[Pass] Support MachineFunction in getIRName (#70901)

It is necessary in MachinePassManager. `llc` can show function names
when using `debug-pass-manager`.
Part of #69879.
@arsenm

llvm/lib/Passes/StandardInstrumentations.cpp

@@ -19,6 +19,7 @@
 #include "llvm/Analysis/CallGraphSCCPass.h"
 #include "llvm/Analysis/LazyCallGraph.h"
 #include "llvm/Analysis/LoopInfo.h"
+#include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Module.h"
@@ -222,6 +223,9 @@ std::string getIRName(Any IR) {
   if (const auto **L = llvm::any_cast<const Loop *>(&IR))
     return (*L)->getName().str();
 
+  if (const auto **MF = llvm::any_cast<const MachineFunction *>(&IR))
+    return (*MF)->getName().str();
+
   llvm_unreachable("Unknown wrapped IR type");
 }