[llvm] [CodeGen] Support MachineFunctionProperties in PassConcept (PR #79749)

[Arthur Eubanks via llvm-commits]

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@@ -170,6 +192,17 @@ class MachineFunctionPassManager
     addRunOnModule<PassT>(P);
   }
 
+  // Avoid diamond problem.
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aeubanks wrote:

can you clarify that we'd be getting `PassInfoMixin` twice if we directly inherited from it (`PassManager` also inheriting from it)

https://github.com/llvm/llvm-project/pull/79749