llvm/projects/hpvm-tensor-rt/README.md

llvm/projects/hpvm-tensor-rt/bin/setup_cuda_llvm_paths.sh

llvm/projects/hpvm-tensor-rt/bin/setup_jetson.sh

llvm/projects/hpvm-tensor-rt/build_pldi/table_generator.py

...hpvm-tensor-rt/opentuner/autotuner/measure_confidence2.py

...ojects/hpvm-tensor-rt/opentuner/autotuner/pareto_curve.py

...ects/hpvm-tensor-rt/opentuner/autotuner/promise_tuner3.py

...pvm-tensor-rt/tensor_runtime/include/tensor_signatures.cc

llvm/projects/soc_simulator/src/driver_new_config.py