[llvm] [SystemZ] Use hasAddressTaken() with verifyNarrowIntegerArgs (NFC). (PR #131039)

[Jonas Paulsson via llvm-commits]

JonPsson1 wrote:

> Instead of adding the new map, can't this bit of information be cached in SystemZMachineFunctionInfo?

I think SystemZTargetLowering is created once per module, while SystemZMachineFunctionInfo is created for each Function.

https://github.com/llvm/llvm-project/pull/131039