[HIPIFY] Initial cuDNN support

- based on https://github.com/ROCmSoftwarePlatform/hipDNN.
- lit testing was supplemented with CUDA_DNN_ROOT_DIR for cuDNN testing.
- single cuDNN test was added.


[ROCm/hip commit: fe421c89b2]

projects/hip/tests/hipify-clang/lit.cfg

@@ -57,6 +57,8 @@ else:
     run_test_ext = ".sh"
     clang_args += " -isystem'%s'/samples/common/inc"
 
-config.substitutions.append(("%cuda_args", clang_args % (config.cuda_root, config.cuda_sdk_root)))
+clang_args += " -I'%s'/include"
+
+config.substitutions.append(("%cuda_args", clang_args % (config.cuda_root, config.cuda_sdk_root, config.cuda_dnn_root)))
 config.substitutions.append(("hipify", '"' + hipify_path + "/hipify-clang" + '"'))
 config.substitutions.append(("%run_test", '"' + config.test_source_root + "/run_test" + run_test_ext + '"'))

projects/hip/tests/hipify-clang/lit.site.cfg.in

@@ -4,6 +4,7 @@ import os
 config.llvm_tools_dir = "@LLVM_TOOLS_BINARY_DIR@"
 config.obj_root = "@CMAKE_CURRENT_BINARY_DIR@"
 config.cuda_root = "@CUDA_TOOLKIT_ROOT_DIR@"
+config.cuda_dnn_root = "@CUDA_DNN_ROOT_DIR@"
 if sys.platform in ['win32']:
     config.cuda_sdk_root = "@CUDA_SDK_ROOT_DIR@"
     if not config.cuda_sdk_root or config.cuda_sdk_root == "CUDA_SDK_ROOT_DIR-NOTFOUND":