Enable jit fusion on ROCm (#22872)
Summary:
As of ROCm 2.6, we support hiprtc - the HIP runtime compilation API. Enable the jit fusion feature depending on the existence of such an API. This entails
* new hipification rules for API_RTC
* add hiprtc APIs to the shim loader
* update cmake infrastructure to find the hiprtc library (it is part of the HIP package)
* enabling of unit tests in the jit_fuser test set
* special casing in resource strings for HIP - the typedefs CUDA requires would be redundant
* for now disable the occupancy calculation we do not support yet and hard-code
Thanks to t-vi for working with me on getting this integration done!
Pull Request resolved: https://github.com/pytorch/pytorch/pull/22872
Differential Revision: D17207425
Pulled By: bddppq
fbshipit-source-id: 93409f3051ad0ea06afacc2239fd6c402152debe
