[HIPIFY][CUB] Initial support (hipify-clang only)

+ Add one matcher (will be more)
+ Update Maps and Statistics
+ Add cub_01.cu unit test
+ Update lit harness to support standalone CUB
+ Update README.md
+ Update hipify-perl (only CUB header is supported for now)

[IMPORTANT]
clang (and hipify-clang) works correctly only with official NVLabs version on GitHub.
Compilation of CUB from official CUDA release has conflicts with THRUST.
Thus, to compile CUB sources, option "-I" should be specified to the cloned CUB from NVLAB on GitHub.


[ROCm/hip commit: 277d3b8369]

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

@@ -84,17 +84,23 @@ clang_arguments = "-v"
 if sys.platform in ['win32']:
     run_test_ext = ".bat"
     hipify_path += "/" + config.build_type
+    # CUDA SDK ROOT
     clang_arguments += " -isystem'%s'/common/inc"
 else:
     run_test_ext = ".sh"
+    # CUDA SDK ROOT
     clang_arguments += " -isystem'%s'/samples/common/inc"
+# cuDNN ROOT
 clang_arguments += " -I'%s'/include"
 if config.pointer_size == 8:
     clang_arguments += " -D__LP64__"
 
+# CUB ROOT
+clang_arguments += " -I'%s'"
+
 hipify_arguments = "--cuda-path='%s'"
 
-config.substitutions.append(("%clang_args", clang_arguments % (config.cuda_sdk_root, config.cuda_dnn_root)))
+config.substitutions.append(("%clang_args", clang_arguments % (config.cuda_sdk_root, config.cuda_dnn_root, config.cuda_cub_root)))
 config.substitutions.append(("%hipify_args", hipify_arguments % (config.cuda_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

@@ -8,6 +8,7 @@ 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@"
+config.cuda_cub_root = "@CUDA_CUB_ROOT_DIR@"
 config.cuda_version_major = int("@CUDA_VERSION_MAJOR@")
 config.cuda_version_minor = int("@CUDA_VERSION_MINOR@")
 config.cuda_version = "@CUDA_VERSION@"