[llvm-branch-commits] [llvm] [CodeGen][NewPM] Port SpillPlacement analysis to NPM (PR #116618)

[via llvm-branch-commits]

================
@@ -38,13 +39,21 @@ class BitVector;
 class EdgeBundles;
 class MachineBlockFrequencyInfo;
 class MachineFunction;
+class SpillPlacementWrapperLegacy;
+class SpillPlacementAnalysis;
+
+class SpillPlacement {
+  friend class SpillPlacementWrapperLegacy;
+  friend class SpillPlacementAnalysis;
 
-class SpillPlacement : public MachineFunctionPass {
   struct Node;
+
   const MachineFunction *MF = nullptr;
   const EdgeBundles *bundles = nullptr;
   const MachineBlockFrequencyInfo *MBFI = nullptr;
-  Node *nodes = nullptr;
+
+  static void arrayDeleter(Node *N);
+  std::unique_ptr<Node, decltype(&arrayDeleter)> nodes;
----------------
paperchalice wrote:

Array form would be better:
```suggestion
  std::unique_ptr<Node[]> nodes;
```
https://en.cppreference.com/w/cpp/memory/unique_ptr

https://github.com/llvm/llvm-project/pull/116618