[llvm] [CodeGen][NewPM] Port `AsmPrinter` to new pass manager (PR #99320)

[Alexis Engelke via llvm-commits]

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@@ -517,6 +525,16 @@ class Target {
 
   /// createAsmPrinter - Create a target specific assembly printer pass.  This
   /// takes ownership of the MCStreamer object.
+  AsmPrinterLegacy *
+  createAsmPrinterLegacy(TargetMachine &TM,
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aengelke wrote:

What's the point of having the legacy pass overridable by targets? This doesn't seem to be useful (or used), because the legacy pass just wraps the AsmPrinter, which provides virtual functions for everything.

https://github.com/llvm/llvm-project/pull/99320