diff --git a/lib/Transforms/Scalar/LoopUnswitch.cpp b/lib/Transforms/Scalar/LoopUnswitch.cpp
index 80d4311ebcb..64ff68b6f73 100644
--- a/lib/Transforms/Scalar/LoopUnswitch.cpp
+++ b/lib/Transforms/Scalar/LoopUnswitch.cpp
@@ -486,7 +486,7 @@ static void EmitPreheaderBranchOnCondition(Value *LIC, Constant *Val,
   // Insert a conditional branch on LIC to the two preheaders.  The original
   // code is the true version and the new code is the false version.
   Value *BranchVal = LIC;
-  if (Val->getType() != Type::Int1Ty)
+  if (Val->getType() != Type::Int1Ty || !isa<ConstantInt>(Val))
     BranchVal = new ICmpInst(ICmpInst::ICMP_EQ, LIC, Val, "tmp", InsertPt);
   else if (Val != ConstantInt::getTrue())
     // We want to enter the new loop when the condition is true.