Actually output file is created by clang itself, but isn't updated and is deleted after processing.
In cooperation with -print-stat -no-output (or single -n) is used for examine the source CUDA code.
Conflicting options:
-inplce
-o
Actually .cu and .cuda was supported.
+ All the file names are allowed, including file names without extension.
[IMPORTANT]
To hipify CUDA input file, which name is not *.cu, please add option "-x cuda" after tool's options ending marker "--", for instance:
./hipify-clang NeuralNet -- -x cuda
This option will go to clang itself, not the hipify tool.