[llvm] [llvm] Support building with c++23 (PR #154372)

[Kyle Krüger via llvm-commits]

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@@ -36,7 +36,7 @@ class MachineFunctionAnalysis
     std::unique_ptr<MachineFunction> MF;
 
   public:
-    Result(std::unique_ptr<MachineFunction> MF) : MF(std::move(MF)) {}
+    Result(std::unique_ptr<MachineFunction> MF);
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kykrueger wrote:

>From what I've found in other issues, it seems that clang isn't wrong to be instantiating the unique_ptrs as early as it is. I'll see what else I can find on the topic.

https://github.com/llvm/llvm-project/pull/154372