[llvm-branch-commits] [llvm] [CodeGen][NewPM] Port RegAllocGreedy to NPM (PR #119540)

[Matt Arsenault via llvm-branch-commits]

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@@ -146,11 +149,138 @@ static cl::opt<unsigned> SplitThresholdForRegWithHint(
 static RegisterRegAlloc greedyRegAlloc("greedy", "greedy register allocator",
                                        createGreedyRegisterAllocator);
 
-char RAGreedy::ID = 0;
-char &llvm::RAGreedyID = RAGreedy::ID;
+namespace {
+class RAGreedyLegacy : public MachineFunctionPass {
+  RegAllocFilterFunc F;
 
-INITIALIZE_PASS_BEGIN(RAGreedy, "greedy",
-                "Greedy Register Allocator", false, false)
+public:
+  RAGreedyLegacy(const RegAllocFilterFunc F = nullptr);
+
+  static char ID;
+  /// Return the pass name.
+  StringRef getPassName() const override { return "Greedy Register Allocator"; }
+
+  /// RAGreedy analysis usage.
+  void getAnalysisUsage(AnalysisUsage &AU) const override;
+  /// Perform register allocation.
+  bool runOnMachineFunction(MachineFunction &mf) override;
+
+  MachineFunctionProperties getRequiredProperties() const override {
+    return MachineFunctionProperties().set(
+        MachineFunctionProperties::Property::NoPHIs);
+  }
+
+  MachineFunctionProperties getClearedProperties() const override {
+    return MachineFunctionProperties().set(
+        MachineFunctionProperties::Property::IsSSA);
+  }
+};
+
+} // end anonymous namespace
+
+RAGreedyLegacy::RAGreedyLegacy(const RegAllocFilterFunc F)
+    : MachineFunctionPass(ID), F(F) {
+  initializeRAGreedyLegacyPass(*PassRegistry::getPassRegistry());
+}
+
+RAGreedy::RAGreedy(RequiredAnalyses &Analyses, const RegAllocFilterFunc F) : RegAllocBase(F) {
+  setAnalyses(Analyses);
+}
+
+void RAGreedy::setAnalyses(RequiredAnalyses &Analyses) {
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arsenm wrote:

Just do this directly in the constructor, there's no other user of setAnalyses 

https://github.com/llvm/llvm-project/pull/119540