[llvm] [AMDGPU][NewPM] Port SIOptimizeVGPRLiveRange pass to NPM. (PR #117686)

[Matt Arsenault via llvm-commits]

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@@ -611,35 +620,59 @@ void SIOptimizeVGPRLiveRange::optimizeWaterfallLiveRange(
   }
 }
 
-char SIOptimizeVGPRLiveRange::ID = 0;
+char SIOptimizeVGPRLiveRangeLegacy::ID = 0;
 
-INITIALIZE_PASS_BEGIN(SIOptimizeVGPRLiveRange, DEBUG_TYPE,
+INITIALIZE_PASS_BEGIN(SIOptimizeVGPRLiveRangeLegacy, DEBUG_TYPE,
                       "SI Optimize VGPR LiveRange", false, false)
 INITIALIZE_PASS_DEPENDENCY(MachineDominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(MachineLoopInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(LiveVariablesWrapperPass)
-INITIALIZE_PASS_END(SIOptimizeVGPRLiveRange, DEBUG_TYPE,
+INITIALIZE_PASS_END(SIOptimizeVGPRLiveRangeLegacy, DEBUG_TYPE,
                     "SI Optimize VGPR LiveRange", false, false)
 
-char &llvm::SIOptimizeVGPRLiveRangeID = SIOptimizeVGPRLiveRange::ID;
+char &llvm::SIOptimizeVGPRLiveRangeLegacyID = SIOptimizeVGPRLiveRangeLegacy::ID;
+
+FunctionPass *llvm::createSIOptimizeVGPRLiveRangeLegacyPass() {
+  return new SIOptimizeVGPRLiveRangeLegacy();
+}
+
+bool SIOptimizeVGPRLiveRangeLegacy::runOnMachineFunction(MachineFunction &MF) {
+  if (skipFunction(MF.getFunction()))
+    return false;
 
-FunctionPass *llvm::createSIOptimizeVGPRLiveRangePass() {
-  return new SIOptimizeVGPRLiveRange();
+  LiveVariables *LV = &getAnalysis<LiveVariablesWrapperPass>().getLV();
+  MachineDominatorTree *MDT =
+      &getAnalysis<MachineDominatorTreeWrapperPass>().getDomTree();
+  MachineLoopInfo *Loops = &getAnalysis<MachineLoopInfoWrapperPass>().getLI();
+  return SIOptimizeVGPRLiveRange(LV, MDT, Loops).run(MF);
 }
 
-bool SIOptimizeVGPRLiveRange::runOnMachineFunction(MachineFunction &MF) {
+PreservedAnalyses
+SIOptimizeVGPRLiveRangePass::run(MachineFunction &MF,
+                                 MachineFunctionAnalysisManager &MFAM) {
+  MFPropsModifier _(*this, MF);
+  LiveVariables *LV = &MFAM.getResult<LiveVariablesAnalysis>(MF);
+  MachineDominatorTree *MDT = &MFAM.getResult<MachineDominatorTreeAnalysis>(MF);
+  MachineLoopInfo *Loops = &MFAM.getResult<MachineLoopAnalysis>(MF);
+
+  bool Changed = SIOptimizeVGPRLiveRange(LV, MDT, Loops).run(MF);
+  if (!Changed)
+    return PreservedAnalyses::all();
+
+  auto PA = getMachineFunctionPassPreservedAnalyses();
+  PA.preserve<LiveVariablesAnalysis>();
+  PA.preserve<DominatorTreeAnalysis>();
+  PA.preserve<MachineLoopAnalysis>();
+  PA.preserveSet<CFGAnalyses>();
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arsenm wrote:

Should fix old pm in follow up 

https://github.com/llvm/llvm-project/pull/117686