Reducing compile-time warnings in HPVM tensor runtime

llvm/projects/hpvm-tensor-rt/dnn_sources/include/utils.h

...ojects/hpvm-tensor-rt/dnn_sources/src/alexnet2_cifar10.cc

...rojects/hpvm-tensor-rt/dnn_sources/src/alexnet_cifar10.cc

llvm/projects/hpvm-tensor-rt/dnn_sources/src/fc2_clipped.cc

llvm/projects/hpvm-tensor-rt/dnn_sources/src/fc3_clipped.cc

llvm/projects/hpvm-tensor-rt/dnn_sources/src/fc4_clipped.cc

llvm/projects/hpvm-tensor-rt/dnn_sources/src/lenet_front.cc

llvm/projects/hpvm-tensor-rt/dnn_sources/src/lenet_keras.cc

llvm/projects/hpvm-tensor-rt/tensor_runtime/include/debug.h

llvm/projects/hpvm-tensor-rt/tensor_runtime/include/error.h

...pvm-tensor-rt/tensor_runtime/include/half_precision_api.h

...ects/hpvm-tensor-rt/tensor_runtime/include/op_overheads.h

...ts/hpvm-tensor-rt/tensor_runtime/include/tensor_runtime.h

...cts/hpvm-tensor-rt/tensor_runtime/include/tensor_utils.cu

...jects/hpvm-tensor-rt/tensor_runtime/src/tensor_runtime.cu