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

[Jonas Paulsson via llvm-commits]

JonPsson1 wrote:

Hmm, I am kind of stuck at the point of getting a MachineFunction from the given Function. It's common to do MF->getFunction() and get the Function, but there doesn't seem to be a way to do it the other way around. 

There is a MachineFunctionAnalysis that runs, but I am not sure if it creates an MF (and MFI) ahead of time for all Functions in the module, or if it does this  when compilation of it begins. Of course, an MF with an MFI would have to be created ahead of time for this to work.

I guess it might not be so bad to add a Function flag directly and set it at the point of instruction selection, when the Function/Module will not be modified anymore. But that is a bit more intrusive into common-code on the other hand.


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