[HIPIFY] Introduce CUDA installation path option '-cuda-path'

Repeats clang's '--cuda-path' option.

[Reason]
In case of absence of any other clang's options setting '-cuda-path' allows not to specify separator '--' before clang's '--cuda-path'.

+ Tests and scripts are updated accordingly.

hipify-clang/src/ArgParse.cpp

@@ -39,6 +39,11 @@ cl::opt<std::string> TemporaryDir("temp-dir",
   cl::value_desc("directory"),
   cl::cat(ToolTemplateCategory));
 
+cl::opt<std::string> CudaPath("cuda-path",
+  cl::desc("CUDA installation path"),
+  cl::value_desc("directory"),
+  cl::cat(ToolTemplateCategory));
+
 cl::opt <bool> SaveTemps("save-temps",
   cl::desc("Save temporary files"),
   cl::value_desc("save-temps"),

hipify-clang/src/ArgParse.h

@@ -32,6 +32,7 @@ extern cl::OptionCategory ToolTemplateCategory;
 extern cl::opt<std::string> OutputFilename;
 extern cl::opt<std::string> OutputDir;
 extern cl::opt<std::string> TemporaryDir;
+extern cl::opt<std::string> CudaPath;
 extern cl::opt<bool> Inplace;
 extern cl::opt<bool> SaveTemps;
 extern cl::opt<bool> NoBackup;

hipify-clang/src/main.cpp

@@ -174,6 +174,10 @@ int main(int argc, const char **argv) {
     Tool.appendArgumentsAdjuster(ct::getInsertArgumentAdjuster("cuda", ct::ArgumentInsertPosition::BEGIN));
     Tool.appendArgumentsAdjuster(ct::getInsertArgumentAdjuster("-x", ct::ArgumentInsertPosition::BEGIN));
     Tool.appendArgumentsAdjuster(ct::getInsertArgumentAdjuster("--cuda-host-only", ct::ArgumentInsertPosition::BEGIN));
+    if (!CudaPath.empty()) {
+      std::string sCudaPath = "--cuda-path=" + CudaPath;
+      Tool.appendArgumentsAdjuster(ct::getInsertArgumentAdjuster(sCudaPath.c_str(), ct::ArgumentInsertPosition::BEGIN));
+    }
     // Includes for clang's CUDA wrappers for using by packaged hipify-clang
     Tool.appendArgumentsAdjuster(ct::getInsertArgumentAdjuster("./include", ct::ArgumentInsertPosition::BEGIN));
     Tool.appendArgumentsAdjuster(ct::getInsertArgumentAdjuster("-isystem", ct::ArgumentInsertPosition::BEGIN));