1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp b/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp
index 1b590140f70..ec62881e0b5 100644
--- a/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp
+++ b/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp
@@ -1393,7 +1393,9 @@ PreservedAnalyses MemCpyOptPass::run(Function &F, FunctionAnalysisManager &AM) {
                             LookupAssumptionCache, LookupDomTree);
   if (!MadeChange)
     return PreservedAnalyses::all();
+
   PreservedAnalyses PA;
+  PA.preserveSet<CFGAnalyses>();
   PA.preserve<GlobalsAA>();
   PA.preserve<MemoryDependenceAnalysis>();
   return PA;