Index: llvm/lib/Transforms/Scalar/LoopFlatten.cpp
===================================================================
--- llvm/lib/Transforms/Scalar/LoopFlatten.cpp
+++ llvm/lib/Transforms/Scalar/LoopFlatten.cpp
@@ -682,9 +682,7 @@
   if (!Flatten(DT, LI, SE, AC, TTI))
     return PreservedAnalyses::all();
 
-  PreservedAnalyses PA;
-  PA.preserveSet<CFGAnalyses>();
-  return PA;
+  return PreservedAnalyses::none();
 }
 
 namespace {