[llvm] [CodeGen][NPM] Port MachineBlockPlacementStats to NPM (PR #129853)

[Akshat Oke via llvm-commits]

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@@ -30,6 +30,15 @@ class MachineBlockPlacementPass
                 function_ref<StringRef(StringRef)> MapClassName2PassName) const;
 };
 
+class MachineBlockPlacementStatsPass
+    : public PassInfoMixin<MachineBlockPlacementStatsPass> {
+
+public:
+  PreservedAnalyses run(MachineFunction &MF,
+                        MachineFunctionAnalysisManager &MFAM);
+  static bool isRequired() { return true; }
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optimisan wrote:

This keeps it consistent with the legacy pass not skipping optnone functions

https://github.com/llvm/llvm-project/pull/129853