[llvm] Minimal unwinding information (DWARF CFI) checker (PR #145633)

[Simon Tatham via llvm-commits]

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@@ -0,0 +1,43 @@
+# RUN: llvm-mc %s --validate-cfi --filetype=null
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statham-arm wrote:

It looks as if this test is supposed to run without producing any warnings. Would it be a good idea to run FileCheck anyway, with a `CHECK-NOT: warning:` to make sure a warning doesn't show up by accident?

https://github.com/llvm/llvm-project/pull/145633