[llvm] [LLVM] Create `lf_alias` nodes for `typedef` and `using` (PR #153936)

[Michael Buch via llvm-commits]

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@@ -0,0 +1,14 @@
+// Build with clang -fno-rtti -g -O0 typedef.cpp
+// Built with clang (22+) because MSVC does not output lf_alias for typedefs
+
+void *__purecall = 0;
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Michael137 wrote:

Why not compile this file as part of the test? After all, this is testing that Clang correctly emits `LF_ALIAS` right?

https://github.com/llvm/llvm-project/pull/153936