No, because the two platforms often don't share the same underlying kernels; this has been one of the main issues and complaints with ROCm/MIOpen since the start, although they are catching up slowly.

This is actually a corollary to the point I was making about "CUDA" usually also including a ton of the included kernels and not just referring to a crappy programming environment; translating mid-level C that does math between two runtimes wouldn't be hard for an LLM, but translating "doBigDNNThingNVidiaGaveMeInAKernel()" to "doBigDNNThingByHandBecauseAMDDoesntSupportIt()" isn't a rote translation at all.

Of course, once you accept that it's _not_ "why don't you just translate it," you _can_ iteratively use an LLM to implement the ThingNVidiaGaveYouInAKernel, but it probably isn't well-trained, yet, on low-level AMD optimization tricks, so the kernel you end up with will likely be slower than the CUDA one.