1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopInstSimplify.cpp b/llvm/lib/Transforms/Scalar/LoopInstSimplify.cpp
index 368b9d4e8df1..901204181a7c 100644
--- a/llvm/lib/Transforms/Scalar/LoopInstSimplify.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopInstSimplify.cpp
@@ -33,6 +33,7 @@
 #include "llvm/IR/Module.h"
 #include "llvm/IR/PassManager.h"
 #include "llvm/IR/User.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Transforms/Scalar.h"
@@ -226,7 +227,8 @@ PreservedAnalyses LoopInstSimplifyPass::run(Loop &L, LoopAnalysisManager &AM,
   Optional<MemorySSAUpdater> MSSAU;
   if (AR.MSSA) {
     MSSAU = MemorySSAUpdater(AR.MSSA);
-    AR.MSSA->verifyMemorySSA();
+    if (VerifyMemorySSA)
+      AR.MSSA->verifyMemorySSA();
   }
   if (!simplifyLoopInst(L, AR.DT, AR.LI, AR.AC, AR.TLI,
                         MSSAU.hasValue() ? MSSAU.getPointer() : nullptr))