[llvm-branch-commits] [llvm] [CodeGen][NewPM] Port PeepholeOptimizer to NPM (PR #116326)

[via llvm-branch-commits]

================
@@ -1644,9 +1652,36 @@ bool PeepholeOptimizer::optimizeRecurrence(MachineInstr 
&PHI) {
   return Changed;
 }
 
-bool PeepholeOptimizer::runOnMachineFunction(MachineFunction &MF) {
+PreservedAnalyses
+PeepholeOptimizerPass::run(MachineFunction &MF,
+                           MachineFunctionAnalysisManager &MFAM) {
+  MFPropsModifier _(*this, MF);
+  auto *DT =
+      Aggressive ? &MFAM.getResult<MachineDominatorTreeAnalysis>(MF) : nullptr;
+  auto *MLI = &MFAM.getResult<MachineLoopAnalysis>(MF);
+  PeepholeOptimizer Impl(DT, MLI);
+  bool Changed = Impl.run(MF);
+  if (!Changed)
+    return PreservedAnalyses::all();
+
+  auto PA = getMachineFunctionPassPreservedAnalyses();
+  PA.preserve<MachineDominatorTreeAnalysis>();
+  PA.preserve<MachineLoopAnalysis>();
----------------
paperchalice wrote:

Add `PA.preserveSet<CFGAnalyses>();`.

https://github.com/llvm/llvm-project/pull/116326
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