diff --git a/llvm/lib/Transforms/Scalar/LoopFlatten.cpp b/llvm/lib/Transforms/Scalar/LoopFlatten.cpp
--- a/llvm/lib/Transforms/Scalar/LoopFlatten.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopFlatten.cpp
@@ -786,9 +786,8 @@
   }
 
   // Tell LoopInfo, SCEV and the pass manager that the inner loop has been
-  // deleted, and any information that have about the outer loop invalidated.
+  // deleted, and invalidate any outer loop information.
   SE->forgetLoop(FI.OuterLoop);
-  SE->forgetLoop(FI.InnerLoop);
   SE->forgetBlockAndLoopDispositions();
   if (U)
     U->markLoopAsDeleted(*FI.InnerLoop, FI.InnerLoop->getName());
diff --git a/llvm/lib/Transforms/Scalar/LoopInterchange.cpp b/llvm/lib/Transforms/Scalar/LoopInterchange.cpp
--- a/llvm/lib/Transforms/Scalar/LoopInterchange.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopInterchange.cpp
@@ -1240,7 +1240,6 @@
 
   // Tell SE that we move the loops around.
   SE->forgetLoop(NewOuter);
-  SE->forgetLoop(NewInner);
 }
 
 bool LoopInterchangeTransform::transform() {