[llvm] [CodeGen] Port `GCInfoPrinter` to new pass manager (PR #74972)

[Aiden Grossman via llvm-commits]

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@@ -43,6 +43,58 @@ class Printer : public FunctionPass {
 
 } // end anonymous namespace
 
+// -----------------------------------------------------------------------------
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boomanaiden154 wrote:

Including comments as breaks between functions within the file isn't part of the LLVM coding style (I'm reasonably sure). Probably best if we keep them out of this patch and wouldn't be a bad idea to remove them from the rest of the file in a seprate patch.

https://github.com/llvm/llvm-project/pull/74972