Change RunEarly to be a boolean flag in ExternalAAWrapper

Author: Chengjunp

llvm/include/llvm/Analysis/AliasAnalysis.h

@@ -1023,7 +1023,7 @@ struct ExternalAAWrapperPass : ImmutablePass {
   /// particularly useful when the external AA can provide more precise results
   /// than Basic AA so that Basic AA does not need to spend time recomputing
   /// them.
-  virtual bool runEarly() { return false; }
+  bool RunEarly = false;
 
   void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.setPreservesAll();

llvm/lib/Analysis/AliasAnalysis.cpp

@@ -741,7 +741,7 @@ bool AAResultsWrapperPass::runOnFunction(Function &F) {
 
   // Add any target-specific alias analyses that should be run early.
   auto *ExtWrapperPass = getAnalysisIfAvailable<ExternalAAWrapperPass>();
-  if (ExtWrapperPass && ExtWrapperPass->runEarly() && ExtWrapperPass->CB) {
+  if (ExtWrapperPass && ExtWrapperPass->RunEarly && ExtWrapperPass->CB) {
     LLVM_DEBUG(dbgs() << "AAResults register Early ExternalAA: "
                       << ExtWrapperPass->getPassName() << "\n");
     ExtWrapperPass->CB(*this, F, *AAR);
@@ -777,7 +777,7 @@ bool AAResultsWrapperPass::runOnFunction(Function &F) {
 
   // If available, run an external AA providing callback over the results as
   // well.
-  if (ExtWrapperPass && !ExtWrapperPass->runEarly() && ExtWrapperPass->CB) {
+  if (ExtWrapperPass && !ExtWrapperPass->RunEarly && ExtWrapperPass->CB) {
     LLVM_DEBUG(dbgs() << "AAResults register Late ExternalAA: "
                       << ExtWrapperPass->getPassName() << "\n");
     ExtWrapperPass->CB(*this, F, *AAR);

llvm/lib/Target/NVPTX/NVPTXAliasAnalysis.h

@@ -90,14 +90,14 @@ class NVPTXExternalAAWrapper : public ExternalAAWrapperPass {
 public:
   static char ID;
 
-  bool runEarly() override { return true; }
-
   NVPTXExternalAAWrapper()
       : ExternalAAWrapperPass([](Pass &P, Function &, AAResults &AAR) {
           if (auto *WrapperPass =
                   P.getAnalysisIfAvailable<NVPTXAAWrapperPass>())
             AAR.addAAResult(WrapperPass->getResult());
-        }) {}
+        }) {
+    RunEarly = true;
+  }
 
   StringRef getPassName() const override {
     return "NVPTX Address space based Alias Analysis Wrapper";