[llvm] [CodeGen][NVPTX][WebAssembly] Add copyReg interface to TargetInstrInfo that takes Register instead of MCRegister. (PR #128456)

[Matt Arsenault via llvm-commits]

https://github.com/arsenm commented:

I don't see much point in splitting the interface. They are functionally the same, the detail that some targets happen to use virtual registers throughout isn't significant 

https://github.com/llvm/llvm-project/pull/128456