[llvm] [PassManager] Support MachineFunctionProperties (PR #83668)

[via llvm-commits]

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@@ -64,6 +64,8 @@ extern llvm::cl::opt<bool> UseNewDbgInfoFormat;
 
 namespace llvm {
 
+class MachineFunction;
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paperchalice wrote:

If possible, I would prefer verify machine function properties in instrumentation (e.g. by adding RequiredProperties in MachineFunction), modify properties in pass, e.g. by a Scope-Bound Resource Management object, but still need to insert boilerplate code 😕.

https://github.com/llvm/llvm-project/pull/83668