[Debugify/Strip] Fix returned PreservedAnalyses

llvm/lib/Transforms/IPO/StripSymbols.cpp

@@ -265,23 +265,31 @@ static bool stripDeadDebugInfoImpl(Module &M) {
 PreservedAnalyses StripSymbolsPass::run(Module &M, ModuleAnalysisManager &AM) {
   StripDebugInfo(M);
   StripSymbolNames(M, false);
-  return PreservedAnalyses::all();
+  PreservedAnalyses PA;
+  PA.preserveSet<CFGAnalyses>();
+  return PA;
 }
 
 PreservedAnalyses StripNonDebugSymbolsPass::run(Module &M,
                                                 ModuleAnalysisManager &AM) {
   StripSymbolNames(M, true);
-  return PreservedAnalyses::all();
+  PreservedAnalyses PA;
+  PA.preserveSet<CFGAnalyses>();
+  return PA;
 }
 
 PreservedAnalyses StripDebugDeclarePass::run(Module &M,
                                              ModuleAnalysisManager &AM) {
   stripDebugDeclareImpl(M);
-  return PreservedAnalyses::all();
+  PreservedAnalyses PA;
+  PA.preserveSet<CFGAnalyses>();
+  return PA;
 }
 
 PreservedAnalyses StripDeadDebugInfoPass::run(Module &M,
                                               ModuleAnalysisManager &AM) {
   stripDeadDebugInfoImpl(M);
-  return PreservedAnalyses::all();
+  PreservedAnalyses PA;
+  PA.preserveSet<CFGAnalyses>();
+  return PA;
 }

llvm/lib/Transforms/Utils/Debugify.cpp

@@ -979,7 +979,9 @@ PreservedAnalyses NewPMDebugifyPass::run(Module &M, ModuleAnalysisManager &) {
     collectDebugInfoMetadata(M, M.functions(), *DebugInfoBeforePass,
                              "ModuleDebugify (original debuginfo)",
                               NameOfWrappedPass);
-  return PreservedAnalyses::all();
+  PreservedAnalyses PA;
+  PA.preserveSet<CFGAnalyses>();
+  return PA;
 }
 
 ModulePass *createCheckDebugifyModulePass(

llvm/lib/Transforms/Utils/StripNonLineTableDebugInfo.cpp

@@ -17,5 +17,7 @@ using namespace llvm;
 PreservedAnalyses
 StripNonLineTableDebugInfoPass::run(Module &M, ModuleAnalysisManager &AM) {
   llvm::stripNonLineTableDebugInfo(M);
-  return PreservedAnalyses::all();
+  PreservedAnalyses PA;
+  PA.preserveSet<CFGAnalyses>();
+  return PA;
 }