[clang] [llvm] [mlir] [LLVM][TableGen] Change all `Init` pointers to const (PR #112705)

[Craig Topper via cfe-commits]

topperc wrote:

> Also, this enabled removing one const_cast<> in #112261 (which I think is going to be the final change for the time being to make more pointers const in TableGen backends).

That one seems related to Record pointers being const. Can that be fixed independent of Init pointers being const?

https://github.com/llvm/llvm-project/pull/112705