[llvm] [DebugInfo][RemoveDIs] Use autoupgrader to convert old debug-info (PR #143452)

[Orlando Cazalet-Hyams via llvm-commits]

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@@ -4867,22 +4874,31 @@ void AssemblyWriter::printDbgVariableRecord(const DbgVariableRecord &DVR) {
     llvm_unreachable(
         "Tried to print a DbgVariableRecord with an invalid LocationType!");
   }
+
+  auto PrintOrNull = [&](Metadata *M) {
+    if (!M) {
+      Out << "(null)";
+    } else {
+      WriteAsOperandInternal(Out, M, WriterCtx, true);
+    }
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OCHyams wrote:

style nit: don't need braces on the if. Also clang-format bot looks upset

https://github.com/llvm/llvm-project/pull/143452