Index: llvm/lib/IR/LegacyPassManager.cpp
===================================================================
--- llvm/lib/IR/LegacyPassManager.cpp
+++ llvm/lib/IR/LegacyPassManager.cpp
@@ -1503,7 +1503,8 @@
     dumpUsedSet(FP);
 
     verifyPreservedAnalysis(FP);
-    removeNotPreservedAnalysis(FP);
+    if (LocalChanged)
+      removeNotPreservedAnalysis(FP);
     recordAvailableAnalysis(FP);
     removeDeadPasses(FP, F.getName(), ON_FUNCTION_MSG);
   }
@@ -1602,7 +1603,8 @@
     dumpUsedSet(MP);
 
     verifyPreservedAnalysis(MP);
-    removeNotPreservedAnalysis(MP);
+    if (LocalChanged)
+      removeNotPreservedAnalysis(MP);
     recordAvailableAnalysis(MP);
     removeDeadPasses(MP, M.getModuleIdentifier(), ON_MODULE_MSG);
   }