Undo previous patch. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60701 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/LoopUnswitch.cpp b/lib/Transforms/Scalar/LoopUnswitch.cpp
index 2bf194d..97aa475 100644
--- a/lib/Transforms/Scalar/LoopUnswitch.cpp
+++ b/lib/Transforms/Scalar/LoopUnswitch.cpp
@@ -168,9 +168,7 @@
 
   // TODO: Handle: br (VARIANT|INVARIANT).
   // TODO: Hoist simple expressions out of loops.
-  if (Instruction *I = dyn_cast<Instruction>(Cond))
-    if (!L->contains(I->getParent()))
-      return 0;
+  if (L->isLoopInvariant(Cond)) return Cond;
 
   if (BinaryOperator *BO = dyn_cast<BinaryOperator>(Cond))
     if (BO->getOpcode() == Instruction::And ||