[llvm] [llvm][DebugInfo] Unwrap template parameters that are typedefs when reconstructing DIE names (PR #168734)

[Michael Buch via llvm-commits]

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@@ -553,10 +570,9 @@ bool DWARFTypePrinter<DieType>::appendTemplateParameters(DieType D,
     }
     if (C.getTag() != dwarf::DW_TAG_template_type_parameter)
       continue;
-    auto TypeAttr = C.find(dwarf::DW_AT_type);
     Sep();
-    appendQualifiedName(TypeAttr ? detail::resolveReferencedType(C, *TypeAttr)
-                                 : DieType());
+
+    appendQualifiedName(detail::unwrapReferencedTypedefType(C));
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Michael137 wrote:

Wasn't entirely sure if this was the right place. We could just unwrap the DIE in `appendUnqualifiedNameBefore` for `DW_TAG_typedef`. But that felt wrong (though that didn't fail any tests, so maybe we usually never get to `appendUnqualifiedNameBefore` for typedef types?). But still felt a bit off

https://github.com/llvm/llvm-project/pull/168734