[llvm] CodeGen: Eliminate dynamic relocations in the register superclass tables. (PR #119122)

[Owen Anderson via llvm-commits]

resistor wrote:

> Also, could the same change done here for superclass tables be done for subreg tables? That's the other one that seems to show up as a lot of separate tables, although not as much as superclasses.

I'll take a look at the others once this one is in. I expect some of them to be straight forward, but the ID -> TargetRegisterClass table will be tricky.

https://github.com/llvm/llvm-project/pull/119122