[llvm] TableGen support for RegisterBankInfo (PR #71357)

[Matt Arsenault via llvm-commits]

================
@@ -289,6 +299,141 @@ void RegisterBankEmitter::emitBaseClassImplementation(
      << "} // end namespace llvm\n";
 }
 
+// TableGen already had some RegisterBankInfo support:
----------------
arsenm wrote:

Don't need the history lesson 

https://github.com/llvm/llvm-project/pull/71357